Abrégé

Disclosed is an absorption terahertz direct modulator with zero reflection. The absorption terahertz direct modulator with zero reflection includes a rectangular waveguide and a modulation module, two ends of the rectangular waveguide are waveguide ports, the modulation module penetrates through cavity wall of the rectangular waveguide and is placed on a wide side of the rectangular waveguide in a way that its face is perpendicular to a face of the waveguide port, the modulation module includes filter units and a modulation unit disposed between the filter units, a cross-shaped slot line transmission structure and a semiconductor regulation device disposed on the cross-shaped slot line transmission structure are disposed on a front side of the modulation unit, a dual split ring is disposed on back of the modulation unit, and the dual split ring corresponds to the cross-shaped slot line in position.

Classes IPC  ?

• H01P 1/201 - Filtres à ondes électromagnétiques transversales

Abrégé

The present application relates to a metal oxide semiconductor field effect transistor and a manufacturing method therefor. The metal oxide semiconductor field effect transistor comprises: a source region (142) having a first conductivity type; a drift region (130) having the first conductivity type; a first well region (120) having the first conductivity type, and located below the drift region (130) and connected to the drift region (130); a drain trench structure extending downward from the drift region (130) into the first well region (120), the drain trench structure comprising an insulating dielectric layer (145) located on a sidewall of a first trench, and a conductive material (146) located in the first trench and laterally surrounded by the insulating dielectric layer (145), and at least a portion of the drift region (130) being located between the source region (142) and the drain trench structure; and a gate (152) located on the drift region (130).

Classes IPC  ?

• H10D 30/65 - Transistors FET DMOS latéraux [LDMOS]

Abrégé

A high-speed matrix computation circuit, relating to electronic technology. The present invention comprises M+N-1 addition modules and a predetermined number of macro computation modules. Each macro computation module comprises M row lines and N column lines which are equivalently and orthogonally arranged. Multipliers are arranged at intersections of the row lines and the column lines to form a multiplier array composed of M x N multipliers. A first input terminal of each multiplier is connected to the row line in which the multiplier is located, and a second input terminal thereof is connected to the column line in which the multiplier is located. M and N are predetermined natural numbers. U[M-x][N-y] is used to represent a multiplier at each position, and x and y are both integers and satisfy the following conditions: 0≤x≤M-1, and 0≤y≤N-1. Among the macro computation modules, an output terminal of a multiplier satisfying x+y=S is connected to an input terminal of an addition module having a serial number S. On the basis of serial numbers, output terminals of the addition modules are connected to different bit weight input terminals of a bit weight addition circuit in a one-to-one correspondence. The present invention greatly reduces the amount of digital computation.

Classes IPC  ?

• G06F 17/16 - Calcul de matrice ou de vecteur

Abrégé

The present invention provides a method for colorimetric temperature measurement in ultra-high temperature environment based on multisource error self-correction, which firstly establishes a colorimetric temperature measurement formula, then determines a low-error characteristic curve based on green channel features of N pluralities of calibration images, thus creating a probability model that combines prior knowledge of calibration data with actual observation data in actual measurement, and lastly, performs a iterative optimization based on an established objective function to obtain a corrected temperature, thus the multisource errors are uniformly corrected and the accuracy of colorimetric temperature measurement in ultra-high temperature environment is significantly improved.

Classes IPC  ?

• G01K 11/12 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant le changement de couleur, de translucidité ou de réflectance
• G01K 15/00 - Test ou étalonnage des thermomètres

Abrégé

A method for synchronizing and controlling backscatter communication based on an ambient cellular OFDM signal includes the following steps: S10, transmitting, by a transmitting terminal, an ambient cellular OFDM signal, which carries synchronization and control information; and S20, acquiring, by a backscatter tag, the synchronization and control information from the ambient cellular OFDM signal, including: utilizing, by the backscatter tag, an envelope-detection circuit to convert the ambient cellular OFDM signal into a digital pulse signal; establishing, by the backscatter tag, synchronization with the transmitting terminal by detecting a rising edge of the digital pulse signal; and identifying, by the backscatter tag, the control information of the transmitting terminal by detecting multi-segment pulse widths of the digital pulse signal.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04W 56/00 - Dispositions de synchronisation

Abrégé

The present disclosure discloses a fast approximate analysis method for mutual coupling-containing pattern of a large-scale ultra-wideband heterogeneous array, comprises: dividing the entire large-scale ultra-wideband heterogeneous array into a plurality of sub-arrays according to a type of element used by a heterogeneous array, ensuring that each sub-array contains elements of the same type; classifying the elements in the sub-arrays; selecting representative elements for representing environmentally similar elements, removing rows and columns that do not have the representative elements, and retaining all key features of the heterogeneous array; performing full-wave simulation on a constructed compact representative array, extracting AEPs of all the representative elements, and storing same; and replacing AEPs of the environmentally similar elements with the AEPs of the representative elements, performing approximate computing to obtain patterns of all the sub-arrays, and superimposing the obtained results to obtain a mutual-coupling-containing pattern of the heterogeneous array.

Classes IPC  ?

• G06F 18/241 - Techniques de classification relatives au modèle de classification, p. ex. approches paramétriques ou non paramétriques
• G06F 17/11 - Opérations mathématiques complexes pour la résolution d'équations
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• H01Q 21/24 - Combinaisons d'unités d'antennes polarisées dans des directions différentes pour émettre ou recevoir des ondes polarisées circulairement ou elliptiquement ou des ondes polarisées linéairement dans n'importe quelle direction

Abrégé

The present application relates to a semiconductor device, comprising: a source region (134); a drain region (132), wherein the drain region (132) is of the same conductivity type as the source region (134); a field oxide layer (150), which is located between the source region (134) and the drain region (132); a gate (138), which is located between the source region (134) and the drain region (132) and extends from an edge of the source region (134) onto the field oxide layer (150); and a resistive field plate (140), which is located on the field oxide layer (150), wherein a plurality of series-connected diodes obtained by means of N-type doping and/or P-type doping are formed on the resistive field plate (140), the conduction directions of some of the series-connected diodes are opposite to those of the others, and the resistive field plate (140) is electrically connected to both the drain region (132) and the gate (138).

Classes IPC  ?

• H10D 30/65 - Transistors FET DMOS latéraux [LDMOS]

Abrégé

The present invention provides a multi-target position and velocity joint estimation method based on terahertz near-field MIMO-OFDM, comprising: a terahertz near-field MIMO-OFDM model establishment step: establishing a near-field MIMO-OFDM signal model, and representing a received signal in the near-field MIMO-OFDM signal model as a third-order tensor; a tensor decomposition step: decomposing the received signal sensor, and on the basis of the uniqueness of the tensor decomposition, performing estimation by using a factor matrix obtained after the tensor decomposition to obtain estimated values of intermediate parameters; a parameter preliminary estimation step: using the estimated values of the intermediate parameters and a least squares (LS) algorithm for preliminary calculation so as to obtain iteration starting points, and establishing an optimization equation; and a precise positioning and velocity estimation step: performing Taylor expansion and second-order Taylor approximation on nonlinear terms of the optimization equation at the starting points, converting the optimization equation into a convex optimization equation, and using a cvx toolbox to iteratively solve the convex optimization equation to obtain estimated values of the position and the velocity of a target. The present invention improves the accuracy of target parameter estimation by jointly processing an inter-antenna phase difference and an inter-subcarrier phase difference by means of tensor decomposition.

Classes IPC  ?

• G01S 13/89 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation
• H04B 7/0413 - Systèmes MIMO

Abrégé

The present application relates to a lateral device, comprising: a source region (134) having a first conductivity type; a drain region (132) having the first conductivity type; a drift region (110) having the first conductivity type and at least partially located between the source region (134) and the drain region (132); a buried region (112) of a second conductivity type located in the drift region (110) between the source region (134) and the drain region (132); a field oxide layer (150) located on the drift region (110); a top-doped region (120) located in the drift region (110) that is above the buried region (112) of the second conductivity type and below the field oxide layer (150), the top-doped region comprising at least one doped layer of the first conductivity type, and the doped layer of the first conductivity type having a doping concentration greater than that of the drift region (110); and field plates (140) located on the field oxide layer (150).

Classes IPC  ?

• H10D 30/65 - Transistors FET DMOS latéraux [LDMOS]

Abrégé

An exposure device or tool and a method for preparing circuits on curved surfaces, belonging to the technical field of exposure devices and tools, are disclosed. By expanding the designed pattern on the curved surface into multiple, continuous pattern blocks, the original curved pattern is converted into a flat pattern. Based on the flat pattern, a corresponding mask is designed, with the pattern areas retained. Subsequently, using the exposure device or tool, a photoresist on the curved surface is selectively exposed to light, thereby transferring the pattern from the mask to the curved surface. In this exposure process, rotation of the sample stage and horizontal movement of the mask, combined with the light from a light source, allow for the transfer of the pattern from the mask onto the curved sample or workpiece.

Classes IPC  ?

• G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
• G03F 7/16 - Procédés de couchageAppareillages à cet effet
• G03F 7/18 - Couchage des surfaces incurvées

Abrégé

A method and system for positioning a trajectory of an ultrasonic logging tool includes steps: S1: inputting waveforms and extracting arrival times; S2: establishing a coordinate system and initializing a tool trajectory; S3: calculating an initial wave velocity in fluid using a least squares method, and calculating a distance between the tool and a casing and coordinates of casing's inner surface based on the initial wave velocity in fluid and time; S4: searching for an optimal tool trajectory based on the distance and the inner boundary coordinates, and updating a wave velocity in fluid based on a perimeter of the inner boundary; S5: repeating steps S3 and S4 until the update amount of the tool trajectory between two iterations is less than a threshold; S6: outputting a final tool trajectory, wave velocity in fluid and casing's inner surface.

Classes IPC  ?

• G01V 1/50 - Analyse des données
• E21B 47/024 - Détermination de l'inclinaison ou de la direction des dispositifs dans le trou de forage

Abrégé

A zero-delay panoramic video bit rate control method that considers distortion temporal propagation aims to optimize target bit allocation and achieve global rate-distortion optimization in coding. It encompasses coding tree unit (CTU)-level bit rate control and temporal global rate-distortion optimization. CTU-level bit rate control involves optimizing target bit allocation and updating bit rate control parameters. Temporal global rate-distortion optimization utilizes the reconstruction error and motion compensation prediction error information of the previous coded frame to estimate the temporal dependence between CTUs in the current coding frame and those in the previous coded frame to adjust the coding parameters of the current CTU. The coding parameters are further fine-tuned according to the area stretching ratio encountered during the projection of the panoramic video from a 3D spherical surface to a 2D plane, taking into consideration the detrimental impact of interpolated redundant pixels on the coding process.

Classes IPC  ?

• H04N 19/96 - Codage au moyen d'une arborescence, p. ex. codage au moyen d'une arborescence quadratique
• G06V 10/75 - Organisation de procédés de l’appariement, p. ex. comparaisons simultanées ou séquentielles des caractéristiques d’images ou de vidéosApproches-approximative-fine, p. ex. approches multi-échellesAppariement de motifs d’image ou de vidéoMesures de proximité dans les espaces de caractéristiques utilisant l’analyse de contexteSélection des dictionnaires
• H04N 19/124 - Quantification
• H04N 19/159 - Type de prédiction, p. ex. prédiction intra-trame, inter-trame ou de trame bidirectionnelle
• H04N 19/172 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant une image, une trame ou un champ
• H04N 19/177 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant un groupe d’images [GOP]

Abrégé

An ultra-miniaturized wireless-controlled patch-type drug pump and a production method thereof, in the field of biomedical engineering device technology, are disclosed. The pump utilizes near-field communication (NFC) technology commonly found in smartphones to power the circuit. It injects drug into patients' bodies via volume alteration of a thermal expansion material and a gas generated by an electrolytic electrode, attaining pre-meal bolus and basal rate drug infusion. The drug pump has a relatively simple structure, a small size, and no need for an internal power supply, thereby alleviating at least some of the burden on patients and enhancing the comfort and convenience of wearing the pump. Meanwhile, it can be controlled through a smartphone application, simplifying the operation(s) of the pump and providing users with a precise and convenient drug injection approach.

Classes IPC  ?

• A61M 5/155 - Perfusion sous pression, p. ex. utilisant des pompes utilisant des réservoirs sous pression, p. ex. au moyen de pistons mis sous pression par un gaz
• A61M 5/145 - Perfusion sous pression, p. ex. utilisant des pompes utilisant des réservoirs sous pression, p. ex. au moyen de pistons
• A61M 5/142 - Perfusion sous pression, p. ex. utilisant des pompes

Abrégé

An identity authentication method based on a building Internet of Things. The method comprises: a client sending a first request message for acquiring an anonymous identifier to a server; when the first request message passes verification against a real user information table previously uploaded to a private blockchain, the server generating an anonymous identifier on the basis of a user authentication identifier, uploading anonymous user information comprising the anonymous identifier to an anonymous user information table of a consortium blockchain, and returning the anonymous identifier to the client; the client sending a second request message for acquiring an anonymous credential to a first management node; and when it is verified on the basis of the anonymous user information table that a user corresponding to the anonymous identifier has permission to access a target building device, the first management node generating an anonymous credential corresponding to the anonymous identifier, and returning the anonymous credential to the client.

Classes IPC  ?

• H04L 9/40 - Protocoles réseaux de sécurité

Abrégé

A method for constructing an infrared imaging dataset of gas leakage based on computational fluid dynamics includes steps of: establishing a three-dimensional physical model of a gas leakage field scene; meshing and simulating based on the computational fluid dynamics to obtain leaking gas mole fractions of each mesh under time steps, and constituting three-dimensional gas concentration data corresponding to each frame; using optical gas imaging based on a pinhole camera model, imaging the three-dimensional gas concentration data to obtain initial images, and calculating gas concentration path-lengths corresponding to pixel points in each frame of the initial images; and performing maximum-minimum value normalization and generating grayscale images, thereby constructing the infrared imaging dataset of the gas leakage. The method can not only be used in leakage classification tasks and localization tasks, but can also be used in training tasks related to the leakage concentration.

Classes IPC  ?

• G01N 21/35 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01N 21/3504 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge pour l'analyse des gaz, p. ex. analyse de mélanges de gaz
• G06F 30/28 - Optimisation, vérification ou simulation de l’objet conçu utilisant la dynamique des fluides, p. ex. les équations de Navier-Stokes ou la dynamique des fluides numérique [DFN]
• G06F 113/08 - Fluides

Abrégé

A method for synthesizing arbitrary distribution noise signal includes two parts. An upper computer fits H given distribution function ƒ(x) to obtain H pluralities of K pairs of means μkh and variances σkh, by using Expectation Maximization algorithm based on a weakened Gaussian Mixture Model. An FPGA stores H pluralities of K pairs of means μkh and variances σkh into RAM, function values that box-muller transformation needs into ROM 1 and ROM 2, then read out two function values and multiply them to obtain random number xn, means μkh and variances σkh are read out from RAM to synthesizing kth Gaussian noise signal yknh, after amplitude limitation and normalization, obtained analogy signal is amplified Amax−Amin times and set bias voltage to Amin to obtain analogy noise signal with amplitude interval. An arbitrary distribution noise signal with specific distribution is outputted.

Classes IPC  ?

• G06F 7/58 - Générateurs de nombres aléatoires ou pseudo-aléatoires

Abrégé

A fault diagnosis method for the RF front-end circuit of a MIMO system includes using a Synchronous Enhancement Extracting Transform (SEET) to pre-process the acquired fault signal to extract fault feature, creating a fault identification model fused by a complex field based asymmetric convolutional neural network and a complex field based multi-head attention module to assign fault feature weights, extract key feature and identify fault status. The SEET can extract fault feature components, and calculate its real field feature and imaginary field feature to obtain a real field two-dimensional matrix i and an imaginary field two-dimensional matrix q, thus an enhanced time-frequency feature is obtained. The fault identification model is used for a transform from a complex field feature space to a high dimensional space and realizing the assignment of fault feature weights, key features extraction and fault status identification.

Classes IPC  ?

• G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux

Abrégé

Provided are a reinforcement learning method and system based on sequential decision-making, a device, and a medium. The method includes: preprocessing historical trajectory data of reinforcement learning to generate preprocessed historical trajectory data to train a Transformer network model, and transforming the reinforcement learning into a language conversion model task by using a text conversion mechanism in the Transformer network model, to generate a trained Transformer network model, where the Transformer network model is used to predict action information at a next time point in a historical environment, and determine a maximum target reward value in a historical environmental state to obtain a complete trajectory in the historical environmental state; and predicting action information at the next time point in a real environmental state by using the trained Transformer network model, to obtain a complete trajectory in the real environmental state.

Classes IPC  ?

• G06N 3/092 - Apprentissage par renforcement
• G06N 3/0455 - Réseaux auto-encodeursRéseaux encodeurs-décodeurs

Abrégé

Provided are a method and system for novel-view image synthesis and rendering, a device and a medium. The method includes: acquiring initial information of a target model; performing neural texturing on the initial information to obtain neural texture (NT) information; and inputting the NT information to a synthesis rendering model to obtain a rendered image, where the synthesis rendering model includes an NT input module, an NT learning network module, and a differentiable renderer that are connected to each other; the NT input module receives the NT information, and transmits the NT information to the NT learning network module; the NT learning network module performs convolution and activation as well as concatenation on the NT information to obtain NT processed information; and the differentiable renderer adjusts and renders the NT processed information in a neural rendering manner to obtain the rendered image.

Classes IPC  ?

• G06T 15/04 - Mappage de texture

Abrégé

The present disclosure provides a three-dimensional semantic scene graph (3DSSG) generation method and system, and an electronic device, and relates to the field of three-dimensional (3D) scene graph generation. The method includes: obtaining a point cloud set and an object segmentation result of a target scene; determining a point cloud subset of each object according to the point cloud set and the object segmentation result; and determining a 3DSSG of the target scene according to a point cloud subset of any object and object auxiliary information by using a 3DSSG prediction model, where the 3DSSG prediction model is obtained by training a 3DSSG initial prediction model by using a training dataset; and the 3DSSG prediction model includes a Transformer-based feature extractor, a first multi-layer perceptron (MLP), a graph neural network (NN)-based relationship reasoning module, and a scene graph generation module. The present disclosure improves accuracy of generating a 3DSSG.

Classes IPC  ?

• G06V 10/86 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant les représentations syntaxiques ou structurelles du motif d’image ou vidéo, p. ex. reconnaissance des chaînes symboliquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant des correspondances graphiques
• G06V 10/26 - Segmentation de formes dans le champ d’imageDécoupage ou fusion d’éléments d’image visant à établir la région de motif, p. ex. techniques de regroupementDétection d’occlusion
• G06V 10/77 - Traitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source
• G06V 10/774 - Génération d'ensembles de motifs de formationTraitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source méthodes de Bootstrap, p. ex. "bagging” ou “boosting”
• G06V 10/82 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant les réseaux neuronaux

Abrégé

A backscatter communication synchronization and control method based on an ambient cellular OFDM signal, which method relates to the technical field of wireless communications. The method comprises the following steps: S10, a sending end sending an ambient cellular OFDM signal, wherein the ambient cellular OFDM signal carries synchronization and control information; and S20, a backscatter tag acquiring the synchronization and control information from the ambient cellular OFDM signal, wherein step S20 comprises: the backscatter tag using an envelope detection circuit to convert the ambient cellular OFDM signal into a digital pulse signal; the backscatter tag establishing synchronization with the sending end by means of performing detection on a rising edge of the digital pulse signal; and the backscatter tag identifying control information of the sending end by means of measuring multiple pulse widths of the digital pulse signal. The method realizes reliable synchronization and control without relying on an additional excitation signal.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

The present disclosure a dual-beacon electro-optical fusion terahertz communication tracking and aiming system and method. The system comprising a transmitter and a receiver, the transmitter includes a transmitting antenna, a first control module, a first communication module, a first information acquisition module, a first image acquisition and processing module, a first beam emitting end and a first gimbal. The receiver includes a receiving antenna, a signal processing module, a second control module, a second communication module, a second information acquisition module, a second image acquisition and processing module, a second beam emitting end and a second gimbal. Based on the disclosure, by means of a laser beacon and a terahertz beacon, the transmitter and the receiver in the terahertz communication system perform adjustment and alignment in real time, such that it is ensured that the terahertz communication system still keeps stable communication during movement.

Classes IPC  ?

• H04B 10/90 - Systèmes de transmission non optiques, p. ex. systèmes de transmission utilisant un rayonnement corpusculaire non photonique
• H04B 10/112 - Transmission dans la ligne de visée sur une distance étendue
• H04B 10/50 - Émetteurs

Abrégé

A 3D reconstruction method for PCB solder joints based on neural rendering, including using the signed distance function (SDF) to represent the solder joint surface, combining the bidirectional reflectance distribution function (BRDF) with the calibrated incident angle to represent the light intensity of solder joint images, and then unifying them into the neural rendering framework to optimize. The method uses existing solder joint inspection equipment to collect solder joint image, and reconstructs high resolution 3D reconstruction of solder joint from a single image with low cost.

Classes IPC  ?

• G06F 30/32 - Conception de circuits au niveau numérique
• G06F 115/12 - Cartes de circuits imprimés [PCB] ou modules multi-puces [MCM]
• H05K 1/11 - Éléments imprimés pour réaliser des connexions électriques avec ou entre des circuits imprimés

Abrégé

The present application relates to a laterally diffused metal-oxide-semiconductor device and a preparation method therefor. The laterally diffused metal-oxide-semiconductor device comprises: a substrate structure 11; a first doped region 111, which is arranged in the substrate structure 11; a first well region 115 and a drain region 113, which are arranged in the first doped region 111 at intervals; a source region 112, which is arranged in the first well region 115; a variable-K dielectric layer 12, which is embedded in the first doped region 111 and is located between the first well region 115 and the drain region 113, wherein in a direction from a front surface of the substrate structure 11 to a back surface of the substrate structure 11, a dielectric constant of the variable-K dielectric layer 12 gradually increases; and a super-junction structure 13, which is arranged in the first doped region 111 on the side of the variable-K dielectric layer 12 that is close to the back surface of the substrate structure 11.

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/78 - Transistors à effet de champ l'effet de champ étant produit par une porte isolée

Abrégé

An inverter circuit and inverter module without high-side power transistors are provided. The inverter circuit consists of at least two inverter modules connected in a ring structure. Each inverter module includes: A pre-filter circuit, having a signal input terminal and a signal output terminal, wherein the signal input terminal serves as the modulation signal input terminal; A central filter circuit, including a DC power input terminal and an AC power output coil, with the signal input terminal of the central filter circuit connected to the signal output terminal of the pre-filter circuit; A signal output circuit, with its signal input terminal connected to the signal output terminal of the central filter circuit, and its signal output terminal serving as the modulation signal output terminal. The inverter circuit and the inverter module enable a significant reduction in inverter costs and simplifies the controller algorithm.

Classes IPC  ?

• H02M 1/00 - Détails d'appareils pour transformation
• B60L 58/10 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries
• H02M 1/38 - Moyens pour empêcher la conduction simultanée de commutateurs
• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
• H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions

Abrégé

Provided in the present invention is a video stabilization method that deeply integrates optical flow and IMU data. The method comprises: acquiring and preprocessing data, computing optical flow, computing historical data of an original pose and a stable pose, predicting a stable camera pose, implementing video stabilization, and training a deep learning model, wherein computing the optical flow involves mixing the optical flow and translation of a camera between adjacent frames as parameters of a translational motion of the camera and inputting the parameters into a deep learning network; computing the historical data of the original pose and the stable pose and predicting the stable camera pose involve using an LSTM network to train and predict stabilization quaternion; and implementing video stabilization involves dividing a video frame into rectangular grids, transforming vertices of the grids by means of the quaternion output by the deep learning network, obtaining each pixel value in the video frame by means of performing quadratic interpolation on four vertices of the grid where the pixel value is located, and processing each pixel value to obtain a stabilized video frame. The method of the present invention can adapt to complex motion scenarios and provide a highly stable video output.

Classes IPC  ?

• H04N 23/68 - Commande des caméras ou des modules de caméras pour une prise de vue stable de la scène, p. ex. en compensant les vibrations du boîtier de l'appareil photo

Abrégé

The present invention provides a back segmentation method based on improved Mask RCNN. The method comprises the following steps: collecting adolescent forward-bending bare back human body images to obtain a color image dataset; manually annotating human body bare back regions to obtain annotation files corresponding to original color images; constructing an improved Mask RCNN framework; training an improved Mask RCNN network to obtain a human body bare back segmentation model; and using the back segmentation model to obtain background-free human body bare back. The present invention effectively improves a feature pyramid in a Mask RCNN framework in light of an artificial intelligence technology and an image processing technology, and improves the accuracy of human body back region segmentation on the basis of instance segmentation characteristics of Mask RCNN.

Classes IPC  ?

• G06T 7/10 - DécoupageDétection de bords

Abrégé

An intelligent recommendation method based on user behavior features. The method comprises data collection, data organization, construction of an LR-based CTR model, construction of a CIN-based CTR model, and model selection and recommendation. On the basis of the design idea of a CTR recommendation model, the method takes into account user behavior features such as viewing, purchasing and favoriting, thus making reasonable recommendations on the basis of behaviors of user groups; in addition, massive user data is cleaned and reshaped to filter out valid data, thereby improving the training speed; furthermore, in order to enhance the prediction efficiency and prediction accuracy, a high-order explicit feature interaction terms algorithm is additionally introduced. The method effectively improves the process of conventional recommendation algorithms, thus enhancing the recommendation accuracy.

Classes IPC  ?

• G06F 16/9535 - Adaptation de la recherche basée sur les profils des utilisateurs et la personnalisation

Abrégé

An image classification neural network architecture searching method based on a social evolution algorithm. The method comprises: constructing an image classification neural network; executing in the image classification neural network an individual screening operation, a group organization tackling operation, an individual innovation operation, a failure tolerance mechanism and a development resource supply operation; searching for an optimal neural network architecture; and using the calculated image classification neural network to perform image classification.

Classes IPC  ?

• G06V 10/764 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant la classification, p. ex. des objets vidéo

Abrégé

The present invention relates to the field of knowledge graph reasoning, and disclosed is a neural architecture search-based knowledge graph link prediction method. By incorporating the characteristics of existing mature networks, certain constraints are imposed on changes in network search, for example, the sequential order of a convolution kernel layer and a pooling layer in a same cell is constrained, and a parallel/serial structure of a network layer in a same cell is also constrained by distance, such that a found architecture is more in line with existing empirical cognition, thereby reducing the probability of searching for poor networks, saving the computational overhead, and improving the search efficiency.

Classes IPC  ?

• G06F 16/906 - GroupementClassement
• G06F 16/901 - IndexationStructures de données à cet effetStructures de stockage
• G06N 3/0985 - Optimisation d’hyperparamètresMeta-apprentissageApprendre à apprendre
• G06N 3/0464 - Réseaux convolutifs [CNN, ConvNet]
• G06N 3/042 - Réseaux neuronaux fondés sur la connaissanceReprésentations logiques de réseaux neuronaux
• G06N 3/0455 - Réseaux auto-encodeursRéseaux encodeurs-décodeurs
• G06N 3/006 - Vie artificielle, c.-à-d. agencements informatiques simulant la vie fondés sur des formes de vie individuelles ou collectives simulées et virtuelles, p. ex. simulations sociales ou optimisation par essaims particulaires [PSO]
• G06N 5/02 - Représentation de la connaissanceReprésentation symbolique

Abrégé

The present invention relates to the technical field of wireless communications. Disclosed is an adaptive non-orthogonal uplink multiple access method based on energy consumption. In the present invention, a plurality of users are paired on the basis of their distances from a base station; for a user close to the base station and having a small configured transmitting power, a DFT-s-OFDM waveform is used, and for a user far away from the base station and having a large configured transmitting power, the waveform of a signal to be transmitted is adaptively selected on the basis of the device energy level; that is, the DFT-s-OFDM waveform can be selected when the energy consumption level is high, and a low-energy-consumption waveform CE-OFDM is used when the energy consumption level is low. In the present invention, improved serial interference cancellation detection suitable for a new uplink access scheme is further configured at a receiving end; by means of the detection mode, when the waveform of a remote user is unknown to the base station, global detection can be performed by means of pattern recognition to complete data detection of the remote user. By means of blind recognition by a base station, additional signaling or resource overhead related to waveform indication can be effectively avoided.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

A method for predicting adverse reactions between drugs based on multi-attribute and multi-kernel representation learning is provided. Aiming at existing differences of different drug properties in revealing a potential characteristic of adverse reactions between drugs and preference and tendency of different kernel functions themselves in calculating attribute representation similarities between drugs, the present invention, based on multi-attribute representations of drugs, provides a multi-kernel representation learning model, designs a distance learning strategy of kernel functions and a reconstruction strategy of the kernel functions, selects a representative kernel function, constructs an optimal kernel function combination by incidence relation between the representative kernel functions and original kernel function, reveals a relationship between the multi-attribute similarities of the drugs and the adverse reactions between drugs, and realizes prediction of the adverse reactions between drugs based on multi-attribute and multi-kernel representations.

Classes IPC  ?

• G16C 20/10 - Analyse ou conception des réactions, des synthèses ou des procédés chimiques
• G16C 20/70 - Apprentissage automatique, exploration de données ou chimiométrie

Abrégé

Disclosed in the present invention are an age-of-sensing analysis and optimization method for a wireless power supply sensor network. The method comprises the following steps: S1, determining a network model; S2, determining a MAC layer model; S3, determining a channel model; S4, on the basis of a multi-segment formula, fitting a nonlinear energy-receiving model, and calculating the decoding success probability of a single sensor; S5, calculating the possibility of information being successfully received in a fusion center under a sensing information requirement threshold; S6, using a hypothesis testing theory to model a fusion-sensing reliability model, so as to obtain the probability of credible fusion; S7, by means of a joint sensing-transmission success possibility, acquiring a closed-form expression of age of sensing, and formulating an information timeliness optimization problem; and S8, respectively optimizing a sensor power supply duration, a fusion information demand threshold, and sensor deployment, so as to give a minimum age of sensing. By means of the present invention, age of sensing is optimized on the basis of the analysis thereof, thereby improving the timeliness of sensing information.

Classes IPC  ?

• H04W 4/38 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques pour la collecte d’informations de capteurs

Abrégé

Provided is an individual-tree segmentation method of UAV LiDAR point cloud based on canopy morphology. The method uses woodland data obtained by a UAV LiDAR to: extract initial canopies from a CHM based on a region growing algorithm, determine whether each initial canopy is a correct segmentation canopy according to the number of local density maximum points in each initial canopy, finely segment each wrong segmentation canopy according to canopy morphology to obtain an updated set of tree tops, and finally use each of the updated set of tree tops as a seed point for performing the region growing algorithm to thereby obtain a final individual-tree segmentation result. The method make full use of height information and density information contained in a tree point cloud; and under the guidance of the density information, a wrong segmentation tree can be more accurately identified.

Classes IPC  ?

• G06T 7/187 - DécoupageDétection de bords impliquant des croissances de zonesDécoupageDétection de bords impliquant des fusions de zonesDécoupageDétection de bords impliquant un étiquetage de composantes connexes
• G06T 7/11 - Découpage basé sur les zones
• G06T 7/155 - DécoupageDétection de bords impliquant des opérateurs morphologiques
• G06T 7/521 - Récupération de la profondeur ou de la forme à partir de la télémétrie laser, p. ex. par interférométrieRécupération de la profondeur ou de la forme à partir de la projection de lumière structurée

Abrégé

In a fabrication method for a package structure, a copper foil is provided, electroplating is performed on the copper foil to form a cavity sacrificial post, a dielectric material is laminated to form a dielectric layer, wherein an end face of the cavity sacrificial post is exposed to the dielectric layer, a wiring layer is formed on the dielectric layer, the cavity sacrificial post is removed by etching to form a through cavity, a bonding pad is formed on the wiring layer, a reverse side of a device is mounted on the copper foil in the through cavity, and a terminal of the device is wire-bonded with the bonding pad.

Classes IPC  ?

• H01L 21/48 - Fabrication ou traitement de parties, p. ex. de conteneurs, avant l'assemblage des dispositifs, en utilisant des procédés non couverts par l'un uniquement des groupes ou
• H01L 23/00 - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide

Abrégé

The present invention relates to the field of big data and business intelligence, and in particular to an online retail data prediction system and method. The method comprises the following steps: acquiring a first dataset and a second dataset, wherein both the first dataset and the second dataset comprise several years of data, and each year of data comprises two missing values; and in respect of the problem of an online retail sales dataset including missing values with unique features, performing relatively accurate imputation on the basis of data trends, and on the basis of features of an imputed complete dataset, using prediction model groups matching the features to perform prediction, thereby improving the accuracy of online retail sales prediction.

Classes IPC  ?

• G06Q 30/0202 - Prédictions ou prévisions du marché pour les activités commerciales

Abrégé

A lateral power semiconductor device layout and a device structure belong to the technical field of power semiconductor devices. A method for designing a lateral power semiconductor device layout with high integrity and high cell density has the following advantages of reducing a specific on-resistance of the device, increasing a width of a channel per unit area, improving the current capability of the device, optimizing the static characteristic of the device, reducing the area of a drain region and the parasitic capacitance of the device, reducing the delay time of a cell switch caused by an excessively long gate electrode of a traditional finger cell, optimizing the dynamic characteristic of the device, optimizing the cell edge of the device and the curvature effect of a terminal, and reducing the pre-breakdown risk of the device.

Classes IPC  ?

• H01L 29/78 - Transistors à effet de champ l'effet de champ étant produit par une porte isolée
• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/417 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative transportant le courant à redresser, à amplifier ou à commuter

Abrégé

An integrated structure of an ultrafast response hydrogen sensor includes: a gas path chamber; a gas extractor fixed to a gas inlet of the gas path chamber; and a first hydrogen sensor and a second hydrogen sensor provided inside the gas path chamber; wherein the gas extractor is located in an identical straight line with the first hydrogen sensor and the second hydrogen sensor; the first hydrogen sensor and the second hydrogen sensor each have an Port A and a Port B, and DC voltage is applied to the Port A of the first hydrogen sensor and the Port B of the second hydrogen sensor, and the Port B of the first hydrogen sensor is connected to the Port A of the second hydrogen sensor to form a shared port, and the shared port serves as a voltage output port.

Classes IPC  ?

• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes

Abrégé

A power semiconductor device, including a cell region, a transition region, and a terminal region. The transition region is located between the cell region and the terminal region of the device. A first conduction type substrate, a first conduction type epitaxial layer located above the first conduction type substrate, and a first conduction type buffer layer located in the first conduction type epitaxial layer are jointly arranged at the bottoms of the cell region, the transition region, and the terminal region of the device. In a high-current application, since the cell region occupies the largest area of a chip, in a case that breakdown can occur in the cell region and the current can be discharged through the cell region. On the basis of ensuring the BV of the terminal region, a silicon layer step is formed by elevating the position of a top structure of the terminal region.

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices

Abrégé

2 different capacitance values can be generated to reduce the chip area consumption. This structure can reduce the error to LSB/4 and the weighting error of the ADC, and increases the effective number of bits of the ADC without excessively increasing comparator gain.

Classes IPC  ?

• H03M 1/60 - Convertisseurs analogiques/numériques avec conversion intermédiaire en fréquence d'impulsions
• H03M 1/10 - Calibrage ou tests
• H03M 1/40 - Valeur analogique comparée à des valeurs de référence uniquement séquentiellement, p. ex. du type à approximations successives du type à recirculation
• H03M 1/46 - Valeur analogique comparée à des valeurs de référence uniquement séquentiellement, p. ex. du type à approximations successives avec convertisseur numérique/analogique pour fournir des valeurs de référence au convertisseur

Abrégé

Disclosed in the present application is a fault determination method. The fault determination method for intelligent building fault event extraction based on contrastive learning comprises: inputting text to be recognized into a trigger word extraction module of a target fault recognition model, and acquiring at least one golden trigger word, which is outputted by the trigger word extraction module; and inputting the at least one golden trigger word into a trigger word classification module of the target fault recognition model, and acquiring target fault information, which is outputted by the trigger word classification module.

Classes IPC  ?

• G06F 16/35 - PartitionnementClassement

Abrégé

Embodiments of the present disclosure relate to the field of acoustic sensing demodulation with high signal-to-noise ratio, real-time demodulation, and high sensitivity, and in particular, to a parallel sensing and demodulation system for acoustic waves based on dual optical frequency combs. The present disclosure introduces dual optical frequency combs as multi-path parallel input light sources, leveraging features of the dual optical frequency combs including narrow linewidth, stable power, high sensitivity, and the capability of precisely converting signals from the optical domain to the radio frequency domain, so the dual optical frequency combs can be used as multi-channel parallel input light sources for acoustic array detection. Besides, some embodiments of the present disclosure employ three-wavelength adaptive demodulation technology to ensure that the detection of acoustic wave signals at every moment has a high signal-to-noise ratio and improved sensitivity for detecting weak signals.

Classes IPC  ?

• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p. ex. des moyens optiques

Abrégé

Provided is a fringe line detection and phase unwrapping method and system based on an FL-Net convolutional neural network. The method includes: constructing the FL-Net convolutional neural network; detecting fringe lines of an input image by using the FL-Net convolutional neural network to obtain an image with detected fringe lines; performing circulation integral on the detected fringe lines to repair the detected fringe lines to thereby obtain an image with repaired fringe lines; performing path integral on the repaired fringe lines to unwrap the repaired fringe lines to thereby obtain an image with unwrapped fringe lines; and identifying error points of the unwrapped fringe lines by using the FL-Net convolutional neural network; and processing the error points. Specifically, an HDC method is used to replace a down-sampling method to avoid the loss of resolution, and residual connection is used to prevent the network from being too deep.

Classes IPC  ?

• G06T 5/60 - Amélioration ou restauration d'image utilisant l’apprentissage automatique, p. ex. les réseaux neuronaux
• G06T 5/30 - Érosion ou dilatation, p. ex. amincissement
• G06T 5/73 - Élimination des flousAccentuation de la netteté

Abrégé

A rice-crop intensity identification method based on radar time series observation and temperature analysis is provided. Capturing of diversified periodic characteristics of time series backscatter and detection of backscatter troughs are achieved through time series reconstruction and trough identification; potential phenological phases corresponding to the backscatter troughs are determined through potential rice phenological phase estimation; and through temperature limitation of rice phenological phase, temperature suitability of potential rice phenological phases is evaluated, a backscatter trough that does not satisfy a temperature condition is removed by combining a rice growth mechanism and a regulation of rice-crop intensity, thereby realizing the identification of the rice troughs and the correction of the overestimation of the rice-crop intensity, and finally realizing the identification of rice-crop intensity.

Classes IPC  ?

• G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
• G01S 13/88 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques

Abrégé

The present invention discloses a pipeline defect detecting and positioning method based on multi-sensor information fusion, which belongs to the technical field of pipeline non-destructive testing. The method comprises the following steps of performing state segmentation processing on a pipeline according to a pipeline defect detection signal and/or a three-axis attitude signal of a pipeline detection equipment in the pipeline, positioning a pipeline defect signal in the pipeline defect detection signal to a pipeline section in a corresponding state, and calculating a position of the pipeline defect signal in pipeline section in each state according to a running speed, the three-axis attitude signal, and mileage information of the pipeline detection equipment in the pipeline section in the corresponding state. According to the invention, the pipeline is segmented so that the pipeline defect can be preliminarily positioned in the pipeline section in a certain state.

Classes IPC  ?

• G01N 27/90 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en utilisant les courants de Foucault

Abrégé

Disclosed are a perovskite solar cell and a fabrication method thereof. The perovskite solar cell includes an electron transport layer, a perovskite layer, and a hole transport layer, where the hole transport layer includes an inorganic substance serving as a hole transport material, and an organic layer including a carbazole derivative is formed on the hole transport layer. A combination of a carbazole derivative and an inorganic material serving as a hole transport layer can allow the preparation of a perovskite solar cell with a high conversion efficiency.

Classes IPC  ?

• H10K 30/86 - Couches à haute mobilité des trous, p. ex. de transport des trous ou couches de blocage des électrons
• H10K 30/40 - Dispositifs organiques sensibles au rayonnement infrarouge, à la lumière, au rayonnement électromagnétique de plus courte longueur d'onde ou au rayonnement corpusculaire comprenant une structure p-i-n, ayant p. ex. un absorbeur pérovskite entre des couches de transport de charge de type p et de type n
• H10K 30/57 - Dispositifs photovoltaïques [PV] comprenant des jonctions multiples, p. ex. des cellules PV en tandem
• H10K 85/20 - Composés de carbone, p. ex. nanotubes de carbone ou fullerènes
• H10K 85/50 - Pérovskites organiquesPérovskites hybrides organiques-inorganiques [HOIP], p. ex. CH3NH3PbI3
• H10K 85/60 - Composés organiques à faible poids moléculaire

Abrégé

Disclosed in the present application is a rapid approximate analysis method for a mutual-coupling-containing pattern of a large-scale ultra-wideband heterogeneous array. The method comprises the following steps: according to the types of elements used, dividing a heterogeneous array into a plurality of sub-arrays, wherein the types of elements in each sub-array are identical; according to the positions of the elements, classifying the elements in the sub-arrays; selecting representative elements for representing environmentally similar elements, removing rows and columns that do not have the representative elements, and retaining all key features of the heterogeneous array; performing full-wave simulation on a constructed compact representative array, extracting AEPs of all the representative elements, and storing same; and replacing AEPs of the environmentally similar elements with the AEPs of the representative elements, performing approximate computing to obtain patterns of all the sub-arrays, and superimposing the obtained results to obtain a mutual-coupling-containing pattern of the heterogeneous array. The present application can effectively avoid the enormous operational resource overheads of full-wave simulation of a large-scale heterogeneous array, thus greatly reduce the complexity of computing of a mutual-coupling-containing pattern, and can also ensure the accuracy of the obtained mutual-coupling-containing pattern.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu

Abrégé

Provided are a scattering aperture imaging method and a device, a system and a storage medium. The method mainly includes four steps of scattering point position estimation, azimuth resampling, range compensation and synthetic aperture radar imaging. A phased array radar with a fixed position is used for NLOS imaging, and the radar can control a beam to scan in space, which is equivalent to a scattering aperture moving along a relay surface. Therefore, the method can realize converting NLOS imaging into LOS synthetic aperture radar imaging, which can be suitable for the situation that a relay surface is rough and the relay surface with more complicated surface condition, thus widening the application range of radar NLOS imaging.

Classes IPC  ?

• G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
• G01S 7/295 - Moyens pour transformer des coordonnées ou pour évaluer des données, p. ex. en utilisant des calculateurs

Abrégé

The present invention discloses a Self-detection circuit based on power detector, comprising a power detector, a coupler, a phased array transmitting channel 1 and a phased array transmitting channel 2, and the power detector is divided into two working modes of phase test and amplitude test. The problems that the self-test circuit is complex and large in chip area are solved.

Classes IPC  ?

• G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux
• H01Q 3/36 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante faisant varier la phase par des moyens électriques avec des déphaseurs variables

Abrégé

The present disclosure provides a blockchain sharding method, system, and server based on locally repairable system codes. The blockchain sharding system includes k original shards and n−k encoding shards. In each round of consensus, each original shard and m corresponding encoding shards form a local verification group (m<

Classes IPC  ?

• H04L 67/10 - Protocoles dans lesquels une application est distribuée parmi les nœuds du réseau
• G06F 16/27 - Réplication, distribution ou synchronisation de données entre bases de données ou dans un système de bases de données distribuéesArchitectures de systèmes de bases de données distribuées à cet effet
• H04L 67/1097 - Protocoles dans lesquels une application est distribuée parmi les nœuds du réseau pour le stockage distribué de données dans des réseaux, p. ex. dispositions de transport pour le système de fichiers réseau [NFS], réseaux de stockage [SAN] ou stockage en réseau [NAS]

Abrégé

The present disclosure provides a security protection method for a sharded blockchain system, and the sharded blockchain system includes one core shard and multiple common shards. A node in the common shard can additionally store historical blocks of other shards in addition to storing historical blocks of the shard in which the node is located. When a single shard in the system is corrupted, the corrupted shard cannot provide a valid verification result for a transaction that the corrupted shard is responsible for verifying. In this case, honest nodes that store historical blocks of the corrupted shard can submit reports on a transaction verification result to the core shard. The core shard confirms validity of the report, and the system performs reward or punishment on the node submitting the report according to whether the report is valid.

Classes IPC  ?

• G06Q 20/38 - Protocoles de paiementArchitectures, schémas ou protocoles de paiement leurs détails
• G06Q 20/02 - Architectures, schémas ou protocoles de paiement impliquant un tiers neutre, p. ex. une autorité de certification, un notaire ou un tiers de confiance

Abrégé

Disclosed is a three-axis Hall angle sensor with an accuracy of 0.3°. The sensor is mainly designed by means of finite element software and COMSOL Multiphysics. The present specification will be mainly performed in three steps. In the first step, a cross-shape horizontal Hall element for measuring the magnetic field in the vertical direction, that is, the direction z, is studied. The second section mainly studies a three-contact four-Hall vertical element for measuring the magnetic field in the directions x, y. The third part is to design the angle sensor. Compared with the horizontal Hall element, the vertical Hall element has a relatively large offset, therefore, four vertical Hall elements are used to measure the magnetic field in the horizontal direction, and two complementary vertical structures are used to eliminate the error when the magnetic field in the same horizontal direction is measured.

Classes IPC  ?

• G01R 33/02 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques
• G01R 33/07 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques en utilisant des dispositifs galvano-magnétiques des dispositifs à effet Hall

Abrégé

A lateral power semiconductor device is provided and includes a second doping type substrate, a first doping type buried layer, a second doping type epitaxial layer, a first doping type drift area, a second doping type first body area, a first doping type drain area, a first doping type source area, a second doping type second body area, a dielectric layer, a control gate, a body electrode, second doping type polysilicon and first doping type polysilicon. The control gate is led out and connected to different potentials; when the device is in an off state, the control gate is connected to a low potential to assist the drift area in depletion; and when the device is in an on state, the control gate is connected to a high potential, and more carriers are induced on a silicon surface below the control gate.

Classes IPC  ?

• H10D 30/65 - Transistors FET DMOS latéraux [LDMOS]
• H10D 30/60 - Transistors à effet de champ à grille isolée [IGFET]
• H10D 62/17 - Régions semi-conductrices connectées à des électrodes ne transportant pas de courant à redresser, amplifier ou commuter, p. ex. régions de canal
• H10D 64/27 - Électrodes ne transportant pas le courant à redresser, à amplifier, à faire osciller ou à commuter, p. ex. grilles

Abrégé

An endoscopic image segmentation method based on a single image and a deep learning network achieves real-time and accurate segmentation for a single case, and provides support for making a treatment plan based on an endoscopic image in clinical medicine. The endoscopic image segmentation method first proposes a single image-based training set generation method to automatically generate a training set, and further proposes a lightweight deep learning network EUnet to perform feature fitting on the generated training set, to achieve endoscopic image segmentation and obtain a segmentation result of a lesion region. The endoscopic image segmentation method can significantly improve segmentation accuracy and has advantages of a small volume, high real-time performance, and easy operation. Especially in processing of endoscopic images of rare cases such as a gastric cancer and an esophageal cancer, the endoscopic image segmentation method has significant advantages in accuracy and speed, and has clinical application value.

Classes IPC  ?

• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06T 3/4007 - Changement d'échelle d’images complètes ou de parties d’image, p. ex. agrandissement ou rétrécissement basé sur l’interpolation, p. ex. interpolation bilinéaire
• G06T 3/60 - Rotation d’images entières ou de parties d'image
• G06T 7/00 - Analyse d'image
• G06T 7/12 - Découpage basé sur les bords
• G06T 7/13 - Détection de bords
• G06V 10/25 - Détermination d’une région d’intérêt [ROI] ou d’un volume d’intérêt [VOI]
• G16H 30/40 - TIC spécialement adaptées au maniement ou au traitement d’images médicales pour le traitement d’images médicales, p. ex. l’édition

Abrégé

M after performing the gain-offset error correction. Digital correction of sampling data collected from multiple channels in a multi-ADC system is realized while ensuring that respective dynamic ranges of the sampling data with different gains output by the multiple channels are not lost.

Classes IPC  ?

• H03M 1/10 - Calibrage ou tests
• H03M 1/12 - Convertisseurs analogiques/numériques
• H03M 1/16 - Conversion par étapes, avec pour chaque étape la mise en jeu de moyens de conversion identiques ou différents et délivrant plus d'un bit avec modification de l'échelle, c.-à-d. en changeant l'amplification entre les étapes
• H03M 1/18 - Commande automatique pour modifier la plage des signaux que le convertisseur peut traiter, p. ex. réglage de la plage de gain

Abrégé

Provided in the present application are a circuit, a control method therefor, a wireless transceiver system, a chip and an electronic device, which are used for enabling two different working modes to share a same first mixer circuit and a same second mixer circuit. The circuit comprises a first mixer circuit, a second mixer circuit, a first port, a second port, a third port, a fourth port, a first switch and a second switch; the first mixer circuit comprises a first input end and a first output end; the second mixer circuit comprises a second input end and a second output end; the first input end selects, by means of the first switch, to be electrically connected to the first port or the second port; the first output end selects, by means of the first switch, to be electrically connected to the second port or the first port; the second input end selects, by means of the second switch, to be electrically connected to the third port or the fourth port; and the second output end selects, by means of the second switch, to be electrically connected to the fourth port or the third port.

Classes IPC  ?

• H04B 1/401 - Circuits pour le choix ou l’indication du mode de fonctionnement

Abrégé

Disclosed are a method, an apparatus, and a device for predicting adverse drug-drug interactions, and a readable storage medium, and relates to the technical field of pharmaceutical research and development. An objective of the present application is to provide the method, apparatus, and device for predicting adverse drug-drug interactions, and the readable storage medium for solving the above problems. To achieve the above objective, a technical solution adopted by the present application is as follows: acquiring first information; constructing an adverse drug-drug interaction prediction model according to the first information; acquiring second information, where the second information is molecular structure information of two drugs to be predicted; and outputting predicted adverse drug-drug interactions with the second information as an input into the adverse drug-drug interaction prediction model.

Classes IPC  ?

• G16C 20/10 - Analyse ou conception des réactions, des synthèses ou des procédés chimiques
• G16C 20/50 - Conception moléculaire, p. ex. de médicaments

Abrégé

A wireless charging apparatus is provided. The apparatus uses a multi-feed, multi-mode, and resonance coherent working mechanism and wirelessly charges an energy receiving apparatus through a focusing field, thereby effectively improving wireless charging efficiency and implementing miniaturization of an energy receiving antenna. The wireless charging apparatus includes a cavity (1) and a phased array antenna. The cavity (1) includes an even number of side faces (2). The even number of side faces (2) are parallel in pairs. Each side face (2) has a capability of reflecting an electromagnetic wave. The phased array antenna includes an antenna array. The antenna array includes a plurality of antennas (3). The plurality of antennas (3) are disposed on the even number of side faces (2) and are configured to emit electromagnetic waves to charge an energy receiving device (4) placed in the cavity (1).

Classes IPC  ?

• H02J 50/23 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant des micro-ondes ou des ondes radio fréquence caractérisés par le type d'antennes de transmission, p. ex. les antennes-réseau directives ou les antennes Yagi
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques

Abrégé

A heating method, a microwave cooking device (10), and a computer-readable storage medium. The heating method comprises: transmitting a detection signal, the detection signal being used for acting on a food material and causing the food material to generate a reflection signal; according to characteristic parameters, generating heating mode information, at least some of the characteristic parameters being determined by means of the detection signal and the reflection signal; and according to the heating mode information, determining a heating mode for the food material, the heating mode corresponding to the type of the food material.

Classes IPC  ?

• H05B 6/64 - Chauffage par micro-ondes

Abrégé

Provided is an analysis method for determining gas-bearing situation of an unknown shale reservoir, includes: S1, selecting a shale reservoir of a target interval of a place; and collecting data of parameters of cores of each of a known gas-bearing shale reservoir A and a known water-bearing shale reservoir B; S2, calculating average values of the parameters of each of the reservoirs A and B respectively; S3, calculating average differences of the parameters of each of the reservoirs; S4, calculating covariance values of the parameters of each of the reservoirs; S5, establishing, according to the covariance values, an equation group and resolving discriminant coefficients; S6, establishing a discriminant equation according to the discriminant coefficients and solving a discriminant index; and S7, obtaining values of parameters of cores of a sample of the unknown shale reservoir, calculating a discriminant value, and determining gas-bearing situation of the unknown shale reservoir.

Classes IPC  ?

• G06F 17/18 - Opérations mathématiques complexes pour l'évaluation de données statistiques
• E21B 49/00 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

Disclosed in the present invention is a satellite orbit error prediction method based on digital twin and container technologies, comprising the following steps: S1, constructing a digital twin-based satellite orbit error prediction system; and S2, constructing a container module for precise satellite orbit prediction to perform satellite orbit error prediction: constructing one or more container modules on a digital twin system constructed by a control center, completing initial orbit prediction value collection on the constructed container module, and performing satellite orbit error prediction on the basis of a temporal convolutional network. According to the present invention, the digital twin system and the container module are introduced into satellite orbit prediction by the control center, so that offline training of a machine learning model becomes possible, the problems of burden of calculation under the control center and difficulty in model updating are solved, and orbit prediction errors instead of all available satellite orbit data are used as learning variables, so that the dimensions of input variables are reduced, overfitting during model training is avoided to a certain extent, and prediction precision is improved.

Classes IPC  ?

• G06F 30/27 - Optimisation, vérification ou simulation de l’objet conçu utilisant l’apprentissage automatique, p. ex. l’intelligence artificielle, les réseaux neuronaux, les machines à support de vecteur [MSV] ou l’apprentissage d’un modèle

Abrégé

This invention, falling into the field of radio communication technology, discloses 5G millimeter wave dual-band dual-mode mixer and wireless communication terminal. In the said 5G millimeter wave dual-band dual-mode mixer, the first MOSFET is connected to the source of the second MOSFET and the third MOSFET through its drain, with the first MOSFET connected to the drain of the fourth MOSFET through its drain. The second MOSFET is connected to one end of the first capacitor through its gate, with the other end of the first capacitor connected to the drain of the third MOSFET. The third MOSFET is connected to one end of the second capacitor through its gate and the other end of the second capacitor is connected to the drain of the second MOSFET.

Classes IPC  ?

• H04B 1/16 - Circuits
• H03D 7/14 - Montages équilibrés
• H04B 1/24 - Circuits pour récepteurs ne comportant pas la génération d'une onde locale le récepteur comportant au moins un dispositif semi-conducteur ayant trois électrodes ou plus

Abrégé

r respectively.

Classes IPC  ?

• H04B 7/04 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées
• H04L 27/36 - Circuits de modulationCircuits émetteurs

Abrégé

The present invention belongs to the technical field of 5G millimeter wave communication and discloses a 5G dual-band up-mixer with switching between amplification function and frequency mixing function, and terminal. The first double-balanced active mixer and the second double-balanced active mixer are connected in series, and both ends of the first double-balanced active mixer are connected with a first transformer and a second transformer respectively; both ends of the second double-balanced active mixer are respectively connected with the second transformer and the third transformer; the first double-balanced active mixer is provided with a first MOSFET and a fourth transformer connected with the first MOSFET; the second double-balanced active mixer is provided with a second MOSFET and a fifth transformer connected with the second MOSFET.

Classes IPC  ?

• H03D 7/14 - Montages équilibrés
• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission

Abrégé

The present disclosure provides a flight anti-collision method and apparatus based on electromagnetic field detection of an overhead transmission line. An example method includes: determining whether an overhead transmission line around is an Alternating Current (AC) transmission line or a (Direct Current) DC transmission line; if the overhead transmission line is an AC transmission line, determining a position relationship between an aircraft and the overhead transmission line on the basis of a phase distribution model and an electric field phase and a magnetic field phase measured by a phase detector on the aircraft; if the overhead transmission line around is a DC transmission line, determining the position relationship between the aircraft and the overhead transmission line on the basis of a magnetic field intensity distribution model and the magnetic field intensities collected by magnetic field intensity sensors on the aircraft; and thus controlling the aircraft.

Classes IPC  ?

• G05D 1/243 - Moyens de capture de signaux provenant naturellement de l’environnement, p. ex. signaux optiques, acoustiques, gravitationnels ou magnétiques ambiants
• B64D 45/00 - Indicateurs ou dispositifs de protection d'aéronefs, non prévus ailleurs
• G05D 1/622 - Évitement d’obstacles
• G05D 109/20 - Aéronefs, p. ex. drones

Abrégé

The embodiments of the present disclosure provide a ranging system of a dual optical frequency comb time-of-flight manner based on dispersive Fourier transform. The embodiment of the present disclosure introduces a dispersive Fourier transform technology into a conventional dual optical frequency comb system, which amplifies a stray relationship of a pulse time domain using a dispersion element and obtains a precise position relationship of three pulses directly through interfering fringe information. Therefore, the “dead zone” in the conventional dual optical frequency comb ranging system is eliminated, and the ranging accuracy of the system is greatly improved, and a repetition frequency difference of the dual optical frequency combs can be increased to a magnitude of MHz, which greatly improves the ranging speed. The ranging system has advantages of a large measurement range, a high measurement accuracy, and a high measurement speed.

Classes IPC  ?

• G01S 7/4865 - Mesure du temps de retard, p. ex. mesure du temps de vol ou de l'heure d'arrivée ou détermination de la position exacte d'un pic
• G01S 7/481 - Caractéristiques de structure, p. ex. agencements d'éléments optiques
• G01S 7/484 - Émetteurs
• G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues

Abrégé

Provided in the present invention is a binocular polarization three-dimensional reconstruction method. The method comprises: acquiring a polarized image, and left and right images from a binocular camera; calculating a zenith angle and an azimuth angle; calculating a normal gradient map of an object surface; calculating a binocular vision point cloud of an object; performing normal gradient correction; performing gradient integration surface reconstruction; and calculating true three-dimensional coordinates. By means of the method, the problem of the ambiguity of an azimuth angle calculated in polarization imaging is corrected by using prior information of an object surface that is acquired using a binocular vision method, so as to obtain an accurate normal gradient map; and a point cloud acquired using the binocular vision method is used as a "bridge", relative coordinates obtained by means of polarization reconstruction are converted into absolute coordinates, and a three-dimensional model having true information is obtained by means of reconstruction.

Classes IPC  ?

• H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé

Abrégé

stereooccstereooccdatasmoothsmooth(f) item of the energy function by means of occlusion detection.

Classes IPC  ?

• G06T 7/00 - Analyse d'image

Abrégé

Provided in the present invention is a three-dimensional reconstruction method based on structured light and binocular vision. The method comprises: generating a coding pattern; performing image collection and preprocessing; calculating an absolute phase; calculating depth information by using a binocular stereoscopic vision technique; correcting the absolute phase; and calculating three-dimensional coordinate data. By means of the method, an ordered periods phase shift algorithm is improved on the basis of a Gray code technique, the number of periods is increased, and the precision of three-dimensional reconstruction is improved. Moreover, by means of the present invention, the problem of stripe mutation of an absolute phase in an ordered periods phase shift algorithm is effectively ameliorated on the basis of a binocular stereoscopic vision technique, thereby improving the accuracy of three-dimensional reconstruction.

Classes IPC  ?

• G06T 7/00 - Analyse d'image

Abrégé

The present invention discloses the method and system for predicting adverse drug-drug interactions by recovering the multi-attribute information of drugs and the medium. The method includes: collecting adverse drug-drug interactions data and multi-attribute data of drugs; constructing the recovery model of multi-attribute absent feature of drugs; correcting the recovery model of multi-attribute absent feature of drugs by the cosine similarity regularization term, and solving the corrected recovery model to obtain the common features and unique features of multi-attribute information of drugs; obtaining the multi-attribute information of two drugs, calculating common features and unique features of their multi-attribute information as the inputs of the prediction model to predict their adverse drug-drug interactions. The present invention improves the accuracy of the prediction of the adverse drug-drug interactions, promotes the experimental study of the adverse drug-drug interactions, and ensures the safety of medication.

Classes IPC  ?

• G16C 20/30 - Prévision des propriétés des composés, des compositions ou des mélanges chimiques
• G16C 20/70 - Apprentissage automatique, exploration de données ou chimiométrie

Abrégé

A random transient power test signal generator based on three-dimensional memristive discrete map, which utilizes a three-dimensional parallel bi-memristor Logistic map module to generate two pseudo-random sequences, and based on the sequences, uses two waveform output modules to generate transient voltage and transient current signals respectively, thus the random transient power testing signal is obtained. The map can significantly improve the complexity of chaos and greatly extend its range of chaos. In addition, a performance evaluation shows the map has more robust hyperchaotic behavior in much larger chaos range. Moreover, the random sequences generated by the map module combines with DDS, which can generate a transient power signal with completely random period, starting phase and ending phase. Thus, a stimulated output of the high-precision transient power testing signal with random characteristic is realized, which makes the development and calibration of high-precision measurement of power meters more convenient.

Classes IPC  ?

• G06F 7/58 - Générateurs de nombres aléatoires ou pseudo-aléatoires

Abrégé

A low-complexity panoramic video coding method considering distortion temporal propagation is provided. By analyzing the inter-frame reference relationships under the random access coding structure and establishing the corresponding distortion propagation chain, the method utilizes distortion impact factors of coding units to adjust encoding parameters, thereby optimizing the encoding process. Furthermore, the method addresses the issue of oversampling arising from the varying geometric deformations in different latitude regions during the projection of spherical images in panoramic videos. This is achieved by adjusting coding parameters based on the ratio of area changes at different latitudes. The proposed approach significantly enhances coding performance.

Classes IPC  ?

• H04N 19/149 - Débit ou quantité de données codées à la sortie du codeur par estimation de la quantité de données codées au moyen d’un modèle, p. ex. un modèle mathématique ou un modèle statistique
• H04N 19/147 - Débit ou quantité de données codées à la sortie du codeur selon des critères de débit-distorsion
• H04N 19/169 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif
• H04N 19/172 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant une image, une trame ou un champ
• H04N 19/174 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant une tranche, p. ex. une ligne de blocs ou un groupe de blocs
• H04N 19/597 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif spécialement adapté pour l’encodage de séquences vidéo multi-vues

Abrégé

The present invention belongs to the technical field of image processing, and specifically relates to a zero-delay panoramic video bitrate control method considering time-domain distortion propagation. The method of the present invention mainly involves target bit allocation optimization and global rate-distortion optimization coding, and comprises coding tree unit (CTU)-level bitrate control and time-domain global rate-distortion optimization. The CTU-level bitrate control mainly comprises target bit allocation optimization and bitrate control parameter updating. The time-domain global rate-distortion optimization mainly comprises: using reconstruction error and motion compensation prediction error information of a coded frame to estimate the time-domain dependency of each CTU in the current coding frame and accordingly adjusting rate-distortion optimization parameters of the CTUs; and further, according to the feature that pixel redundancies are increased due to oversampling at two poles during the process of projecting a panoramic spherical figure to a 2D plane (ERP projection), adjusting coding parameters on the basis of a projection area change ratio. The present invention can effectively reduce the coding time, and improves the video coding quality at a given bandwidth.

Classes IPC  ?

• H04N 19/146 - Débit ou quantité de données codées à la sortie du codeur

Abrégé

The present invention belongs to the technical field of image processing, and specifically relates to a low-complexity panoramic video encoding method considering time-domain distortion propagation. The present invention provides a panoramic video encoding method considering time-domain distortion propagation. By means of analyzing an inter-frame reference relationship under a random access encoding structure and establishing a corresponding distortion propagation chain, the present invention uses a distortion impact factor of the current encoding unit for adjusting encoding parameters, so as to achieve the objective of optimization encoding. In view of the problem of oversampling caused by the geometric deformation of different degrees of a spherical image of a panoramic video in different latitude areas during the projection process, the present invention adjusts the encoding parameters according to area change ratios of different latitudes, thus greatly improving the encoding performance.

Classes IPC  ?

• H04N 19/147 - Débit ou quantité de données codées à la sortie du codeur selon des critères de débit-distorsion

Abrégé

The present application relates to the technical field of wireless power transmission. Provided are a wireless power transmission apparatus, a signal processing method, a device and a system, which are used for improving the accuracy and sensitivity of acquiring amplitude and phase information of pilot signals. The apparatus comprises a first channel and a plurality of second channels. The first channel is used for receiving a first pilot signal and outputting a reference signal according to the first pilot signal; and each of the plurality of second channels is used for receiving a second pilot signal and the reference signal and determining the phase and amplitude of the second pilot signal according to the reference signal, namely, the plurality of second channels all perform amplitude and phase identification on second pilot signals of the second channels using the reference signal outputted by the first channel according to the first pilot signal, wherein the phases and amplitudes of the second pilot signals are used for determining a power transmission signal corresponding to the second channels, and the first pilot signal and the second pilot signals are obtained by means of the first channel and the second channels receiving the same pilot signal.

Classes IPC  ?

• H01Q 3/26 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante

Abrégé

A new variable selective etching technology for thick SOI devices. An SOI material is etched by the following steps: (1) providing an SOI wafer; (2) depositing a composite hard mask with a variable selection ratio to replace a traditional hard mask with an invariable selection ratio; (3) applying a photoresist; (4) mask making, namely defining a to-be-etched region by using a photoetching plate; (5) etching the photoresist in the defined region; (6) etching the composite hard mask; (7) removing the photoresist; (8) etching top silicon by using a second etching method at a first selection ratio; and (9) etching a buried oxide layer by using a third etching method at a second selection ratio. The new variable selective etching technology avoids the damage to a side wall of a deep trench when the buried oxide layer is etched, and does not need to use an excessive thick hard mask.

Classes IPC  ?

• H01L 21/033 - Fabrication de masques sur des corps semi-conducteurs pour traitement photolithographique ultérieur, non prévue dans le groupe ou comportant des couches inorganiques
• H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
• H01L 21/027 - Fabrication de masques sur des corps semi-conducteurs pour traitement photolithographique ultérieur, non prévue dans le groupe ou
• H01L 21/311 - Gravure des couches isolantes
• H01L 21/3205 - Dépôt de couches non isolantes, p. ex. conductrices ou résistives, sur des couches isolantesPost-traitement de ces couches
• H01L 21/3213 - Gravure physique ou chimique des couches, p. ex. pour produire une couche avec une configuration donnée à partir d'une couche étendue déposée au préalable

Abrégé

A multiple-access constant envelope orthogonal frequency division multiplexing (OFDM) method and wireless communication system are disclosed. The method and system include a transmitter that sequentially processes the information and/or information bits of each user by digital modulation, symmetric mapping, frequency-domain to time-domain transformation, phase modulation, time-domain to frequency-domain transformation, frequency domain offsetting, frequency-domain to time-domain transformation, and cyclic prefix addition to obtain a baseband transmission signal, which is then sent to one or more receivers through a channel, and a receiver that sequentially processes the received signal by time-domain to frequency-domain transformation, user signal separation, equalization offsetting, frequency-domain to time-domain transformation, phase demodulation, another time-domain to frequency-domain transformation, demapping, and decision-making to obtain detection results for the corresponding user. The present method and system reduce data overlap between users and decrease inter-user interference by applying different phase rotations and/or different offsets to different users, thereby enhancing system performance.

Classes IPC  ?

• H04L 25/02 - Systèmes à bande de base Détails
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

A calibration concentration selection method includes steps of: using a gas sensor array to obtain a concentration variation sequence and a response variation sequence of the gas mixture; constructing and training an AE-BP model; constructing VAE and identically distributing the response variation sequence; inputting the identically distributed response variation sequence into the trained AE-BP model to output a predicted concentration variation sequence; and then normalizing the predicted concentration variation sequence to generate a target concentration variation sequence; sorting a target concentration variation sequence and calculating a response gradient sequence; processing the response gradient sequence for obtaining a corresponding smoothed gradient sequence; if the spike is greater than a preset hyperparameter, finding a large gradient concentration interval; and selecting concentration test points by random uniform sampling according to weights; and selecting concentration test points from all other concentration intervals in the smoothed gradient sequence by random uniform sampling.

Classes IPC  ?

• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes

Abrégé

abcd44) material, wherein the value range of a is 0.3-0.55, the value range of b is 0.45-0.55, the value range of c is 0-0.2, and the value range of d is 1.8-2; and in the ferrite particles, the number of particles having a particle size of 2-11 μm accounts for 50-70%. The filler has the advantages of a low relative density, a wide absorption frequency band and good high-temperature and low-temperature properties, such that the overall mass of a packaged device can be reduced, and the anti-electromagnetic interference frequency band and suitable temperature range of the packaged device are improved.

Classes IPC  ?

• C04B 35/30 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base de ferrites avec l'oxyde de nickel comme oxyde principal avec de l'oxyde de zinc
• C04B 35/622 - Procédés de mise en formeTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
• H01F 1/36 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux substances non métalliques, p. ex. ferrites sous forme de particules
• C08K 3/22 - OxydesHydroxydes de métaux
• H01L 23/29 - Encapsulations, p. ex. couches d’encapsulation, revêtements caractérisées par le matériau

Abrégé

A system for real-time target identification of an unmanned aerial vehicle (UAV) based on an embedded technique and an improved YOLO4 algorithm, and relates to the field of real-time target detection is disclosed. The system for real-time target identification of a UAV based on an embedded technique and an improved YOLO4 algorithm abandons a conventional “one-to-one” mode, and can be used for a plurality of UAV data processing applications, and multiple users in different geographical locations can further remotely manage and control the system. Particularly, in a target identification client of the present disclosure, to obtain a better real-time identification effect, a YOLOv4 target identification algorithm is improved, so that a better identification result and a faster identification speed are obtained.

Classes IPC  ?

• G06T 7/20 - Analyse du mouvement
• B64C 39/02 - Aéronefs non prévus ailleurs caractérisés par un emploi spécial
• G06V 10/94 - Architectures logicielles ou matérielles spécialement adaptées à la compréhension d’images ou de vidéos
• G06V 20/17 - Scènes terrestres transmises par des avions ou des drones
• H04N 23/661 - Transmission des signaux de commande de la caméra par le biais de réseaux, p. ex. la commande via Internet
• H04N 23/667 - Changement de mode de fonctionnement de la caméra, p. ex. entre les modes photo et vidéo, sport et normal ou haute et basse résolutions
• H04W 4/029 - Services de gestion ou de suivi basés sur la localisation
• B64U 101/30 - Véhicules aériens sans pilote spécialement adaptés à des utilisations ou à des applications spécifiques à l’imagerie, à la photographie ou à la vidéographie

Abrégé

A homogenization field device with low specific on-resistance based on multidimensional coupled voltage dividing mechanism includes a first conductive type semiconductor substrate, a first conductive type well region, a first conductive type semiconductor contact region, a second conductive type drift region, a second conductive type well region, a second conductive type semiconductor contact region, a first dielectric oxide layer, a second dielectric oxide layer, a third dielectric oxide layer, a fourth dielectric oxide layer, a polycrystalline silicon electrode of a floating field plate, a polycrystalline silicon electrode of a control gate, a first layer of metal strips and a second layer of metal strips. The first dielectric oxide layer and the polycrystalline silicon electrode of the floating field plate form a vertical floating field plate, and the first layer of metal strips, the second layer of metal strips and the fourth dielectric oxide layer form a surface fixed dielectric capacitor.

Classes IPC  ?

• H01L 29/40 - Electrodes
• H01L 29/423 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative ne transportant pas le courant à redresser, à amplifier ou à commuter

Abrégé

t with a trace of density matrices in the conditional quantum master equation; and replacing the parameter (W, b) with a connection between density matrices in the conditional quantum master equation at imminent moments.

Classes IPC  ?

• G06N 3/04 - Architecture, p. ex. topologie d'interconnexion
• G06N 3/0442 - Réseaux récurrents, p. ex. réseaux de Hopfield caractérisés par la présence de mémoire ou de portes, p. ex. mémoire longue à court terme [LSTM] ou unités récurrentes à porte [GRU]
• G06N 10/20 - Modèles d’informatique quantique, p. ex. circuits quantiques ou ordinateurs quantiques universels

Abrégé

Provided are a method and device for purifying blood on the basis of a blood-repellent breathable film (3), an apparatus, and a device. By means of the air permeability of the blood-repellent breathable film (3), the difference of temperatures inside and outside the blood-repellent breathable film (3) is controlled. When blood flows through the blood-repellent breathable film (3), water in the blood carries metabolic molecules to penetrate through holes in the blood-repellent breathable film (3) in the form of vapor to reach the outside of the blood-repellent breathable film (3), and condenses outside the blood-repellent breathable film (3) to be guided out, such that excessive water and metabolic substances in the blood can be removed under the condition that a dialysate does not need to be used.

Classes IPC  ?

• A61M 1/34 - Filtration du sang à travers une membrane pour en éliminer une matière, c.-à-d. hémofiltration, diafiltration

Abrégé

The present invention belongs to the technical field of wireless communications. Disclosed is a multiple access method for a constant envelope orthogonal frequency division multiplexing system. The method of the present invention comprises: a transmitting end sequentially performing digital modulation, symmetric mapping, frequency domain-time domain transformation, phase modulation, time domain-frequency domain transformation, frequency domain migration, frequency domain-time domain transformation and cyclic prefix adding on information bits of users to obtain a baseband transmission signal and sending same to a receiving end by means of a channel; and the receiving end sequentially performing time domain-frequency domain transformation, user separation, equalization migration, frequency domain-time domain transformation, phase demodulation, time domain-frequency domain transformation, de-mapping and determination on the received signal to obtain detection results of the corresponding users. In the present invention, different phase rotations are performed for different users, such that data aliasing between users is reduced, thereby reducing interference between users and improving system performance.

Classes IPC  ?

• H04L 27/20 - Circuits de modulationCircuits émetteurs
• H04L 27/22 - Circuits de démodulationCircuits récepteurs

Abrégé

A high-dimensional signal transmission method is provided. The method generates M M-dimensional first signals on the basis of M original signals and generates M M-dimensional second signals on the basis of a precoding signal and of the first signals, and finally, a transmitter sums all of the second signals and then transmits by utilizing M subchannels. As such, each subchannel carries information of the M original signals; hence, when any subchannel experiences deep fading, the deep fading is shared jointly by M signals, thus preventing the deep fading from causing a particularly severe impact on any signal. Moreover, all of the original signals can be recovered by utilizing the signals on the other subchannels, thus increasing the systematic resistance against subchannel deep fading. Meanwhile, the system implements the parallel transmission of the M original signals, thus ensuring the throughput of a communication system.

Classes IPC  ?

• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

A circuit and method for simulating real-time reconfigurable general-purpose memristor, nonlinear m-order polynomial fitting of mathematical model of a memristor is performed by using McLaughlin formula. m is related to the amplitude and frequency of an input signal and the fitting accuracy, thus the mathematical model of a memristor can be easily and quickly adapted by updating the polynomial order, the polynomial coefficients and the FPGA system clock cycle. Based on the FPGA, a system state variable generation module, a FIFO, a output module are used to obtain an output signal y[n]. the detailed steps of signal processing and displaying are given to obtain a display of a pinched hysteresis loop and a waveform display of time-domain. Simulation of high frequency memristor by setting polynomial coefficients can be obtained. Meanwhile, this is built based on FPGA, adopt digital circuit to simulates a reconfigurable general-purpose memristor, and experimental accuracy is enhanced.

Classes IPC  ?

• G06F 30/347 - Niveau physique , p. ex. positionnement ou routage
• H03K 19/177 - Circuits logiques, c.-à-d. ayant au moins deux entrées agissant sur une sortieCircuits d'inversion utilisant des éléments spécifiés utilisant des circuits logiques élémentaires comme composants disposés sous forme matricielle

Abrégé

A shorted-anode lateral insulated gate bipolar transistor and a manufacturing method therefor. The transistor comprises: a drift region (103) having a first conductivity type; a collector region (109) provided in the drift region (103) and having a second conductivity type; an anode region (110) having the first conductivity type; and an isolation structure (106), comprising a first structure provided between the collector region (109) and the anode region (110), and a second structure (1062) forming an included angle with the first structure (1061) and extending from the first structure (1061) to below the anode region. The first conductivity type is one of an N type and a P type, and the second conductivity type is the other one of the N type and the P type.

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices

Abrégé

A hierarchical proxy deployment method includes: performing information collection and information interaction in a hierarchical proxy deployment architecture to obtain bandwidths and latencies of all inter-node communication links; and selecting an optimal proxy deployment solution from all feasible proxy deployment solutions based on the bandwidths and latencies of all the inter-node communication links. According to the method, a hierarchical proxy deployment architecture is used. An optimal proxy deployment solution is formed by selecting the optimal location and the optimal number of proxies for deployment to meet the transmission performance requirement of network applications in 5G/B5G networks. Therefore, transmission performance requirements are satisfied by a proxy deployment with a minimized number of proxies, thereby reducing network overheads and resource waste.

Classes IPC  ?

• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 24/10 - Planification des comptes-rendus de mesures
• H04W 88/18 - Dispositifs de logistiqueDispositifs de gestion de réseaux

Abrégé

A self-detection circuit based on a power detector, comprising: a power detector, a coupler, a phased array transmitting channel 1, and a phased array transmitting channel 2. The power detector has two working modes, i.e., a phase detection mode and an amplitude detection mode. The problems of high complexity and large chip area of a self-detection circuit are solved.

Classes IPC  ?

• G01R 21/06 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance par mesure du courant et de la tension
• G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques
• G01R 25/00 - Dispositions pour procéder aux mesures de l'angle de phase entre une tension et un courant ou entre des tensions ou des courants

Abrégé

A random phase modulation method depending on a communication distance is provided. In the method, time synchronization is carried out by means of a transmitter and a receiver, a local random signal is generated, and an original signal to be sent is pre-coded according to a transmission delay and the generated local random signal, such that random phase modulation depending on a communication distance is realized, potential security brought about by positions of the transmitter and the receiver is fully utilized, a receiver at an expected distance position can receive a signal with a correct phase, and a receiver at another distance position receives a signal with a scrambled phase, thereby improving the secure communication capability of a wireless communication system in terms of the dimension of space.

Classes IPC  ?

• H04K 1/00 - Communications secrètes

Abrégé

The present invention provides a method for optimizing the energy efficiency of wireless sensor network based on the assistance of unmanned aerial vehicle, firstly, collecting the state of the WSN through current routing scheme, and inputting the state of the WSN into the decision network of the agent to determine a next hover node; Secondly, based on the location of the next hover node, generating a new routing scheme by the UAV, and sending each sensor node's routing to its corresponding sensor node through current routing by the UAV; Lastly, after all sensor nodes have received their routings respectively, all sensor nodes send their collected data to the hover node through their routings respectively, and the UAV flies to and hovers above the next hover node to collect data through the next hover node, thus the data collection of the whole WSN is completed. Considering that the amounts of data forwarded by the sensor nodes are different, the rates of energy consumptions of the sensor nodes are also different, an online determination of the data collection scheme is adopted. When the residual energies of the sensor nodes relatively have changed, the UAV needs to determine a next hover node and generate a new routing scheme according to current state of the WSN, thus the energy efficiency of wireless sensor network is optimized and the lifetime of the WSN is maximized.

Classes IPC  ?

• H04W 40/10 - Sélection d'itinéraire ou de voie de communication, p. ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base des ressources nodales sans fil sur la base de la puissance ou de l'énergie disponible
• H04W 40/20 - Sélection d'itinéraire ou de voie de communication, p. ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base de la position ou de la localisation géographique

Abrégé

A spatial position-dependent I/Q domain modulation method, dual domain modulation method and multiple access communication method are provided. The methods eliminate the dependence of physical layer secure communication on channel state information, and realize the function that a receiver at an expected position can communicate normally, while an eavesdropper at other positions cannot receive a signal or can only receive a wrong signal. The security capability of a wireless communication system is improved from the spatial dimension. The multiple access communication method can realize the distinguishing of multiple users according to precise spatial position points. Even if a plurality of users are located in the same sector in an angular domain, as long as the spatial positions of these users are different, the method can be used to perform multiple access communication, thereby further improving the spatial multiplexing rate of the system and increasing the system capacity.

Classes IPC  ?

• H04L 27/28 - Systèmes utilisant des codes à fréquences multiples à émission simultanée de fréquences différentes, chacune représentant un élément de code
• H04J 3/06 - Dispositions de synchronisation
• H04L 27/00 - Systèmes à porteuse modulée
• H04W 56/00 - Dispositions de synchronisation

Abrégé

The present invention belongs to the technical field of information security. Disclosed is a privacy-preserving neural network prediction system. The present invention comprises a client, a server and a third party. In an offline prediction stage of a neural network model, the client, the server and the third party complete sharing of model parameters by means of negotiation; and in an online prediction stage, the client sends a shared value of input data to the server, the client and the server jointly execute privacy-preserving neural network prediction using a secure computing protocol, the server shares an obtained prediction result to the client, and the client performs reconstruction to obtain a prediction result. In terms of communication, the present invention only requires one round of communication interaction, and reduces the communication overhead data volume of an existing solution, such that the communication efficiency of the present invention is significantly increased; and all computations in the present invention are based on rings instead of fields. In the present invention, a protocol for the offline stage is recustomized, such that not only is the efficiency of the offline stage increased, but only a lightweight secret sharing operation is required.

Classes IPC  ?

• H04L 9/08 - Répartition de clés
• G06N 3/08 - Méthodes d'apprentissage
• G06N 3/04 - Architecture, p. ex. topologie d'interconnexion
• G06N 5/04 - Modèles d’inférence ou de raisonnement
• G06F 7/58 - Générateurs de nombres aléatoires ou pseudo-aléatoires

Abrégé

A high-dimensional non-orthogonal transmission method is provided. In the method, signals of various users are mapped to form high-dimensional signals, and the high-dimensional signals are pre-coded, such that non-orthogonal transmission is realized in a higher dimension. Moreover, different users perform matched receiving on respective signals, and non-orthogonal transmission signals can be recovered merely by means of a receiver with a linear complexity. By means of the method, multi-user data non-orthogonal transmission can be realized without depending on conditions such as user pairing and collaboration, and various users do not need to perform iterative feedback, such that the detection complexity of non-orthogonal multi-user signals is significantly reduced.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

A phase domain modulation method dependent on a spatial position is provided. The method mainly includes the following steps: a transmitter and a receiver perform time synchronization to obtain a synchronization time; the transmitter performs a phase domain precoding operation on an original signal to obtain a phase domain pre-coded signal; the receiver receives the phase domain pre-coded signal, obtains a phase domain initial reception signal, and performs a phase domain matching operation on the phase domain initial reception signal to obtain an estimation of the original signal.

Classes IPC  ?

• H04L 27/18 - Systèmes à courant porteur à modulation de phase, c.-à-d. utilisant une manipulation à décalage de phase
• H04W 56/00 - Dispositions de synchronisation

Abrégé

A random transient power test signal generator based on three-dimensional memristive discrete map, which utilizes a three-dimensional parallel bi-memristor Logistic map module to generate two pseudo-random sequences, and based on the two pseudo-random sequences, uses two waveform output modules to generate a transient voltage signal and a transient current signal respectively, thus the random transient power testing signal is obtained.

Classes IPC  ?

• G01R 35/04 - Test ou étalonnage des appareils couverts par les autres groupes de la présente sous-classe des instruments pour mesurer l'intégrale dans le temps d'une puissance ou d'une intensité

Abrégé

The disclosure relates to mixed analog-digital circuits, and more specifically a low-noise millimeter-wave fractional-N frequency synthesizer. It overcomes quantization noise and fractional spurs caused by the limited dynamic range and nonlinearity of time error amplifiers (TA) in traditional phase-locked loop structures based on TA. In addition to the traditional structure, the synthesizer includes a coarse digital-to-time converter (CDTC), a fine digital-to-time converter (FDTC), and DTC non-linearity calibration circuits. By inserting the CDTC and FDTC before and after the TA, respectively, the variance of the input phase difference of the TA can be reduced, thereby improving the TA linearity and suppressing the quantization noise and spur generated by fractional-N operation. Furthermore, by using non-linearity calibration, the non-linearity of DTC and TA can be compensated to avoid large quantization noise and spur while the second order quantization noise reshaping is maintained. Furthermore, a high-gain TA can increase the resolution of the FDTC.

Classes IPC  ?

• H03L 7/197 - Synthèse de fréquence indirecte, c.-à-d. production d'une fréquence désirée parmi un certain nombre de fréquences prédéterminées en utilisant une boucle verrouillée en fréquence ou en phase en utilisant un diviseur de fréquence ou un compteur dans la boucle une différence de temps étant utilisée pour verrouiller la boucle, le compteur comptant entre des nombres variables dans le temps ou le diviseur de fréquence divisant par un facteur variable dans le temps, p. ex. pour obtenir une division de fréquence fractionnaire
• H03L 7/093 - Détails de la boucle verrouillée en phase concernant principalement l'agencement de détection de phase ou de fréquence, y compris le filtrage ou l'amplification de son signal de sortie utilisant des caractéristiques de filtrage ou d'amplification particulières dans la boucle

Abrégé

The present invention belongs to the technical field of 5G millimeter wave communications. Disclosed are a 5G dual-band upper frequency mixer with amplification and frequency mixing function switching, and a terminal. A first double-balanced active frequency mixer and a second double-balanced active frequency mixer are connected in series, two ends of the first double-balanced active frequency mixer are respectively connected to a first transformer and a second transformer, and two ends of the second double-balanced active frequency mixer are respectively connected to the second transformer and a third transformer; the first double-balanced active frequency mixer is provided with a first MOS transistor and a fourth transformer that is connected to the first MOS transistor; and the second double-balanced active frequency mixer is provided with a second MOS transistor and a fifth transformer that is connected to the second MOS transistor. In the present invention, two double-balanced active frequency mixers are connected in series, the later-stage frequency mixer can be switched to an amplifier function by means of controlling a bias voltage and an alternating-current signal switch, such that the whole frequency mixer can perform frequency mixing once or frequency mixing twice, so as to respectively correspond to radio-frequency signals of two bands, and thus dual-band upper frequency mixing can be realized.

Classes IPC  ?

• H03D 7/14 - Montages équilibrés
• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission

Abrégé

A multi-band, shared-aperture, circularly polarized phased array antenna relating to the field of antenna technology is disclosed. Specifically, two multi-band, shared-aperture, circularly polarized phased array antenna designs are disclosed. By integrating multiple circularly polarized endfire antennas with different operation bands into one aperture, a shared-aperture antenna array is achieved. The bandwidth and crossband port isolation of this antenna are enhanced, and the antenna also has the properties of miniaturization, feasibility, and ease of connection with circuits.

Classes IPC  ?

• H01Q 9/04 - Antennes résonnantes
• H01Q 3/36 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante faisant varier la phase par des moyens électriques avec des déphaseurs variables
• H01Q 21/00 - Systèmes ou réseaux d'antennes
• H01Q 21/06 - Réseaux d'unités d'antennes, de même polarisation, excitées individuellement et espacées entre elles

Abrégé

A non-high side power tube inverter circuit and an inverter module, which relate to electronic technology. The inverter circuit in the present invention is connected to become an annular structure by at least two inverter modules. The inverter module comprises: a pre-filter circuit, which has a signal input end and a signal output end, wherein the signal input end thereof serves as a modulation signal input end; a middle filter circuit, which has a direct-current power input end and an alternating-current power output coil, wherein a signal input end of the middle filter circuit is connected to the signal output end of the pre-filter circuit; and a signal output circuit, wherein a signal input end thereof is connected to the signal output end of the middle filter circuit, and a signal output end thereof serves as a modulation signal output end. In the present invention, the cost of an inverter can be significantly reduced, a controller algorithm can be simplified, and when the present invention is applied to a battery power vehicle, the requirements of the battery power vehicle for a battery management system can be reduced, such that the cost of the vehicle is reduced.

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont