Abstract

A transaction method includes: a production quantity acquisition step of acquiring a predicted production quantity of an agricultural product on a predetermined future date for each producer (P1); a demand acquisition step of acquiring a predicted demand for the agricultural product on the predetermined date for each purchaser (P2); and a matching step of performing matching between the predicted production quantity of each producer (P1) and the predicted demand of each purchaser (P2) on the predetermined date. The transaction method also includes a notification step of notifying a producer (P1) for which the matching has been established of a delivery destination desired by a purchaser (P2) for which the matching has been established, information of the agricultural product to be delivered, and the predetermined date.

IPC Classes  ?

• G06Q 30/0202 - Market predictions or forecasting for commercial activities
• G06Q 10/0834 - Choice of carriers
• G06Q 30/0201 - Market modellingMarket analysisCollecting market data
• G06Q 50/02 - AgricultureFishingForestryMining

Abstract

A sound system includes: a control system that generates a control signal for erasing noise from a signal of the noise in a place close to a head of a user who uses a seat; a silencing speaker system that is installed at the place close to the head of the user who uses the seat and includes M speaker units each emitting a sound based on the control signal; and an emission suppression unit including at least a sound absorbing material that easily absorbs only a sound having a frequency greater than or equal to a predetermined value and configured to make it difficult for the sound having the frequency greater than or equal to the predetermined value emitted from the silencing speaker units to be emitted to a place other than an ear of the user. The m-th silencing speaker unit is arranged so that a sound emitted from the m-th silencing speaker unit in the m-th silencing user direction is silenced at a place other than a place close to the head of the user who uses the seat due to coming around of a sound emitted from the m-th silencing speaker unit in a direction opposite to the m-th silencing user direction.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase

Abstract

A management device includes a storage configured to store map information on each area in which a robot that travels autonomously outdoors and indoors travels, and processing circuitry configured to collect external information containing disaster information, receive a current position of the robot or a travel route for the robot from a control device that controls the robot, based on the external information, sense occurrence of a disaster and a disaster occurrence area in which the disaster occurs, based on the current position of the robot or the travel route for the robot, specify the robot that is positioned in the disaster occurrence area or the robot that is predicted to be positioned in the disaster occurrence area, and based on the external information and the map information, determine an evacuation route to an evacuation site that is set previously.

IPC Classes  ?

• G05D 1/622 - Obstacle avoidance
• G05D 1/246 - Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM]

Abstract

A management device includes a memory configured to store map information for each area where a robot, which autonomously travels outdoors and indoors, travels, and processing circuitry configured to collect external information, receive a current position of the robot or a travel route of the robot from a control device controlling the robot, detect an occurrence of an event and an event occurrence area where the event occurs, based on the external information, identify the robot located in the event occurrence area or the robot predicted to be located in the event occurrence area based on the current position of the robot or the travel route of the robot, determine information about a new travel route for each robot located in the event occurrence area or each robot predicted to be located in the event occurrence area based on the external information and the map information, and recommend information.

IPC Classes  ?

• G05D 1/606 - Compensating for or utilising external environmental conditions, e.g. wind or water currents

Abstract

A test apparatus includes circuitry configured to acquire log information according to a first user operation; generate, for each screen of a target page of a software test, a page object defining one or more methods, based on the log information, each of the methods indicating a test procedure and a second user operation for an operation target that is to be performed on the screen of the target page; generate, based on the methods defined by the page object, a manual of the software test, the manual including (i) operation content information indicating a content of the second user operation, (ii) the test procedure, and (iii) an image indicating the screen of the target page, the image being used for identifying the operation target as the second user operation; and output data of the manual.

IPC Classes  ?

• G06F 11/3668 - Testing of software

Abstract

The transmission apparatus intermittently transmits a physical frame of a transmitted signal. The receiving apparatus includes a correlation calculation unit and a determination unit. The correlation calculation unit calculates a correlation between the received signal and each of the correlation sequences subjected to Doppler shift of a plurality of types of shift amounts. The determination unit determines that the physical frame has been received in a case where any one of the calculation results obtained by the correlation calculation unit exceeds the threshold.

IPC Classes  ?

• H04B 1/7073 - Synchronisation aspects
• H04L 27/22 - Demodulator circuitsReceiver circuits

Abstract

A communication system that includes a plurality of cloud resources, and a plurality of communication devices provided on a path for using any one of the plurality of cloud resources, the communication system including: a cloud controller that collects cloud information regarding the plurality of cloud resources from each of the plurality of cloud resources and performs setting change of the plurality of cloud resources; a network controller that collects NW information regarding the plurality of communication devices and a network formed by the plurality of communication devices from each of the plurality of communication devices and gives an instruction for path switching in the plurality of communication devices; and an integrated controller that collects the cloud information from the cloud controller, collects the NW information from the network controller, and gives at least one of an instruction for setting change of the cloud resources to the cloud controller or an instruction for path switching to the network controller on the basis of the cloud information and the NW information collected.

IPC Classes  ?

• H04L 41/0823 - Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
• H04L 45/42 - Centralised routing

Abstract

In order to improve utilization efficiency of a wireless base station having high communication quality and smooth a difference in communication quality between wireless terminals, in a wireless communication method, a wireless base station performs setting processing of setting a threshold for determining a congestion degree of the wireless base station on a basis of an actual value of past communication, determination processing of determining a congestion degree of the wireless base station using the threshold, and change processing of changing a connection condition of the wireless base station on a basis of a congestion degree of the wireless base station.

IPC Classes  ?

• H04W 24/08 - Testing using real traffic

Abstract

Provided is a highly-sensitive image-capture element and an image capture device that can be simply manufactured, have little polarization dependency, and have micro-spectroscopic elements capable of separating incident light into three wavelength ranges integrated facing a pixel array. An image capture element has a transparent layer having a low refractive index made of SiO2 or the like and a plurality of micro-lenses laminated on a pixel array in which pixels each including a photoelectric conversion element are disposed in an array. Inside the transparent layer having the low refractive index, micro-spectroscopic elements composed of a plurality of microstructures having constant thickness (length in a direction perpendicular to the pixel array) formed of a material such as SiN having a higher refractive index than that of the transparent layer is embedded.

IPC Classes  ?

• H10F 39/18 - Complementary metal-oxide-semiconductor [CMOS] image sensorsPhotodiode array image sensors
• H10F 39/00 - Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group , e.g. radiation detectors comprising photodiode arrays

Abstract

The present disclosure relates to a wireless communication system suitable for stably securing a transmission capability in a multiplex transmission scheme using a plurality of channels, and an object thereof is to secure a desired transmission capacity even though some channels become unusable. The wireless communication device and the communication partner device establish communication by using a plurality of channels in a multiplexed manner, and each of the wireless communication device and the communication partner device has a function responding to a change of a modulation scheme used for wireless communication. The wireless communication device detects an occurrence of an unusable state for each of the plurality of channels. When the unusable state is detected, the working modulation scheme is changed to another modulation scheme that generates a larger transmission capacity to secure a desired transmission capacity in a usable channel.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04W 76/10 - Connection setup

Abstract

A power topology estimation apparatus according to an embodiment estimates connection relationships between one or more power sources and one or more load devices. The power topology estimation apparatus includes: a reception unit configured to receive, for each of the one or more power sources, a measured current value obtained by measuring a value of a current from the power source; a current estimation unit configured to calculate, for each of the one or more load devices, an estimated current value obtained by estimating a value of a current to the load device from a load of the load device; and a topology estimation unit configured to estimate the connection relationships between the power sources and the load devices based on the measured current value for the one or more power sources and the estimated current value for the one or more load devices.

IPC Classes  ?

• G01R 31/58 - Testing of lines, cables or conductors
• G01R 19/25 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
• G01R 31/40 - Testing power supplies

Abstract

Provided is an optical device having a long lifetime and high reliability. An optical device according to one embodiment comprises at least one Mach-Zehnder (MZ) modulator and a redundant semiconductor optical amplifier (SOA). The redundant SOA is connected to at least one MZ modulator via a 2-input 2-output coupler. The redundant SOA includes two SOAs arranged in parallel, and the two SOAs are arranged in two waveguides connected to the 2-input 2-output coupler, respectively. The redundant SOA is configured to switch the two SOAs to amplify light modulated by the at least one MZ modulator or light obtained before modulation.

IPC Classes  ?

• G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference
• G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
• H01S 5/026 - Monolithically integrated components, e.g. waveguides, monitoring photo-detectors or drivers
• H01S 5/50 - Amplifier structures not provided for in groups

Abstract

A field effect transistor of an exemplary embodiment of the present invention includes, on a plane thereof, in order, a source electrode, a first gate electrode, and a drain electrode, and includes in a direction perpendicular to the plane, in order, a first barrier layer, a second gate electrode disposed in the first barrier layer, a first channel layer made of a semiconductor, a second barrier layer which is made of a semiconductor having an energy gap larger than that of the first channel layer and includes an δ-doped layer, a second channel layer made of a semiconductor having an energy gap smaller than that of the second barrier layer, a third barrier layer, and the first gate electrode.

IPC Classes  ?

• H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]

Abstract

A data transfer controller for controlling transfer of a plurality of data items from a first device to a plurality of second devices includes a processor configured to transfer at least one data item of a plurality of data items that is to be transferred from the first device to the plurality of second devices, to at least one first memory, upon occurrence of a condition in which an hourly transfer volume of the plurality of data items transferred from the first device to a switch exceeds a bandwidth between the first device and the switch, and to cause the plurality of second devices to acquire the at least one data item that is stored in the at least one first memory.

IPC Classes  ?

• G06F 13/16 - Handling requests for interconnection or transfer for access to memory bus

Abstract

A topological quantum operation system according to the present disclosure includes: a waveguide in which a quantum bit is guided; an anyon generation unit that generates a quantum bit; a quantum gate operation unit that executes a braiding operation on at least a part of non-abelian anyons constituting the quantum bit; and a measurement unit that measures the quantum bit on which the braiding operation is performed, in which the quantum gate operation unit further includes: a plurality of waveguides having different branched lengths; and a switch that guides the non-abelian anyons included in the quantum bit to each of the plurality of waveguides having different branched lengths, and executes the quantum gate operation by generating a delay amount in at least the part of the non-abelian anyons.

IPC Classes  ?

• G06N 10/20 - Models of quantum computing, e.g. quantum circuits or universal quantum computers

Abstract

A data transfer controller includes a receiver which receives, from a transmitting device, a message including a destination identifying a receiving device which acquires data from a storage area and processes the acquired data, and an address indicating a storage destination of the data to be processed by the receiving device, a transmission queue which retains the message received by the receiver, a copy processing device which instructs the transmitting device to copy the data retained in the transmitting device to a memory, and rewrites an address included in the message retained in the transmission queue to an address indicating a storage location of the data in the memory, based on copying of the data from the transmitting device to the memory, and a transmitter configured to transmit the message retained at a head of the transmission queue to the receiving device indicated by the destination included in the message.

IPC Classes  ?

• G06F 9/54 - Interprogram communication

Abstract

Opposing connection end faces of optical fibers (1a and 1b) and opposing connection end faces of ferrules (20a and 20b) are inclined with respect to a direction orthogonal to a longitudinal direction of the optical fibers (1a and 1b). Opposing connection end faces of magnetic structures (21a and 21b) are inclined with respect to the direction orthogonal to the longitudinal direction of the optical fibers (1a and 1b), a magnetic force generated between the magnetic structures (21a and 21b) acts in a direction orthogonal to the connection end faces of the optical fibers (1a and 1b) and the connection end faces of the ferrules (20a and 20b).

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

In the inspection pattern T for inspecting a processing state of a mesa (monitoring a fabrication accuracy against the expected pattern of a mesa) used for an actual element M, the actual element M includes a mesa formed by etching a substrate, and an electrode formed on the mesa, the inspection pattern T includes a mesa formed by etching the substrate, and a thin film that is formed at least on an upper surface of the inspection pattern portion T and has a thickness smaller than the thickness of the electrode, an etching state of the mesa is evaluated on the basis of a difference between the shape of the inspection pattern portion T and the shape of the thin film, and a lateral etching amount at the time of etching is quantitatively and accurately evaluated with a non-destructive inspection.

IPC Classes  ?

• H01L 21/66 - Testing or measuring during manufacture or treatment
• H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components

Abstract

A switch control apparatus includes a switch control unit that connects a plurality of optical power feeding devices and a plurality of optical power reception devices that convert light received from the plurality of optical power feeding devices into power and store the power, and controls an optical power supply switch that switches an emission destination of light emitted from the optical power feeding devices, a power storage data reception unit that receives data of a power storage amount stored by the plurality of optical power reception devices, and a distribution determination unit that determines a distribution of light emitted from the plurality of optical power feeding devices to the plurality of optical power reception devices based on data of the power storage amount received by the power storage data reception unit, in which the switch control unit controls the optical power supply switch based on the distribution determined by the distribution determination unit.

IPC Classes  ?

• H02J 50/30 - Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
• H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices

Abstract

Provided is a breaker including a breaking unit for breaking a current in two directions; and a housing including a plurality of slots in which the breaking unit is inserted, and a circuit wired in advance to be connected between different points according to a slot in which the breaking unit is inserted.

IPC Classes  ?

• H01H 71/02 - HousingsCasingsBasesMountings

Abstract

A learning apparatus for training a machine learning model that outputs information to be used for estimating a classification probability for each class, the learning apparatus including a classification estimation process observation part that generates an estimation process feature vector based on data of an estimation process in classification of data, and a training part that trains the machine learning model by having a feature vector list obtained by adding at least a second estimation process feature vector obtained from data different from classification object data to a first estimation process feature vector obtained from the classification object data as input to the machine learning model, and by using a classification ratio vector list in which at least a second classification ratio vector different from a first classification ratio vector, being a correct answer to the classification object data, has been added to the first classification ratio vector as a correct answer to the input to the machine learning model.

IPC Classes  ?

• G06N 20/00 - Machine learning
• G06F 18/2415 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on parametric or probabilistic models, e.g. based on likelihood ratio or false acceptance rate versus a false rejection rate

Abstract

An embodiment is a method for controlling a computer system including a plurality of calculators and a host, each of the plurality of calculators having a trace buffer, the method including triggering by detection of a predetermined event from input data to record a detection time of the event acquired for each type of the input data in the trace buffer, determining, by the host or the calculator, the type of the input data to which the detection time of the event recorded in the trace buffer belongs, and recording, by the host or the calculator, according to a determination result, a latest detection time of the event among the detection times of the event belonging to the same type of the input data, and erases detection times of the event other than the latest detection time of the event.

IPC Classes  ?

• G06F 3/06 - Digital input from, or digital output to, record carriers

Abstract

An optical communication device includes: a first optical switch that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to another optical transmission line; a second optical switch that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to another optical transmission line; and a multicast transfer unit configured to perform multicast transfer of an optical signal transmitted from a first device connected to the first optical switch to one or more second devices connected to the second optical switch.

IPC Classes  ?

• H04B 10/27 - Arrangements for networking
• H04J 14/02 - Wavelength-division multiplex systems

Abstract

A microorganism observation device capable of continuously culturing and observing microorganisms is provided. A microorganism observation device includes: a main body including a vessel having a hollow structure and a partition wall provided in the vessel and partitioning an internal space of the vessel into compartments, the vessel having one or more inlets and an outlet each communicating the internal space to an external space, the vessel including a light-transmitting portion having light-transmitting properties at positions of the compartments, and the wall allowing transfer of liquid between the compartments and the inlet and between the compartments and the outlet; a medium filling the compartments; and a plurality of types of microorganisms located in the internal space, in which at least one of the compartments includes two or more of the plurality of types of microorganisms and is free from one or more of the plurality of types of microorganisms.

IPC Classes  ?

• C12M 1/00 - Apparatus for enzymology or microbiology
• C12N 1/04 - Preserving or maintaining viable microorganisms

Abstract

A visual object is visually changed by a magnitude of visual change of the visual object according to a manipulation based on a motion of a body part on the basis of manipulation information indicating the manipulation and information indicating a relationship between the magnitude of visual change and a manipulation amount based on the manipulation, and information for presenting the visually changed visual object is output. Here, this relationship is defined at least according to an index representing a degree of a pseudo haptic sense to be presented.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• G06F 3/04845 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
• G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A region detection device (1) according to the present disclosure includes a line segment detection unit (32) that detects a line segment from a captured image including an image of a target object having a linear band shape, a main line segment extraction unit (33) that extracts a main line segment (SL) that is a line segment having a length equal to or more than a predetermined value; a correction unit (34) that generates, as a corrected image, a rotated image obtained by rotating the captured image such that the main line segment (SL) is perpendicular or parallel to an arrangement direction of pixels in the captured image, and a region detection unit (35) that detects a target object region indicating the image of the target object from the corrected image.

IPC Classes  ?

• G06V 10/98 - Detection or correction of errors, e.g. by rescanning the pattern or by human interventionEvaluation of the quality of the acquired patterns
• G06V 10/24 - Aligning, centring, orientation detection or correction of the image
• G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components

Abstract

The present disclosure provides a method for identifying the neutron beam type, the method including: a step for exposing an algae culture to a neutron beam; a step for measuring the expression level (A) of a marker gene in the algae culture exposed to the neutron beam; and a step for identifying the neutron beam type from the measured value of the expression level (A) on the basis of a predetermined relationship between the expression level change of the marker gene and the neutron beam type to which the algae is exposed.

IPC Classes  ?

• G01T 3/00 - Measuring neutron radiation
• C12N 15/29 - Genes encoding plant proteins, e.g. thaumatin
• C12Q 1/686 - Polymerase chain reaction [PCR]
• C12Q 1/6851 - Quantitative amplification

Abstract

A radio relay system according to one embodiment of the present invention relays a radio wave radiated by a radio communication device to a moving radio terminal, and includes: a plurality of radio wave direction change units that each change the direction of travel of a radio wave incident from the radio communication device so that the radio wave is emitted in another direction; and a control unit that controls the direction of the radio wave emitted by each of the radio wave direction change units. The control unit includes: an estimation unit that estimates a position to which the radio terminal is to move after elapse of a predetermined period of time; and a sequential allocation unit that uses the position of the radio terminal estimated by the estimation unit to determine an allocation in which each of the radio wave direction change units sequentially emits a radio wave toward the radio terminal each time the predetermined period of time elapses.

IPC Classes  ?

• H04W 16/26 - Cell enhancers, e.g. for tunnels or building shadow
• H04W 16/28 - Cell structures using beam steering
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management

Abstract

A wireless relay system according to one embodiment comprises: a plurality of radio wave direction changing units that each change the direction of travel of radio waves incident from a wireless communication device so as to emit the radio waves in different directions; and a control unit that controls the direction of the radio waves emitted by each of the radio wave direction changing units. The control unit includes: an estimation unit that estimates the position to which a wireless terminal will move after a predetermined time elapses; an angle calculation unit that calculates, for each of the radio wave direction changing units, the angle between the direction in which the radio wave is currently being emitted and the direction in which the radio wave will be emitted when emitted toward the wireless terminal that has moved after the predetermined time has elapsed, the angle being calculated on the basis of the estimated position of the wireless terminal; a selection unit that selects, from among the plurality of radio wave direction changing units, the radio wave direction changing unit for which the angle calculated by the angle calculation unit is smallest; and an assignment unit that assigns the selected radio wave direction changing unit to emit radio waves toward the wireless terminal after the predetermined time has elapsed.

IPC Classes  ?

• H04B 7/14 - Relay systems
• H04W 16/26 - Cell enhancers, e.g. for tunnels or building shadow

Abstract

In order to improve the prediction accuracy of wireless quality in a wireless quality prediction system for predicting the wireless communication quality of a communication terminal, this wireless quality prediction system comprises: an acquisition unit that acquires position information indicating the position of a communication terminal and information relating to a base station to which the communication terminal is connected; and a prediction unit that predicts the wireless quality of the communication terminal using a learning device corresponding to the information relating to the base station among a plurality of learning devices trained in advance to predict the wireless quality of the communication terminal on the basis of the position information.

IPC Classes  ?

• H04W 24/08 - Testing using real traffic

Abstract

This training device is provided with a first control unit for training a neural network: which is included in a speech conversion model being a mathematical model for converting a conversion source feature quantity sequence being a sequence of speech feature quantities of a speech signal of a conversion source into a target speech feature quantity sequence being a sequence of speech feature quantities of a target speech signal being a speech signal belonging to a targeted attribute for an attribute related to a sound; to which at least a speech feature quantity sequence being a sequence of speech feature quantities obtained from the speech signal, and a phoneme feature quantity sequence obtained from the speech feature quantity sequence are inputted; which performs estimation based on the inputted sequences; and which estimates the gradient at a current point of a path leading to a nearest stationary point being a stationary point of a target feature quantity distribution function that is a function on a vector space representing the speech feature quantity sequence and is a probability density function representing the distribution of the target speech feature quantity sequence, being a point in the vector space, and being a stationary point nearest to the current point that is a point in the vector space representing the inputted speech feature quantity sequence.

IPC Classes  ?

• G10L 21/007 - Changing voice quality, e.g. pitch or formants characterised by the process used

Abstract

The present invention relates to an acoustic synthesis system that receives an acoustic signal together with a video signal, reproduces a clock using the video signal, resamples the acoustic signal from the clock and a local clock, and uses the resampled acoustic signal for synthesis with other acoustic signals.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• G10K 15/02 - Synthesis of acoustic waves
• H04N 21/439 - Processing of audio elementary streams
• H04N 21/8547 - Content authoring involving timestamps for synchronizing content
• H04N 21/2368 - Multiplexing of audio and video streams

Abstract

The present disclosure is a system comprising: an up-sampling unit for upsampling sampling data; and a down-sampling unit for downsampling upsampled data upsampled by the up-sampling unit. The up-sampling unit and the down-sampling unit are connected over a communication network.

IPC Classes  ?

• G10K 15/02 - Synthesis of acoustic waves

Abstract

One aspect of the present invention is an information processing device that comprises: an acquisition unit that acquires an encoded image obtained by optically compressing a spectral image; and a reconstruction unit that produces a reconstructed image from the encoded image by computation. The reconstruction unit uses an alternating direction method of multipliers to solve a reconstruction problem as a convex quadratic function minimization problem, expressing an observation matrix for the alternating direction method of multipliers as a minimization problem that uses a zero padding matrix, a fast Fourier transform matrix, an inverse fast Fourier transform matrix, a color reduction matrix, an observation model, a function, and a variable that is expressed using an extended Lagrangian function, switching and thereby updating the variable, and applying a Woodbury inverse matrix formula to each element of the matrix used during the updating to reduce the fast Fourier transform matrix and the inverse fast Fourier transform matrix.

IPC Classes  ?

• H04N 23/84 - Camera processing pipelinesComponents thereof for processing colour signals
• G06T 1/00 - General purpose image data processing

Abstract

According to the present invention, a control unit executes bit likelihood estimation processing that estimates a logarithmic likelihood ratio calculated from the likelihood that a kth (k being an integer from 1 to m, inclusive) bit of an (n+1)th symbol of a transmission signal is a prescribed bit using a path metric for each candidate for the (n+1)th symbol of the transmission signal obtained by path metric estimation processing and decision results for the bits of the nth symbol from forward computation that is computation in the order from the nth to the (n+1)th of the transmission signal but not using a path metric other than the path metric for each candidate for the (n+1)th symbol of the transmission signal. The control unit corrects the estimated logarithmic likelihood ratio on the basis of decision results for the bits of the nth symbol from backward computation that is computation in the order from the (n+1)th to the nth of the transmission signal.

IPC Classes  ?

• H03M 13/41 - Sequence estimation, i.e using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors

Abstract

Event processing units (20A) to (20D) of this event processing system (100) process an event by using a shared resource. Here, each of the event processing units (20A) to (20D) determines whether or not the event processing unit itself is in a congested state according to the number of unprocessed events allocated thereto, and when the event processing unit is determined to be in a congested state, the event processing unit notifies an incoming side control unit (10) of the number of events processed between the present and a prescribed time before, as a performance value thereof. The incoming side control unit (10) determines a regulation value for the number of events to be accepted from now on, on the basis of the performance values notified from each of the event processing units (20A) to (20D).

IPC Classes  ?

• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
• G06F 9/48 - Program initiatingProgram switching, e.g. by interrupt

Abstract

This compression test instrument (100) for an optical cable (20) having two opposite side surfaces (20a, 20b) comprises: a fixed flat plate (1) on which the optical cable (20) is placed; a pair of support members (4, 5) that support the two side surfaces (20a, 20b) while the optical cable (20) is placed on the fixed flat plate (1); and a movable flat plate (2) that applies a load on the optical cable (20) in the direction of the fixed flat plate (1).

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
• G01N 3/00 - Investigating strength properties of solid materials by application of mechanical stress

Abstract

Provided is a communication control method executed by a distributed antenna system that controls coherent transmission between a terminal and a plurality of distributed antennas that cooperatively execute coherent transmission, the terminal executing communication with a signal processing device or an upper-level signal processing device via the plurality of distributed antennas. The communication control method includes a step for estimating, for each of the plurality of distributed antennas: a propagation delay difference, at the terminal, for propagation between the signal processing device or the upper-level signal processing device and the terminal in accordance with a propagation delay between the signal processing device or the upper-level signal processing device and the terminal; or a propagation delay difference, at the terminal, for propagation between the plurality of distributed antennas and the terminal in accordance with a propagation delay between the signal processing device or the upper-level signal processing device and each of the plurality of distributed antennas, and a propagation delay between each of the plurality of distributed antennas and the terminal. The communication control method further includes a step for controlling a transmission time for each of the distributed antennas such that the propagation delay difference estimated for each of the distributed antennas is within an allowable delay difference.

IPC Classes  ?

• H04B 7/024 - Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

Abstract

This estimation device comprises: a first distance information generation unit that, for each combination of a first transmission point and a first reception point, generates information about a first distance between the first transmission point and the first reception point on the basis of coordinate information for the first transmission point and coordinate information for the first reception point; a first propagation information generation unit that, for each combination, generates first diffraction information and first reflection information for a first radio wave propagating from the first transmission point to the first reception point, on the basis of first terrain information for a first area where the first transmission point and the first reception point are arranged, the coordinate information for the first transmission point, and the coordinate information for the first reception point; a training unit that generates a trained model using the first distance information, the first diffraction information, and the first reflection information as first explanatory variables for each combination, and using the measured value of the propagation loss of the first radio wave as a first objective variable for each combination; and an estimation unit that inputs second distance information, second diffraction information, and second reflection information as second explanatory variables to the trained model, and acquires from the trained model an estimated value of the propagation loss of a second radio wave as a second objective variable.

IPC Classes  ?

• H04B 17/391 - Modelling the propagation channel

Abstract

This communication device comprises: a collection unit that collects the frame discard rate for each user from each first package having a home device for each user as a subordinate; and a determination unit that determines that the power supply of a second package for transferring a frame is to be turned on under a power-on condition that the discard rate exceeds a first threshold value for one or more users and that there are a plurality of users for whom the frame is discarded, and determines that the power supply of the second package is to be turned off under a power-off condition that the discard rate is equal to or less than the first threshold value for all users or there are one or fewer users for whom the frame is discarded.

IPC Classes  ?

• H04L 12/44 - Star or tree networks
• H04L 43/0829 - Packet loss

Abstract

An optical communication device includes: a plurality of first distribution units that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of first devices to any of the optical transmission lines; a plurality of second distribution units that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to any of second devices; and a transfer unit configured to transfer the optical signal transmitted from the first device connected to any of the plurality of first distribution units to any of the plurality of second distribution units connected to the specific second device.

IPC Classes  ?

• H04B 10/27 - Arrangements for networking
• H04J 14/02 - Wavelength-division multiplex systems

Abstract

An object of the present disclosure is to predict an occurrence probability of a violation with high accuracy. An object of the present disclosure is to predict an occurrence probability of a violation with high accuracy. Therefore, content of the present disclosure is a violation prediction apparatus that predicts an occurrence probability of a violation, and is configured to: evaluate conversation data that includes conversation partner information for identifying a partner of a conversation and indicates a conversation content and a conversation situation, thereby obtaining a conversation content evaluation value and a conversation situation evaluation value; evaluate a relationship with the partner of the conversation based on relationship data that indicates a human relationship with a target user and on the conversation partner information, thereby obtaining a relationship evaluation value; calculate a social interaction effect based on the conversation content evaluation value, the conversation situation evaluation value, and the relationship evaluation value; calculate a time attenuation value of the social interaction effect based on a time attenuation function; and calculate an occurrence probability of a violation.

IPC Classes  ?

• G06F 40/284 - Lexical analysis, e.g. tokenisation or collocates

Abstract

An object of the present invention is to provide an optical fiber sensing device and an optical fiber sensing method that enable accurate measurement even under the condition that strain or temperature change of a measurement target is significant. An object of the present invention is to provide an optical fiber sensing device and an optical fiber sensing method that enable accurate measurement even under the condition that strain or temperature change of a measurement target is significant. The present invention is an optical fiber sensing device using OFDR, including an analysis circuit that executes obtaining a change rate of a spectral by time-differentiating a measured spectrum shift, detecting a discontinuity point of the spectrum shift from the change rate, calculating a predicted value of the change rate for the discontinuity point, estimating an estimated value of the change rate at the discontinuity point by applying a Kalman filter to the change rate at the discontinuity point and the predicted value at the discontinuity point, and acquiring a corrected spectrum shift by time-integrating the change rate other than the discontinuity point and the estimated value estimated at the discontinuity point.

IPC Classes  ?

• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

A wireless relay system according to an embodiment executes processing for estimating a position to which a wireless terminal moves after a lapse of a predetermined time, calculating respective candidates for phase rotation patterns of reflection elements each capable of reflecting a radio wave toward the wireless terminal that has moved to the estimated position, calculating received power at the estimated position of the wireless terminal for each of the calculated candidates for the phase rotation patterns of the reflection elements, calculating the number of reflection elements that need to switch a phase rotation amount if switching from the current respective phase rotation patterns of the reflection elements to the calculated respective candidates for the phase rotation patterns of the reflection elements has been done, selecting the respective phase rotation patterns of the reflection elements in which the calculated received power is equal to or more than a predetermined value and the number of reflection elements that need to switch the calculated phase rotation amount becomes minimum, and switching the respective phase rotation patterns of the reflection elements to the selected phase rotation patterns.

IPC Classes  ?

• H04W 16/26 - Cell enhancers, e.g. for tunnels or building shadow
• H04B 7/145 - Passive relay systems
• H04W 16/28 - Cell structures using beam steering
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management

Abstract

A test system 5 includes: a first optical splitter P1 for branching an optical signal of a first path L21 to a subscriber device 4 in a second loop network L2 connected to a first loop network L1; a second optical splitter P2 for branching an optical signal of a second path to the subscriber device 4 in the second loop network L2; a first optical sensor 13a provided at a branch destination of the first optical splitter P1, for detecting an optical signal in the first path L21; a second optical sensor 13b provided at a branch destination of the second optical splitter P2, for detecting an optical signal in the second path L22; and a test device 1. When a failure in the second loop network L2 is detected, the test device 1 determines the occurrence of a failure in a path corresponding to the sensor that has detected the light among the first optical sensor 13a and the second optical sensor 13b.

IPC Classes  ?

• H04L 12/42 - Loop networks
• H04B 10/071 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
• H04L 41/06 - Management of faults, events, alarms or notifications

Abstract

An information processing device according to the present invention includes a processing unit that, in constructing of a search tree for solving a directed graph search problem with a moving body position constraint, sets a search priority in each directed graph, and also performs pruning of nodes and edges of a search tree that violate the constraint, on the basis of the search priority set in each directed graph, thereby constructing the search tree.

IPC Classes  ?

• G06N 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

This calculation device receives an input of a graph which is a scale-free graph and in which a visiting order is determined by the values of degrees of vertexes. Then, the calculation device visits the vertexes of the graph and performs a BFS exploration in accordance with the above visiting order. The calculation device: reads out by using an indptr array obtained by compressing an adjacency matrix of the above graph by using a compressed sparse row format, a first value indicating the total sum of degrees of visited vertexes at the start of the BFS exploration at a level in which the exploration has ended, and a second value indicating the total sum of degrees of visited vertexes at the end of the exploration at said level; and outputs the difference between the second value and the first value as an approximate value of the total sum of degrees of the frontier vertexes at said level.

IPC Classes  ?

• G06F 18/2323 - Non-hierarchical techniques based on graph theory, e.g. minimum spanning trees [MST] or graph cuts

Abstract

One aspect of the present invention is an information processing device comprising: an acquisition unit that acquires an encoded image in which a spectral image is optically compressed and captured; and a reconstruction unit that reconstructs a reconstruction image from the encoded image by calculation. The reconstruction unit solves convex quadratic function optimization when performing reconfiguration, and approximates a gradient direction update by a steepest descent method in the convex quadratic function optimization so as to approximately cancel a fast Fourier matrix and an inverse fast Fourier transform matrix using the approximate expression of a zero padding matrix.

IPC Classes  ?

• H04N 23/84 - Camera processing pipelinesComponents thereof for processing colour signals
• G06T 1/00 - General purpose image data processing

Abstract

The present invention provides an extension station having a communication function among a signal processing function and the communication function provided in a radio communication device. The extension station includes: one or more light sources for outputting light of a predetermined wavelength; a plurality of conversion units for generating modulated signal light by modulating the light of the predetermined wavelength output from the one or more light sources; one or more polarization adjustment units for adjusting the polarization of the modulated signal light generated by at least one of the plurality of conversion units; and a multiplexing unit for multiplexing a plurality of optical signals including the modulated signal light of which the polarization has been adjusted by the polarization adjustment units and outputting the multiplexed optical signals to an aggregation station having a signal processing function.　

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• H04J 14/06 - Polarisation multiplex systems

Abstract

This wavelength conversion device (500) is provided with: a wavelength conversion element (512) provided with a waveguide array (511); a first optical system (533) for causing the signal light and the excitation light to enter a waveguide (511a) in the waveguide array (511) and causing the monitoring light to enter a waveguide (511b) adjacent to the waveguide (511a); a second optical system (534) for demultiplexing the emitted light from the waveguides (511a, 511b) into signal light, excitation light, and monitoring light; a polarizer (525) having a transmission axis orthogonal to the input polarization plane angle of the monitoring light; a wave detector (526) for receiving the monitoring light; and a measurement unit (532) for measuring the power of the monitoring light on the basis of the output of the wave detector (526).

IPC Classes  ?

• G02F 1/377 - Non-linear optics for second-harmonic generation in an optical waveguide structure

Abstract

This communication control method is executed by a distributed antenna system for controlling coherent transmission between a terminal that executes communication with a signal processing device or a higher-level signal processing device via a combination of distributed antennas among a plurality of distributed antennas that cooperatively execute coherent transmission, and the combination of distributed antennas. The communication control method comprises: a step for estimating, for each distributed antenna, a propagation delay difference in the terminal between the signal processing device or the higher-level signal processing device and the terminal in accordance with a propagation delay between the signal processing device or the higher-level signal processing device and the terminal, or a propagation delay difference in the terminal between the distributed antenna and the terminal in accordance with a propagation delay between the signal processing device or the higher-level signal processing device and the distributed antenna and a propagation delay between the distributed antenna and the terminal; and a step for selecting, from among the plurality of distributed antennas, a combination of distributed antennas in which the propagation delay difference estimated for each distributed antenna is within an allowable delay difference.

IPC Classes  ?

• H04B 7/024 - Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

Abstract

This communication device is provided with a collection unit that collects, for each user, the frame discard rate from each first package that manages an in-house device for each user, and a determination unit. The determination unit determines to turn on the power of a second package that transfers frames when a power-on condition is satisfied, the condition being that the discard rate exceeds a first threshold value in one or more users, and that the number of users in which frame discards have occurred is two or more. The determination unit determines to turn off the power of the second package when a power-off condition is satisfied, the condition being that the discard rate is equal to or less than the first threshold value for all users, or that the number of users in which frame discards occur has decreased to one or fewer.

IPC Classes  ?

• H04L 12/44 - Star or tree networks
• H04L 43/0829 - Packet loss

Abstract

In an assignment device (10), an acquisition unit (15a) acquires a task questionnaire answer (14a) for a questionnaire regarding the similarity of the content of each task to be processed by an employee, and a preference questionnaire answer (14b) for a questionnaire regarding the employee's preferences for the tasks. A generation unit (15b) uses the acquired task questionnaire answer (14a) for the questionnaire regarding the similarity of the content of each task to generate a task map representing similarity between the tasks. A synthesis unit (15c) uses the acquired preference questionnaire answer (14b) for the questionnaire regarding the employee's preferences for the tasks to synthesize, on the task map, a preference vector representing the preference tendency of each employee. An assignment unit (15e) assigns, to each employee, the tasks of the task map in order of proximity between the tasks and the preference vector.

IPC Classes  ?

• G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations

Abstract

In this information processing system provided with a storage device and a processing device, the storage device is provided with: a storage unit that stores a data structure for holding data in a randomized physical address; a conversion unit that converts a key value for data search into the physical address in the data structure; and a transfer unit that transfers the data read from the storage unit to the processing device.

IPC Classes  ?

• G06F 21/55 - Detecting local intrusion or implementing counter-measures

Abstract

Provided is a storage device in an information processing system provided with the storage device and a processing device, wherein the storage device comprises: a storage unit for storing a tree structure in which data is held on a path corresponding to a randomized address value; a conversion unit for converting a data-search key value to the address value; and a transfer unit for transferring data on the path corresponding to the address value, said data being read from the storage unit, to the processing device.

IPC Classes  ?

• G06F 21/55 - Detecting local intrusion or implementing counter-measures

Abstract

A transmission apparatus repeatedly inserts reference signal sequences into a transmission signal sequence at different timings, and converts the transmission signal sequence, into which the reference signal sequences are inserted, into an optical signal. The reception apparatus includes a detection unit, a waveform equalization unit, and a signal quality measurement unit. The detection unit receives the optical signal transmitted through an optical transmission line, and converts the received optical signal into a reception signal of an electrical signal. The waveform equalization unit performs waveform equalization on the reception signal converted into the electrical signal. The signal quality calculation unit extracts a reception signal sequence set in each section corresponding to the reference signal sequence from the received signal on which waveform equalization performed. For each combination of different sections, the signal quality calculation unit calculates a mean square error between the mean of the reception signal sequences set in the sections included in a combination and the reference signal sequence, and calculates a signal-to-noise ratio and a signal-to-distortion ratio of the reception signal using the mean square error calculated for each combination.

IPC Classes  ?

• H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal

Abstract

An analysis function providing method executed by an analysis function providing device includes first analyzing a virtual machine of a script engine, and acquiring a hook point that is a part where an analysis code is inserted by applying a hook, and a virtual program counter that is a variable indicating an instruction of the virtual machine to be executed next, second analyzing an instruction set architecture that is a system of instructions of the virtual machine and acquiring a branch virtual machine instruction that is a virtual machine instruction that causes branch, and providing an analysis function by applying a hook, to the hook point of the script engine, the hook including processing of, when an exception has occurred, changing a destination pointed by the virtual program counter to a head of a basic block immediately after a basic block in which the exception has occurred.

IPC Classes  ?

• G06F 9/455 - EmulationInterpretationSoftware simulation, e.g. virtualisation or emulation of application or operating system execution engines

Abstract

The present disclosure relates to a wireless communication device, a wireless communication method, and a wireless communication system which perform communication between a plurality of wireless modules. The wireless communication device includes: a plurality of wireless modules; and a control circuit, in which: the wireless modules have a function of performing wireless communication, a function of monitoring a total transmission time of the wireless communication per certain observation period, and a function of limiting the wireless communication when the total transmission time reaches a certain time; and the control circuit has a function of determining a different start timing of the observation period for each wireless module.

IPC Classes  ?

• H04W 74/0816 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
• H04W 24/08 - Testing using real traffic

Abstract

A communication device is a first communication device in an optical communication system including the first communication device, a second communication device, and a control device that controls opening of an optical path between the first communication device and the second communication device, and the communication device includes a first reception unit configured to receive a downlink control signal that is an optical signal having a predetermined wavelength transmitted from the control device; and a second reception unit configured to receive a main signal that is an optical signal having a wavelength different from the predetermined wavelength transmitted from the second communication device.

IPC Classes  ?

• H04B 10/40 - Transceivers
• H04J 14/02 - Wavelength-division multiplex systems

Abstract

A communication control device that controls setting of an optical path between a first communication device and a second communication device includes: a detection unit that detects a main signal on which an uplink control signal transmitted from the first communication device is superimposed and detects a transmission timing of the uplink control signal; a determination unit that determines a transmission timing of a downlink control signal so as not to overlap with the transmission timing of the uplink control signal on the basis of the transmission timing of the uplink control signal detected by the detection unit and a predetermined control signal transmission rule; and a transmission unit that transmits the downlink control signal to the second communication device at the transmission timing of the downlink control signal determined by the determination unit.

IPC Classes  ?

• H04J 14/02 - Wavelength-division multiplex systems
• H04B 10/27 - Arrangements for networking

Abstract

A control apparatus includes circuitry configured to communicate with a second control apparatus at a different base from the control apparatus in a power supply system, before performing power interchange, lock at least one first power feeding path for a period of time, and control a converter and one or more breakers in a power feeding network based on the first power feeding path that is determined not to intersect with a second power feeding path different from the first power feeding path, during powering.

IPC Classes  ?

• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

A server delay controller includes: a packet harvesting unit that refers to a packet held in a ring buffer when a packet arrives and executes harvesting to delete an entry of a corresponding queue from the ring buffer, a sleep management unit that puts the thread to sleep in a case in which a packet does not arrive for a predetermined period, and cancels the sleep of the thread through a hardware interrupt at the time of packet arrival, and an idle state recovery control unit that periodically wakes up the thread during sleep or wakes up the thread immediately before the packet arrival in accordance with a packet arrival timing.

IPC Classes  ?

• H04L 43/02 - Capturing of monitoring data
• G06F 9/48 - Program initiatingProgram switching, e.g. by interrupt
• G06F 9/54 - Interprogram communication

Abstract

A selectable bit rate determination device disclosed herein comprises: a perceived quality estimation unit that calculates an estimated value of perceived quality for a bit rate in a range designated for a Web conference service; a power consumption estimation unit that calculates an estimated value of power consumption for the bit rate in the range on the basis of the characteristic that the increase in power consumption per unit bit rate decreases as the bit rate increases; a normalization unit that normalizes each of the estimated value of perceived quality and the estimated value of power consumption; an index calculation unit that, on the basis of the normalized estimated values, calculates an index that increases as perceived quality increases and power consumption decreases; and a selection unit that selects, as a bit rate that can be selected in the Web conference service, a bit rate related to the estimated value of perceived quality corresponding to the maximum point of the index in the relationship between the index and the estimated value of perceived quality calculated for the bit rate in the range. The selectable bit rate determination device thus supports bit rate control capable of suppressing power consumption while increasing perceived quality.

IPC Classes  ?

• H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
• H04L 41/142 - Network analysis or design using statistical or mathematical methods
• H04L 65/403 - Arrangements for multi-party communication, e.g. for conferences

Abstract

This photoelectric conversion device comprises: a first light source that outputs a plurality of lights for generating a first electrical signal; a second light source that outputs a plurality of lights for generating a second electrical signal; a plurality of lights that are obtained on the basis of the second light source and that have a plane of polarization or a polarization rotational direction different from the plurality of lights output from the first light source; and one or more photo mixers that generate one or more radio frequency signals on the basis of the plurality of lights output from the first light source.　

IPC Classes  ?

• H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier

Abstract

This photoelectric conversion device is provided with: a first light source that outputs a plurality of light beams for generating a first electrical signal; a second light source that outputs a plurality of light beams for generating a second electrical signal; one or more phase adjustment circuits that adjust phases of the plurality of light beams output from at least the second light source such that the phases are different from phases of the plurality of light beams output from the first light source; and one or more photomixers that include at least a first photodiode to which the plurality of light beams output from the first light source and the plurality of light beams output from the second light source are input to generate an AC current, and a second photodiode to which the plurality of light beams output from the first light source and a plurality of light beams having phases adjusted by the one or more phase adjustment circuits are input to generate an AC current, the one or more photomixers generating one or more radio frequency signals on the basis of outputs from the first photodiode and the second photodiode.　

IPC Classes  ?

• H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier

Abstract

An access point according to one aspect of the present invention is provided with a management unit having scheduled therein a service period for a terminal device group including a terminal device, the service period being a period during which data communication can be carried out via the access point, so that the management unit skips data communication by the terminal device in service periods that occur after completion of a handover of the terminal device from another access point to the access point.

IPC Classes  ?

• H04W 88/08 - Access point devices
• H04W 36/00 - Handoff or reselecting arrangements

Abstract

This disclosure relates to a wireless communication system, a communication device, and a wireless communication program. The system is provided with a centralized control device and a plurality of APs. The centralized control device is configured to execute: a process for collecting information about the presence/absence and degree of mutual interference between the APs; a process for allocating a radio resource to each AP on the basis of the collected information; and a process for transmitting an update instruction for a parameter specifying a radio resource to the relevant AP. The update instruction is transmitted such that the timings at which the APs update the parameters are dispersed.

IPC Classes  ?

• H04W 16/10 - Dynamic resource partitioning
• H04W 28/16 - Central resource managementNegotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

The present disclosure relates to a communication device, a wireless communication system, and a wireless communication program. The communication device controls an AP, and is configured to perform a process for calculating a utility function for each combination of set values including a channel which can be assigned to the AP, and a process for selecting the optimal combination on the basis of the utility function. Selection is performed prioritizing a combination that is currently in use.

IPC Classes  ?

• H04W 24/02 - Arrangements for optimising operational condition
• H04W 16/10 - Dynamic resource partitioning

Abstract

A network management device according to one embodiment of the present invention comprises: an extraction unit that, when a failure has occurred in a communication path of a communication network configuration, extracts a failure influence range resulting from occurrence of the failure in the communication path in the communication network configuration, and extracts candidates for a detour path of the communication path related to provision of service using the communication network configuration within a range limited to the extracted failure influence range; and an output unit that identifies and outputs an appropriate communication path as the detour path among the candidates extracted by the extraction unit.

IPC Classes  ?

• H04L 41/0654 - Management of faults, events, alarms or notifications using network fault recovery

Abstract

An aspect of the present invention is an optical transmission system in which one or more optical transmitters and one or more optical receivers perform communication via an optical transmission path, the optical transmission path including a plurality of relay nodes including optical amplifiers that amplify optical signals, the one or more optical transmitters transmitting optical signals at a plurality of channel frequencies, the one or more optical receivers estimating variations in intensities of the optical systems on the optical transmission path for each of the plurality of channel frequencies, the optical transmission system including: a network controller that acquires estimation information indicating a result of estimating the variations from the one or more optical receivers and acquires gain spectra of the optical amplifiers in the optical transmission path on the basis of the acquired plurality of pieces of estimation information.

IPC Classes  ?

• H04B 10/29 - Repeaters
• H04B 10/27 - Arrangements for networking

Abstract

A wireless communication method according to one embodiment is a method, wherein wireless communication is established between at least one mobile transceiver station provided with a plurality of antennas and a base station provided with a plurality of antennas, the method including: estimating channel information for each of one or more channels based on location information for each of the antennas that transmit and receive radio waves; predicting an external factor affecting each channel for which channel information is estimated; calculating a channel capacity for each channel for which channel information is estimated based on the predicted external factor; determining a channel combination that maximizes the total channel capacity of wireless communication established between the at least one transceiver station and the base station based on each calculated channel capacity; and controlling an orientation of each antenna for transmitting and receiving radio waves based on the determined combination. lkfhlw

IPC Classes  ?

• H04L 25/02 - Baseband systems Details
• H04B 7/185 - Space-based or airborne stations
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management

Abstract

An analysis function providing method executed by an analysis function providing device includes first analyzing a virtual machine of a script engine and acquiring a virtual program counter that is a variable indicating an instruction of the virtual machine to be executed next and a conditional branch flag that is an area for holding a flag as to whether or not branch is made at a time of conditional branch in an execution state, and providing an analysis function to the script engine by applying a hook including processing of detecting an instruction sequence a number of times of repeated execution of which is greater than or equal to a threshold and stopping execution of the instruction sequence by rewriting a condition related to a conditional branch at an end of the instruction sequence on a basis of the virtual program counter and the conditional branch flag.

IPC Classes  ?

• G06F 9/32 - Address formation of the next instruction, e.g. by incrementing the instruction counter
• G06F 9/30 - Arrangements for executing machine instructions, e.g. instruction decode

Abstract

Provided is an image correction device and the like, which allow improvement of realistic feeling of colors and texture of a projection portion by correcting a projection image in consideration of brightness of the projection portion with respect to surroundings. Where a projection portion is a range in which a projector projects an image on a projection target, an imaging portion is a range captured by a camera, the imaging portion is larger than the projection portion, and the imaging portion includes the projection portion, the image correction device includes: a projection result estimation unit configured to estimate an image obtained when a projection image is projected onto a projection target, and to obtain a projection result estimation image; a perception distance calculation unit configured to calculate a perception distance that is a perceptual difference in brain representation between a target image and the projection result estimation image; and a projection image update unit configured to update the projection image so as to reduce the perception distance, and to obtain an updated projection image, wherein the projection result estimation image and the target image are images having a size identical to the imaging portion.

IPC Classes  ?

• H04N 9/31 - Projection devices for colour picture display

Abstract

An optical transmitter includes a multiplexed signal generation unit that multiplexes a plurality of narrowband signals and generates a broadband optical modulated signal; and a semiconductor optical amplifier that amplifies intensity of the broadband optical modulated signal.

IPC Classes  ?

• H04B 10/50 - Transmitters
• H04B 10/61 - Coherent receivers
• H04J 14/02 - Wavelength-division multiplex systems

Abstract

Provided is a technique for measuring the sound pressure of a sound field by means of a discretionary sound present in a Fabry-Perot resonator. The present invention includes: a measurement light source that can be frequency-modulated and that emits laser light used for measurement (hereinafter referred to as measurement light); an optical resonator that has a sound field formed therein by a sound (hereinafter referred to as measurement target sound) to be subjected to sound pressure measurement, and that emits reflected light or transmitted light of the incident measurement light; a first photodetector that converts reflected light or transmitted light of the measurement light into a detection signal constituting an electric signal; a frequency control unit that, on the basis of the detection signal, controls the measurement light source so that the frequency of the measurement light matches the resonance frequency of the optical resonator; a frequency fluctuation measurement unit that measures frequency fluctuations of the measurement light; and a sound pressure calculation unit that calculates the sound pressure of the measurement target sound from the frequency fluctuations of the measurement light.

IPC Classes  ?

• G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
• H04R 23/00 - Transducers other than those covered by groups

Abstract

A receiver including: a data signal interpolation unit for interpolating a data signal; a down-sampling filter calculation unit for calculating a filter for down-sampling the interpolated data signal on the basis of the data signal; and a data signal down-sampling unit for down-sampling the interpolated data signal by the filter.

IPC Classes  ?

• H04L 27/227 - Demodulator circuitsReceiver circuits using coherent demodulation
• H04B 10/69 - Electrical arrangements in the receiver

Abstract

This wireless communication device comprises: a wireless communication unit (11) that acquires wireless communication information about a communication terminal (2); a first acquisition unit (12) that acquires terminal space information, which is space information about the communication terminal (2); a second acquisition unit (13) that acquires peripheral space information, which is space information about a surrounding object around the communication terminal (2); a data generation unit (14) that generates training data on the basis of the wireless communication information, the terminal space information, and a plurality of pieces of the peripheral space information; a model generation unit (15) that executes machine learning using the training data and constructs a prediction model that outputs a target parameter indicating the communication quality of the communication terminal (2); and a use unit (16) that inputs the terminal space information and the peripheral space information to the prediction model and acquires the target parameter to execute wireless communication.

IPC Classes  ?

• H04W 16/20 - Network planning tools for indoor coverage or short range network deployment

Abstract

22 conditions; and a method for producing an algae culture product.

IPC Classes  ?

• C12N 1/13 - Unicellular algaeCulture media therefor modified by introduction of foreign genetic material
• C12N 15/31 - Genes encoding microbial proteins, e.g. enterotoxins

Abstract

An angle amplifier (12) of this invention is an angle amplifier that a beamformed electromagnetic wave enters at a predetermined steering angle, and includes a plurality of metamaterial-based elements (121_1 to 121_n). The metamaterial-based element is formed by a metamaterial cell and a filling material, the plurality of metamaterial-based elements are arranged point-symmetrical with respect to a center of the angle amplifier, and an exit angle of the electromagnetic wave that exits from the angle amplifier is larger than the predetermined steering angle.　Hence, this invention can provide an angle amplifier capable of amplifying the steering angle of a beamformed incident electromagnetic wave beam.

IPC Classes  ?

• H01Q 15/02 - Refracting or diffracting devices, e.g. lens, prism

Abstract

An estimation device for estimating a wireless communication quality value, the estimation device comprising: a quality information holding unit that stores position information and a wireless communication quality value for each observation point among a plurality of observation points; and an estimation processing unit that estimates a wireless communication quality value at an estimation point by performing spatial interpolation in consideration of spatial characteristics on the basis of the position information and wireless communication quality values of the observation points stored by the quality information holding unit.

IPC Classes  ?

• H04W 16/18 - Network planning tools
• H04W 24/10 - Scheduling measurement reports

Abstract

The present disclosure provides: a recombinant alga; and a method for killing an alga at a desired time.

IPC Classes  ?

• C12N 1/13 - Unicellular algaeCulture media therefor modified by introduction of foreign genetic material
• C12N 15/31 - Genes encoding microbial proteins, e.g. enterotoxins
• C12N 15/79 - Vectors or expression systems specially adapted for eukaryotic hosts

Abstract

An access point according to an embodiment of the present invention comprises a communication circuit and a processor. The communication circuit is configured to be capable of communicating with a plurality of access points. The processor is configured to determine, on the basis of information regarding each of the plurality of access points, whether each of the access points will use a spatial reuse function, and to apply a spatial reuse function setting based on the determination results to the plurality of assess points.

IPC Classes  ?

• H04W 28/16 - Central resource managementNegotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• H04W 16/28 - Cell structures using beam steering
• H04W 84/12 - WLAN [Wireless Local Area Networks]
• H04W 88/08 - Access point devices

Abstract

An access point according to an embodiment includes an acquisition unit and a control unit. The acquisition unit acquires information indicating that a terminal device to be handed over is a priority terminal for which data communication is prioritized. The data communication is executed with the priority terminal for which handover to the host device serving as a handover destination is completed, the data communication being executed during an allocated period of a scheduled restricted-target wake time service period (R-TWT SP) until a predetermined time elapses from the point when the handover is completed.

IPC Classes  ?

• H04W 72/566 - Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
• H04W 36/08 - Reselecting an access point
• H04W 36/16 - Performing reselection for specific purposes
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/512 - Allocation or scheduling criteria for wireless resources based on terminal or device properties for low-latency requirements, e.g. URLLC
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

The present invention has: at least one sub-connector (S) that branches at least one optical fiber (f1-f4) disposed between a first main connector (21) and a second main connector (22); and at least one cap (C) that can be connected to the sub-connector (S). In the sub-connector (S), at least one pair of end parts including a first end part and a second end part obtained by cutting the optical fiber is disposed. The cap (C) is constructed in at least one of connection between the pair of end parts, opening between the pair of end parts, and drawing-out of the pair of end parts.

IPC Classes  ?

• G02B 6/46 - Processes or apparatus adapted for installing optical fibres or optical cables
• G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

Abstract

One aspect of the present invention acquires data representing an action corresponding to an instruction recalled by a user, determines the type of the corresponding instruction on the basis of data representing the acquired action, selects a sensory stimulus previously associated with the determined type of the instruction, and executes processing for applying the selected sensory stimulus to the user. Meanwhile, the one aspect of the present invention acquires a brain wave pattern of the user when the sensory stimulus is applied, generates an instruction estimation model by using a set of the inputted instruction type and the acquired brain wave pattern as learning data, and stores the generated instruction estimation model.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer

Abstract

A voice recognition device (10) according to an embodiment includes a voice recognition unit (131) and a score calculation unit (132). The voice recognition unit (131) generates a lattice based on a result of voice recognition of speech. The score calculation unit (132) updates a score of the lattice based on an output of an NLM corresponding to each type of processing and a coefficient which is based on the number of repetitions or performance of the NLM during execution of each type of processing in each type of processing repeatedly executed a predetermined number of times (repeated lattice rescoring).

IPC Classes  ?

• G10L 15/01 - Assessment or evaluation of speech recognition systems
• G10L 15/16 - Speech classification or search using artificial neural networks
• G10L 15/183 - Speech classification or search using natural language modelling using context dependencies, e.g. language models

Abstract

A sample size estimation device includes an input unit, a cost function approximation unit, a network construction unit, a minimum convex cost flow problem solving unit, an estimation control unit, and an output unit. The network construction unit creates an instance of a minimum convex cost flow problem from a linearly approximated objective function approximated by the cost function approximation unit. The minimum convex cost flow problem solving unit obtains an optimum solution of the instance of the minimum convex cost flow problem. The estimation control unit controls and executes a whole MAP estimation by issuing a command while exchanging data with the cost function approximation unit, the network construction unit, and the minimum convex cost flow problem solving unit. The estimation control unit also obtains a MAP estimation solution from the optimum solution of the instance. The output unit outputs the obtained MAP estimation solution.

IPC Classes  ?

• G06F 17/18 - Complex mathematical operations for evaluating statistical data
• G06F 17/11 - Complex mathematical operations for solving equations
• G06F 17/17 - Function evaluation by approximation methods, e.g. interpolation or extrapolation, smoothing or least mean square method

Abstract

A wireless communication method in a wireless communication system including an aggregation station and an extension station that performs beamforming according to control of the aggregation station, in which the aggregation station transmits an optical signal including at least a beam control signal for controlling beamforming in the extension station and a transmission signal that is data to be transmitted to the extension station via an optical transmission line to perform beamforming control of the extension station, and the extension station transmits the transmission signal by setting, in a phase shifter or by switching a switch, a phase difference for performing beamforming in a specific direction on a basis of the beam control signal included in the optical signal.

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• H04J 14/02 - Wavelength-division multiplex systems

Abstract

In the present invention: an estimation unit (22) estimates a density map of a target image serving as a target of object detection, by using a density estimation model (30) which is generated in advance by machine learning to estimate a density map indicating the density of the probability that an object is present at positions in an image; an extraction unit (24) extracts a region serving as a target of object detection, on the basis of the probability density in the estimated density map (30); a detection unit (26), by applying an object detection model (32) which is generated in advance by machine learning in order to detect an object from an image, detects an object in the region of the target image corresponding to the extracted region; and a processing unit (28) performs processing for setting the size of the region to be extracted according to the density map (30) or the object detection result.

IPC Classes  ?

• G06T 7/00 - Image analysis

Abstract

This field-effect transistor comprises a gate interconnect (103), a first gate electrode (103a), a second gate electrode (103b), a drain interconnect (104), a source interconnect (105), a drain electrode connected to the drain interconnect (104), and a source electrode connected to the source interconnect (105). The drain electrode is formed from a first drain electrode (104a) and a second drain electrode (104b), and the source electrode is formed from a first source electrode (105a) and a second source electrode (105b). The first gate electrode (103a) and the second gate electrode (103b) are on top of an element region 102 and extending in the gate width direction from both sides of the gate interconnect (103).

IPC Classes  ?

• H01L 29/812 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a Schottky gate
• H01L 21/338 - Field-effect transistors with a Schottky gate

Abstract

A training device according to one aspect of the present invention includes: an input unit for inputting a data set for training a variational autoencoder; and a training unit for training the variational autoencoder from the data set so as to maximize a variational lower bound which includes, as a prior distribution of latent variables with a distribution obtained by exponentially slanting a standard Gaussian distribution using a prescribed function, an approximation of a KL divergence between an encoder of the variational autoencoder and the prior distribution. The approximation of the KL divergence is composed of the KL divergence between the encoder and the standard Gaussian distribution, an expected value of the function related to the encoder, and a prescribed constant.

IPC Classes  ?

• G06N 3/0455 - Auto-encoder networksEncoder-decoder networks

Abstract

This path provision assistance device has: an initialization unit that, on the basis of data indicating, for each of a plurality of nodes of a physical network, the magnitude of the possibility of being selected as an end point of a logical transmission path set in the physical network, calculates an expected value that is selected as an end point of the transmission path for each set of two nodes among the plurality of nodes, and sets, for the portion of the sets having higher expected values, a secured number that is the number of transmission paths to be secured in advance; a selection unit that, on the basis of the expected value, probabilistically selects a plurality of first sets from among all of the sets; a route search unit that, for each of the first sets, searches for a route to which the first set can be connected under a constraint condition that sets having a relatively large number of hops, among the sets for which the secured number is set, are preferentially passed through; and a secured number adjustment unit that increases the secured number for sets for which a prescribed condition is satisfied by the number of times that the shortest routes of first sets for which a route satisfying the constraint condition was not found pass therethrough.

IPC Classes  ?

• H04L 45/12 - Shortest path evaluation

Abstract

An evaluation device according to one aspect evaluates a process model representing a business process. The evaluation device comprises: an input unit for inputting a process model to be evaluated and an event log, which is a log of a trace representing one or more operations observed in the business process; and an evaluation value calculation unit that, on the basis of the process model and the event log, calculates, as an evaluation value of the process model, an approximate value of the generalization loss between the distribution of the trace as predicted from the process model by Bayesian estimation and the true distribution of the trace.

IPC Classes  ?

• G06Q 10/0633 - Workflow analysis

Abstract

Provided is a wireless communication system in which, based on a random access scheme, a transmission opportunity (TXOP) acquired by a wireless access point is granted to a wireless station when performing uplink data transmission from the wireless station to the wireless access point and the TXOP acquired by the wireless station is granted to the wireless access point when performing downlink data transmission from the wireless access point to the wireless station, the system includes a scheduling unit for TXOP granting determining one or more wireless stations having a quality of an uplink data transmission lower than a prescribed value as TXOP responders to which the wireless access point grants the TXOP, and determining one or more wireless stations having a quality of a downlink data transmission lower than the prescribed value as TXOP holders which grant the TXOP to the wireless access point.

IPC Classes  ?

• H04W 74/0833 - Random access procedures, e.g. with 4-step access
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 72/54 - Allocation or scheduling criteria for wireless resources based on quality criteria
• H04W 72/542 - Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
• H04W 74/04 - Scheduled access
• H04W 74/0816 - Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

An analysis function providing method executed by an analysis function providing device includes first analyzing a virtual machine of a script engine, and acquiring a hook point that is a part where an analysis code is inserted by applying a hook, and a virtual program counter that is a variable indicating an instruction of the virtual machine to be executed next, second analyzing an instruction set architecture that is a system of instructions of the virtual machine and detecting an offset value of the virtual program counter, and providing an analysis function by applying a hook, to the hook point of the script engine, the hook including processing of setting a value of a next virtual program counter to a value obtained by adding the offset value of the virtual program counter to a value of an immediately preceding virtual program counter when an exception has occurred.

IPC Classes  ?

• G06F 9/38 - Concurrent instruction execution, e.g. pipeline or look ahead
• G06F 9/32 - Address formation of the next instruction, e.g. by incrementing the instruction counter

Abstract

A data transfer device has, under control, a data processing device that performs data processing of a service function for data included in a received packet, receives a packet including a tag including a service function number of a service function constituting a service chain for implementing a service requested by a user and identification information of the service chain, acquires a transfer destination candidate of the packet from a routing table using the service function number of the received packet, decides a transfer destination of the packet based on the identification information of the service chain, and transfers the received packet to the data processing device or the data transfer device.

IPC Classes  ?

• H04L 45/50 - Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
• H04L 47/34 - Flow controlCongestion control ensuring sequence integrity, e.g. using sequence numbers

Abstract

On the assumption that a combined control object unit and a second type control object unit are alternately disposed along a Hamilton cycle at intermediate positions, and intermediate positions include an intermediate position M before exchange and an intermediate position M′ after exchange, a control device includes a first movement planning unit 1 and a first movement unit 2 that move each control object at an initial position S to an intermediate position M before exchange in control object units, a second movement planning unit 3 that creates a second movement plan for moving each control object assumed to be at a target position G to an intermediate position M′ after exchange in control object units, and an intermediate position exchange unit 4 that moves each control object at the intermediate position M before exchange to a movement destination of each control object determined by the second movement plan among intermediate positions M′ after exchange.

IPC Classes  ?

• G05D 1/69 - Coordinated control of the position or course of two or more vehicles
• G05D 101/00 - Details of software or hardware architectures used for the control of position

Abstract

A semiconductor device according to embodiments of the present invention is a field-effect transistor including a gate electrode between a source electrode and a drain electrode, wherein carriers travel between the source electrode and the drain electrode, a channel control layer is provided between a channel through with the carriers travel and the gate electrode, a recess is disposed at least in part of a surface in contact with the gate electrode on a source electrode side in the channel control layer, and a part of the gate electrode is filled in the recess.

IPC Classes  ?

• H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
• H10D 62/17 - Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions

Abstract

A communication device activation method performed by a wireless communication system including one or more communication devices installed on a ground and a wireless communication device that moves includes an activation signal generation step of generating an activation signal for activating the one or more communication devices, a frequency variation application step of applying, to the activation signal generated by the activation signal generation step, a frequency variation that compensates for a Doppler variation indicating a time variation in a Doppler shift that occurs in the activation signal, and a transmission step of transmitting the activation signal to which the frequency variation is applied by the frequency variation application step from the wireless communication device to the one or more communication devices.

IPC Classes  ?

• H04B 7/185 - Space-based or airborne stations
• H04B 7/195 - Non-synchronous stations

Abstract

An object of the present disclosure is to enable LPG applied over the entire length of an optical fiber without inhibiting an operation of taking out the optical fiber. An object of the present disclosure is to enable LPG applied over the entire length of an optical fiber without inhibiting an operation of taking out the optical fiber. The present disclosure relates to an optical fiber cable in which at least one or more optical fibers for transmission in at least two or more modes are gathered, the optical fiber cable including: a linear material abutting on at least one of the optical fibers, in which a thickness of the linear material periodically varies in a longitudinal direction of the linear material.

IPC Classes  ?

• G02B 6/02 - Optical fibres with cladding
• G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables