Abstract

A semiconductor laser of the present invention includes a first cladding layer, an active layer, and a second cladding layer sequentially provided on a substrate, includes a ridge portion arranged in a waveguide direction in the second cladding layer and a heater arranged near the ridge portion, and has an oscillation wavelength of 1.6 μm to 2.4 μm. Furthermore, a first guide layer and a second guide layer are provided between the first cladding layer and the active layer and between the active layer and the second cladding layer, respectively, a diffraction grating is provided at a boundary between the first cladding layer and the first guide layer or a boundary between the second cladding layer and the second guide layer, and an insulating film is provided on a surface of the second guide layer excluding the ridge portion, and the heater is arranged on the insulating film.

IPC Classes  ?

• H01S 5/06 - Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
• H01S 5/22 - Structure or shape of the semiconductor body to guide the optical wave having a ridge or a stripe structure
• H01S 5/343 - Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser

Abstract

In a multi-stage amplifier, a plurality of amplifier circuits are connected in series, and the amplifier circuit has a 0 dB frequency at which magnitude of a normalized transfer function normalized at a low frequency gain becomes 1 at a frequency other than a direct current.

IPC Classes  ?

• H03F 3/68 - Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics

Abstract

A communication system according to one embodiment is a communication system including a plurality of communication apparatuses, in which each communication apparatus includes: an application program configured to perform encrypted communication with another communication apparatus; a protocol conversion unit configured to transmit a message representing a predetermined procedure when a key request for a shared key to be used in the encrypted communication is received from the application program; a state management unit configured to receive a message from the protocol conversion unit to manage an execution state of the procedure, and to transmit the message to a protocol driver supporting a predetermined key sharing protocol; and a protocol driver configured to request a key sharing system that executes the key sharing protocol, to generate the shared key, when the message is received from the state management unit.

IPC Classes  ?

• H04L 9/40 - Network security protocols
• H04L 9/08 - Key distribution
• H04L 9/30 - Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy

Abstract

Provided is an evaluation apparatus and the like for evaluating a subject from a body motion of the subject and a behavior of an object accompanying the body motion of the subject. The evaluation apparatus evaluates, using time series data related to a body movement of a subject and time series data related to a behavior of an object accompanying the body movement, the subject on the basis of an error between a behavior of the object estimated from the body movement and an actual behavior of the object.

IPC Classes  ?

• A63B 24/00 - Electric or electronic controls for exercising apparatus of groups
• A63B 102/18 - Baseball, rounders or similar games

Abstract

An information processing apparatus includes a monotonic neural network, and a first calculation unit configured to calculate a cumulative intensity function based on an output from the monotonic neural network and a product of a parameter and time.

IPC Classes  ?

• G06N 3/08 - Learning methods

Abstract

An aspect of the present invention is a communication path search device that constructs a multicast path of a plurality of nodes connected to a network, the communication path search device including a network device information management unit configured to manage a device specification including constraint information on the number of branches of each of the nodes on the network, a network topology management unit configured to manage link information between the nodes on the network, and a multicast tree calculation unit configured to construct a Steiner tree of a path connecting a start node and an end node based on a new request, an existing request, the constraint information on the number of branches of each of the nodes, constraint information on a maximum number of branches of each of the nodes, and the link information, the new request and the existing request each including start node and end node information.

IPC Classes  ?

• H04L 45/24 - Multipath

Abstract

An aspect of the present invention is an optical transmission device including a connector that is able to be connected to an accommodation module accommodating an optical fiber such that optical communication is performed, an optical switch that receives an optical signal from the connector and outputs an optical signal to the connector, an optical switch controller that controls the optical switch, an up wavelength multiplexer/demultiplexer that multiplexes light of a plurality of wavelengths output from the optical switch and outputs the multiplexed light to a transmission line, and a down wavelength multiplexer/demultiplexer that demultiplexes light input from the transmission line and outputs the demultiplexed light to the optical switch, wherein the connector can be connected to any one of a one-core accommodation module and a two-core accommodation module as the accommodation module.

IPC Classes  ?

• H04Q 11/00 - Selecting arrangements for multiplex systems

Abstract

A program execution system including a data holding apparatus; a program providing apparatus; and a data processing apparatus that includes a mechanism for performing secret computing in a secure area is provided. The data holding apparatus transmits encrypted data of data D to the data processing apparatus, the program providing apparatus transmits an encrypted program of a program P to the data processing apparatus, the program providing apparatus transmits a secret key SKp to the data processing apparatus, the data processing apparatus generates a first signature by the secret key SKp on behalf of the program providing apparatus and transmits the first signature to the data holding apparatus, the data holding apparatus verifies the first signature and transmits a secret key SKd to the data processing apparatus, and the data processing apparatus computes, in the secure area, a result P(D) by executing the program P based on the data D.

IPC Classes  ?

• H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
• H04L 9/08 - Key distribution

Abstract

Provided is technique for estimating a psychological/cognitive state of a subject during task execution by using time-series data related to a blinking of the subject during the task execution. A time-series data acquisition unit that acquires time-series data (hereinafter referred to as subject time-series data) related to the blinking of the subject during a predetermined task, and a state estimation unit that generates a state estimation result indicating a psychological/cognitive state of the subject from the subject time-series data and time-series data (hereinafter referred to as reference time-series data) related to a blinking serving as a reference are included.

IPC Classes  ?

• A61B 5/16 - Devices for psychotechnics; Testing reaction times
• A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons

Abstract

A division unit divides communication traffic in a communication network into a plurality of streams. A calculation unit calculates a first abnormality degree based on a result of autoregressive analysis of a first stream among the plurality of streams, and a second abnormality degree based on a comparison result between the first stream and a second stream similar to the first stream. A determination unit determines whether the cause of the abnormality is the first stream, a stream different from the first stream, or a communication network based on the first abnormality degree and the second abnormality degree.

IPC Classes  ?

• H04L 43/08 - Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• H04L 41/147 - Network analysis or design for predicting network behaviour

Abstract

There is provided an apparatus for creating a three-dimensional model of an object having a small diameter from point cloud data representing three-dimensional coordinates. The apparatus is configured to cluster points included in the point cloud data, obtain a curve passing through points in a cluster for at least one cluster, extract point clouds disposed on a curve coincident with the curve passing through the points, and create a three-dimensional model of the object by connecting the extracted point clouds.

IPC Classes  ?

• G06T 17/00 - 3D modelling for computer graphics

Abstract

A vibration perception position control device includes a sound image localization setting unit, a vibration signal generation unit, a synchronization control unit, a guidance control unit, a sound control unit, and a vibration control unit. The sound image localization setting unit performs setting for localizing a sound image in a drive signal of a sound device on the basis of information indicating a direction of a sound source of each sound included in sound data. The vibration signal generation unit generates a vibration signal on the basis of information indicating vibration of a vibration device that applies vibration to a palm surface of a user. The synchronization control unit performs control to synchronize timings at which sound and vibration are generated. The guidance control unit controls presentation of guidance information for guiding the orientation and angle of the palm surface.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• G06F 3/16 - Sound input; Sound output

Abstract

A wireless communication system according to one embodiment is a wireless communication system including: one or more wireless terminals capable of communicating by both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band, which is higher than the first frequency band; and a multi-device compatible base station that accommodates the wireless terminals, and the wireless communication system includes: number-of-times measurement circuitry configured to measure the number of retries for attempting communication by the second communication scheme; and a controller to perform control such that the base station performs wireless communication by the first communication scheme without using the second communication scheme until a predetermined time elapses with respect to a wireless terminal in which the number of times measured by the number-of-times measurement circuitry exceed a predetermined number of times.

IPC Classes  ?

• H04W 28/04 - Error control

Abstract

In order to improve the use efficiency of a buffer memory and reduce distribution delay in a video processing device that processes, on a packet basis, video data to be distributed to a client terminal by a content provider, the video processing device comprises: a distribution processing unit that executes packet filtering processing, packet buffer processing, and video processing on video data to be distributed to the client terminal by the content provider; and a control unit that changes processing settings of the distribution processing unit on the basis of a control request issued by the content provider or the client terminal.

IPC Classes  ?

• H04N 21/647 - Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load or bridging bet

Abstract

This training device includes: a feature representation extraction unit that extracts a feature representation vector from an input signal by using an encoder for performing feature representation extraction; a downstream task execution unit that executes one or more downstream tasks by using the feature representation vector; a first cost calculation unit that calculates a first cost function as a restriction given to training of the encoder by using the feature representation vector; a second cost calculation unit that calculates a second cost function for training the downstream tasks by using output of the downstream tasks and correct answer data for the downstream tasks; a cost function weighting calculation unit that calculates a real number weighting for at least one of the first cost function and the second cost function; and a third cost calculation unit that calculates a multitask cost function by using the first cost function, the second cost function, and the real number weighting, and updates parameters of the encoder and parameters of the downstream tasks so as to reduce the multitask cost function.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

The training device (estimation device (1)) has a pseudo correct answer data generation unit and a multi-task training unit. The pseudo correct answer data generation unit generates pseudo correct answer data by inputting, to each of a plurality of single task models, task input data other than corresponding task input data, from among a plurality of pieces of task input data. The multi-task training unit trains a multi-task model by using the plurality of pieces of task input data and the pseudo correct answer data.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

The present invention receives input information indicating the required performance of an application and whether the application is of a performance-guaranteed type. On the basis of information indicating device configuration and topology in a plurality of container orchestration platforms, information for estimating the performance of an application, and information indicating a device allocated to a container that has already launched an application and whether the application is of the performance-guaranteed type, and using, as constraint conditions, information that indicates the respective use states of devices and the feature in which a device to be allocated to a performance-guaranteed-type application container is not allocated to two or more containers, the present invention determines a device allocated to a container that launches an application, and determines an allocation quantity for the device, so that a cost calculated by an optimization algorithm from the allocation quantity for each device is minimized. The present invention instructs a container orchestration platform pertaining to a device allocated to the container to allocate the device.

IPC Classes  ?

• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
• G06F 8/60 - Software deployment

Abstract

A learning device (10) comprises: a character recognition unit (11) that uses an image as an input, estimates a character string corresponding to an image by using a character recognition model (12), and outputs the character string as an estimated character string; a language model inference unit (13) that uses a correct character string as an input, obtains a generation probability for each character in the correct character string by using a language model (20), and outputs the generation probability for each character according to the language model (20); and a parameter update unit (14) that calculates the value of an error function by using the estimated character string, the correct character string, and the generation probability for each character according to the language model as inputs, and updates the parameter of the character recognition model so as to reduce the value of the error function.

IPC Classes  ?

• G06V 30/194 - References adjustable by an adaptive method, e.g. learning
• G06V 30/262 - Techniques for post-processing, e.g. correcting the recognition result using context analysis, e.g. lexical, syntactic or semantic context

Abstract

The purpose of the present disclosure is to provide an inspection system that can perform an inspection after adjusting the size of inspection radio waves in accordance with the size of a structure under inspection. This inspection system comprises a small unmanned aerial vehicle for transmission, a small unmanned aerial vehicle for reception, and a central control device. The central control device determines a first distance to the structure from the small unmanned aerial vehicle for transmission and a second distance to the structure from the small unmanned aerial vehicle for reception such that the radius of the Fresnel zone of the inspection radio waves is equal to the radius of the structure when the structure is treated as a circle. The small unmanned aerial vehicle for transmission transmits the inspection radio waves toward the structure at a location that is at the first distance from the structure. The small unmanned aerial vehicle for reception receives the inspection radio waves that have propagated through the structure at a location that is at the second distance from the structure. The central control device determines the presence or absence of damage in the structure on the basis of the variation with time of the received power of the inspection radio waves.

IPC Classes  ?

• G01N 22/02 - Investigating the presence of flaws

Abstract

The present disclosure is a node for constructing a blockchain network, the node including: a terminal management database in which storage regions are separated based on the degree of terminal movement, and in which terminal identification information and terminal position information are stored for each terminal; a position information processing unit that, on the basis of the reception of a position registration request transmitted by a position registration device in response to a request from a prescribed terminal, accesses a storage region corresponding to the degree of movement of the prescribed terminal in the terminal management database, and updates the position information of the prescribed terminal on the basis of the position information included in the position registration request; and a communication unit that shares the updated contents with another node.

IPC Classes  ?

• H04W 8/06 - Registration at serving network Location Register, VLR or user mobility server
• H04W 60/04 - Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
• H04W 92/24 - Interfaces between hierarchically similar devices between backbone network devices

Abstract

This signal processing method is executed by a signal processing device and includes steps for: estimating a frequency offset of a local oscillation light source of a receiver that has received an optical signal transmitted from a transmitter with respect to the frequency of a carrier wave of the optical signal; and changing, according to the value of the frequency offset, an update step size of a filter coefficient on a complex conjugate side in an adaptive equalization filter that adaptively executes equalization processing on a reception signal based on the optical signal. The step for changing may include reducing the update step size as the value of the frequency offset is smaller. The step of changing may include changing the update step size of the filter coefficient on the complex conjugate side in the adaptive equalization filter.

IPC Classes  ?

• H04B 10/61 - Coherent receivers

Abstract

An optical node device to which a first subscriber device and a second subscriber device are connected in an optical communication system in which the first subscriber device and the second subscriber device are mixed, the first subscriber device being connected by one core using different wavelengths in transmission and reception, the second subscriber device being connected by two cores using the same wavelength in transmission and reception, the optical node device including: a transmission/reception separator that transfers an optical signal transmitted from the first subscriber device and an optical signal addressed to the first subscriber device without interference; and an optical switch that controls a connection relationship between ports such that an optical signal transmitted from the first subscriber device or an optical signal addressed to the first subscriber device passes through the transmission/reception separator and an optical signal transmitted from the second subscriber device or an optical signal addressed to the second subscriber device does not pass through the transmission/reception separator, and outputs an optical signal input from a certain optical transmission line from another optical transmission line.

IPC Classes  ?

• H04Q 11/00 - Selecting arrangements for multiplex systems
• H04B 10/27 - Arrangements for networking

Abstract

A wireless communication system includes: a first wireless terminal capable of communicating through both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band higher than the first frequency band; a second wireless terminal that is compatible with communication through the first communication scheme and is not compatible with communication through the second communication scheme; and a multi-link compatible base station that accommodates the first wireless terminal and the second wireless terminal. A contention window value during transmission in communication between the base station and the first wireless terminal through the first communication scheme is set to a value greater than a predetermined value that is a contention window value during transmission in communication between the base station and the second wireless terminal through the first communication scheme.

IPC Classes  ?

• H04W 74/0816 - with collision avoidance
• H04W 8/22 - Processing or transfer of terminal data, e.g. status or physical capabilities
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A semiconductor photoelectrode includes a conductive or insulating substrate having a moth-eye structure on a surface; a semiconductor thin film disposed on a surface having the moth-eye structure of the substrate; a catalyst layer disposed on the semiconductor thin film; and a reflection layer disposed on a surface opposite to the surface having the moth-eye structure of the substrate.

IPC Classes  ?

• C25B 11/02 - Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
• C25B 11/052 - Electrodes comprising one or more electrocatalytic coatings on a substrate
• C25B 11/087 - Photocatalytic compound

Abstract

One aspect of the present invention acquires sensor data reflecting a motion state of a measurement object at a preset sample rate, estimates a feature amount representing the motion state from the acquired sensor data, compares the estimated feature amount with a determination index prepared in advance to generate determination information of the motion state, and variably sets a transmission parameter for transmitting the sensor data to a remote place for each sample on the basis of the generated determination information.

IPC Classes  ?

• A63B 24/00 - Electric or electronic controls for exercising apparatus of groups
• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information

Abstract

An information processing apparatus includes processing circuitry configured to receive an analysis target sentence as an input and generate a generation sentence, the generation sentence being a sentence regarding content of the analysis target sentence, and a classification type, the classification type being information indicating whether or not the generation sentence is a question sentence for information in which an answer is not included in the analysis target sentence, using a machine learning model learned in advance, and output the generation sentence and the classification type generated.

IPC Classes  ?

• G06F 40/279 - Recognition of textual entities
• G06F 40/40 - Processing or translation of natural language

Abstract

An optical communication system including an 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 transfer unit configured to convert simplex transmission into duplex transmission or converts duplex transmission into simplex transmission between a subscriber device and the optical switch or between a first port of the optical switch to which the subscriber device is directly or indirectly connected and a second port opposite to the first port, and transfers the optical signal so as not to cause interference between uplink and downlink.

IPC Classes  ?

• H04Q 11/00 - Selecting arrangements for multiplex systems
• H04B 10/27 - Arrangements for networking

Abstract

Provided is an acoustic signal output device including a single or plurality of driver units, a first housing portion in which a wall portion is provided with a single or plurality of first sound holes for leading out a first acoustic signal emitted from one of the driver units to an outside and a single or plurality of second sound holes for leading out a second acoustic signal emitted from one of the driver units to an outside, and a second housing portion in which a wall portion is provided with a single or plurality of third sound holes for leading out a third acoustic signal emitted from one of the driver units to an outside and a single or plurality of fourth sound holes for leading out a fourth acoustic signal emitted from one of the driver units to an outside. Here, an attenuation rate of the first acoustic signal at a farther second point with reference to a first point is equal to or less than a predetermined value smaller than an attenuation rate due to air propagation of an acoustic signal at the second point with reference to the first point. Alternatively, an attenuation amount of the first acoustic signal at the second point with reference to the first point is equal to or more than a predetermined value larger than an attenuation amount due to air propagation of an acoustic signal at the second point with reference to the first point.

IPC Classes  ?

• H04R 1/10 - Earpieces; Attachments therefor
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers

Abstract

A communication design support apparatus includes: a propagation model storage unit that stores a propagation model; an acquisition unit that acquires data in which structure data containing coordinate data is associated with data indicating propagation loss in a plurality of frequency bands; an input receiving unit that receives input of a frequency band for which a radio field intensity is to be estimated; and an estimation unit that inputs the frequency band to the propagation model and estimates the propagation loss.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A frequency state observation system according to an embodiment includes a spectrum observation device that observes a spectrum of a frequency range that can be used by a plurality of wireless communication systems, a control device that controls the spectrum observation device to perform a plurality of single sweeps over the frequency range, and a wireless communication device that transmits, by a radio signal, information indicating a frequency of occurrence of a signal having a predetermined threshold or more included in a spectrum observed by the spectrum observation device performing a plurality of single sweeps, with respect to a predetermined time.

IPC Classes  ?

• H04W 16/18 - Network planning tools
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 28/20 - Negotiating bandwidth

Abstract

The wireless communication system includes a plurality of wireless terminals each including a plurality of wireless interfaces corresponding to a plurality of channels in different frequency bands, and a wireless base station device that establishes wireless communication with the wireless terminals. Each of the wireless terminals performs channel sensing, and transmits sensing information including an identifier of a sensed channel, a sensing result of the channel, and an identifier of the wireless terminal. The wireless base station device calculates and stores the number of sensing channels for each of the wireless terminals on the basis of the sensing information, the number of sensing channels being the number of channels sensed by the wireless terminal, and allocates a reward according to the number of sensing channels to each of the plurality of wireless terminals.

IPC Classes  ?

• H04W 24/10 - Scheduling measurement reports
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/0446 - Resources in time domain, e.g. slots or frames

Abstract

000, the workers are rearranged so as to optimize an evaluation value including the motivation value of each worker.

IPC Classes  ?

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

Abstract

A communication system (100) includes: an agent (10) that is provided in an assessment target apparatus (20); and an assessment device (30) that carries out risk assessment for the assessment target apparatus (20). The assessment device (30) includes an assessment unit for carrying out, on the basis of the operation state of communication by the assessment target apparatus (20) acquired via the agent (10), risk assessment pertaining to vulnerability information transmitted to the assessment target apparatus (20).

IPC Classes  ?

• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities

Abstract

In an optimization device (10), an acquisition unit (15a) acquires data to be processed by a prescribed application. A disposition unit (15b) disposes attribute values of the data in a region of a relational database, a region of nodes of a graph database, and a region of the relationship between the nodes of the graph database, which are in a storage unit (14). A measurement unit (15c) measures the time required for an access, by the application, to each of the attribute values disposed in the regions. A calculation unit (15d) uses the measured time required for the access to each of the attribute values, and calculates the total time required for accesses by the application to respective different attribute values in a combination of all the attribute values in each of the disposed regions. A selection unit (15e) selects a region in which each of the attribute values is disposed and for which the calculated total time required for the accesses by the application becomes minimal.

IPC Classes  ?

• G06F 16/182 - Distributed file systems

Abstract

An unmanned aircraft 1 comprises: an electromagnet 111 provided to each leg part 11; and a control unit 10 that, when any leg part 11 is grounded, starts the corresponding electromagnet 111. After the electromagnet 111 is started, each leg part 11 is attracted to a grounding part 3 having a magnetic body.

IPC Classes  ?

• B64U 60/50 - Undercarriages with landing legs
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• B64D 27/24 - Aircraft characterised by the type or position of power plant using steam, electricity, or spring force
• B64D 45/00 - Aircraft indicators or protectors not otherwise provided for
• B64U 10/14 - Flying platforms with four distinct rotor axes, e.g. quadcopters
• B64U 70/99 - Means for retaining the UAV on the platform, e.g. dogs or magnets

Abstract

The present invention provides a lightning induction method using a water-propelled rocket 10 using water as a propellant. Water and compressed air are injected into the water-propelled rocket 10 provided with a metal rod 11 at its tip (Step S1), the water-propelled rocket 10 is launched toward a thundercloud (Step S2), and lightning is induced to the metal rod 11 and guided to water ejected by the water-propelled rocket 10 (Step S3).

IPC Classes  ?

• F03H 99/00 - Subject matter not provided for in other groups of this subclass
• F42B 15/00 - Self-propelled projectiles or missiles, e.g. rockets; Guided missiles

Abstract

A wireless system according to the present invention comprises an aggregation station and one or more extension stations, wherein: the aggregation station and the one or more extension stations use the same wavelength to perform communication in the uplink direction and the downlink direction; the aggregation station includes one or more first photoelectric conversion units that convert an input electric signal into an optical signal having a wavelength which is used for communication between the one or more extension stations, one or more second photoelectric conversion units that convert the input optical signal into an electric signal, and one or more circulators that transmit, to the one or more extension stations via an optical transmission path, the optical signal output from the one or more first photoelectric conversion units and that output, to the one or more second photoelectric conversion units, an optical signal input from another port; and the one or more extension stations include a first photoelectric conversion unit that converts an input electric signal into an optical signal having a wavelength which is the same as the wavelength used by the aggregation station, a second photoelectric conversion unit that converts an input optical signal into an electric signal, and a circulator that transmits, to the aggregation station via the optical transmission path, the optical signal output from the first photoelectric conversion unit and that outputs, to one or more second photoelectric conversion units, the optical signal transmitted from the aggregation station.　

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier

Abstract

The present invention provides a control device for designing a path to be provided to a user carrying out communicating between a first site and a second site, the control device comprising: an information acquisition unit that acquires information pertaining to the communication by the user; and a path design unit that, on the basis of the information, groups a plurality of paths between the first site and the second site, thereby assigning, as one line, this plurality of paths to the user.

IPC Classes  ?

• H04L 45/42 - Centralised routing

Abstract

A cooling fan control device (10) controls a cooling fan (23). The cooling fan control device (10) comprises: a power consumption estimation unit (12) that, on the basis of measurement information pertaining to power consumption in a unit (21) to be cooled that is measured by a sensor unit (22), estimates the power consumption in the unit (21) to be cooled; and a fan output calculation unit (11) that, in regard to the power consumption estimated by the power consumption estimation unit (12), refers to information pertaining to fan output characteristics indicating a fan revolution speed with respect to power consumption and determines the fan output of the cooling fan (23).

IPC Classes  ?

• G06F 1/20 - Cooling means
• G06F 1/3206 - Monitoring of events, devices or parameters that trigger a change in power modality
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids

Abstract

A server (100) comprises: a load monitoring unit (112) for monitoring the load of a split accelerator, which is divided into sizes corresponding to loads of an application (see application processing unit (111)); and an accelerator management unit (113) for allocating a split accelerator used by the application in accordance with the load, and instructing that the split accelerator to be used for the application be switched. The split accelerator may be a large split accelerator that is large in size, or a small split accelerator that is small in size, the split accelerator being sized according to the maximum load of the application.

IPC Classes  ?

• G06F 9/38 - Concurrent instruction execution, e.g. pipeline, look ahead

Abstract

One aspect of the present invention relates to an encoding device comprising an encoding unit that acquires, for a cell to be encoded of point cloud data to be encoded, a probability of existence of a point in the cell in accordance with existence of a point in another region, and encodes an occupancy map in the cell on the basis of the probability of existence.

IPC Classes  ?

• G06T 9/40 - Tree coding, e.g. quadtree, octree

Abstract

A business management device according to one embodiment of the present invention includes: an acquisition unit that acquires work time information indicating the change in a time series of time required for routine work of which an operator is in charge; and a business management unit that, in a period indicated by a model which makes the time required for the routine work appropriate and which defines a rest period in which routine work is not carried out, manages the routine work as rest work in the rest period defined by the model when the time required for the work acquired by the acquisition unit tends to increase.

IPC Classes  ?

• G06Q 10/0639 - Performance analysis of employees; Performance analysis of enterprise or organisation operations

Abstract

A data processing device according to one embodiment includes: an input unit that receives an input of an instruction that includes an instruction which describes a data processing procedure and which does not operate correctly; a conversion unit that converts, according to a predetermined conversion rule for data processing procedure instructions, the input instruction which does not operate correctly; and a search unit that searches for an instruction similar to the input instruction and/or the instruction following conversion by the conversion unit, from instructions created in advance and describing a data processing procedure.

IPC Classes  ?

• G06F 9/44 - Arrangements for executing specific programs

Abstract

The purpose of the present disclosure is to ensure the safety of a program.　Therefore, in the present disclosure, a certification terminal generates an electronic signature for an execution file using a secret key for a set of a hash value of a source code of a program and a hash value of an execution file, imparts the electronic signature to the execution file, generates an electronic signature for safety certification using a secret key for a set of the hash value of the source code of the program and a hash value of a safety certification, and imparts the electronic signature to the safety certification. Meanwhile, a verification terminal: calculates the hash value of the execution file; verifies the validity of the electronic signature for the execution file by using the hash value of the execution file, the electronic signature for the execution file, and a public key corresponding to the secret key as inputs; calculates the hash value of the safety certification; and verifies the validity of the electronic signature for safety certification by using the hash value of the safety certification, the electronic signature for safety certification, and the public key as inputs.

IPC Classes  ?

• G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• G06F 21/33 - User authentication using certificates
• G06F 21/64 - Protecting data integrity, e.g. using checksums, certificates or signatures

Abstract

To enable a prompt generation device for generating a prompt to be input to a large language model to easily generate a prompt that produces a more consistent response from the large language model, a prompt generation device according to the present invention includes: a creation unit that creates a prompt to be input to a large language model on the basis of a question or problem for a predetermined event; an acquisition unit that acquires a plurality of responses by inputting the prompt to the large language model a plurality of times; a calculation unit that calculates an evaluation index indicating consistency of the plurality of responses; and a correction unit that corrects the prompt so that a higher evaluation index can be obtained if the evaluation index is less than a predetermined threshold.

IPC Classes  ?

• G06F 40/56 - Natural language generation
• G06F 40/44 - Statistical methods, e.g. probability models

Abstract

This cutoff system includes a detection device and a cutoff device used on a power line. The detection device transmits an optical signal to the cutoff device via an optical communication line when an abnormality of a current or a voltage in the power line is detected. Upon receiving the optical signal, the cutoff device performs opening of the power line.

IPC Classes  ?

• H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
• H02H 3/087 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current for dc applications

Abstract

A data transfer device according to one embodiment includes: a data management unit that acquires first data from a first environment and acquires second data from a second environment; a pairing unit that performs pairing of related pieces of data among the respective pieces of data constituting the first data and pairing of related pieces of data among the respective pieces of data constituting the second data; and a data classification unit for generating a plurality of first data clusters from clustering the results of the pairing of the respective pieces of data constituting the first data, and generating a plurality of second data clusters from clustering the results of the pairing of the respective pieces of data constituting the second data; and a transition determination unit for generating a plurality of third data clusters by combining and clustering the plurality of first data clusters and the plurality of second data clusters, and extracting the third data cluster including at least one of the first data clusters.

IPC Classes  ?

• G06F 18/23 - Clustering techniques
• G06N 20/00 - Machine learning

Abstract

Provided is a signal processing method executed by a signal processing device, wherein the frequency offset of a local oscillation light source of a receiver, which has received an optical signal transmitted from a transmitter, relative to the frequency of a carrier wave of the optical signal is estimated, and if the estimated value of the frequency offset of the local oscillation light source of the receiver is less than a prescribed value, control is performed so as to change an update step size of the filter coefficients in each among: at least one among an adaptive equalization filter that is used in a transmitter characteristic compensation unit which performs compensation for waveform distortion occurring in the transmitter, or an adaptive equalization filter used in a receiver characteristic compensation unit which performs compensation for waveform distortion occurring in the receiver, said filters adaptively executing equalization processing on a reception signal based on the optical signal; and an adaptive equalization filter used in a transmission path characteristic compensation unit which performs compensation for distortion, other than wavelength dispersion, occurring in the transmission path.　

IPC Classes  ?

• H04B 10/61 - Coherent receivers

Abstract

A server (20) comprises an environment construction unit (22) that constructs a virtual tenant environment (23) from a use image read from a file storage unit (21), a pipeline processing unit (24) that executes a pipeline file on the virtual tenant environment (23), an image extraction unit (44) that extracts a use image satisfying a prescribed condition in the file storage unit (21), and an image deletion unit (61) that deletes the use image in the file storage unit (21) extracted by the image extraction unit (44).

IPC Classes  ?

• G06F 9/44 - Arrangements for executing specific programs
• G06F 16/11 - File system administration, e.g. details of archiving or snapshots

Abstract

A data construction device (10) comprises: a data acquisition unit (11) that acquires speech image data pertaining to speech by a first speaker and facial image data pertaining to the face of a second speaker; a data extension unit (121) that generates, on the basis of the speech image data and the facial image data acquired by the data acquisition unit (11), extended speech image data pertaining to speech by the second speaker; and a data construction unit (122) that constructs, as training data for training a learning model, a set of the extended speech image data generated by the data extension unit (121) and an impression label pertaining to an impression of the speech.

IPC Classes  ?

• G06V 10/774 - Generating sets of training patterns; Bootstrap methods, e.g. bagging or boosting

Abstract

This reception device comprises: a calculation unit that calculates a likelihood, a likelihood ratio, a log-likelihood ratio, or a path metric on the basis of a probability distribution obtained by replacing a probability density from a certain amplitude value of the probability density distribution of a normal distribution with a given probability value, a noise distribution obtained by noise measurement, or a t distribution using one or more reception symbols and a set of one or more constellation symbol candidates; and an error correction unit that, if the likelihood, likelihood ratio, log-likelihood ratio, or path metric has been calculated on the basis of the noise distribution or the t distribution, performs error correction on the basis of the calculated likelihood, likelihood ratio, log-likelihood ratio, or path metric, and if the likelihood, likelihood ratio, log-likelihood ratio, or path metric has been calculated on the basis of the probability distribution, performs error correction after performing processing on the calculated likelihood, likelihood ratio, log-likelihood ratio, or path metric on the basis of the noise amplitude of each of the one or more reception symbols.　

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04B 11/00 - Transmission systems employing ultrasonic, sonic or infrasonic waves

Abstract

An Uncore frequency control device (1) comprises: a monitoring unit (110) that collects HW operation status data from a compute (2) for a prescribed period; an analysis unit that employs data counted up over time as metrics to be analyzed, categorizes the metrics into a metrics A group in which a metrics value progressively increases as a load amount applied to an application increases, a metrics B group in which the metrics value decreases at a timing when degradation in application performance occurs, or a metrics C group in which the metrics value converges at a timing when degradation in application performance occurs, and determines metrics to be monitored; and a frequency control unit (140) that sets the Uncore frequency to the minimum value when the metrics B and C are not below the normalized value of the metrics A.

IPC Classes  ?

• G06F 11/30 - Monitoring
• G06F 1/3228 - Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
• G06F 1/324 - Power saving characterised by the action undertaken by lowering clock frequency

Abstract

This propagation characteristic estimation device estimates a radio wave propagation characteristic between a transmission point and a reception point. Environmental information indicates an arrangement of structural surfaces that reflect and scatter radio waves from the transmission point to the reception point. The propagation characteristic estimation device uses the environmental information as a basis for extracting a structural surface that is visible by line of sight from both the transmission point and the reception points as a structural surface of interest. The propagation characteristic estimation device estimates the radio wave propagation characteristic of a propagation path between the transmission point and the reception point by way of the structural surface of interest on the basis of a first area, which is the area of the structural surface of interest visible from the transmission point, and a second area, which is the area of the structural surface of interest visible from the reception point. If the structural surface of interest is a reflective surface of a dynamic reflector, the propagation characteristic estimation device estimates the radio wave propagation characteristic on the basis of the first and second areas for the case of hypothetically correcting the tilt of the reflective surface of the dynamic reflector so as to achieve a state of specular reflection.

IPC Classes  ?

• H04W 16/18 - Network planning tools

Abstract

This propagation characteristic estimation device estimates radio wave propagation characteristics between a transmission point and a reception point. Environment information indicates an arrangement of a structure surface that reflects and scatters radio waves from the transmission point to the reception point. The propagation characteristic estimation device extracts, on the basis of the environment information and as a target structure surface, a structure surface that is visible without obstruction from both the transmission point and the reception point. The propagation characteristic estimation device estimates the radio wave propagation characteristics of a propagation path between the transmission point and the reception point via the target structure surface, on the basis of: a first area that is an area of the target structure surface visible from the transmission point; a second area that is an area of the target structure surface visible from the reception point; and a reflection pattern that represents a level of a reflection wave reflected by the target structure surface. When the target structure surface is the reflection surface of a dynamic reflection plate, the propagation characteristic estimation device estimates the radio wave propagation characteristics on the basis of the reflection pattern corresponding to a setting value of a reflection angle of the dynamic reflection plate.

IPC Classes  ?

• H04W 16/18 - Network planning tools

Abstract

This wireless communication system comprises a terminal station, a terrestrial base station, a plurality of node stations constituting a non-terrestrial network; and a routing device. The terrestrial base station and at least one of the node stations are multi-carrier compatible stations comprising a first wireless child station corresponding to a first carrier and a second wireless child station corresponding to a second carrier. The routing device acquires the link capacity and traffic flow of communication routes leading to the multi-carrier compatible stations, and calculates congestion levels of the communication routes leading to the multi-carrier compatible stations on the basis of the link capacity and traffic flow. If the congestion level is at or above a threshold, the routing device chooses a communication route such that one of either the first or second carrier is accommodated by the wireless child stations provided in the multi-carrier compatible stations and the other is accommodated by a radio child station provided in a station different from the multi-carrier compatible stations. If the congestion level is below the threshold, the routing device chooses a communication route such that both the first and second carriers are accommodated by the wireless child stations provided in the multi-carrier compatible stations.

IPC Classes  ?

• H04W 28/08 - Load balancing or load distribution
• H04W 28/16 - Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• H04W 40/22 - Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• H04W 72/0457 - Variable allocation of band or rate
• H04W 84/06 - Airborne or Satellite Networks
• H04W 92/20 - Interfaces between hierarchically similar devices between access points

Abstract

The present disclosure relates to a radio communication system using a non-terrestrial network, and the purpose of the present disclosure is to provide a radio communication system capable of establishing a new line that will act as a replacement in anticipation of a line connected to airborne radio stations being disconnected. A radio communication system according to the present disclosure comprises: a ground base station; and a plurality of airborne radio stations that establish connecting lines with other nearby airborne radio stations or with the ground base station. The radio communication system calculates a predicted time at which the line is predicted to be disconnected. The radio communication system also determines a combination of airborne radio stations or a combination of an airborne radio station and the ground base station between which a new line is to be established as a replacement for the line predicted to be disconnected. The airborne radio stations or the airborne radio station and the ground base station that have been selected for the abovementioned combination start to establish a new line according to the combination at a time that is earlier than the predicted time by at least the time required to establish a new line.

IPC Classes  ?

• H04W 84/06 - Airborne or Satellite Networks
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data

Abstract

A failure estimation device according to an embodiment of the present invention comprises: a generation unit that, on the basis of a history of events generated in a topology composed of a plurality of nodes, generates a rule including a combination of a plurality of conditions in a condition part and including occurrence of a failure in the topology in a conclusion part; a calculation unit that calculates an occurrence rate of each of the plurality of conditions for each node type of the plurality of nodes; an adjustment unit that, on the basis of the occurrence rate, adjusts the condition part of the rule so as to specify that the node type in which each of the plurality of conditions is generated is restricted; and an estimation unit that estimates the occurrence of a failure from an event group newly generated in the topology on the basis of the adjusted rule.

IPC Classes  ?

• H04L 41/06 - Management of faults, events, alarms or notifications

Abstract

A deterioration acceleration device according to the present invention for accelerating combined deterioration of a polymer material comprises: a test object jig 18 that holds a test object made of the polymer material and that is capable of bending; a rotary table 16 that rotates the test object jig around a light source; and a bending mechanism 16, 17, 18, 19 that bends the test object jig when the test object jig reaches one or more prescribed positions.

IPC Classes  ?

• G01N 17/00 - Investigating resistance of materials to the weather, to corrosion or to light

Abstract

According to the present disclosure, precise core position alignment can be performed without end-face observation when inserting and arranging a plurality of MCFs into a multi-fiber optical connector.　The magnetic material-containing optical fiber (FB) according to the present disclosure comprises: a core region (RA); a magnetic region (MR) containing a magnetic material and disposed along the central axis of the core region; and a cladding region (CL) disposed such that the core region and the magnetic region are contained therein. The rotational position of the core region with respect to the central axis of the cladding region is adjusted by a magnetic force acting between the magnetic material contained in the magnetic region and magnetic material contained in a ferrule in a magnetic material-containing multi-fiber optical connector.

IPC Classes  ?

• G02B 6/02 - Optical fibres with cladding
• G02B 6/36 - Mechanical coupling means

Abstract

An antenna unit has a plurality of antenna elements which are disposed at respective positions where a plurality of parallel first straight lines intersect a plurality of parallel second straight lines orthogonal to the first straight lines in a plane. A first weighting unit converts, into an optical signal, a radio signal which has been received by each of the antenna elements, and gives, to the converted optical signal, a weighting which offsets the difference in phase that occurs in response to the difference in position of the antenna elements in the first straight line direction and a radio signal reception direction. A second weighting unit converts, into an electric signal, the optical signal to which the weighting has been given, and performs, on the converted electric signal, weighting which offsets the difference in phase that occurs in response to the difference in position of the antenna elements in the second straight line direction and a reception direction.

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

Abstract

According to the present invention, each of a plurality of antenna elements outputs a wireless signal obtained by receiving radio waves. An electro-optical conversion unit converts light output from a light source into optical signals intensity-modulated with each wireless signal obtained by each of the plurality of antenna elements. A weighting unit performs phase weighting for imparting, to each of the optical signals, a phase inclination that cancels out a phase difference occurring in a first sideband wave of the optical signal in accordance with a difference in position of the plurality of antenna elements and a desired direction that is a desired direction of arrival of the radio waves, and outputs a composite signal obtained by synthesizing the optical signals that have been subjected to the phase weighting. An extraction unit outputs a reception signal obtained by extracting the first sideband wave from the composite signal.

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier

Abstract

An angle control device according to one aspect of the present invention comprises: a display that includes a control unit and a display unit and that is worn by a user on the head; a movable riding unit which has a rotation mechanism and on which a user rides; and a control device that transmits video to the display and controls a rotation angle set in the riding unit on the basis of data in which has been recorded the movement to be reproduced, in synchronization with the video, by the riding unit. The control unit measures the oscillation of the head of the user in a state in which video is not displayed on the display unit. The control device limits the range of the rotation angle to be set in the riding unit on the basis of an oscillation measurement result by the control unit.

IPC Classes  ?

• G09B 9/06 - Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of ships, boats, or other waterborne vehicles

Abstract

An intent extraction device according to one embodiment comprises: a template generation unit that generates, as a template, a first sentence that is in a natural language and includes a first element of an intent; a sample generation unit that generates, as a plurality of samples, a plurality of second sentences in the natural language on the basis of the template; an annotation unit that generates a plurality of items of teacher data by associating the first element with each of the plurality of samples; an extraction unit that inputs each of the plurality of items of teacher data to a model and extracts a second element of the intent; and an update unit that updates a parameter of the model by comparing the first element and the second element.

IPC Classes  ?

• G06F 40/30 - Semantic analysis

Abstract

A communication control device according to an embodiment includes a device setting unit and a resource release unit. The device setting unit: sets each of a first device and a second device, which transmit and receive an optical signal, in a state in which a first port and a first light wavelength are used or not used; stores setting contents regarding an executed setting in a first database; receives, from the first device, a report of a use status of the first device regarding the first port and the first light wavelength; acquires the setting contents from the first database; and compares the reported use status with the acquired setting contents. If the reported use status and the acquired setting contents do not correspond with each other, the resource release unit requests the device setting unit to set the second device in the state in which the first port and the first light wavelength are not used.

IPC Classes  ?

• H04L 41/085 - Retrieval of network configuration; Tracking network configuration history
• H04L 41/0873 - Checking configuration conflicts between network elements
• H04L 45/42 - Centralised routing

Abstract

A subjective state data collection device according to an embodiment comprises: a question presentation unit for presenting a question; a notification timing generation unit for generating a notification time for notifying a user to answer the question after the question is presented; a notification unit for notifying the user in a non-visual manner when the notification time is generated; and a gesture determination unit for acquiring an answer of the user to the question on the basis of a gesture of the user when the notification is issued.

IPC Classes  ?

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

Abstract

Provided is an underwater sensor system comprising: sensors 1 that are installed on a cable 5 and disposed underwater; winders 2 for adjusting the length of the cable 5; and propellers 3 that are installed on the cable 5 and propel the sensors 1 underwater via the cable 5.

IPC Classes  ?

• G01D 21/00 - Measuring or testing not otherwise provided for

Abstract

Provided is a steering assistance system for assisting the steering of an unmanned aircraft by means of an operation device. An operation device 1 comprises: a device state-information transmission unit 14 that transmits position information and orientation information of the operation device to an unmanned aircraft; and an operation information transmission unit 15 that transmits operation information from the operator for the unmanned aircraft to the unmanned aircraft. An unmanned aircraft 2 comprises: a coordinate system management unit 24 that, on the basis of the position information and the orientation information of the operation device and the position information on the unmanned aircraft, calculates an operator coordinate system based on the viewpoint of the operator, and converts the operation information from the operator into operation information for the operator coordinate system; and a flight control unit 25 that controls flight of the unmanned aircraft in accordance with the operation information from the operator which has been converted for the operator coordinate system.

IPC Classes  ?

• B64U 10/13 - Flying platforms
• B64C 13/20 - Initiating means actuated automatically, e.g. responsive to gust detectors using radiated signals
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• G05D 1/00 - Control of position, course, altitude, or attitude of land, water, air, or space vehicles, e.g. automatic pilot
• G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors

Abstract

According to one embodiment, a wireless communication system includes a terminal, a relay device, and one or more reception devices, the terminal including a communication unit that performs wireless communication with at least the relay device, an acquisition unit that acquires a reception time, a reception strength, and position information stored at a storage unit of each of the reception devices with respect to a beacon signal transmitted by the relay device, an estimation unit that, on the basis of the reception times, reception strengths, and position information acquired by the acquisition unit, estimates the timing at which the relay device will transmit a beacon signal and a data signal next, and a control unit that performs control such that the communication unit begins transmission/reception of a data signal with the relay device at the timing estimated by the estimation unit.

IPC Classes  ?

• H04W 52/02 - Power saving arrangements
• H04W 84/06 - Airborne or Satellite Networks

Abstract

One aspect of the present invention relates to a reception directivity control device comprising: at least one light source; a first phase weighting unit that applies phase weighting in a first direction to light from at least one light source; a plurality of reception antennas that receive wireless signals; a plurality of electro-optical conversion units that perform electro-optical conversion on the wireless signals received by the plurality of reception antennas on the basis of a signal to which the first phase weighting unit has applied the phase weighting in the first direction; a second phase weighting unit that applies phase weighting in a second direction to the signals on which the plurality of electro-optical conversion unit has performed the electro-optical conversion; and a demodulation unit that demodulates the signals to which the second phase weighting unit has applied the phase weighting in the second direction, wherein the sum of the lengths of input-side lines from the first phase weighting unit to the plurality of electro-optical conversion units is equal to the sum of the lengths of output-side lines from the plurality of electro-optical conversion units to the second phase weighting unit.

IPC Classes  ?

• H04B 10/60 - Receivers

Abstract

The present disclosure relates to a wireless communication system, a wireless communication method, a wireless communication device, and a wireless communication program. This wireless communication system is provided with an imaging device and a control device. The imaging device is configured to perform a process for capturing an image for learning pertaining to the state of rainfall. The control device is configured to perform: a process for acquiring information relating to rainfall; a process for acquiring a transmission power attenuation amount resulting from rainfall; and a process for creating a model for estimating the transmission power attenuation amount resulting from rainfall on the basis of the image for learning, the information, and the attenuation amount. The imaging device is also configured to perform a process for capturing an image pertaining to the state of rainfall in a relevant environment. The control device is also configured to perform a process for estimating the transmission power attenuation amount in the relevant environment on the basis of the estimation model and the image, and a process for executing wireless communication control based on the result of estimating the attenuation amount.

IPC Classes  ?

• H04W 52/18 - TPC being performed according to specific parameters

Abstract

Provided is an optical transceiver for establishing a smooth high-frequency connection between a DSP and an optical module. The optical module may include an optical receiver module and an optical modulator module. The optical transceiver may include a single optical module that integrates the functions of both an optical receiver and an optical modulator. A high-frequency connection is implemented by means of a flexible substrate (FPC), and the FPC electrically connects a PAD of the upper surface of a DSP substrate and a PAD of a package of the optical module. In the FPC, the PAD for connection on one surface is connected to the DSP substrate side, and the PAD for connection on the other surface is connected to the optical module side. A DSP chip is mounted on the DSP substrate, and the entire DSP other than a region of the DSP substrate connected to the FPC may be covered with a lid.

IPC Classes  ?

• H04B 10/40 - Transceivers
• H04B 10/50 - Transmitters
• H04B 10/60 - Receivers

Abstract

A wireless communication system according to one embodiment comprises: a terminal; and a relay device that transmits a beacon signal and a data signal at a timing with high periodicity and high reproducibility while moving. The terminal comprises: a communication unit that receives the beacon signal transmitted by the relay device; a storage unit that stores the reception time and reception strength of the beacon signal received by the communication unit; an estimation unit that estimates a timing at which the relay device next transmits the beacon signal and the data signal on the basis of the reception time and reception strength stored by the storage unit; and a control unit that performs control such that the communication unit starts to transmit/receive the data signal to/from the relay device at the timing estimated by the estimation unit.

IPC Classes  ?

• H04W 84/06 - Airborne or Satellite Networks

Abstract

The present invention provides an optical transceiver capable of ultrafast operation by presenting a configuration for a smooth high-frequency connection between a DSP and an optical module in the optical transceiver. An optical transceiver according to the present disclosure comprises: at least one optical module that is mounted on a PCB; a DS that is mounted on the PCB; an FPC that connects the DSP and the optical module, or the PCB and the optical module; and a differential high-frequency line that is configured from a differential pair formed by a p-side line and an n-side line, and is formed such that a signal propagates inside a DPS substrate of the DSP, inside the optical module, and between the DSP and the optical module. The differential high-frequency line disposed between the DSP and the optical module has at least one first bent part.

IPC Classes  ?

• H04B 10/40 - Transceivers
• H04B 10/50 - Transmitters
• H04B 10/60 - Receivers

Abstract

Provided is a radio wave propagation simulation system comprising: a camera that captures an image; a 3D scanner that outputs 3D data on the basis of image data captured by the camera; and a radio wave propagation simulation device that simulates radio wave propagation. The radio wave propagation simulation device comprises: a 3D model creation unit that creates a 3D model of a target surface in a target environment on the basis of information acquired from the camera or the 3D scanner; a transmission/reception setting unit that sets the position of a transmitter and the position of a receiver in the target environment; a parameter setting unit that sets parameters of the simulation in the target environment; a surface characteristic estimation unit that estimates the surface characteristics of the target surface in the image on the basis of the image captured by the camera and a learning model created by machine learning; and a surface characteristic reflection unit that reflects information about the surface characteristics estimated by the surface characteristic estimation unit in the 3D model created by the 3D model creation unit.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G01R 29/08 - Measuring electromagnetic field characteristics

Abstract

The purpose of the present invention is to provide an underwater vehicle for which the underwater position thereof can be controlled without using a tether, a control system for the underwater vehicle, and a control method for the underwater vehicle.　An underwater vehicle control system according to the present invention comprises: a master device 20 having a transceiver 21 for underwater optical communication and a single optical pointer 22 for outputting a single wavelength; and an underwater vehicle 10 that is movable in water and performs the underwater optical communication with the master device 20. The master device 20 sequentially emits light Lp from the optical pointer 22 in such a manner as to surround a range Asig in which the underwater optical communication is possible. The underwater vehicle 10 includes: a detection unit 11 that detects the light Lp from the optical pointer 22; a control direction association table in which directions to move in are associated with positions where the light Lp has been detected; a determination unit that identifies the position of the detection of the light Lp from the point in time of the detection of the light Lp by the detection unit 11; and a control unit that moves the underwater vehicle 10 in accordance with the control direction association table on the basis of the position identified by the determination unit.

IPC Classes  ?

• G01S 1/70 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
• 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

Abstract

The purpose of the present invention is to provide an underwater device capable of controlling the underwater position thereof without using a tether, a control system for the same, and a control method for the same.　An underwater device control system according to the present invention comprises: a master machine 20 having a transmitter-receiver 21 for underwater optical communication and a single optical pointer 22; and an underwater device 10 that is movable in water and that performs the underwater optical communication with the master machine 20. The master machine 20 emits light Lp of the optical pointer 22 sequentially so as to surround a range Asig in which the underwater optical communication can be performed and while changing the wavelength of the light Lp. The wavelength of the light Lp of the optical pointer 22 is determined by a position with respect to the range Asig. The underwater device 10 comprises a drive unit 30 that moves the underwater device 10 in accordance with a control direction correspondence table on the basis of the wavelength of the light Lp identified by a detection unit.

IPC Classes  ?

• G01S 1/70 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
• 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

Abstract

This photoelectronic module is provided with a main wiring board (101), an optical circuit chip (102), an electronic circuit chip (103), an electronic component (104), an optical fiber (105), an auxiliary wiring board (121), and a housing (106). The auxiliary wiring board (121) is connected on the main wiring board (101) inside the housing (106), and the optical circuit chip (102) and the electronic circuit chip (103) are mounted on the auxiliary wiring board (121). Furthermore, the main wiring board (101) is provided with a protective film removal region (151). The protective film removal region (151) is a region in which a protective film on the outermost surface of the main wiring board (101) between the optical circuit chip (102) and an optical fiber extraction part (112) is removed.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

The present disclosure provides an optical device in which an optical transmitter including a plurality of optical modulators and an optical receiver including a plurality of photodetectors are integrated on a chip substrate, the transmitter and the receiver being arranged in series in the optical axis direction of the optical modulators. This configuration eliminates the space formed on the side of the optical receiver where optical circuit elements are not mounted, resulting in a smaller chip size and improved mounting efficiency of the optical device.

IPC Classes  ?

• G02F 1/01 - 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 modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The present invention curbs an increase in cost associated with an increase in the number of components and attains a more compact size for an optical communication module.　Provided is an optical communication module (20) having N pairs (where N is an even number) of transmitter/receiver units including an optical transmitter (TX) and an optical receiver (RX). The module comprises K (where K ≤ N/2) optical circuit chips (25) and K fiber arrays (26) with respect to N digital signal processing circuit chips (22). A transmit signal input terminal group (25IN) of the optical transmitter (TX) and a receive signal output terminal group (25OUT) of the optical receiver (RX) are disposed along one side of the optical circuit chip (25), and the fiber array (26) is connected to the side opposite said one side.

IPC Classes  ?

• G02B 6/30 - Optical coupling means for use between fibre and thin-film device
• G02B 6/12 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind

Abstract

The present disclosure realizes optical devices with diverse connection configurations by means of a single type of optical device. The present disclosure provides an optical device in which an optical transmitter including a plurality of optical modulators and an optical receiver including a plurality of photodetectors are integrated on a chip substrate, wherein optical signal inputs/outputs to/from the optical transmitter and optical signal inputs to the optical receiver are integrated on one side edge of the chip substrate and also integrated on the opposite side edge across from the one side edge.

IPC Classes  ?

• G02F 1/01 - 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 modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The present invention comprises: a generation unit (22) that generates a control signal (s0) that is generated at a time earlier than a synchronization signal (s1) by a prescribed time (tc); a first measurement unit (13) that starts charging a capacitor (C1) from the generation time (t0) of the control signal and measures a first voltage (V1) charged up to a detection time (t1) of the synchronization signal; a second measurement unit (14) that starts charging the capacitor (C1) from the generation time of the control signal and measures a second voltage (T2) charged up to a detection time (t2) of a detection signal (s2); and a calculation unit (23) that calculates a quantum arrival time (T) from the difference between the second voltage and the first voltage.

IPC Classes  ?

• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Abstract

In a determination device (10), a storage unit (14) stores a supporter DB (14b) in which each candidate to be matched is associated with an evaluation parameter value of each candidate. An acquisition unit (15a) acquires matching strategy information for a user. A specification unit (15b) specifies a prescribed evaluation parameter corresponding to the acquired matching strategy information and a condition for the evaluation parameter value. An extraction unit (15c) refers to the supporter DB (14a) and extracts a candidate corresponding to the condition for the specified evaluation parameter value.

IPC Classes  ?

• G06Q 10/105 - Human resources

Abstract

A prediction device (10) has a feature extraction unit (12), a mapping unit (14), and an accuracy prediction unit (15). The feature extraction unit (12) extracts features of a data set. The mapping unit (14) maps the features extracted by the feature extraction unit (12) to parameters of a regression function for predicting the accuracy of a model. The accuracy prediction unit (15) predicts the accuracy of the model by using the regression function constructed on the basis of the parameters mapped by the mapping unit (14).

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

A classification device according to one aspect of the present disclosure is provided with: a creation unit that uses first series data composed of a plurality of feature amounts to create second series data composed of only one feature amount in each prescribed time zone; a model training unit that uses the second series data and correct answer labels for the first series data to train a classification model that predicts a label by using arbitrary length series data as an input; an order estimation unit that uses third series data composed of a plurality of feature amounts, correct answer labels for the third series data, and the trained classification model to estimate an optimal order of the types of the feature amounts for which the highest classification performance can be obtained when series data composed of only one feature amount in each of the time zones is input to the trained classification model; and a prediction unit that predicts a label for fourth series data by using the trained classification model and the fourth series data in which only one feature amount is measured in each of the time zones in accordance with the optimal order.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

This optical communication system comprises: a master station device; and a plurality of slave station devices that each transmit and receive a radio signal via an antenna. The master station device generates control information for controlling radio signal transmission operations at the slave station devices on the basis of the radio signal reception strength at the slave station devices, and transmits, to the slave station devices, an optical signal that includes a digital signal including the generated control information, and an analog main signal. The slave station devices each acquire the control information from the digital signal included in the optical signal received from the master station device, and switch the contents of a radio signal transmission operation according to the acquired control information.

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier

Abstract

The present invention supplies a reference frequency to time reference devices (ePRTC) in remote locations via an optical network 30, said reference frequency being necessary in order to satisfy a holdover standard. There is no need to prepare a plurality of reference frequency-generating high-accuracy frequency reference devices or the like for each location of the time reference devices. In a transmission-side node N1, an optical frequency comb 12 is used to generate an optical signal SG2 in which deterioration of frequency accuracy has been suppressed by synchronizing with a reference frequency signal SG1 and which has been converted to a communication wavelength band, and the optical signal SG2 is sent to the optical network 30 via an optical frequency repeater 13. In a reception-side node N2, an optical signal SG4 received from the optical network 30 is inputted to an optical frequency comb 17 via an optical frequency repeater 16, and a frequency signal that has been synchronized with the received signal is generated. A time reference device 18 uses the frequency of a signal SG6 outputted by the optical frequency comb 17 to achieve time holdover at an accuracy that is within the standard. The optical frequency repeaters 13, 16 eliminate the influence of fiber noise.

IPC Classes  ?

• H04B 10/25 - Arrangements specific to fibre transmission

Abstract

[Solution] The present invention reduces the time error of a reference time provided to a user to be within an acceptable value in situations where GNSS or other time information has been disrupted. The present invention involves both a first reference frequency generation unit capable of outputting a first frequency signal with a stable frequency and a second reference frequency generation unit capable of outputting a second frequency signal with higher accuracy than the first frequency signal. The operating status of the second reference frequency generation unit is monitored to determine the status, and the first frequency signal is preferentially selected over the second frequency signal when the second frequency signal is not present or is not stable. When the second frequency signal is present and stable, the second frequency signal is preferentially selected over the first frequency signal. The selected first or second frequency signal is used in time synchronization. The second frequency signal is generated by an optical clock or the like, the first frequency signal is generated by a cesium atomic clock or the like, and the time error is kept within 100 [ns], for example.

IPC Classes  ?

• H04L 7/00 - Arrangements for synchronising receiver with transmitter

Abstract

According to the present invention, training data including the positions and radio signal frequency information 28 of a transmission station Tx and a reception station Rx and a measured value L of a propagation characteristic generated thereunder is read. A top-view image 16 and a side-view image 18 in a predetermined range including the transmission station Tx and the reception station Rx included in the training data are generated on the basis of map data 20, 22. Training of a model (FNN part 26) progresses by using feature parameters extracted from each of the top-view image 16 and the side-view image 18, the frequency information 28, and the propagation characteristic L as training data. Estimation target data including the position and the radio signal frequency information 28 of the estimation targets, which are the transmission station Tx and the reception station Tx, is read. The top-view image 16 and the side-view image 18 for estimation are generated for the predetermined range including the transmission station Tx and the reception station Rx included in the estimation target data. The model is made to estimate the propagation characteristic on the basis of the feature parameter extracted from each of the top-view image 16 and the side-view image 18 for estimation and the frequency information 28 included in the estimation target data.

IPC Classes  ?

• H04W 16/18 - Network planning tools
• H04W 16/22 - Traffic simulation tools or models
• H04W 24/08 - Testing using real traffic

Abstract

A light receiver (100) comprises a substrate (101), a first semiconductor layer (111), a second semiconductor layer (114), a first electrode (116b), a second electrode (116a), and an optical waveguide connected to the first semiconductor layer (111). The first semiconductor layer (111) has a first region (111a) having a first thickness, and a second region (111b) having a second thickness less than the first thickness. The second semiconductor layer (114) has a higher refractive index than the first semiconductor layer (111) and is provided on the upper part of the second region (111b). The first electrode (116b) is provided at a position outside the second semiconductor layer (114) with respect to the first region (111a), and the second electrode (116a) is provided on the upper part of the second semiconductor layer (114).

IPC Classes  ?

• H01L 31/10 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by at least one potential-jump barrier or surface barrier, e.g. phototransistors

Abstract

The present disclosure relates to a wireless communication system, a wireless communication method, a wireless communication device, and a wireless communication program. This wireless communication system implements communication using a non-terrestrial network, and comprises a terminal station, a terrestrial base station, a plurality of node stations constituting a non-terrestrial network, and a route control device. The route control device is configured so as to perform processing to calculate a predicted time at which a communication link interruption will occur, processing to configure a plurality of communication routes serving as switching destination candidates, processing to calculate cost values of the plurality of communication routes serving as switching destination candidates on the basis of the predicted time, and processing to compare the cost values and select, from the plurality of communication routes serving as switching destination candidates, the communication route for which the cost value is the lowest.

IPC Classes  ?

• H04W 40/18 - Communication route or path selection, e.g. power-based or shortest path routing based on predicted events

Abstract

An information processing device according to one embodiment of the present invention comprises: an acquisition unit that acquires a search request requesting a search for, from among a plurality of users belonging to an organization, an advisor user to serve as an advisor for a first user; a storage unit that stores text information handled by a user terminal owned by the first user and communication information among a plurality of users; a pairing process execution unit that extracts a plurality of candidate users to serve as an advisor on the basis of the text information, and calculates a recommendation degree for the plurality of candidate users; a search unit that searches for a transmission path from the first user to the plurality of candidate users; a transmission index calculation unit that calculates an information transmission index indicating the ease of communicating between users included in the transmission path, on the basis of the communication information; an evaluation value calculation unit that calculates an evaluation value for the transmission path, on the basis of the information transmission index; a recommendation degree updating unit that updates the recommendation degree on the basis of the evaluation value; and an output control unit that outputs the advisor user and a transmission path to the advisor user on the basis of the updated recommendation degree.

IPC Classes  ?

• G06Q 10/10 - Office automation; Time management
• G06F 16/903 - Querying
• G06Q 50/10 - Services

Abstract

This coating restoration device for restoring a degraded coating of a cable comprises: a control unit that acquires information on the cable and executes control for causing a current to flow through the cable by a current supply method determined on the basis of the information; and a cable pressurization control unit that executes control for pressurizing the cable from the outside.

IPC Classes  ?

• H02G 1/16 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for repairing insulation or armouring of cables
• H02G 1/06 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle

Abstract

Disclosed is an optical transceiver that realizes smooth high-frequency connection between a DSP and an optical module. The optical module can include an optical receiver module and an optical modulator module. The optical transceiver may include a single optical module that integrates the functions of both an optical receiver and an optical modulator. The high-frequency connection is implemented by a flexible substrate (FPC), and the FPC electrically connects a PAD on the upper surface of a DSP substrate and a PAD on the package of the optical module. A connection PAD on one surface of the FPC is connected to the DSP substrate, and a connection PAD on the other surface of the FPC is connected to the optical module. A DSP chip is mounted on the DSP substrate, and the entire DSP may be covered by a lid except for a region of the DSP substrate that is connected to the FPC.

IPC Classes  ?

• H04B 10/40 - Transceivers
• H04B 10/50 - Transmitters
• H04B 10/60 - Receivers

Abstract

A transmission device 10 generates a header formed of multiphoton pulses having a light intensity that can be detected by a single-photon detector 31, and sends the header out to a fiber 100 for quantum communication. In a reception device 30, the single-photon detector 31 detects multiphoton pulses, and a synchronization unit 33 synchronizes a clock 11 of the transmission device 10 with a clock 34 of the reception device 30 on the basis of timing of detection of the multiphoton pulses at a predetermined position in the header.

IPC Classes  ?

• H04B 10/70 - Photonic quantum communication

Abstract

Provided are a configuration for realizing an optical transceiver capable of ultra-high-speed operation, a method for manufacturing the same, and a manufacturing apparatus. An optical transceiver according to the present disclosure includes at least one optical module mounted on a PCB, a DSP, and an FPC that connects the DSP and the optical module. The FPC furthermore includes: a first connection PAD on a first surface, the first connection PAD being connected by soldering to a PAD on a terrace surface of the optical module; a second connection PAD on a second surface, the second connection PAD being connected by soldering to a PAD on an upper surface of the DSP substrate; and a first connection PAD on both side surfaces. The FPC and the first connection PAD, and the FPC and the second connection PAD, are each connected by one or more through-holes or an embedded VIA, the through-holes having a diameter of 100 μm or greater.

IPC Classes  ?

• H04B 10/40 - Transceivers
• H04B 10/50 - Transmitters
• H04B 10/60 - Receivers

Abstract

This communication device includes: a plurality of light reception units that are connected to different power feeding light sources among a plurality of power feeding light sources for outputting power feeding light used for power feeding, and convert, into electrical power, the power feeding light output from the connected power feeding light sources; and a plurality of power supply units that supply the power, converted by each of the plurality of light reception units, to a power-supplied unit powered by the supplied power.　

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

Abstract

1nn), and is characterized in that the V-groove substrate includes a V-groove portion (304) that includes a connection end surface (305) and in which a V-groove is formed, and a root portion (306) that includes an end surface on the opposite side from the connection end surface, the plurality of optical fibers are fixed to the V-groove portion of the V-groove substrate by a pressing plate, and are fixed by a protective resin (309) at the root portion of the V-groove substrate, and the root portion of the V-groove substrate is provided with a level-difference-machined part or a chamfer-machined part (307) that guides an optical fiber at a prescribed curvature radius.

IPC Classes  ?

• G02B 6/24 - Coupling light guides
• G02B 6/30 - Optical coupling means for use between fibre and thin-film device

Abstract

This log transmission control device includes a transmission control unit configured to control the transmission of logs collected from a system to be monitored to nodes that execute predetermined processing on the logs. When congestion occurs with respect to the predetermined processing, the transmission control unit is configured to increase the nodes that are transmission destinations of the logs having a relatively high priority among the logs in comparison to a case in which congestion does not occur, thereby reducing the possibility that the handling of a log having a relatively high priority is impaired.

IPC Classes  ?

• G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation

Abstract

This database coupling method executes a right outer join, with the left side of the join being a first database which is encrypted and held by a first device, and the right side of the join being a second database which is plaintext and held by a second device. The database coupling method includes: a first procedure for executing an OPRF using a key set of the first database as input; a second procedure for executing a PC using the key set of the first database and a key set of the second database as input; a third procedure for calculating a random number sequence related to the key set of the second database; a fourth procedure for executing an OT using, as input, the random number sequence and a number set of elements, which are indicated as not being included as keys of the first database among characteristic vectors obtained by the PC; a fifth procedure for executing the OPRF using the random number sequence as input; a sixth procedure for transmitting, to the second device, an element sequence including an element associating a random number and a secret value of a value form the first database with each other; and a seventh procedure for calculating an output database.

IPC Classes  ?

• G06F 16/25 - Integrating or interfacing systems involving database management systems
• G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system

Abstract

Disclosed is a wireless communication method using a plurality of wireless channels and at least one backup wireless channel. According to the method disclosed herein, packets to be transmitted are distributed to a plurality of queues corresponding to the plurality of wireless channels. In addition, a portion of the packets transmitted by the plurality of wireless channels are copied to a backup queue, corresponding to the backup wireless channel, in equal proportions from the plurality of wireless channels. Further, in response to a reason for switching occurring in one of the plurality of wireless channels, the transmission of packets from the wireless channel having the reason for switching is switched to the transmission of packets from the backup wireless channel.

IPC Classes  ?

• H04L 1/24 - Testing correct operation