A wireless communication method includes phase shift amount determination processing for determining a phase shift amount for each subcarrier of transmission data, modulation processing for modulating the transmission data and further shifting a phase according to the phase shift amount for each subcarrier, and precoding processing for performing precoding on the transmission data after the modulation processing. The transmission data after the precoding processing is transmitted from the transmission device to the reception device. A plurality of types of phase shift patterns prepared in advance define different phase shift amounts. The phase shift amount determination processing includes: selecting, from among the plurality of types of phase shift patterns, one that minimizes a PAPR of the transmission data after the precoding processing or one that maximizes a data reception quality in the reception device; and determining the phase shift amount for each subcarrier according to the selected phase shift pattern.
Provided is an optical waveguide capable of suppressing optical loss in a groove portion into which a wavelength plate is inserted while eliminating polarization dependence. An optical waveguide according to the present disclosure is an embedded optical waveguide formed on a substrate, including a lower cladding; a core; an upper cladding; and a groove formed on one side of a side surface of the core with respect to a light propagation direction and extending in a direction parallel to the core, wherein a refractive index distribution in a plane perpendicular to the light propagation direction is a distribution in which a principal axis of a refractive index ellipse has a rotation amount with respect to a horizontal direction of the substrate.
A mutant creation apparatus according to an embodiment includes: a mutation induction unit that irradiates an organism, or a target for creating a mutant, with a radiation or electromagnetic energy for inducing a mutation in a nucleotide sequence that causes a trait variation in the organism or introduces a chemical substance into the organism for inducing the mutation; a selection unit that selects a mutant having a desired trait from mutants of the organism obtained by the mutation induction unit; a nucleotide sequence analysis unit that analyzes a nucleotide sequence of the selected mutant; an identification unit that identifies a nucleotide sequence that provides the desired trait of the mutant in the analyzed nucleotide sequence; and a condition analysis unit that analyzes a condition under which a desired mutant of the organism is created by the mutation induction unit based on a result of identification.
A wireless communication system according to an embodiment includes: a number-of-times measurement circuitry configured to measure the number of retries in which a first wireless terminal tries to perform communication in conformity with a first communication scheme; and a control circuitry configured to perform control such that the first wireless terminal performs wireless communication with a base station using a second communication scheme without using the first communication scheme until a predetermined time passes when the number of retries measured by the number-of-times measurement circuitry exceeds a preset number of retries less than a predetermined number of retries in which the second wireless terminal tries to perform communication in conformity with the first communication scheme.
A optimizing apparatus capable of solving an online matching problem according to an embodiment includes: circuitry configured to acquire input data including information regarding the node, a remaining amount given to a fixed node among nodes, the appearance probability given to an appearance node among the nodes, and a reward given to each edge when matching is performed, perform formulation to a first optimization problem based on the input data, determine whether or not all of the appearance nodes satisfy a predetermined assumption, perform transformation into a second optimization problem capable of obtaining an approximate solution that is a variable that controls a weight of each node and the appearance probability in the first optimization problem and a matching strategy in a case where the predetermined assumption is satisfied, obtain the approximate solution by solving the second optimization problem, and output the approximate solution.
The present disclosure is a device that detects each loss occurrence point of an optical fiber under test by using at least one of a loss distribution of first backscattered light from a first core or a loss distribution of second backscattered light from a second core, calculates a mode coupling matrix Ti at an i-th loss occurrence point of the optical fiber under test, calculates a fiber length Li of an i-th fiber section having a separation at the i-th loss occurrence point of the optical fiber under test, and calculates bidirectional crosstalk in the first core or the second core by using the calculated mode coupling matrix Ti and fiber length Li and using a fiber loss factor α and power coupling coefficient h of the optical fiber under test measured in advance.
An abnormality detection device according to an embodiment includes a measurement unit that measures a culture state of a sample of a culture target that is a culture target during mass culturing by a mass culturing device and that is fed to a microchannel chip and cultured under a set culture condition, and a detection unit that detects an abnormality in a culture state of a sample of the culture target by comparing an abnormality detection model in which a criterion for determining an abnormality in the culture state indicating that the culture state of the sample of the culture target is different from a normal culture state is defined for each of a plurality of culture conditions, and the culture state measured by the measurement unit for the sample and the set culture condition.
An optical power distribution estimation device includes: an optical power distribution estimation unit that estimates an optical power distribution on the basis of a reception signal based on an optical signal transmitted from an optical transmission device and received via an optical transmission line and a transmission signal restored based on the reception signal; a spatial response function calculation unit that calculates a spatial response function on the basis of the transmission signal and a dispersion value of the optical transmission line; and a digital filter application unit that obtains an ideal output by applying a digital filter based on the spatial response function to the optical power distribution.
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
9.
OPTICAL POWER DISTRIBUTION ESTIMATION APPARATUS, OPTICAL POWER DISTRIBUTION ESTIMATION METHOD, AND COMPUTER PROGRAM
An optical power distribution estimation device includes: a partial wavelength dispersion application unit that applies, to a signal, partial wavelength dispersion corresponding to a distance from an optical transmission device to an optical power measurement position; a nonlinear operation unit that performs, on the signal to which the partial wavelength dispersion has been applied, nonlinear operation using a linear term obtained by Taylor-expanding a mathematical expression used for phase rotation; a residual dispersion application unit that applies residual wavelength dispersion corresponding to a distance from the optical power measurement position to an optical reception device to the signal subjected to the nonlinear operation by the nonlinear operation unit; and a correlation calculation unit that estimates an optical power distribution of an optical transmission line by obtaining, for each optical power measurement position, a correlation between the signal to which the residual wavelength dispersion has been applied and a reception signal based on an optical signal transmitted from the optical transmission device and received via the optical transmission line.
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
10.
CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND PROGRAM
A control apparatus determines a relief carrier that relieves communication in a specific area and a tilt angle of the relief carrier. The control apparatus includes a first processor; and a first memory that includes instructions, which when executed, cause the first processor to execute a first method. The first method includes: aggregating a plurality of areas to collectively generate a single aggregated area; selecting a plurality of relief carriers for the aggregated area; and optimizing a plurality of tilt angles in the plurality of relief carriers.
H01Q 3/34 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means
Each of a plurality of distributed antennas is caused to perform an all-beam search performed by transmitting beams in all transmittable directions in a beam search period for searching for a beam to be used for wireless communication with a terminal device in a different order of the distributed antennas for each beam search period, the all-beam search is stopped when one beam identifier indicating a best beam has been acquired according to the all-beam search, a beam identified by the acquired beam identifier and information indicating a distributed antenna that has transmitted the beam indicated by the beam identifier is set as a detection reference beam, a beam identifier of a distributed antenna that has not performed the all-beam search, which corresponds to a beam that has been selected together with the detection reference beam, is detected as a candidate beam identifier for the distributed antenna from a beam combination history storage unit, and whether or not to cause the distributed antenna that has not performed the all-beam search in the beam search period to perform the all-beam search is determined on the basis of detection results.
In a radio wave lens, unit cells are two-dimensionally disposed on a plane of a substrate intersecting an incident radio wave. In the unit cells, a conductor portion bent in a crank shape in a plane of the substrate is formed, or a conductor-removed region bent in a crank shape in the plane of the substrate is formed in a conductor layer on the substrate. The unit cells in which the bending directions of the conductor portions or the bending directions of the conductor-removed regions are different from each other are two-dimensionally disposed according to a desired phase distribution of the radio wave transmitted through the unit cells.
An object of the present invention is to improve efficiency of an amplifying L band signal.
An object of the present invention is to improve efficiency of an amplifying L band signal.
The present disclosure is an optical fiber doped with a rare earth element for amplification, in which the optical fiber for amplification includes two or more cores in a cross section of a cladding, a core density C obtained by dividing number of cores by a cladding area is 0.0008 μm2 or more, and a core radius a is 1 μm or more and 3.5 μm or less.
An accelerator state control device includes a plurality of accelerators having different processing performance, and controls a state of the accelerators when arithmetic processing is performed by offloading specific processing of an application to the accelerators. The accelerator state control device includes: when data in which different processing deadlines are mixed is input, an arithmetic device performance collection/recording unit that collects and records performance information of the accelerators; a traffic amount/processing deadline prediction unit that predicts a traffic amount and a processing deadline; and an arithmetic device allocation determination unit that obtains a data amount corresponding to the processing deadline, and determines an accelerator that satisfies the performance on the basis of the data amount.
A communication system includes: one or more first optical communication devices; a second optical communication device that communicates with the one or more first optical communication devices; and a transmission path that connects the one or more first optical communication devices and the second optical communication device. The one or more first optical communication devices include: a transmitting unit that transmits an optical signal having a wavelength within a wavelength range for confirmation transmission characteristics in the optical transmission path to the second optical communication device via the optical transmission path. The communication system includes a specifying unit that specifies the transmission characteristics in the optical transmission path based on an optical signal having a wavelength within the wavelength range transmitted from the one or more first optical communication devices.
Provided is an optical communication device including: one or more light distribution units configured to include a first surface having a plurality of first ports and a second surface different from the first surface having a plurality of second ports, have one or more subscriber transmission device ports to which n (n is an integer equal to or greater than 1) subscriber transmission devices are connected and one or more downlink signal ports allocated to the plurality of first ports, have one or more subscriber reception device ports to which n subscriber reception devices are connected and one or more uplink signal ports allocated to the plurality of second ports, and output optical signals input from the first ports from the second ports; and a light distribution control unit configured to control a connection relationship between the plurality of first ports and the plurality of second ports of the one or more light distribution units.
A conversion device (100) includes a Sync message processing unit (11), a Follow_Up message processing unit (12), a Delay_Req message processing unit (13), a Delay_Resp message processing unit (14), a Pdelay_Req message processing unit (21), a Pdelay_Resp message processing unit (22), a Pdelay_Resp_Follow_Up message processing unit (23), an upper-side transmission delay calculation unit (40) that calculates a transmission delay time pt1 between a master device (200) and the conversion device (100), an internal processing time calculation unit (50) that calculates an internal processing time of the conversion device (100), and a CF processing unit (60) that stores a total value of pt1 and the internal processing time in a Follow_Up message.
An optical fiber cable (10A) includes a sheath (11) including an inner peripheral surface (11a) that forms an accommodation space (14), a coated optical fiber (12) accommodated in the accommodation space (14), and a tension members (13) provided in the sheath (11). A part of an outer peripheral surface (13a) of at least one of the tension members (13) is in contact with the inner peripheral surface (11a) of the sheath (11) from an inside of the sheath (11) or exposed from the inner peripheral surface (11a) to the accommodation space (14).
An optical path testing device and an optical path testing method divide output light from a laser light source into a probe optical path and a local optical path and convert modulated light obtained by modulating input light of the probe optical path into probe light including pulsed light, generate a beat signal by causing signal light and input light of the local optical path to interfere with each other, acquire a signal indicating backscattered light in the optical fiber on the basis of the beat signal, and analyzes a loss distribution, when generating the modulated light, perform first modulation and second modulation, and generate an analysis signal by averaging the backscattered light in each different frequency band included in the beat signal between the different frequency bands and acquire the loss distribution by analyzing an intensity of the backscattered light included in the analysis signal.
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
20.
OPTICAL POWER SUPPLY METHOD AND OPTICAL POWER SUPPLY SYSTEM
An optical power supply method includes: a step of transmitting, by a light source, light for optical power supply to an optical power supply line connected to an optical power supply unit; a step of amplifying, by an amplifier installed in the middle of a path of the optical power supply line, the light transmitted from the light source; and a step of receiving, by the optical power supply unit, the light amplified by the amplifier, and photoelectrically converting the light to obtain power.
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
21.
TIME STAMP INTERPOLATION METHOD, TIME STAMP INTERPOLATION SYSTEM AND SENSOR SYSTEM
A method for interpolating time stamps added to respective data transmitted and received in a sensor system is provided. The method includes acquiring a first data received at an arbitrary time and a first time stamp associated with the first data, acquiring a second data received before the first data and a second time stamp associated with the second data, performing linear interpolation on the basis of the first time stamp, a value of the first data, the second time stamp, and a value of the second data, to acquire values of data at set time stamps requested by the sensor system, and outputting the values of data associated with the respective set time stamps to another device involved in the sensor system.
There is provided an optical transmission system including a connection device 1 and a control device 2. The connection device 1 includes a fixed number of measurement devices 12 that measure a quality of a transmission line between a user terminal 3 and the connection device, a notification device 13 that notifies the user terminal of busy information, and a switching device 11 that switches a connection destination of the user terminal 3 to any one of: one of the fixed number of the measurement devices 12; the notification device 13; and the optical transmission network. The control device 2 includes a control unit 21 that controls the switching device 11. The control unit 21 detects a connection request from the user terminal 3, and in a case where a measurement device 12 of the fixed number of measurement devices 12 is available, connects the user terminal 3 to the available measurement device 12, in a case where none of the fixed number of measurement devices 12 is available, temporarily connects the user terminal 3 to the notification device 13, and when a measurement device of the fixed number of measurement devices has become available, connects the user terminal 3 to the available measurement device 12, and after the quality of the transmission line is measured by the connected measurement device 12, connects the user terminal 3 to the optical transmission network.
H04B 10/073 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an out-of-service signal
H04B 10/077 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
23.
RADIO COMMUNICATION SYSTEM, CONTROL APPARATUS, CONTROL METHOD, AND PROGRAM
In order to suppress degradation of communication quality due to radio interference or the like, or occurrence of extra operating power consumption or the like of a wireless base station when the number of the wireless terminals in the wireless area is smaller than expected, a radio communication system includes a plurality of wireless base stations installed in a wireless area, and includes: a calculation unit configured to calculate an operating state pattern of the plurality of wireless base stations according to a state of a wireless terminal in the wireless area; an acquisition unit configured to acquire a state of the wireless terminal in the wireless area; and a control unit configured to control, on the basis of the operating state pattern, an operating state of the plurality of wireless base stations according to the state of the wireless terminal acquired by the acquisition unit.
An object of the present disclosure is to suppress the manufacturing cost of a circuit breaker of a power feeding system and to achieve a relatively small size.
An object of the present disclosure is to suppress the manufacturing cost of a circuit breaker of a power feeding system and to achieve a relatively small size.
Therefore, the present disclosure provides a power feeding system including a first circuit breaker, a second circuit breaker, and a control terminal that remotely controls the first circuit breaker and the second circuit breaker, wherein the control terminal transmits an opening signal indicating opening of the first circuit breaker to the first circuit breaker and the second circuit breaker, the first circuit breaker waits for a lapse of a first time on the basis of the opening signal, the second circuit breaker changes a setting to suppress an opening operation of the second circuit breaker during the first time on the basis of the opening signal and waits for a lapse of a second time, the first circuit breaker opens an electric path of the first circuit breaker during the second time, and the second circuit breaker restores the changed setting after the second time elapses.
A terminal apparatus (20) according to an embodiment of the present disclosure includes a data processing unit (201) and a wireless signal processing unit (202). The data processing unit (201) generates a first frame including a requirement related to a latency during data communication and inquiring a base station (10) whether communication that satisfies the requirement is possible. The wireless signal processing unit (202) transmits the first frame.
A data processing device includes a processing unit. A processing unit selects an input value included in an input domain of a processing LUT from among a plurality of the input values that are values of inputs, selects only an approximation coefficient of a piece necessary for an operation from a total coefficient storage unit, stores the selected approximation coefficient in the processing LUT, outputs an approximation coefficient corresponding to the selected input value from the processing LUT, and performs polynomial approximation operation by using the selected input value and the output approximation coefficient.
An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.
H04B 10/077 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
The present disclosure includes a remote rendering system, an image processing method, a server device, and a program The remote rendering system includes a terminal having a sensor, and a server, the terminal transmitting information about a sensor state to the server, and the server transmitting a rendered image corresponding to the sensor state to the terminal. The terminal transmits information about the current sensor state to the server, and the server predicts a plurality of possibilities of the sensor state to be expected in an immediate future based on the received information about the current sensor state. The server performs rendering corresponding to the predicted possibilities of the sensor state, and stores a plurality of the rendered images generated by the rendering.
An object of the present invention is to provide a light modulation device capable of preventing deformation of an optical modulation element due to warpage of a TEC. The light modulation device of the present invention includes an optical modulation element that is flip-chip connected on a high-frequency wiring substrate, a temperature controller that controls a temperature of the optical modulation element, a heat spreader that is connected to the temperature controller, and a deformable adhesive layer that connects the temperature controller and the optical modulation element on a surface different from the heat spreader and is deformable in response to stress caused by deformation of the temperature controller
A rust removing laser device includes a laser that outputs a first laser beam for rust removal, a LiDAR device that outputs a second laser beam for distance measurement and calculates a distance to an object on the basis of return beam, a laser emission head that irradiates an object with the first and second laser beams and returns reflection beam of the second laser beam from the object to the LiDAR device, and a controller that outputs the first laser beam from the laser when a distance to the object is included in a predetermined distance range, and stops the output of the first laser beam when the distance to the object is not included in the distance range.
An embodiment is a biosignal measurement system including two electrode devices, a biosignal generation device, and a right-leg drive device. Each electrode device has a first electrode, a non-inverting amplification circuit, a quantization circuit, a first wireless transmitter, an FM transmitter, an FM receiver, an adjustment circuit, and a power supply. The biosignal generation device has a first wireless receiver, an arithmetic circuit, a midpoint potential calculation circuit, and a second wireless transmitter. The right-leg drive device has a second wireless receiver, an amplifier circuit, and a second electrode. The electrode devices measure and process biopotentials, transmitting information wirelessly and via FM signals. The biosignal generation device receives this information, generates waveforms, calculates midpoint potentials, and transmits them to the right-leg drive device, which applies the amplified potential to the body.
A wireless communication system includes a first base station, a second base station, a terminal connectable to both the first base station and the second base station, and a wireless communication device that is connected to both the first base station and the second base station and controls the coverage of the second base station. The coverage of the second base station is superimposed on the coverage of the first base station and is smaller than the coverage of the first base station. The terminal detects a user's action, acquires information regarding a predetermined user's action performed on the host terminal, and estimates position information of the host terminal. The wireless communication device determines the coverage of the second base station, based on the information regarding the user's action and the position information acquired from the terminal via the first base station or the second base station.
An inspection pattern capable of performing wafer-level automatic inspection using a cantilever-type probe card is provided. An inspection pattern according to one embodiment of the present disclosure includes: a Cu pillar pad formed on a semiconductor substrate; a Cu pillar formed on the Cu pillar pad; and an inspection pad formed on the semiconductor substrate, electrically coupled adjacent to or proximate to the Cu pillar pad, and configured to provide a region that a cantilever-type probe comes in contact with during wafer-level automatic inspection.
H01L 21/66 - Testing or measuring during manufacture or treatment
G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference
G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
H01L 23/00 - Details of semiconductor or other solid state devices
34.
BATTERY PACK FOR AN ELECTRIC-POWERED ROAD VEHICLE AND ELECTRIC-POWERED ROAD VEHICLE PROVIDED WITH SUCH A BATTERY PACK
Battery pack for a road vehicle with electric propulsion; wherein the battery pack comprises: a plurality of planar electrochemical cells arranged in pack along an axis A; and a support structure that comprises two plates opposite along the axis and parallel to the cells. The two plates define the housing volume for the cells. The cells at the beginning of life are housed in the support structure with an initial preload along the axis that generates a corresponding initial axial stress acting on the plates. Each cell comprises two flat faces orthogonal to the axis A and a thickness along the axis A that gradually increases over the life of the battery pack. The plates are configured to move away from each other along the axis A such that an increase in cell thickness does not result in a corresponding progressive increase in the axial stress acting on the plates.
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
B60K 1/04 - Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
H01M 50/211 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
35.
OPTICAL POWER DISTRIBUTION ESTIMATION APPARATUS, OPTICAL POWER DISTRIBUTION ESTIMATION METHOD, AND COMPUTER PROGRAM
An optical power distribution estimation device including: a coherent receiver that receives a signal transmitted from an optical transmission device via an optical transmission line; and an optical power distribution estimation unit that estimates an optical power distribution on a basis of at least a signal obtained by compensating for or applying a characteristic of an optical reception device to a reception signal received by the coherent receiver or a signal transmitted from the optical transmission device restored on a basis of the reception signal.
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
An arithmetic processing device includes: an arithmetic unit configured to execute an arithmetic operation corresponding to each of layers constituting a neural network and output an arithmetic operation result; an analysis unit configured to perform, for each of division units obtained by dividing the arithmetic operation result by one or more units, an analysis according to the arithmetic operation result belonging to the division unit, and output an analysis result for each division unit; a decimal point position determination unit configured to determine a decimal point position indicating a dynamic range for each division unit on the basis of the analysis result for each division unit output by the analysis unit; and a quantization unit configured to perform quantization on the arithmetic operation result to become fixed-point data having a decimal point position determined for the division unit to which the arithmetic operation result belongs.
An embodiment is a method for designing a diffractive element which phase-modulates incident light including determining an electric field distribution on an emission plane with respect to a spherical wave condensed in a range between a first distance and a second distance from the emission plane, calculating a first electric field distribution as the electric field distribution on the emission plane by multiplying Exp[−jkz cos φB] by the electric field distribution for the spherical wave and integrating over the range, where z is a coordinate on a straight line, k is the wave number of emitted light, and φB is a convergence angle between the emitted light and the straight line, and determining a depth of an unevenness on a surface of the diffractive element based on the calculated electric field distribution.
A determination unit (33) determines a processing mode for minimizing a usage amount of an external memory band for each layer of a CNN among processing modes that are based on a sliding method in a case in which entire input data is processed by causing the plurality of convolution calculators to perform batch processing on a processing range in the input data that is input to each layer of the CNN by sliding the processing range, the processing modes including a first mode in which the input data is fixed and a kernel is slid, a second mode in which output data is fixed and the input data and the kernel are slid in a channel direction, and a third mode in which the kernel is fixed and the input data are slid in the vertical and horizontal directions. The setting unit (34) sets the determined processing mode in a calculation unit 35. The calculation unit (35) performs convolution calculation on the input data based on the set processing mode.
A performance model construction apparatus according to an aspect of the present disclosure is a performance model construction apparatus that constructs a performance model of each base station constituting a cellular network, the apparatus including an input unit configured to input an accommodated user number observation value representing an observation value of the number of accommodated users of each base station and a performance observation value representing an observation value of predetermined performance related to the base station when the accommodated user number observation value is observed, and a construction unit configured to construct a performance model representing a relationship between the number of accommodated users and the performance using the accommodated user number observation value, the performance observation value, and the number of observations of the accommodated user number observation value and the performance observation value.
An information collection apparatus includes: a first acquisition unit configured to specify trusted nodes trusted by a certain node based on a condition, set for each of a plurality of nodes constituting a network, that the node trusts another node, and acquire conditions of each of the trusted nodes; and a second acquisition unit configured to acquire information regarding a certain target from a node specified based on the conditions acquired by the first acquisition unit, thereby increasing a likelihood of collecting highly reliable information.
A signal transfer system that transfers a signal from one communication device to another communication device includes: an information acquisition unit that acquires network transfer information that is information regarding a traffic flow from the one communication device for each traffic flow from the one communication device to the another communication device; and a communication control unit that executes adjustment processing of controlling transmission of a frame in the one communication device so as to reduce a waiting time for the frame on a basis of the network transfer information acquired by the information acquisition unit.
A channel in which an utterance of a keyword is included is selected from acoustic signals of multiple channels. An addition unit 11 adds all channels of input voice signals of multiple channels to generate a composite voice signal of one channel. A keyword detection unit 12 generates a keyword detection result indicating a result of detecting an utterance of a predetermined keyword from a composite voice signal. A power calculation unit 13 calculates powers of channels based on input voice signals. A delay unit 14 delays the powers of the channels. When the keyword detection result indicates that the keyword was detected, a maximum power detection unit 15 selects, as an output channel, a channel having the maximum power among the powers of the channels of the input voice signals. A channel selection unit 16 selects the voice signal of the output channel from the input voice signals and outputs the selected voice signal.
A control method executed by a control apparatus that determines a relief antenna for relieving communication in a failure area and a tilt of the relief antenna, the control method including acquiring an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with a policy function, and selecting the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied, and calculating tilts of the relief antennas selected in the selecting of the relief antennas.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
An optical waveguide of the present disclosure proposes a configuration of a bent waveguide having a novel configuration. For proposed four types of curves A, B, C, and D, a value obtained by differentiating a curvature along a waveguide is 0 at one end 1=0 and the other end 1=L of a bent waveguide. It is possible to suppress optical loss and inter-mode crosstalk occurring in the bent waveguide. Even in a bent waveguide having a waveguide width under a multimode condition, excellent inter-mode crosstalk characteristics and low loss are achieved as compared with the clothoid curve of the prior art.
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
45.
LEARNING DEVICE, LEARNING METHOD, AND LEARNING PROGRAM
A learning device includes processing circuitry configured to extract an encoding feature having a time series direction on a basis of input data of one or both of monomodal data that is data of a single modal or multimodal pair data including a plurality of different modals, embed segment information that is information for identifying a type of the modal of the input data in the encoding feature on a basis of a predetermined condition, connect, on a basis of input condition of a segment-embedded feature in which the segment information is embedded, a plurality of segment-embedded features in the time series direction as a modal-connected feature, and calculate a model parameter using an estimated vector of a cross-modal task estimated on a basis of one or both of the segment-embedded feature or the modal-connected feature and correct data.
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/62 - Extraction of image or video features relating to a temporal dimension, e.g. time-based feature extractionPattern tracking
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
An information processing apparatus includes processing circuitry configured to extract an image feature from a character image, and estimate a character string from a writing direction and the image feature.
A technology of accurately coding and decoding coefficients which are convertible into linear prediction coefficients even for a frame in which the spectrum variation is great while suppressing an increase in the code amount as a whole is provided. A coding device includes: a first coding unit that obtains a first code by coding coefficients which are convertible into linear prediction coefficients of more than one order; and a second coding unit that obtains a second code by coding at least quantization errors of the first coding unit if (A−1) an index Q commensurate with how high the peak-to-valley height of a spectral envelope is, the spectral envelope corresponding to the coefficients which are convertible into the linear prediction coefficients of more than one order, is larger than or equal to a predetermined threshold value Th1 and/or (B−1) an index Q′ commensurate with how short the peak-to-valley height of the spectral envelope is, is smaller than or equal to a predetermined threshold value Th1′.
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/038 - Vector quantisation, e.g. TwinVQ audio
G10L 19/06 - Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
G10L 19/24 - Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
A mixer includes a transistor to which an IF signal of ae positive phase side is input, a transistor to which an IF signal of a negative phase side is input, a transistor to which an LO signal is input, and a synthesizer which synthesizes components of a RF frequency band output from the drain terminals of the transistors in a negative phase, and synthesizes components of an IF frequency band output from the drain terminals of the transistors in the same phase.
H03D 7/12 - Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
49.
SIGNAL PROCESSING RESOURCE SWITCHING DEVICE, SIGNAL PROCESSING RESOURCE SWITCHING SYSTEM, SIGNAL PROCESSING RESOURCE SWITCHING METHOD AND PROGRAM
A signal processing resource switching device includes a function proxy execution unit configured to accept a “function name⋅argument” from an application unit and notify the application of argument data of a function when the function is executed or ended by a calculation resource, an accelerator failure detection unit configured to detect a failure of an accelerator, and an offload destination calculation resource determination unit configured to determine an unfailed and available resource among the calculation resources, and the function proxy execution unit performs offloading on the resource determined by the offload destination calculation resource determination unit.
G06F 11/20 - Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
G06F 9/48 - Program initiatingProgram switching, e.g. by interrupt
An embodiment is a slot-coupling type coupler for connecting a high-frequency circuit to a waveguide tube. The coupler includes a substrate, at least a part of the substrate being inserted into the waveguide tube, and a conductor patch on the substrate and configured to emit a high-frequency wave generated by the high-frequency circuit into the waveguide tube. The conductor patch comprises a first conductor patch on a first side of the substrate and includes a complementary metamaterial cell including one or more conductor portions forming one or more gaps.
A prediction device includes: a store visit number prediction unit that acquires data regarding the number of past visits to a store, inputs the data to a trained store visit number prediction model, and predicts the number of visits to a store on a prediction target day by using an output from the store visit number prediction model; a rate prediction unit that acquires data regarding the number of past visits to a store, a past sales volume until a designated time of the prediction target day, and a sales time feature of the prediction target day, and predicts a sales rate of each product; and a sales volume prediction unit that predicts a sales volume of each product on the prediction target day by using the number of visits to a store predicted by the store visit number prediction unit and the sales rate of each product predicted by the rate prediction unit.
According to an aspect of the present disclosure, a ring signature system includes: a plurality of member terminals belonging to a ring signature group; and a verifier terminal that verifies a ring signature. Each of the member terminals includes a key generation unit configured to generate a public key and a secret key of lattice-based cryptography as a verification key and a signature key, respectively, and a signature generation unit configured to generate a signature for a message by a linkable ring signature to which a Schnorr signature is applied using the signature key of the member terminal and verification keys of the other member terminals. The verifier terminal includes a verification unit configured to verify the signature using a verification key of the member terminal and the message.
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
H04L 9/30 - Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
53.
SIGNATURE SYSTEM, TERMINAL, EXISTENCE CONFIRMATION METHOD, AND PROGRAM
In a signature system,
In a signature system,
a transmitting terminal having transmitted information requests a signature terminal that trusts the transmitting terminal to provide a signature for the information,
In a signature system,
a transmitting terminal having transmitted information requests a signature terminal that trusts the transmitting terminal to provide a signature for the information,
the signature terminal generates the signature for the information, and
In a signature system,
a transmitting terminal having transmitted information requests a signature terminal that trusts the transmitting terminal to provide a signature for the information,
the signature terminal generates the signature for the information, and
in order to confirm that the information existed at a certain point in time, a verification terminal acquires the signature and verifies the signature.
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
54.
TRANSMISSION-RECEPTION-CORRESPONDENCE DETERMINATION APPARATUS, TRANSMISSION-RECEPTION-CORRESPONDENCE DETERMINATION METHOD AND PROGRAM
A transmission-reception-correspondence determination system includes: a processor, and a memory storing program instructions that cause the processor to: record information indicating a relationship between a location of a moving device and time; record identifiers of pieces of information transmitted from the device in association with transmission times of the pieces of information; record an identifier of information transmitted from the device and data observed regarding the information in an apparatus that has received the information via a network in association with each other; and determine that a transmission time associated with an identifier that is same as the recorded identifier among the identifiers of the pieces of information and a location of the device at the transmission time correspond to the data associated with the recorded identifier.
A plurality of IDs are presented by chipless RFID using an object shape as an ID. Provided is an ID tag for arranging in a row a plurality of elements selected from: a first element having a peak of a reflection intensity in a first direction and a second direction; a second element having the peak of the reflection intensity in the first direction and having no peak of the reflection intensity in the second direction; a third element having the peak of the reflection intensity in the second direction and having no peak of the reflection intensity in the first direction; and a fourth element having no peak of the reflection intensity in the first direction and the second direction.
G01S 13/75 - Systems using reradiation of radio waves, e.g. secondary radar systemsAnalogous systems using transponders powered from received waves, e.g. using passive transponders
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
56.
WIRELESS TERMINAL APPARATUS AND WIRELESS COMMUNICATION METHOD
A wireless terminal apparatus includes a plurality of wireless units, a determination unit, a search unit, and a handover unit. The plurality of wireless units wirelessly communicate with a first access point by multi-link which wirelessly connects through a plurality of links. The determination unit determines whether or not there is a quality degradation link having an index value based on reception power smaller than a first threshold among links included in the multi-link. When there is the quality degradation link, the search unit searches for a second access point connectable by the multi-link and capable of handover, by using a search link selected from links included in the multi-link. When there is the second access point, the handover unit switches the connection destination of the search link from the first access point to the second access point.
H04W 36/28 - Reselection being triggered by specific parameters by agreed or negotiated communication parameters involving a plurality of connections, e.g. multi-call or multi-bearer connections
57.
DISTRIBUTED PROCESSING SYSTEM, DISTRIBUTED PROCESSING METHOD, AND PROGRAM
A distributed processing system (100) includes at least one master node (10) and a plurality of worker nodes (30) including operation resources for executing processing according to an instruction of the master node. The master node includes a device information collection unit (13) that collects device information of each of the worker nodes, a device information transmission unit (15) that transmits to at least one of the plurality of worker nodes device information of the other worker nodes and a processing distribution unit (17) that distributes processing to at least one of the plurality of worker nodes. The worker node includes a processing execution unit (60) that executes the processing distributed from the master node, and a processing sharing request unit (36) that requests at least one of the other worker nodes including the same type of an operation resource (a protection region (61), a FPGA (62), or the like) to share the processing based on the device information of the other worker nodes when the processing distributed from the master node is excessively increased.
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
58.
INTERIOR-LAYOUT ASSISTANCE METHOD, INTERIOR-LAYOUT ASSISTANCE SYSTEM, AND PROGRAM
An interior-layout assistance method that is useful in considering a layout of products in an interior. A first step of acquiring or generating 3D CAD data of an interior, a second step of designating, by a user, a classification of and a budget for a product being an at least one of furniture and a home appliance to be arranged in the interior, a step of determining arrangement candidates that are presented as different combinations of a space in which the product can be arranged among spaces in the interior and a product to be arranged in the space, the determining of the arrangement candidates performed on a basis of the 3D CAD data acquired or generated in the first step and the classification and budget for the product, the classification and the budget being designated in the second step, and a step of displaying a 3D CAD image.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
A control device in a communication system in which one-way communication and round-trip communication coexist, the control device includes: a request delay acquisition unit that, based on cooperation information obtained from traffic transmitted from a plurality of wireless terminals and indicating a communication state between the plurality of wireless terminals and a base station that performs wireless communication, acquires information regarding a request delay and information regarding a priority in the traffic for each piece of the traffic; a traffic-based congestion calculation unit that calculates a congestion delay in a wired section on the basis of the information regarding the request delay and the information regarding the priority acquired for each piece of the traffic by the request delay acquisition unit; and a priority change control unit that, in a case where congestion occurs or a total delay requirement is not satisfied on the basis of the congestion delay in the wired section calculated by the traffic-based congestion calculation unit, transmits, to a relay device that relays the traffic, a control signal including an instruction to change at least a priority of traffic of the round-trip communication such that the traffic of the one-way communication is preferentially transmitted.
A transfer function estimation device includes a composite transfer function calculation unit that calculates a composite transfer function which is obtained by combining a transmission transfer function that affects a signal transmitted by an optical transmitter and a reception transfer function that affects a signal received by an optical receiver in each of frequency offsets that are differences between a frequency of a carrier wave input to an optical modulation unit in the optical transmitter and a frequency of a carrier wave input to an optical demodulation unit in the optical receiver based on a signal transmitted by the optical transmitter and a signal received by the optical receiver, and a transfer function separation unit that calculates the transmission transfer function and the reception transfer function from the composite transfer function based on dependency of the composite transfer function on the frequency offset.
H04B 10/073 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an out-of-service signal
The transmission station according to an embodiment includes a wireless signal processing unit and a management unit. The management unit establishes a plurality of links between the wireless signal processing unit and a reception station using the wireless signal processing unit, and enables the wireless signal processing unit to transmit data to the reception station through only arbitrary one of the plurality of links at the same timing. In a case where target data to be transmitted is transmitted to the reception station through a target link that is arbitrary one of a plurality of links, the management unit sets a transmission standby time for the target data on the basis of the number of transmission failures of the target data through the target link.
An inference processing device includes: a division unit that divides a layer of a convolutional neural network into a plurality of sublayers in a channel direction; a convolution unit that executes convolution processing for each of the sublayers to output a convolution result; an addition unit that adds an intermediate value obtained by cumulatively adding convolution results up to a previous sublayer to the convolution result with an adder for adding a bias to the convolution result every time the convolution processing is executed, and outputs an addition result; and an activation unit that inputs, to an activation function, the addition result obtained by adding the convolution result of a last sublayer on which the convolution processing has been executed last.
A signal processing aggregation device which switches an offload destination accelerator when offloading specific processing of an application to an accelerator for calculation processing includes: an accelerator offload part which performs offloading on the installed accelerator or the accelerator on a remote server side on the basis of a set offload destination; and an accelerator remote offload part which serializes offload data to the accelerator on the remote server side, packetizes it in a predetermined format, and transmits it as packetized data.
A data acquisitor of a monitoring device acquires a power value of a range including an entire wavelength of a target channel and acquires power values of ranges including parts of the wavelength of the target channel, from an optical channel monitor that measures power values of optical signals output from nodes. A determinator compares each of the power values with threshold values based on power values of the nodes in a steady state and determines abnormality in the nodes
H04B 10/079 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
H04J 14/02 - Wavelength-division multiplex systems
A transmission station includes a first transmission unit, a second transmission unit, and a management unit. The management unit is configured establish, with a reception station, a multilink in which first channel is allocated to the first transmission unit and a second channel is allocated to the second transmission unit. The second transmission unit is configured to start carrier sense processing regarding second data during an occupancy period in which the first transmission unit transmits first data, and transmit the second data subsequent to the first data in a case where a transmission right is acquired by the carrier sense processing.
The present disclosure is a system including a multi-core optical fiber that connects a plurality of devices, in which communication light is transmitted by using at least one core of a plurality of cores included in the multi-core optical fiber, power feeding light is transmitted by using at least one core of the plurality of cores included in the multi-core optical fiber, the core that transmits the power feeding light and the core that transmits the communication light, in the multi-core optical fiber, are different, and the multi-core optical fiber transmits the communication light and the power feeding light in a single mode or a pseudo single mode.
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
Provided is a signal processing device including: a batch adaptive equalization unit configured to use a first adaptive filter to perform an equalization process of waveform distortion on each polarized digital signal obtained by performing analog-to-digital conversion on a polarization-multiplexed signal; a matrix conversion unit configured to acquire filter coefficients of the first adaptive filter from at least the batch adaptive equalization unit, and convert acquired the filter coefficients through matrix operation; a degree-of-freedom separation adaptive equalization unit configured to use a second adaptive filter including the filter coefficients converted by the matrix conversion unit to perform an equalization process of waveform distortion due to polarization state fluctuation in a transmission path on each polarized digital signal; and a switching control unit configured to select a signal equalized by the batch adaptive equalization unit or the degree-of-freedom separation adaptive equalization unit as a reception signal.
An embodiment is a beamformer for directing an incident electromagnetic wave, including a first conductive metamaterial cell configured to shift a phase of a first portion of the electromagnetic wave, a second conductive metamaterial cell located adjacent to the first conductive metamaterial cell, having a different geometry than the first conductive metamaterial cell, and configured to shift a phase of a second portion of the electromagnetic wave, a conductor including at least a portion disposed between the first conductive metamaterial cell and the second conductive metamaterial cell.
H01Q 3/36 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means with variable phase-shifters
This edible conductive structure includes a conductive layer including an edible conductive material and a hydrophobic layer including an edible hydrophobic material. The conductive layer and the hydrophobic layer are alternately stacked. The lowermost layer and the uppermost layer (surface layer) can be the hydrophobic layer. The conductive material can be, for example, an edible metal foil such as gold foil or silver foil. The hydrophobic material can be composed of, for example, an organogel obtained by mixing beeswax and olive oil.
A61B 5/1473 - Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value using chemical or electrochemical methods, e.g. by polarographic means invasive, e.g. introduced into the body by a catheter
A multiplexer includes an impedance converter. The impedance converter includes: a transmission line having a length of λ/4 (λ is an in-transmission-line wavelength of a signal) and a characteristic impedance of 35Ω; and a transmission line having a length of λ/4 and a characteristic impedance of 70Ω. The impedance converter includes: a transmission line having a length of λ/4 and a characteristic impedance of 35Ω; and a transmission line having a length of λ/4 and a characteristic impedance of 70Ω.
A wireless communication system according to one embodiment includes: a weather radar antenna that is provided in the wireless station and receives a weather radar signal transmitted from the wireless station toward the node station and reflected; rainfall amount prediction circuitry configured to predict a rainfall amount between the wireless station and the node station on the basis of the weather radar signal received; quality prediction circuitry configured to predict quality of wireless communication between the wireless station and the node station on the basis of the rainfall amount predicted; and switching control circuitry configured to perform control to switch a line connecting the node station and the wireless station to another line connecting the node station and another communication station before interruption of the line in a case where the quality of the wireless communication predicted is less than a predetermined threshold.
A photodetector of the present invention includes: a photodiode; and a protection diode. The photodiode and the protection diode are integrated on a same semiconductor substrate. The photodiode includes a semiconductor portion made of at least one type of semiconductor material, an anode electrode, and a cathode electrode. The protection diode includes a core layer, a semiconductor portion provided in the core layer and including a first-type semiconductor region doped with first-type impurity ions and a second-type semiconductor region doped with second-type impurity ions, an anode electrode, and a cathode electrode. The semiconductor portion of the protection diode includes only one type of semiconductor material used for the semiconductor portion of the photodiode. The anode electrodes of the protection diode and the photodiode are connected to each other. The cathode electrodes of the protection diode and the photodiode are connected to each other.
H10F 30/222 - Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation the devices having only one potential barrier, e.g. photodiodes the potential barrier being a PN heterojunction
73.
ACCESS POINT, DATA RECEIVING METHOD AND DATA RECEIVING PROGRAM
An access point of an embodiment includes a wireless signal processing unit and a management unit. The management unit sets a first service period for providing a first traffic transmission opportunity to the first wireless terminal apparatus in a first cycle and a second service period for providing a second traffic transmission opportunity to the second wireless terminal apparatus in a second cycle. The management unit manages a first transmission priority based on a delay requirement condition of the first traffic and a second transmission priority based on a delay requirement condition of the second traffic. In a case of detecting a conflict between the first and second service periods is detected and confirming that the first transmission priority is higher than the second transmission priority, the management unit notifies the second wireless terminal apparatus of a change in a configuration related to the second service period.
A diskless client authentication system (10) includes an authentication server (100) and a filter (230) on a communication path between the diskless client (280) and a file server (200) storing a startup file. An authentication server (100) includes: an address assignment unit that assigns a network address to a diskless client (280); an authenticating unit that authenticates the diskless client (280) to which the network address has been assigned; and a client control unit that instructs the authentication unit to authenticate the diskless client (280) when the diskless client (280) to which the network address has been assigned is in an unauthenticated state, and instructs the authentication unit to permit communication between the diskless client (280) and a file server (200) when the authentication is successful.
One or more input values are received, when one of a value L and a value H is input to each input value, an i-th input value in a learning phase is represented as xi, and an i-th input value in an inference phase is represented as yi, wi is assigned to the i-th input value, one of the value L and the value H is set to the value wi, in the learning phase, the value wi of a weight assigned to the i-th input value is set to the value of xi, and in the inference phase, values of the number of inputs in which the value of xi is H, the number of inputs in which both wi and yi are H, and the number of inputs in which the value of yi is H are calculated, and a value obtained by dividing the number of inputs in which both wi and yi are the value H by a value obtained by adding the number of inputs in which yi is the value H to the number of inputs in which the value of wi is the value H is calculated as similarity representing the degree of similarity.
A coding method and a decoding method are provided which can use in combination a predictive coding and decoding method which is a coding and decoding method that can accurately express coefficients which are convertible into linear prediction coefficients with a small code amount and a coding and decoding method that can obtain correctly, by decoding, coefficients which are convertible into linear prediction coefficients of the present frame if a linear prediction coefficient code of the present frame is correctly input to a decoding device. A coding device includes: a predictive coding unit that obtains a first code by coding a differential vector formed of differentials between a vector of coefficients which are convertible into linear prediction coefficients of more than one order of the present frame and a prediction vector containing at least a predicted vector from a past frame, and obtains a quantization differential vector corresponding to the first code; and a non-predictive coding unit that generates a second code by coding a correction vector which is formed of differentials between the vector of the coefficients which are convertible into the linear prediction coefficients of more than one order of the present frame and the quantization differential vector or formed of some of elements of the differentials.
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/005 - Correction of errors induced by the transmission channel, if related to the coding algorithm
G10L 19/038 - Vector quantisation, e.g. TwinVQ audio
77.
SAMPLE INTERVAL SYNCHRONOUS POSITION NOTIFICATION DEVICE, OPTICAL RECEIVER AND SAMPLE INTERVAL SYNCHRONOUS POSITION NOTIFICATION METHOD
A sample interval synchronized position notification device includes: a tap coefficient acquisition unit configured to acquire a tap coefficient from an adaptive equalization unit which is configured to perform adaptive equalization of a signal; a group delay calculation unit configured to calculate a group delay based on the tap coefficient; and a shift amount calculation unit configured to calculate a shift amount based on the group delay.
A photo detector includes a first cladding layer, a first semiconductor layer of a first conductivity type on the first cladding layer, a light absorption layer on the first semiconductor layer, a second semiconductor layer of a second conductivity type on the light absorption layer, a second cladding layer on the first semiconductor layer, the second cladding layer covering the light absorption layer and the second semiconductor layer, and a plurality of columnar vias penetrating the second cladding layer and connected with the second semiconductor layer, where the plurality of columnar vias are arranged in an arrangement direction parallel to a surface of the first semiconductor layer on which the light absorption layer is disposed, and a coverage factor in plan view of each of the plurality of columnar vias decreases from a first end side to a second end side in the arrangement direction of the light absorption layer.
H10F 30/223 - Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation the devices having only one potential barrier, e.g. photodiodes the potential barrier being a PIN barrier
A wavelength-tunable laser includes a substrate, a waveguide layer over the substrate, and a cladding over the waveguide layer. The wavelength-tunable laser further includes an active layer in a part of the waveguide layer, and a tunable wavelength filter in at least one end region of the waveguide layer in a direction along which light is to be guided.
H01S 5/0625 - Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
H01S 5/343 - Structure or shape of the active regionMaterials 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
With a structure in which an ion implantation pattern can be controlled with a wider range of options, optical modulation efficiency is enhanced. An optical modulator including a semiconductor layer with a pn junction in an optical waveguide core. The optical modulator includes: a low-concentration p-type semiconductor layer and a low-concentration n-type semiconductor layer that form the pn junction; and a medium-concentration p-type semiconductor layer that is added to the low-concentration p-type semiconductor layer or a medium-concentration n-type semiconductor layer that is added to the low-concentration n-type semiconductor layer. The optical waveguide core configured with three layers of the low-concentration p-type semiconductor layer, the medium-concentration p-type semiconductor layer, and the low-concentration n-type semiconductor layer, or configured with three layers of the low-concentration p-type semiconductor layer, the medium-concentration n-type semiconductor layer, and the low-concentration n-type semiconductor layer.
G02F 1/025 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
G02F 1/225 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
A light source includes a mode-locked laser; a beam splitter that branches the femtosecond optical pulse train; a CW solid-state laser; a first beam combiner that outputs one side of the femtosecond optical pulse train on the same axis; a secondary nonlinear optical element that outputs a difference frequency generation and conversion optical pulse train from either a continuous wave or a femtosecond optical pulse train; an amplifier that amplifies the difference frequency generation and conversion optical pulse train; a polarization-maintaining all normal dispersion high nonlinear fiber that converts the other femtosecond optical pulse train into a supercontinuum optical pulse train; a first dispersion medium that converts the supercontinuum optical pulse train into a pulse width that is approximately the same as the difference frequency generation and conversion optical pulse train; and a second beam combiner that multiplexes and outputs the difference frequency generation and conversion optical pulse train and the supercontinuum optical pulse train.
H01S 3/108 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
H01S 3/30 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
82.
GLOBAL SOLAR RADIATION AMOUNT ESTIMATION DEVICE, GLOBAL SOLAR RADIATION AMOUNT LEARNING DEVICE, GLOBAL SOLAR RADIATION AMOUNT ESTIMATION METHOD, AND GLOBAL SOLAR RADIATION AMOUNT ESTIMATION PROGRAM
A global solar radiation amount estimation device includes: a feature amount acquisition unit that acquires power generation actual data including a power generation amount at a power generation point; and an estimation unit that estimates a global solar radiation amount corresponding to the power generation actual data acquired by the feature amount acquisition unit using a learned model that is generated by machine learning, as learning data, a set of the power generation actual data prepared in advance and a corresponding global solar radiation amount of ground observation, receives the power generation actual data as an input, and outputs the global solar radiation amount.
An aspect of the present invention is a condition analysis device including an acquisition unit that acquires rank information obtained by ranking a degree of self-support or magnitude of disorder of a patient and biometric information of the patient, a derivation unit that derives, for each rank, range information indicating a range in which the biometric information is distributed, and a superimposition display unit that displays the range information as an image for each rank, and superimposes and displays a predetermined image on the image at a position corresponding to the biometric information of one patient in a range indicated by the image.
An attack detection device detects a cyber attack in a mobile network that includes a RAN including RAN communication devices that perform wireless communication with a user terminal. The attack detection device includes an information integration unit and an attack detection unit. The information integration unit acquires pieces of resource information of the RAN communication devices and integrates the pieces of resource information. The attack detection unit detects the cyber attack based on the integrated pieces of resource information.
A secret noise generation system according to one aspect of the present disclosure includes: a first terminal; and one or more second terminals, wherein the first terminal includes a transmission unit configured to transmit a first table having secret values as elements to each of the second terminals, and each of the second terminals includes a noise calculation unit configured to calculate a sum of n secret values selected from the first table as a secret noise by using secure computation that allows addition of secret values, where n is an integer not less than 2.
Optical transmission property estimation device comprising:
a transmission waveform restoration unit configured to restore a transmission signal from a reception signal obtained by receiving an optical signal by a coherent detection system; and
an estimation unit configured to estimate an optical power distribution in a transmission line by estimating a nonlinear coefficient in a propagation equation of a light wave by a linear least square method based on the restored transmission signal and the reception signal.
H04B 10/075 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal
An optical semiconductor integrated circuit of the present disclosure realizes efficient wafer level testing by including electrical input/output terminals disposed around a chip and optical input/output terminals in the periphery in which electrical input/output terminals are not disposed. The optical semiconductor integrated circuit chip includes a plurality of electrical input/output terminals in at least one peripheral portion of a chip region. The electrical input/output terminals may be disposed in a U shape around the three sides. The optical semiconductor integrated circuit chip further includes an optical input/output terminal on one side on which an electrical input/output terminal is not disposed. The optical input/output terminal may be a grating coupler formed on a substrate.
G01R 31/311 - Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of integrated circuits
G02F 1/21 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour by interference
A blade inspection system includes: a transmitter of electromagnetic waves mounted in a first unmanned aerial vehicle (UAV); a receiver of electromagnetic waves mounted in a second UAV; at least one processor communicably coupled to the transmitter and the receiver; and a memory storing instructions executable by the at least one processor. The instructions causes the at least one processor to execute: emitting electromagnetic waves from the transmitter to the rotating surfaces of the blades of a wind power plant in a state where the first UAV and the second UAV face each other with the blades sandwiched therebetween; receiving, by the receiver, at least one of a reflected wave and a diffracted wave generated by the blades due to the emission of the electromagnetic waves from the transmitter; and determining whether there is an abnormality in the blades through analysis of the reflected wave or the diffracted wave.
An access point of an embodiment includes a plurality of wireless signal processing units and a management unit. The management unit establishes a plurality of links with a terminal by using the wireless signal processing units, and causes each of the wireless signal processing units to transmit a first wireless signal to the terminal. When one of the wireless signal processing units receives a second wireless signal transmission of the first wireless signal, the management unit causes one of the wireless signal processing units that has received the second wireless signal to wirelessly communicate with the terminal until the end of a specified period.
RADIO FREQUENCY/OPTICAL WIRELESS COMMUNICATION SYSTEM, RADIO FREQUENCY/OPTICAL WIRELESS COMMUNICATION METHOD, MOBILE TERMINAL DEVICE, AND MOBILE TERMINAL PROGRAM
The present disclosure provides an RF/lightwave communication system C in which a mobile terminal device M transmits a broadcast in a lightwave region and a layer 2 in a case of performing communication with an RF access point R, a lightwave access point L1 or L2 that receives the broadcast in the lightwave region and the layer 2 returns a response packet in the lightwave region and the layer 2 to the mobile terminal device M, and the mobile terminal device M performs switching of a communication path from the RF access point R to the lightwave access point L1 or L2 that is allowed to return the response packet in the lightwave region and the layer 2 in a case where the mobile terminal device M is allowed to receive the response packet in the lightwave region and the layer 2.
A data processing equipment 1 performs a convolution operation on two items of input data having a width of 2M* N-bit, where N is a positive integer and M is an integer of 0 or more, with a minimum accuracy of a convolution operation being N bits, in a case of performing processing corresponding to a plurality of the Ms that are consecutive, performs a product-sum operation of the minimum accuracy, in a case in which a value of the M is not 0, performs shift processing on an operation result of a product-sum operation of the minimum accuracy and performs an operation of a sign in a convolution operation of the input data, reflects a sign held until a reset signal is received in an output of the shift processing according to a value of the M, and cumulatively adds an output of the shift processing in which a sign is reflecte.
G06F 7/544 - Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state deviceMethods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using unspecified devices for evaluating functions by calculation
92.
ACCELERATOR OFFLOAD DEVICE, ACCELERATOR OFFLOAD METHOD AND PROGRAM
An accelerator offload device (100) includes: a data processing amount acquisition part (110) that acquires a data processing amount that is a data processing amount at the current time of offload target processing being performed and/or a predicted data processing amount; an operation destination determination part (120) that determines whether to perform an operation by a CPU (11) or offload the operation to an ACC (12) based on the data processing amount of an APL (1), and when a change is necessary, changes an offload destination of an operation processing offload part (130); and an operation processing offload part (130) that receives a request of operation processing from the APL (1), stores data to be processed and a processing instruction in a shared memory, and causes the CPU (11) or the ACC (12) to execute pertinent processing.
An optical waveguide connection structure which connects a silicon optical waveguide and an SiO2 optical waveguide is constituted by an under-clad layer formed on an upper surface of a support substrate; a ridge structure formed on an upper surface of the under-clad layer; a silicon core being in contact with the ridge structure; a pattern structure which is in contact with the silicon core, has a shape and a size coincident to the silicon core in a top view, and has a refractive index lower than that of the silicon core; an SiO2 core which covers the ridge structure, the pattern structure and the silicon core, and has a refractive index lower than the silicon core and higher than the under-clad-layer; and an over-clad layer which is in contact with the SiO2 core and has a refractive index lower than that of the SiO2 core.
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
The optical device includes a gain region constituting a waveguide type semiconductor laser, and a waveguide type light modulation region that modulates laser light of the semiconductor laser. The semiconductor laser is a distributed Bragg reflector laser, and the gain region is disposed between a first distributed Bragg reflector region and a second distributed Bragg reflector region. Further, the light modulation region is disposed between the gain region and the first distributed Bragg reflector region. The light modulation region includes a light modulation layer including a material having an electro-optical effect and disposed in a range couplable to propagating light.
An optical transmission apparatus that transmits an optical signal between a communication terminal device and a network without converting the optical signal into an electrical signal includes: a plurality of multiplexing/demultiplexing units configured to receive and output optical signals from and to the communication terminal device connected to the optical transmission apparatus; a plurality of wavelength multiplexing/separating units configured to receive and output optical signals from and to the network connected to the optical transmission apparatus; and an optical distribution unit configured to output optical signals output from the multiplexing/demultiplexing units and subjected to predetermined electrical processing to a predetermined multiplexing/demultiplexing unit.
An aspect of the present invention includes a mobile collection station device, one or more relay station devices, and one or more terminal station devices, the mobile collection station device is configured to transmit a terminal startup signal for starting up the terminal station device at a second frequency different from a first frequency which is a transmission frequency of the terminal station device, the relay station device is configured to transmit a predetermined signal at the first frequency when the terminal startup signal from the mobile collection station device is received, and the terminal station device is configured to start up the terminal station device and then to transmit a desired data signal to the mobile collection station device when the predetermined signal from the relay station device is received.
An optical transmitter includes: a main signal generation unit that generates a main signal; a control signal generation unit that generates a control signal having a speed lower than a speed of the main signal; a wavelength-tunable driver that converts the control signal generated by the control signal generation unit into a signal for wavelength control; and a wavelength-tunable transmitter that generates a modulated optical signal on the basis of the main signal and the signal for wavelength control.
Provided is an abnormal section estimation method in a system in which an optical transmitter and an optical receiver are connected by an optical transmission line, the optical transmission line being divided into a plurality of sections at one or more monitoring points from the optical transmitter to the optical receiver, the abnormal section estimation method including: extracting, based on an optical signal transmitted from the optical transmitter, signal data on a complex plane of the optical signal expressed by phase and amplitude at the one or more monitoring points; acquiring an abnormality estimation result of at least one of the plurality of sections by inputting the signal data extracted at the one or more monitoring points to trained models trained to receive the signal data as input and output the abnormality estimation result; and estimating a section where an abnormality has occurred based on the acquired abnormality estimation result.
H04B 10/077 - Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
H04Q 11/00 - Selecting arrangements for multiplex systems
99.
PARKING AREA EXTRACTION DEVICE, PARKING AREA EXTRACTION METHOD, AND PARKING AREA EXTRACTION PROGRAM
A parking region extraction apparatus is a parking region extraction apparatus for extracting a parking region which is a region for parking a vehicle in a site, and includes an acquisition unit that acquires map information including the site, an extraction unit that extracts candidates for the parking region by dividing the site using the map information, and an estimation unit that derives an accuracy of each of the candidates and estimate the parking region.
A signal processing apparatus includes a timing correction unit, a frame detection unit, a beam control unit, and a decoding unit. The timing correction unit detects sample timing deviations among reception systems on the basis of known signal sections included in waveform data having been obtained by sampling waveforms of radio signals having been received by a communication apparatus using the plurality of reception systems and performs processing of correcting the detected sample timing deviations on the waveform data. The frame detection unit detects frames of radio signals in the waveform data with the sample timing deviations corrected and performs compensation for a Doppler shift on the detected frames. The beam control unit performs reception beam control on the plurality of frames on which the compensation for the Doppler shift has been performed. The decoding unit decodes signals having been obtained through the reception beam control and obtains data having been transmitted by the radio signals.
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