Abstract

A sender system 2 is equipped with an optical transmitter 20 that transmits an encoded optical signal 40 at a predetermined strength via a line-of-sight (LOS) communication channel 4, and a key distillator 21 that generates a cryptographic key from a random bit sequence outputted by the optical transmitter 20 through a key distillation processing via an authenticated public communication channel 5. A legitimate receiver system 3 is equipped with an optical receiver 30 that receives the optical signal 40 from the optical transmitter 20 via the LOS communication channel 4, and a key distillator 31 that generates a cryptographic key from the random bit sequence outputted by the optical receiver 30 through the key distillation processing via the authenticated public communication channel 5.

IPC Classes  ?

• H04L 9/08 - Key distribution

Abstract

Provided is a protective-layer-equipped radio wave scattering sheet provided with a protective layer that prevents radio wave scattering characteristics from being hindered as much as possible while improving the appearance and the durability of the radio wave scattering sheet.　By covering a radio wave scattering surface 1d of a radio wave scattering sheet 1 with a dielectric layer 2, a protective-layer-equipped radio wave scattering sheet 11 that has protected a surface metal processing layer 1c improves the appearance and the durability of the radio wave scattering sheet 1 by the dielectric layer 2. In addition, by setting the thickness of the dielectric layer 2 that covers the radio wave scattering surface 1d within the range of 0.25-3.0 mm and setting the relative dielectric constant of the dielectric layer 2 within the range of 2.0-4.0, reduction of the directivity diffusion degree is suppressed within 10%.

IPC Classes  ?

• H01Q 15/14 - Reflecting surfacesEquivalent structures
• B32B 7/025 - Electric or magnetic properties

Abstract

A transistor having an extremely short gate and an extremely thin carrier transport layer, the transistor comprising: a substrate having a flat uppermost surface, a vertical surface intersecting the uppermost surface and extending downward from the uppermost surface, and a lower step surface substantially parallel to the uppermost surface and intersecting the vertical surface; a conductive thin film formed in contact with the uppermost surface of the substrate; an insulating film formed so as to cover at least the vertical surface and the end part of the conductive thin film; a two-dimensional semiconductor layer formed so as to cover the uppermost surface, the vertical surface, and the lower step surface, the two-dimensional semiconductor layer formed overlapping so as to cover the conductive thin film and/or the insulating film in locations where the conductive thin film and/or the insulating film are present; a source electrode provided at locations covering the uppermost surface in the two-dimensional semiconductor layer; and a drain electrode provided at locations covering the lower step surface in the two-dimensional semiconductor layer.

IPC Classes  ?

• H01L 29/786 - Thin-film transistors
• H01L 21/336 - Field-effect transistors with an insulated gate

Abstract

The present invention provides an integrated circuit suitable for use in a signal frequency band of 1 THz or more.　An integrated circuit comprises: a substrate in which at least the uppermost surface is a silicon carbide single crystal, and that has a vertical surface intersecting with the uppermost surface and extending downward from the uppermost surface, and a lower surface substantially parallel to the uppermost surface and intersecting with the vertical surface; and a single crystal graphene layer in contact with the uppermost surface of the substrate, wherein a short gate length transistor and an antenna element are integrally formed. The short gate length transistor has a gate electrode which is an edge of the graphene layer intersecting with the vertical surface and comprises: an insulating film which covers at least the vertical surface and the edge of the graphene layer; a two-dimensional semiconductor layer which covers the uppermost surface, the vertical surface, and the lower surface, and is formed so as to also cover the graphene layer and/or the insulating film; a source electrode provided in a location covering the uppermost surface of the two-dimensional semiconductor layer; and a drain electrode provided in a location covering the lower surface of the two-dimensional semiconductor layer. The antenna element is formed by patterning the graphene layer.

IPC Classes  ?

• H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
• H01L 21/338 - Field-effect transistors with a Schottky gate
• H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
• H01L 29/812 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a Schottky gate
• H01P 5/02 - Coupling devices of the waveguide type with invariable factor of coupling

Abstract

An object is to prevent eavesdropping in quantum key distribution. A synchronization signal reception device receives a synchronization signal that is an optical signal for defining a timing at which a quantum signal is detected, and outputs a reference signal corresponding to the synchronization signal. A clock signal generation unit generates a clock signal in response to the reference signal. A photon detection device detects a photon of the quantum signal in response to the clock signal. A timing of the clock signal randomly changes within a predetermined range.

IPC Classes  ?

• H04L 9/08 - Key distribution
• H04B 10/70 - Photonic quantum communication
• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Abstract

Provided is an audio data generation device that achieves high-quality audio generation processing (for example, speech synthesis processing) at high speed without using a GPU that is capable of high-speed processing. The audio data generation device has a configuration in which a multi-stream generation unit obtains a plurality of stream data; furthermore, introducing a learnable convolution processing unit enables adversarial learning with the high-accurate data discrimination device. The audio data generation device obtained through the adversarial learning can perform high-speed and highly accurate audio data generation processing. Furthermore, the audio data generation device has a simple configuration, thus achieving high-quality audio data generation processing (for example, speech synthesis processing) at high speed without using a GPU that is capable of high-speed processing.

IPC Classes  ?

• 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 13/08 - Text analysis or generation of parameters for speech synthesis out of text, e.g. grapheme to phoneme translation, prosody generation or stress or intonation determination
• G10L 25/30 - Speech or voice analysis techniques not restricted to a single one of groups characterised by the analysis technique using neural networks

Abstract

A polymer represented by the formula (1) is provided. A polymer represented by the formula (1) is provided. A polymer represented by the formula (1) is provided. in which RA1 and RA2 have the meanings as defined in the claims and the description. X represents a phenylene group, an ethylene group, or a phenylenevinylene group, RD1 and RD2 have the meanings as defined in the claims and the description. Y represents a linking group. Po represents a polymer structure.

IPC Classes  ?

• C08F 220/14 - Methyl esters
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics

Abstract

[Problem] To provide a wireless access method and a wireless terminal with which it is possible to avoid a hidden terminal problem and enable efficient wireless channel access in a wireless access scheme in millimeter wave and THz wave unlicensed bands in which directional antennas are often used. [Solution] This wireless access method for a plurality of wireless terminals to communicate by sharing a frequency is characterized in that: a first wireless terminal specifies a radio resource on which reception is planned, and transmits a packet including information relating to the specified radio resource as a control signal; and when a second radio terminal receives the packet transmitted by the first radio terminal and extracts the information relating to the radio resource on which the first wireless terminal is planning to receive, the second radio terminal selects one or a plurality of radio resources from the remainder of a selection range of radio resources for performing transmission, excluding the wireless resource on which the first wireless terminal is planning to receive, and performs transmission.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 16/14 - Spectrum sharing arrangements
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/40 - Resource management for direct mode communication, e.g. D2D or sidelink

Abstract

A superconducting single-photon detection system includes: a plurality of optical transmission paths through each of which a photon emitted from a light source is transmitted; a plurality of superconducting single-photon detectors (hereinafter referred to as “SSPDs”) that are independent of each other and in one-to-one correspondence with the optical transmission paths; and a superconducting logic circuit that multiplexes first pulse signals output from the SSPDs. A photon entry time at which the photon enters each of the SSPDs through a corresponding one of the optical transmission paths is different for each of the optical transmission paths, and a difference in the photon entry time between the optical transmission paths is greater than a pulse width of a corresponding one of second pulse signals output from the superconducting logic circuit.

IPC Classes  ?

• G01J 1/44 - Electric circuits
• G01J 1/04 - Optical or mechanical part

Abstract

[Problem] To perform synchronization between wireless base stations without constructing a network using equipment compatible with the IEEE 1588 standard. [Solution] In this synchronization method: a first signal is transmitted from a wireless device 2a on the basis of a first synchronization timing possessed by the wireless device itself, and a second signal responding to the received first signal is transmitted from a wireless device 2b; the wireless device 2a that has received the second signal calculates a propagation time of radio waves between the wireless device 2a and the wireless device 2b; the wireless device 2b calculates a relative time difference between a second synchronization timing possessed by the wireless device 2b itself and the timing at which the first signal was received; the wireless device 2a transmits information relating to an accuracy rank of the wireless device 2a itself and information relating to the calculated propagation time to the wireless device 2b, and the wireless device 2b transmits information relating to the accuracy rank of the wireless device 2b itself and information relating to the calculated time difference to the wireless device 2a; and synchronization is achieved by reducing a calculated clock deviation by making a correction toward the synchronization timing having the superior compared accuracy rank.

IPC Classes  ?

• H04L 7/00 - Arrangements for synchronising receiver with transmitter
• H04W 56/00 - Synchronisation arrangements

Abstract

A phase modulator calibration method includes steps of: providing a first delay interferometer to be used as a phase calibration reference and a second delay interferometer in which a phase modulator to be calibrated is installed in an optical path; for each of the first and second delay interferometers, measuring a delay time based on a time interval between pulses split from one input pulse and synchronizing the delay time with a cycle of a transmission clock; for the first delay interferometer, adjusting a phase difference so that input continuous-wave laser light produces an intensity-enhancing interference at an output; and determining the control signal with a calibration circuitry formed by connecting the first delay interferometer as a front stage and the second delay interferometer as a rear stage in a cascaded manner.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
• 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

Abstract

An antenna module includes: a substrate with at least the top surface being a single crystal of silicon carbide; a single-crystal graphene layer provided in contact with the top surface of the substrate; and a gallium nitride layer on the substrate. The antenna module is characterized in that an antenna element portion is formed by patterning a region in the graphene layer that is not covered by the gallium nitride layer, an active element portion is formed in the gallium nitride layer, and a connection portion connecting the antenna element portion and the active element portion are integrally formed.

IPC Classes  ?

• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
• H01L 29/20 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
• H01L 29/66 - Types of semiconductor device
• H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT

Abstract

A signal processing circuit according to the present invention includes: a first transmission path through which a pulse signal is transmitted; a SQUID including a first magnetic field input unit and a second magnetic field input unit that are magnetically coupled to the first transmission path as a result of the pulse signal being transmitted through the first transmission path; a second transmission path connected to a current source and the SQUID; and a delay circuit that is provided to the first transmission path between a portion of the first transmission path that is magnetically coupled to the first magnetic field input unit and a portion of the first transmission path that is magnetically coupled to the second magnetic field input unit, and that delays the pulse signal. A delay time of the pulse signal set by the delay circuit is shorter than the total time of the rise time and fall time of the pulse signal. By the direction of the magnetic field at the first magnetic field input unit and the direction of the magnetic field at the second magnetic field input unit being opposite to each other, the pulse width of the voltage signal transmitted through the second transmission path becomes equal to the delay time.

IPC Classes  ?

• H10N 60/12 - Josephson-effect devices
• G01J 1/02 - Photometry, e.g. photographic exposure meter Details
• G01J 1/44 - Electric circuits
• G01J 11/00 - Measuring the characteristics of individual optical pulses or of optical pulse trains

Abstract

A connection destination malignancy determination system connected to the Internet through a network includes: a connection destination observation unit that observes a connection destination; a connection destination malignancy determination unit that determines a malignancy indicating the degree of maliciousness of the connection destination; and a countermeasure priority determination unit that determines a countermeasure priority indicating the degree of preferential countermeasure required based on the malignancy and an observation result of the connection destination.

IPC Classes  ?

• H04L 9/40 - Network security protocols

Abstract

[Problem] To provide a wireless communication control device capable of preventing deterioration of QoS for a long time due to waiting for useless repetition of retransmission in a wireless environment, such as a manufacturing site, where various noise radio waves or the like are generated. [Solution] This wireless communication control device connected to a wireless network and having a transmission/reception means for transmitting/receiving data is characterized by comprising: a radio wave observation/collection means for observing radio waves over the transmission/reception means and/or the wireless network, and for collecting information relating to the use state of the wireless network; a radio wave type estimation means for, on the basis of the information relating to the use state collected by the radio wave observation/collection means, estimating whether each observed radio wave is a result from wireless communication or is a result, such as a noise radio wave, not from wireless communication; and a wireless communication control means for controlling the transmission/reception means on the basis of the estimation result estimated by the radio wave type estimation means.

IPC Classes  ?

• H04B 17/309 - Measuring or estimating channel quality parameters
• H04W 24/08 - Testing using real traffic

Abstract

A hypothesis generation device 100, which provides a hypothesis generation device and a hypothesis generation method with which it is possible to obtain an interesting and highly reliable hypothesis that is related to the content of an input but not easily thought of, comprises: a related text creation unit 114 for receiving input text 110 and creating related text related to the input text 110; and a hypothesis generation neural network 122 that has been pre-trained to receive the text 110 and the related text as input and generate a hypothesis from the input text 110.

IPC Classes  ?

• G06N 5/04 - Inference or reasoning models
• G06F 16/90 - Details of database functions independent of the retrieved data types
• G06F 40/56 - Natural language generation
• G06F 40/279 - Recognition of textual entities

Abstract

[Problem] To achieve switching to an access point without necessitating excessive exchange of information while maintaining communication quality as much as possible. [Solution] This mobile body radio communication performance estimation system: measures the radio wave intensity of packets for radio communication between any one of access points 2 and a mobile body 3; determines whether or not the measured radio wave intensity is equal to or greater than a first threshold value for each of a plurality of packets included in one measurement slot; and determines, on a per-measurement slot basis, whether the measurement slot is in a communication enabled state or a communication interrupted state on the basis of the result of the determination for each packet. The state of each measurement slot is determined on the basis of whether or not each packet in the measurement slot has a radio wave intensity greater than or equal to the first threshold value in addition to whether or not the immediately preceding measurement slot in chronological order is in the communication interrupted state.

IPC Classes  ?

• H04W 36/30 - Reselection being triggered by specific parameters by measured or perceived connection quality data
• H04W 4/30 - Services specially adapted for particular environments, situations or purposes
• H04W 24/08 - Testing using real traffic
• H04W 36/34 - Reselection control

Abstract

[Problem] To provide a communication system that makes it possible to, in a wireless environment where various noises and the like occur as in the case of a manufacturing site, make a connection with a more appropriate access point than when determined by only wireless environment information obtained by observation by individual mobile wireless devices while shortening the time required for search and switching by eliminating the need for search. [Solution] Provided is a communication system in which a centrally managed controller creates a control policy for a wireless device such as an AGV, which moves while receiving a movement instruction or the like using wireless communication, on the basis of wireless environment information including a communication situation, a channel congestion rate, and the like, position information of a mobile wireless device, and position information of access points, buildings, and facilities, and the mobile wireless device performs wireless communication while switching a communication path in accordance with the control policy.

IPC Classes  ?

• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 4/33 - Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
• H04W 36/38 - Reselection control by fixed network equipment
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A personal information protection management system for genomic data includes data storage, role storage, a filter, and a data output part. The data storage is configured to store genomic data. The role storage is configured to store an identifier of a data output destination and a role in association with each other, the role including a detail of filtering for removing from genomic data a part that is not to be outputted. The filter is configured to filter the stored genomic data based on the stored role. The data output part is configured to output the filtered genomic data to the data output destination. The filter is configured to obtain a data request signal transmitted from the data output destination and, based on the role that is associated with the identifier included in the obtained data request signal, filter the genomic data.

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06F 21/60 - Protecting data

Abstract

To control a mobile node group that performs a formation flight, mobile nodes constituting the mobile node group and a ground station that wirelessly communicates with each of the mobile nodes are included. The mobile nodes are classified into a follower mobile node and a leader mobile node that collects information on the follower mobile node and controls the follower mobile node. The mobile nodes wirelessly communicate with one another based on beamforming or MIMO. Based on an installed on-board processor, the leader mobile node controls the follower mobile node, and the mobile node controls a position or an attitude of the mobile node itself for performing the formation flight. The ground station performs link control of the wireless communication with the mobile node or link control of the wireless communication between the mobile nodes, and control of selecting any ground station that wirelessly communicates with the mobile node.

IPC Classes  ?

• B64G 1/10 - Artificial satellitesSystems of such satellitesInterplanetary vehicles
• B64G 1/24 - Guiding or controlling apparatus, e.g. for attitude control

Abstract

[PROBLEM] To automate key relay route calculations while reducing the rejection rate, key consumption amount, or the like of key relay requests in a quantum key delivery network. [SOLUTION] A node 10 for a quantum key delivery network that generates an encryption key shared with another node by quantum key delivery includes: an encryption key manager 12 that supplies, to a relay destination node, a first encryption key which is shared between a starting end node 10 (A) and a terminal node 10 (C); and a key relay route calculation engine 14 that determines the relay destination node from among a plurality of candidates that can be a relay destination node. The key relay route calculation unit 14 determines a relay destination node on the basis of: (A) a residual amount value of the encryption key for each link with the plurality of candidates; (B) a predicted value for the consumption amount of the encryption key for each link with the plurality of candidates; and (C) a predicted value for the generation amount of the encryption key for each link with the plurality of candidates.

IPC Classes  ?

• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
• H04L 45/03 - Topology update or discovery by updating link state protocols

Abstract

AABABBABAABABBABAB. Distances between all the base stations 2 are calculated by multiplying respective transfer times, which have been calculated between all the base stations 2 in the same manner, by the transfer speeds of the signals.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management

Abstract

A wireless communication system includes a base station group constituted of four or more base stations 2. One base station 2A measures a reception clock time TAA of a signal transmitted by itself and a reception clock time TBA of a signal received from another base station 2B, and the other base station 2B measures a reception clock time TBB of a signal transmitted by itself and a reception clock time TAB of a signal received from the one base station 2A. Based on the reception clock time TAA and the reception clock time TBA and the reception clock time TBB and the reception clock time TAB, a propagation time between the base stations 2 is obtained, and distances between all the base stations 2 are obtained by multiplying each of the propagation times similarly obtained between all the base stations 2 by a propagation velocity of the signals.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements

Abstract

[Problem] To provide a network management system capable of reducing overhead in data resource access control. [Solution] A network management system 100 for performing data resource access control is characterized by: comprising a data resource, a plurality of computers 2 that access the data resource, a plurality of edge gateways 3 connected to the plurality of computers 2, and a controller 1 connected to the plurality of edge gateways 3; and including a saving means that saves a data policy 4, and a virtual network configuration means that references the data policy 4 and generates a virtual network 5 between the edge gateways 3 and an interface for connecting to the virtual network 5.

IPC Classes  ?

• H04L 41/0894 - Policy-based network configuration management
• G06F 21/60 - Protecting data
• H04L 41/0895 - Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements

Abstract

Provided are an antenna device and a wireless communication device with which it is possible to reduce phase variations with respect to the emission angle of radio waves being emitted or the arrival angle of radio waves being received. The antenna device comprises: a plate-shaped ground having a through-hole; a plate-shaped antenna element which is disposed in the through-hole and has a length corresponding to a half-wavelength of radio waves of a first frequency; and a waveguide element which is disposed in an emission direction in which the antenna element emits the radio waves, and which is disposed so as to at least partly overlap an end in the length direction of the antenna element when viewed in the emission direction. The waveguide element has a size corresponding to 0.1 to 0.38 times the wavelength of the radio waves.

IPC Classes  ?

• H01Q 13/16 - Folded slot antennas
• H01Q 19/00 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic

Abstract

A training data generator and a training device include: a supposed input storage storing a plurality of supposed inputs supposed as inputs to a dialogue apparatus; expanded causality DB storing a plurality of causality expressions; a training data preparing unit extracting, for each of the plurality of supposed inputs stored in supposed input storage, a causality expression having a prescribed relation with said supposed input from the plurality of causality expressions, for forming a training data sample having the supposed input as an input and the extracted causality expression as an answer and storing in a training data storage; and a training unit training a response generating neural network designed to generate an output sentence to a natural language input sentence, by using the training data samples stored in training data storage.

IPC Classes  ?

• G06F 40/20 - Natural language analysis

Abstract

A transmitter in one aspect of the present invention generates a pulse code string by coding transmission information according to allocation of respective pulse code strings to codewords, and transmits the generated pulse code string. The pulse code strings each include at least four pulses. The pulse code strings are designed such that any pair of the pulse code strings has, at most, two common pulses under all possible shifts of discrete time slots. The foregoing provides a communication technology by which improvement of data rate in data communication among a large number of devices can be expected.

IPC Classes  ?

• H04L 25/49 - Transmitting circuitsReceiving circuits using code conversion at the transmitterTransmitting circuitsReceiving circuits using predistortionTransmitting circuitsReceiving circuits using insertion of idle bits for obtaining a desired frequency spectrumTransmitting circuitsReceiving circuits using three or more amplitude levels
• H03M 7/20 - Conversion to or from n-out-of-m codes
• H04J 13/10 - Code generation

Abstract

This invention increases the likelihood that information with the contents intended by a transmitter reaches a receiver, even if a network has been skillfully tampered with. A control device 100 for a communication network includes a plurality of nodes and links each connecting two of the nodes, the control device 100 comprising: a segmentation instruction unit 110 that, assuming a configuration in which the same relay node is not shared by a plurality of routes which each connect, via a relay node, a source node which is an information transmission source and a terminal node which is a destination for the information, instructs the source node to distribute the information into a plurality of pieces of random number data, generate a codeword by encoding the random number data using an error correction code, and divide the codeword into a plurality of segments ordered from the top; and a first transmission instruction unit 120 that instructs the source node to transmit OTP encoded data of the plurality of segments of through the plurality of routes.

IPC Classes  ?

• H04L 9/08 - Key distribution
• G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
• H04L 12/22 - Arrangements for preventing the taking of data from a data transmission channel without authorisation

Abstract

A virtual object operation device (1) comprises: an MR video generation unit (15) that generates an MR video obtained by superimposing a virtual object and a video of a designated gaze direction in a spherical panorama video inputted from a spherical panorama camera for imaging the real world; an operation instruction input unit (13) for inputting an operation instruction for the virtual object on the MR video generated by the MR video generation unit (15); an operation unit (141) that subjects the virtual object to an operation corresponding to the operation instruction; a control information transmission unit (11) that transmits, as control information, position information of the virtual object operated by the operation unit (141) to a HMD; and a control information reception unit (12) that receives, as control information, position information pertaining to the position where the virtual object was operated by the HMD.

IPC Classes  ?

• G06F 3/04845 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour
• G06T 19/00 - Manipulating 3D models or images for computer graphics

Abstract

[Problem] To provide a communication device capable of achieving maximally effective use of an ultra-narrow communication area by performing time synchronization and pre-negotiation between terminals using a different frequency band that allows wide-area communication. [Solution] This communication device, which uses two frequencies, comprises: a first wireless communication unit (20, 30) which performs communication with another communication device using a millimeter wave and a terahertz wave; a second wireless communication unit (21, 31) which transmits and receives a frame including pre-negotiation information between this communication device and the other communication device using a radio wave having a lower frequency than that of the first wireless communication unit (20, 30), the pre-negotiation information including at least a start time of the first wireless communication unit; and a control unit (24, 34) which controls the first wireless communication unit (20, 30) to start radio wave transmission and reception on the basis of the start time, and is characterized in that the control unit is provided inside or outside the communication device.

IPC Classes  ?

• H04W 88/06 - Terminal devices adapted for operation in multiple networks, e.g. multi-mode terminals
• H04B 17/18 - Monitoring during normal operation
• H04B 17/27 - MonitoringTesting of receivers for locating or positioning the transmitter
• H04B 17/29 - Performance testing
• H04W 4/00 - Services specially adapted for wireless communication networksFacilities therefor
• H04W 56/00 - Synchronisation arrangements
• H04W 64/00 - Locating users or terminals for network management purposes, e.g. mobility management
• H04W 76/15 - Setup of multiple wireless link connections

Abstract

A node includes: a communication module that recovers a clock signal of another node; a high-precision clock module; a first phase/frequency comparison module; a time estimation section that estimates time information of each node; a counter value correction section that corrects a counter value; a fractional PLL; a second phase/frequency comparison module; and a division ratio correction section that corrects a division ratio of the fractional PLL.

IPC Classes  ?

• H04L 7/033 - Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal- generating means, e.g. using a phase-locked loop
• H03L 7/099 - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop

Abstract

A hologram recording device includes an image sensor and a light interference generator that is attached to an imaging surface of the image sensor. The light interference generator is configured to generate two light waves whose phases are different from each other from an incident object light, and the image sensor is configured to record interference fringes that are formed from the two light waves as a hologram. The light interference generator includes a first birefringent material, a phase shifter array configured to spatially divide a polarization component whose polarization direction is parallel to or orthogonal to an optic axis of the first birefringent material to change a phase difference in two or more ways, and a polarizer whose transmission axis is in a direction that is inclined with respect to the optic axis of the first birefringent material. The first birefringent material, phase shifter array, and polarizer are arranged in this order starting from a side of incidence of light.

IPC Classes  ?

• G03H 1/04 - Processes or apparatus for producing holograms
• G03H 1/06 - Processes or apparatus for producing holograms using incoherent light
• G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique

Abstract

A gene analysis method that includes: a preparation step for preparing a cell lysate derived from the cell to be analyzed, the cell lysate containing a modified ribosome and a target mRNA bound to the modified ribosome; a first recovery step for, in the cell lysate, contacting the modified ribosome with a first binding protein and recovering the modified ribosome; a second recovery step for contacting the recovered modified ribosome with a second binding protein and recovering the modified ribosome; an amplification step for amplifying cDNA derived from the target mRNA bound to the recovered modified ribosome by the PCR method; and an analysis step for analyzing the amplified cDNA, wherein the modified ribosome contains a modified RpL10a, and the modified RpL10a contains a ribosomal protein L10a region, a first tag region specifically recognized by the first binding protein, and a second tag region specifically recognized by the second binding protein.

IPC Classes  ?

• C12Q 1/6869 - Methods for sequencing
• C12N 15/11 - DNA or RNA fragmentsModified forms thereof
• C12N 15/63 - Introduction of foreign genetic material using vectorsVectorsUse of hosts thereforRegulation of expression
• C12Q 1/686 - Polymerase chain reaction [PCR]
• C12Q 1/6876 - Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
• G01N 33/53 - ImmunoassayBiospecific binding assayMaterials therefor

Abstract

The abstract below has been amended in order to comply with USPTO requirements. Application respectfully requests to replace any prior versions of the abstract with the following: The abstract below has been amended in order to comply with USPTO requirements. Application respectfully requests to replace any prior versions of the abstract with the following: An encryption key generating device includes a shared key separator separating a shared key into a first key and a second key and storing the first key in a non-volatile memory and storing the second key in a volatile memory; a key extender extending the second key to the same key length as that of the first key and storing the second key extended as a third key in the volatile memory; a key calculator calculating an encryption key by an exclusive-OR of the first key and the third key and storing it in the volatile memory.

IPC Classes  ?

• H04L 9/08 - Key distribution

Abstract

The present invention achieves a hologram recording of natural light with a configuration that can be manufactured affordably and easily. This recording device (10) comprises: a first reflective element (11) that reflects portion of object light; a second reflective element (12) that causes the curvature of the wavefront of first object light reflected at the first reflective element to differ from the curvature of the wavefront of second object light reflected at the second reflective element, and that is disposed adjacent to the back surface of the first reflective element; and an imaging device (13) that images interference fringes.

IPC Classes  ?

• G03H 1/06 - Processes or apparatus for producing holograms using incoherent light

Abstract

A semiconductor light-emitting element (100, 200, 300) comprises a substrate (10) and a semiconductor layer (20). A constituent material of the substrate is single-crystal aluminum nitride. The substrate has a first main surface (10a) and a second main surface (10b) that is the opposite surface from the first main surface. The semiconductor layer has an n-type semiconductor layer (21) that is disposed on the first main surface, an active layer (22) that is disposed on the n-type semiconductor layer and produces deep ultraviolet light, and a p-type semiconductor layer (23) that is disposed on the active layer. The semiconductor layer has a plurality of mesa structures (24) in any cross-sectional view thereof. A plurality of protrusions (10c) are formed on the second main surface. The protrusions are each opposite a mesa structure. The protrusions each have a top face (10d). An angle (θ1) defined by tan-1{(W2-W1)/2L} is -25° to 65°.

IPC Classes  ?

• H01L 33/22 - Roughened surfaces, e.g. at the interface between epitaxial layers
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

Link control is performed to optical space communication devices, which are installed in a non-terrestrial node group and an optical ground station, and optical space communication is performed using one or more links, based on link path information and a link parameter for transmitting and receiving communication service data based on service requests and link monitoring information received from the non-terrestrial node group. A link monitoring unit measures the link monitoring information, a position calculation unit calculates position information of the non-terrestrial node group, and a link parameter calculation unit calculates the link path information and the link parameter based on the position information, the service requests, and the link monitoring information. A link control unit performs link control to the optical space communication devices, and a link information communication unit communicates with the non-terrestrial node group.

IPC Classes  ?

• H04B 10/118 - Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
• 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

Abstract

A semiconductor light-emitting element (100, 200, 300) comprises: a substrate (10); and a semiconductor layer 20. The substrate has a first main surface (10a) and a second main surface (10b) opposite to the first main surface. The semiconductor layer has an n-type semiconductor layer (21) disposed on the first main surface, an active layer (22) which is disposed on the n-type semiconductor layer and which generates deep ultraviolet light, and a p-type semiconductor layer (23) disposed on the active layer. The semiconductor layer has a mesa structure (24). The second main surface has a first region (10ba) that is opposite to the mesa structure, and a second region (10bb) located around the first region. The region is composed of a flat surface. An recess-projection structure (10c, 10d) is formed in the second region. The width of the first region is 0.1-3.0 times of that of the mesa structure in a plan view.

IPC Classes  ?

• H01L 33/22 - Roughened surfaces, e.g. at the interface between epitaxial layers
• H01L 33/56 - Materials, e.g. epoxy or silicone resin

Abstract

An information processing system includes a processing result database that stores a processing result of a processing target including location information. One or more processors determine a unit area corresponding to the location information included in the processing target. The processors analyze the text through any of analysis processes including a first analysis process and a second analysis process higher in accuracy than the first analysis process. When a processing result of another processing target for the determined unit area has been already stored after obtaining a first processing result by analyzing the text through the first analysis process, the processors add the first processing result to the processing result database. When the processing result of the other processing target has not been stored, the processors obtain a second processing result by analyzing the text through the second analysis process and store the same into the processing result database.

IPC Classes  ?

• G06F 16/9537 - Spatial or temporal dependent retrieval, e.g. spatiotemporal queries
• G06F 16/23 - Updating
• G06F 16/903 - Querying
• G06F 16/9536 - Search customisation based on social or collaborative filtering

Abstract

The problem of the present invention is to provide a substrate with high versatility, a method for producing the substrate, and a method for producing a unit cell using the substrate. The problem is solved by providing a substrate comprising a plurality of alkali metal azide spots on a substantially flat surface.

IPC Classes  ?

• C03C 17/22 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with other inorganic material
• B32B 3/26 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids
• B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
• B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
• B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
• B32B 38/00 - Ancillary operations in connection with laminating processes
• G04F 5/14 - Apparatus for producing preselected time intervals for use as timing standards using atomic clocks
• H01S 1/06 - Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range gaseous
• H03L 7/26 - Automatic control of frequency or phaseSynchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference

Abstract

An authentication system (1) comprises, within a quantum key distribution network: a node (2) of a user A that transmits a message; a node (4) of a user B that receives the message; and a central management node (3) that performs partner authentication and message authentication between the users.

IPC Classes  ?

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

Abstract

A base station includes the following parts: a propagation estimation part that estimates a radio wave propagation characteristic between a terminal and base station based on a training signal received from the terminal; a phase compensation part that compensates data to be transmitted to the terminal with phase rotation of a carrier wave that is indicated by the radio wave propagation characteristic; and a frequency conversion part that transmits the data that has been compensated by the phase compensation part to the terminal.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 27/26 - Systems using multi-frequency codes

Abstract

This superconducting strip detector comprises a superconducting strip disposed in a detection region of a detection target having significant energy, and detects the detection target in the detection region by placing a superconducting strip in a superconducting state and passing a bias current to the superconducting strip from a predetermined bias current path. The superconducting strip includes a wiring portion in which the critical current value per unit length in the line width direction at both ends in the line width direction is larger than at the center portion in the line width direction.

IPC Classes  ?

• H10N 60/82 - Current path
• G01J 1/02 - Photometry, e.g. photographic exposure meter Details
• H01L 31/08 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof in which radiation controls flow of current through the device, e.g. photoresistors

Abstract

Provided is an optical waveguide comprising: an optical propagation path that includes an organic electro-optic polymer material; and a layered structure that has a first layer that covers at least a portion of the optical propagation path and prevents oxygen permeation from outside toward the optical propagation path, and a second layer that prevents moisture permeation from outside toward the first layer. The first layer may include Al2O3 and the second layer may include SiO2. The layered structure may have a three-layer structure formed by stacking, in order, the second layer, the first layer, and a third layer that prevents moisture permeation from the optical propagation path toward the first layer.

IPC Classes  ?

• G02F 1/065 - 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 electro-optical organic material in an optical waveguide structure

Abstract

[Problem] To provide a control packet transmission system, a control packet transmission method, and a control packet transmission program capable of improving throughput while ensuring reliability of communications by MP-TCP. [Solution] A control packet transmission system 100 transmits control packets, via a plurality of wireless communication paths 3, mutually between a request-side device 1 and a response-side device 2 which constitute a client-server system that communicates wirelessly using MP-TCP. Provided are: a request-side device 1 that transmits, to a response-side device 2, via at least one wireless communication path 3, a plurality of first request packets indicating requests to the response-side device 2; and the response-side device 2 that, when the first request packets transmitted by the request-side device 1 are first received, transmits a plurality of first response packets indicating responses to the first request packets via the at least one wireless communication path 3 to the request-side device 1.

IPC Classes  ?

• H04W 76/15 - Setup of multiple wireless link connections
• H04W 48/18 - Selecting a network or a communication service
• H04W 88/06 - Terminal devices adapted for operation in multiple networks, e.g. multi-mode terminals

Abstract

This holographic optical system design method using a holographic optical system model (21) comprises: a step for receiving an optical condition (20) (step S1); a step for generating a holographic optical system model (21) (step S2); a step for setting an initial phase distribution for each of a plurality of holographic optical elements (44, 45) (step S3); and a step for machine-learning the holographic optical system model (21) (step S4).

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G02B 5/32 - Holograms used as optical elements
• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details
• G03H 1/08 - Synthesising holograms

Abstract

A simultaneous translation system includes: an encoder encoding an input word sequence to an intermediate language representation; a chunk-end detecting device detecting an end of a chunk in the word sequence; a word vector reading unit inputting a partial word sequence up to the chunk-end detected by the chunk-end detecting device to the encoder; a decoder and a translated word searching unit receiving the intermediate language representation from encoder as an input, for outputting a translation word sequence corresponding to the partial word sequence; and a translated word sequence storage unit storing the translation word sequences output by decoder and translated word searching unit.

IPC Classes  ?

• G06F 40/44 - Statistical methods, e.g. probability models
• G06F 40/289 - Phrasal analysis, e.g. finite state techniques or chunking

Abstract

[Problem] To provide a wireless signal processing system and a wireless signal processing method for implementing an iterative MUD which makes it possible to shorten calculation time. [Solution] This wireless signal processing system is characterized by comprising: an error calculation means for generating two or more patterns of estimated signals for which the waveform is estimated for each of transmission signals transmitted from two or more second communication stations, and for respectively calculating an estimation error based on the difference between the received signal and the sum of the estimated signals included in the respective generated patterns; a selection means for selecting two or more of the estimated signal patterns on the basis of the respective estimation errors calculated by the error calculation means; a probability calculation means for calculating a probability distribution indicating the distribution of the probability that the estimated signal is the transmission signal, on the basis of the estimation error with respect to the two or more patterns selected by the selection means; and an estimation means for estimating information included in the transmission signal on the basis of the probability distribution calculated by the probability calculation means.

IPC Classes  ?

• H04J 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

12121234561234566) changes the state value of the corresponding node so that a time derivative value of the state value of the corresponding node is the same as a value obtained by adding a noise signal received by the corresponding node to a value obtained by subtracting the state value of the corresponding node from an activation value corresponding to a summed value of signals input to the corresponding node.

IPC Classes  ?

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

Abstract

An object is to prevent eavesdropping in quantum key distribution. A decoding unit decodes a quantum signal incident thereinto. A plurality of detect photons of the decoded quantum signal output from the decoding unit. A signal processing unit detects bits of the decoded quantum signal based on photon detection results of the plurality of detectors. A control unit perform switching processing by switching destinations to which two decoded quantum signals corresponding to one encoding basis are output between the plurality of detectors, and switching the bits detected by the signal processing unit based on the respective photon detection results of the plurality of detectors.

IPC Classes  ?

• H04L 9/08 - Key distribution
• G06N 10/40 - Physical realisations or architectures of quantum processors or components for manipulating qubits, e.g. qubit coupling or qubit control

Abstract

An object is to prevent eavesdropping in quantum key distribution. A photon detector outputs an output current indicating a result of detecting a quantum signal. A current-voltage conversion unit converts the output current into an output voltage signal. An analog-to-digital converter outputs an output voltage signal obtained by analog-digital conversion of the output voltage signal. A signal processing unit performs predetermined signal processing on the output voltage signal, and outputs a photon detection signal indicating a result of detecting the quantum signal. When a time difference between a timing at which the quantum signal is incident into the photon detector and a reference timing determined based on a clock signal is not within a determination range, the photon detection signal is not output from the signal processing unit.

IPC Classes  ?

• H04L 9/08 - Key distribution
• H04L 9/00 - Arrangements for secret or secure communicationsNetwork security protocols

Abstract

This error correcting translation device comprises: a first terminal into which text in a first language is input; a text divider which divides the text into chunks to generate divided text; a translation machine which individually translates each chunk included in the divided text to generate translated chunks in a second language; and an error correction control unit which causes each translated chunk from the translation machine to be displayed individually on a second terminal. The second terminal accepts input of an identifier specifying a mistranslated chunk, and the error correction control unit causes the mistranslated chunk to be displayed on the first terminal in a different manner to other translated chunks, on the basis of the identifier input into the second terminal, and causes the first terminal to accept input of paraphrased text of the text in the first language in response to the display of the mistranslated chunk.

IPC Classes  ?

• G06F 40/289 - Phrasal analysis, e.g. finite state techniques or chunking
• G06F 40/58 - Use of machine translation, e.g. for multi-lingual retrieval, for server-side translation for client devices or for real-time translation

Abstract

The present invention addresses the problem of enabling seamless connection between high-frequency wireless communication and optical communication.　A wireless reception device according to the present invention, which receives a wireless signal modulated into an information signal, comprises: a reception antenna; a laser-emitting element which emits laser light of a prescribed wavelength; a micro-optical resonator which is excited by the laser light and generates an optical frequency comb with a repetition frequency that is different from the carrier frequency of the wireless signal by a difference frequency; a photoelectric conversion element which is provided in a reception unit in the reception antenna and optically modulates, in response to the wireless signal, an arbitrary optical frequency mode among optical frequency modes that constitute the optical frequency comb; and an optical bandpass filter which separates modulated components of the optical frequency mode and separates unmodulated components that are the nearest neighbors to the modulation components of the optical frequency mode in a neighbor frequency mode apart from the optical frequency mode by means of the repetition frequency.

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• G02F 1/03 - 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 ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
• G02F 1/065 - 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 electro-optical organic material in an optical waveguide structure
• H04B 1/18 - Input circuits, e.g. for coupling to an antenna or a transmission line

Abstract

The present invention addresses the problem of enabling seamless connection between high-frequency wireless communication and optical communication.　Provided is a wireless reception device which receives a wireless signal that has been modulated by an information signal, wherein the wireless reception device comprises: a reception antenna, an excitation laser which outputs laser light of a prescribed wavelength; a fine optical resonator which is excited by the laser light and generates an optical frequency comb of which a repetitive frequency is different from the carrier frequency of the wireless signal by a difference frequency; an optical bandpass filter which independently separates an arbitrary optical frequency mode from adjacent optical frequency modes, which are repetitively spaced apart in frequency, among optical frequency modes that compose the optical frequency comb; an optical circulator which injects the separated optical frequency mode and adjacent optical frequency modes to slave lasers respectively having adjacent wavelengths, synchronizes the slave lasers, and performs optical amplification; an electrical/optical conversion element which is provided in a reception unit of the reception antenna and additionally optical-modulates the optical frequency modes in response to the wireless signal; and an optical bandpass filter which separates the modulated components of the adjacent frequency modes and the optical frequency mode adjacent to same.

IPC Classes  ?

• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• 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 1/035 - 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 ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/065 - 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 electro-optical organic material in an optical waveguide structure
• H04B 1/18 - Input circuits, e.g. for coupling to an antenna or a transmission line

Abstract

Provided is a signal generation processing device that achieves audio synthesis processing or image signal generation processing capable of obtaining high-quality audio signals or image signals while maintaining the speed of audio synthesis processing or image signal generation processing. In the signal generation processing device, the first sub-model unit to the N-th sub-model unit each performs training processing for training models included in the first sub-model unit to the Nth sub-model unit using noise levels included in different noise level ranges to obtain trained models. In other words, the signal generation processing device performs processing for each sub-model unit in parallel, thus allowing for performing the training processing at high speed. Further, during prediction processing, the signal generation processing device appropriately selects the sub-model units to be used and performs processing with the selected sub-models, thus allowing for performing audio synthesis processing and image generation processing with high accuracy.

IPC Classes  ?

• G10L 13/027 - Concept to speech synthesisersGeneration of natural phrases from machine-based concepts

Abstract

A federated learning system in which a plurality of local servers repeatedly learn cooperatively through communications between the plurality of local servers and a central server via a network. The local server includes a decryption unit, a mean gradient calculation unit, a model updating unit, a validation error calculation unit, an encryption unit, and a local transmission unit that transmits at least one of a current local mean gradient and a current local validation error. The central server includes a central reception unit, a model selection unit, a weight determination unit, and a central transmission unit. The central reception unit receives encrypted current local models and at least one of current local training data counts, the current local mean gradients, and the current local validation errors from the plurality of respective local servers.

IPC Classes  ?

• G06N 3/098 - Distributed learning, e.g. federated learning

Abstract

An attack information generation apparatus (2000) determines, for each of a plurality of executions of a target attack, the number of occurrences of one or more events by using a log (10) in its execution period. The attack information generation apparatus (2000) determines, for each of the events, whether or not the number of occurrences of that event determined for each of the plurality of executions of the target attack satisfies a predetermined condition. The attack information generation apparatus (2000) generates attack information (30) associating the target attack with the event whose number of occurrences is determined to satisfy the predetermined condition.

IPC Classes  ?

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

Abstract

Provided is a new technique capable of configuring an inferrer for manipulating sentences, even if a corpus for generating teacher data does not exist or is insufficient. This inference system includes: an inferrer which, upon input of one or a plurality or sentences, outputs one or a plurality of sentences corresponding to the one or plurality of input sentences; a creating unit for creating teacher data from a set of first sentences in a first language and third sentences in the first language created by machine translation of second sentences in a second language, being translations of the first sentences; and a training unit for using the teacher data to train the inferrer.

IPC Classes  ?

• G06N 20/00 - Machine learning
• G06F 40/44 - Statistical methods, e.g. probability models

Abstract

[Problem] To provide a non-regeneration relay communication system with which non-regeneration relay communication using full-duplex communication is possible. [Solution] This non-regeneration relay communication system for performing non-regeneration relay communication between a first communication station and a second communication station via a relay station is characterised by comprising: a first delay calculation means which, on the basis of a signal, calculates a first signal-to-noise ratio in the communication between the first communication station and the relay station, and a first transmission delay indicating a delay in the communication between the first communication station and the relay station; a second delay calculation means which, on the basis of a signal, calculates a second signal-to-noise ratio in the communication between the second communication station and the relay station, and a second transmission delay indicating a delay in the communication between the second communication station and the relay station; and a communication determination means which performs the non-regeneration relay communication on the basis of the first signal-to-noise ratio, the first transmission delay, the second signal-to-noise ratio and the second transmission delay.

IPC Classes  ?

• H04B 7/15 - Active relay systems
• H04L 5/02 - Channels characterised by the type of signal

Abstract

This brain response space generation device comprises: a feature amount extraction unit that, for each of at least two or more types of modalities among the senses and language, extracts a feature amount of modality data that causes stimulation; and a brain response space generation unit that, on the basis of a measurement result obtained by a brain activity measurement unit by measuring brain activity when each of the items of modality data is supplied to a test subject, and a feature amount extracted by the feature amount extraction unit, generates a brain response space that is shared by the two or more types of modalities and that indicates an expression space of a brain response to the modality data.

IPC Classes  ?

• G06N 3/08 - Learning methods
• A61B 5/372 - Analysis of electroencephalograms
• G06N 3/004 - Artificial life, i.e. computing arrangements simulating life

Abstract

A radio wave receiver/transmitter 2 executes code reception/transmission with another radio wave receiver/transmitter 2 through a synchronous antenna 27, and acquires, from a temporal and spatial difference information acquisition unit 28, temporal and spatial difference information including both temporal difference information indicating a temporal error from a reference radio wave receiver/transmitter 2 and spatial difference information indicating a spatial error from the reference radio wave receiver/transmitter 2. On the basis of the temporal and spatial difference information, a phase shift adjustment unit 24 controls a phase shift amount of a high-frequency signal emitted from a communication antenna 21 and suppresses reduction in beam quality due to the temporal and spatial errors, by operating a phase shifter 221 of a reception/transmission module 22 so as to correct the temporal and spatial errors.

IPC Classes  ?

• G01S 7/02 - Details of systems according to groups , , of systems according to group
• G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques

Abstract

This speech filtering device, which prevents an output of an expression that can be problematic in an interactive system that outputs speech in an interactive form, comprises: a context model which has been trained in advance to output a probability vector which has, as elements, probabilities in which each word included in a prescribed word group appears in the context in which the speech is placed when receiving an input of a word vector column that represents speech; and a determination unit 456 for inputting, to the context model, the word vector column that represents the speech and determining whether to nullify or approve the speech according to whether a value is equal to or greater than a threshold, the value being determined as a prescribed function of the probability vector output from the context model in response to the input.

IPC Classes  ?

• G06F 40/56 - Natural language generation
• G06F 16/90 - Details of database functions independent of the retrieved data types
• G06F 40/44 - Statistical methods, e.g. probability models

Abstract

[Problem] To provide a measurement system for radio wave propagation characteristics that can measure the radio wave propagation characteristics in space more accurately by excluding the effects of humans and wire cables on the measurement. [Solution] The invention includes a base station 3 and a mobile terminal 20 capable of wireless communication with the base station 3. The base station 3 and mobile terminal 20 are synchronized in time, frequency, and phase with each other. The propagation characteristics of a radio wave that is wirelessly communicated between the mobile terminal 20 moving in the space to be measured and the base station 3 are measured continuously over time by associating the propagation characteristics with each position information of the mobile terminal 20.

IPC Classes  ?

• G01R 29/08 - Measuring electromagnetic field characteristics

Abstract

Provided is a machine translation processing system that can make an accurate machine translation of a text containing a markup language tag for a text to be translated, the machine translation being made while keeping information about the markup language tag without preparing a large number of tagged translations. In a machine translation processing system (1000), a training data generating device (1) performs processing for generating training data, so that a start/end corresponding code is detected in translation data not containing the markup language tag and the detected start/end corresponding code is replaced with an alternative code. Thus, a large amount of data equivalent to translation data with the inserted markup language tag can be easily generated. Moreover, in the machine translation processing system (1000), the translation data acquired by the processing for generating the training data by the training data generating device (1) is used as training data for learning of a machine translation model. Thus, the same effect as learning of the machine translation model can be obtained using the translation data with the markup language tag as training data.

IPC Classes  ?

• G06F 40/44 - Statistical methods, e.g. probability models

Abstract

An utterance data generation device that provides an utterance data creation device, an interaction device, and a training device with which it is possible to efficiently generate cache data in the interaction device, the utterance data generation device including: a cache data generation device 140 that generates, from each of a plurality of passages, cache data including an utterance word string that constitutes a response utterance to an inputted utterance and a key word string that serves as a key by which the utterance word string is retrieved; and a cache data storage device 162 that stores the cache data generated by the cache data generation device 140 such that the cache data can be read out using at least a key word string as the key.

IPC Classes  ?

• G06F 16/90 - Details of database functions independent of the retrieved data types
• G06F 40/56 - Natural language generation

Abstract

An optical waveguide element includes a substrate, an optical waveguide disposed inside the substrate or on the substrate, and an electrode provided along the optical waveguide, working on the optical waveguide to generate a phase change in a light wave propagating through the optical waveguide. The electrode is a traveling-wave electrode. In a modulation section where the light wave is controlled by the electrode, the electrode and the optical waveguide are configured so that the phase change generated in a first modulation section located within a predetermined distance range from a downstream side end portion along a propagation direction of a traveling wave of an electrical signal propagating through the electrode has a sign opposite to a sign of the phase change generated in a second modulation section located within a predetermined distance range from an input end of the electrical signal on an upstream side along the propagation direction.

IPC Classes  ?

• G02F 1/035 - 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 ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect in an optical waveguide structure
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

This perceived speed control device, in response to the occurrence of an event which is either a first event that causes a subject to feel that the speed of an object being visually recognized is faster than an actual speed, or a second event that causes the subject to feel that the speed is slower than the actual speed, sprays a fragrance corresponding to the first event or the second event.

IPC Classes  ?

• A63G 21/04 - ChutesHelter-skelters with fixed rails
• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer

Abstract

In the present invention, an estimating device estimates a mood score for a subject by inputting a brain-wave characteristic amount of the subject, when the subject is listening to audio in which a text is read, to an estimation model generated by machine learning which used a plurality of teaching data sets each configured using a combination of a brain-wave characteristic amount of a training test-subject and a mood score of the training test-subject when same was listening to audio in which a text is read.

IPC Classes  ?

• A61B 5/16 - Devices for psychotechnicsTesting reaction times
• A61B 5/38 - Acoustic or auditory stimuli
• G06N 20/00 - Machine learning

Abstract

A text classifier 90 for answer identification is capable of highly accurate identification of an answer candidate to a question, by effectively using background knowledge related to the question, in order to extract an answer candidate to the question, the text classifier including: a BERT (Bidirectional Encoder Representation from Transformers) receiving a question and an answer candidate as inputs; a knowledge integration transformer receiving the output of BERT as an input; a background knowledge representation generator receiving a question and an answer as inputs and generating a group of background knowledge representation vectors for the question; and a vector converter respectively converting the question and the answer candidate to embedded vectors and inputting the same to the background knowledge representation generator. The knowledge integration transformer receives the group of background knowledge representation vectors as attention and outputs a label indicating whether the answer candidate includes the correct answer to the question.

IPC Classes  ?

• G06F 40/40 - Processing or translation of natural language
• G06F 16/35 - ClusteringClassification
• G06F 16/332 - Query formulation

Abstract

[Problem] To provide a communication control system, a device, and a method for resources and networks in a satellite-ground connection system which make it possible to construct and optimize a flexible and global communication network in response to a request from a user. [Solution] This communication control system is characterized by comprising a non-terrestrial link control means for controlling non-terrestrial communication between a non-terrestrial node group including a non-terrestrial communication station and a terrestrial node group including a terrestrial communication station and a terrestrial resource control means for controlling terrestrial communication between the terrestrial node group and one or more communication terminals and is characterized in that the non-terrestrial link control means calculates a non-terrestrial line parameter for controlling the non-terrestrial communication on the basis of monitoring information and the terrestrial resource control means calculates a terrestrial line parameter for controlling the terrestrial communication on the basis of the monitoring information and the non-terrestrial line parameter.

IPC Classes  ?

• H04W 28/18 - Negotiating wireless communication parameters
• H04W 84/06 - Airborne or Satellite Networks

Abstract

The present disclosure provides an optical control element having an optical waveguide formed of an electro-optic material, and methods of use thereof.

IPC Classes  ?

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

Abstract

An image reproduction device reproduces an image including N different parameters of a wavelength range or the like, and includes: a multiple hologram acquisition part that acquires N to 2N multiple holograms obtained by multiplex-recording interference patterns for each parameter; a parameter selection part that selects the parameters one by one; a hologram generation part that generates a computer generated hologram containing two lightwaves having the selected parameter, from the multiple hologram; and a lightwave restoration part that restores one of the two lightwaves from the computer generated hologram.

IPC Classes  ?

• G03H 1/26 - Processes or apparatus specially adapted to produce multiple holograms or to obtain images from them, e.g. multicolour technique

Abstract

[Problem] To achieve, with a simple configuration, a variable optical attenuator that is capable of individually adjusting the amount of light that propagates through a plurality of cores. [Solution] A variable optical attenuator 10 which receives input of light that propagates through a first optical fiber 41 having a plurality of cores, which individually adjusts the amount of light that has propagated through each core, and which outputs the light to a second optical fiber 42 having a plurality of cores. The variable optical attenuator 10 comprises a separation optical system 11, 12 that spatially separates a plurality of light beams emitted into a space from the plurality of cores of the first optical fiber 41, and optical attenuation means 15(a), 15(b) that are capable of individually adjusting that attenuation amount of the plurality of light beams separated by the separation optical system 11, 12.

IPC Classes  ?

• G02B 6/26 - Optical coupling means
• G02B 6/02 - Optical fibres with cladding
• G02B 26/02 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/13 - 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 liquid crystals, e.g. single liquid crystal display cells

Abstract

This invention efficiently executes message sharing performed by a plurality of users that use a secret communication network. A control device 100 controls a network that includes a plurality of user nodes and links which connect two user nodes and have a key assigned thereto. The control device comprises: a dividing unit 110 that divides the plurality of user nodes into a plurality of groups; a first instruction unit 120 that instructs each user node to use a key to collect messages that a prescribed number of user nodes have; a second instruction unit 130 that instructs a particular node in the network to use a key to collect messages that a plurality of user nodes belonging to a group have had from the beginning; a third instruction unit 140 that instructs the particular node to calculate an exclusive OR of the plurality of messages and transmit the results to a user node without using the key; and a fourth instruction unit 150 that instructs each user node to obtain a message of another user node not yet obtained by the relevant user node.

IPC Classes  ?

• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
• H04L 9/18 - Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems

Abstract

The present invention achieves a simultaneous interpretation system capable of performing machine translation processing and speaker identification processing in real-time. In a simultaneous interpretation system 1000, a segment processing unit 2 of a simultaneous interpretation device 100 executes high-speed, high-accuracy segment processing to acquire sentence data, and can acquire data relating to a time range in which word strings contained in the sentence data were spoken, and therefore machine translation processing and speaker identification processing can be executed in real-time. In other words, in the simultaneous interpretation system 1000, processing to predict a speaker who has spoken in a period specified by time range data is executed on the basis of an input video stream and the time range data, in parallel with execution of machine translation processing by a machine translation processing unit 4 with respect to the sentence data acquired by the high-speed, high-accuracy segment processing, and therefore machine translation processing and speaker identification processing can be carried out using real-time processing.

IPC Classes  ?

• G10L 15/00 - Speech recognition
• G10L 17/00 - Speaker identification or verification techniques

Abstract

An AR optical element having high image quality, high efficiency of light utilization, and small-size is provided. The AR optical element has periodic structures of refractive index multiplexed with a predetermined interval and predetermined multiplicity, wherein each of the periodic structures of refractive index has an optical normal in a different direction from a physical normal orthogonal to a plane of a micro-region that reflects incident light.

IPC Classes  ?

• G02B 5/32 - Holograms used as optical elements
• G02B 30/60 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images involving reflecting prisms and mirrors only
• G03H 1/04 - Processes or apparatus for producing holograms

Abstract

A method of producing a nonlinear optical device is provided. In a surface of a semiconductor substrate, a recessed part is formed. In an environment under reduced pressure, the first liquid material is filled into the recessed part. A second liquid material is brought into contact with a first liquid material filled in the recessed part, and thereby a third liquid material is prepared. The third liquid material is solidified, and thereby an embedded portion is formed. The first liquid material includes a first solute and a first solvent, or the first liquid material consists of the first solvent. The second liquid material includes a second solute and a second solvent. The second solute includes a nonlinear optical polymer. The concentration of the second solute in the second liquid material is higher than the concentration of the first solute in the first liquid material.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G02F 1/361 - Organic materials

Abstract

This optical element comprises a plurality of columnar bodies formed by a material having a prescribed dielectric constant and disposed on a flat surface of a transparent substrate through which light is transmitted in a matrix pattern. Each of the columnar bodies is configured to: perform phase adjustment on output light which is the result of the foregoing light which was input being transmitted and output, such phase adjustment being on the basis of the dielectric constant, the cross-sectional shape of the columnar body in a direction parallel to the flat surface, and the length of the columnar body in a normal direction which is the direction normal to the flat surface; and to adjust deflection characteristics in the normal direction, lens characteristics that condense light in the normal direction, and polarization characteristics in the normal direction, such that the output light having desired polarization characteristics is outputted.

IPC Classes  ?

• G02B 1/02 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of crystals, e.g. rock-salt, semiconductors
• G01N 21/03 - Cuvette constructions

Abstract

An inference device 50 that is capable of operating quickly and with satisfactory precision by using few computational resources: includes a first neural network 80 that outputs a vector representation of a first input and a second neural network that outputs a vector representation of a second input; uses training data of the first and second inputs, which have a prescribed relationship, to train the first and second neural networks so as to be closely positioned in a vector space if the vector representations of the first and second inputs are in a prescribed relationship; clusters the vector representations which are the output of the trained second neural network; further includes a database 84 constructed in advance such that clusters can be searched for and extracted on the basis of the vector representation of the first input; and, in response to an input 60, infers output on the basis of information 88 of clusters searched for and extracted from the database 84 on the basis of the vector representation of the input from the first neural network.

IPC Classes  ?

• G06F 16/90 - Details of database functions independent of the retrieved data types
• G06F 16/901 - IndexingData structures thereforStorage structures
• G06F 40/56 - Natural language generation

Abstract

A time synchronization network able to efficiently maintain time synchronization according to standard time is described. A communication device includes a time information output unit and a time synchronization unit. The time information output unit is configured to output time information with an internal clock that is stable. The time synchronization unit is configured to correct the time information of the time information output unit based on information on a time difference between the communication device and another communication device adjacent to the communication device.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements

Abstract

12112122) of the ground station (3B).

IPC Classes  ?

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

Abstract

The present invention realises a radio wave reflector capable of satisfactorily reflecting radio waves of a prescribed frequency. A radio wave reflector 10 has layered therein, in order from a radio wave 1 incidence surface side thereof, a first dielectric layer 11, a resistance layer 12, a second dielectric layer 13, and a reflection layer 14. When the centre wavelength of radio waves reflected by the radio wave reflector is represented by λ, the thickness d of the second dielectric layer satisfies d = λ / 2.

IPC Classes  ?

• H01Q 15/14 - Reflecting surfacesEquivalent structures
• B32B 7/025 - Electric or magnetic properties
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

An optical aberration correction program causing a computer (3) to execute: obtaining phases of a plurality of provisional optical transfer functions of an optical system (10) corresponding to a plurality of provisional optical aberration amounts of the optical system; generating a plurality of three-dimensional phase-modulated images by deconvolving a three-dimensional original image of a sample (12) including an optical aberration of the optical system (10) with each of the phases of the plurality of provisional optical transfer functions; obtaining an optimal theoretical three-dimensional point spread function based on indices of luminance values of the plurality of three-dimensional phase-modulated images; and calculating a three-dimensional correction image by deconvolving the three-dimensional original image or another three-dimensional original image that includes the optical aberration of the optical system (10) and is different from the three-dimensional original image with an optimal optical transfer function corresponding to the optimal theoretical three-dimensional point spread function.

IPC Classes  ?

• G06T 17/00 - 3D modelling for computer graphics
• G02B 21/06 - Means for illuminating specimen
• G02B 21/36 - Microscopes arranged for photographic purposes or projection purposes

Abstract

Provided is a pseudo parallel translation data generation apparatus for generating pseudo parallel translation data for accurately performing machine translation in an adaptation target domain even when there exists no parallel translation data for the adaptation target domain. Using other-domains parallel translation data D0(L1-L2), other-domains first language data D0(L1), other-domains second language D0(L2), adaptation target domain first language data D0(R1), and adaptation target domain second language data D0(R2), the pseudo parallel translation data generation apparatus 100 performs optimization processing for a cross-lingual language model including an input data embedding unit 2 and an XLM processing unit 3, and performs parameter optimization processing for a pseudo parallel translation data generation NMT model including the input data embedding unit after the optimization processing and a machine translation processing unit 5. Performing processing using the pseudo parallel translation data generation machine translation model obtained by the parameter optimization processing allows for obtaining pseudo parallel translation data for the adaptation target domain for which no parallel translation data sets exist.

IPC Classes  ?

• G06F 40/58 - Use of machine translation, e.g. for multi-lingual retrieval, for server-side translation for client devices or for real-time translation
• G06N 3/09 - Supervised learning

Abstract

An electro-optic polymer element (1) comprises an optical waveguide (15) and a first antenna electrode (21). The optical waveguide (15) includes a core layer (17) formed of an electro-optic polymer. The first antenna electrode (21) includes a first upper-side antenna electrode (26) and a first lower-side antenna electrode (22). Electro-optic molecules of the electro-optic polymer are arranged along the normal direction of a first principal surface (15a) of the optical waveguide (15). In a plan view of the first principal surface (15a), a first edge (27) of the first upper-side antenna electrode (26) and a second edge (23) of the first lower-side antenna electrode (22) are each superposed on the core layer (17) or are separated from the core layer (17) a distance of 20 µm or less in the width direction of the core layer (17).

IPC Classes  ?

• G02F 1/065 - 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 electro-optical organic material in an optical waveguide structure
• G01J 1/02 - Photometry, e.g. photographic exposure meter Details

Abstract

This language model learning device, for providing a language model learning device whereby a large-scale language model can be learned with low computational cost independent of speech synthesis and speech recognition performance, includes a conversion means for converting text of natural language to output a symbol string of phonetic symbols, and a learning means for performing learning of a language model using the text and the symbol string outputted by the conversion means.

IPC Classes  ?

• G10L 15/06 - Creation of reference templatesTraining of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice

Abstract

[Problem] Since a high-temperature process is required when adding impurities to a single crystal semiconductor film by means of ion implantation or by means of thermal diffusion, it has been difficult to form a steep impurity profile. [Solution] A production method for a single crystal semiconductor film by means of crystal growth using a magnetron sputtering device to which one or a plurality of group 14 semiconductor targets are mounted, the method being characterized in that: at least one of the targets is doped with impurities; the film-forming temperature is 300°C or higher; the growth rate is 10 nm or less per minute; the sputtering gas is an inert gas; and sputtering of the one or plurality of targets is carried out simultaneously.

IPC Classes  ?

• H01L 21/203 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using physical deposition, e.g. vacuum deposition, sputtering
• C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
• C23C 14/34 - Sputtering
• C30B 23/08 - Epitaxial-layer growth by condensing ionised vapours
• C30B 29/06 - Silicon
• C30B 29/08 - Germanium

Abstract

A device for identifying the number of photons included in an optical signal from a light source, the device comprising: a light detection unit including a light-receiving unit that is formed from a single-pixel nanostrip disposed in a predetermined light-receiving surface region and that generates an electrical signal corresponding to the optical signal in a superconducting state, and a vibration-imparting unit that is connected to the light-receiving unit and that has electrical circuit characteristics for imparting, to an electrical signal, an amplitude vibration component corresponding to the number of photons; a power supply unit for supplying a bias current to the light detection unit; an amplification unit for amplifying the electrical signal; and a cryostat in which the light detection unit and the amplification unit are housed, and which operates at a temperature at which the light-receiving unit exhibits a superconducting state.

IPC Classes  ?

• G01J 1/02 - Photometry, e.g. photographic exposure meter Details
• G01J 11/00 - Measuring the characteristics of individual optical pulses or of optical pulse trains
• H10N 60/00 - Superconducting devices

Abstract

[Problem] To obtain an optical processing condition for compensating mode dispersion with minimal calculation time and power consumption for mode dispersion compensation, the optical processing condition being capable of supporting high-speed signals and transmission paths having a large amount of mode dispersion. [Solution] Provided is a method for acquiring mode dispersion compensation information for obtaining an optical processing condition for compensating mode dispersion in mode-division multiplex transmission using a multimode fiber, the mode-division multiplex transmission including up to Mth (M being an integer) modes, and the method comprising: a light propagation step in which, in each of a first mode to the Mth mode in the mode-division multiplex transmission, an optical probe signal is transmitted from a mode multiplexer and a multimode fiber is propagated; a frequency response measurement step in which is measured a frequency response of a complex amplitude of the optical probe signal that has propagated the multimode fiber; and a mode dispersion compensation information acquisition step in which the frequency responses of the complex amplitudes of the first to Mth modes are used to acquire mode dispersion compensation information including a loss difference and a group delay difference between modes in the mode-division multiplex transmission.

IPC Classes  ?

• H04J 14/04 - Mode multiplex systems
• 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
• H04B 10/2507 - Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion

Abstract

The present invention efficiently communicates information while maintaining high confidentiality in a network where eavesdropping, errors, and falsification occur. A control device for a communication network having a plurality of nodes and links that each connect two of the nodes comprises: a first instruction unit 110 for instructing a source node among the plurality of nodes as to whether or not to perform MRD encryption when the source node performs transmission; a random number transmission unit 120 for transmitting a random number that corresponds to the maximum number of links that are likely to be eavesdropped to the source node when the source node is instructed by the first instruction unit to perform MRD encryption; and a second instruction unit 130 for instructing each of the plurality of nodes as to whether or not to perform OTP encryption when the node performs transmission to another node.

IPC Classes  ?

• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
• H03M 13/47 - Error detection, forward error correction or error protection, not provided for in groups
• H04L 9/18 - Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems
• H04L 12/22 - Arrangements for preventing the taking of data from a data transmission channel without authorisation

Abstract

An information processing system according to the present invention includes: a facial texture reconstruction unit which reconstructs the texture of a face from a 2D video of a person filmed by a camera; a facial shape reconstruction unit which reconstructs the 3D shape of the face from the 2D video of the person; a pose estimation unit which estimates the pose of the person from the 2D video of the person; a shape integration unit which reconstructs the 3D shape of a body corresponding to the pose estimated on the basis of 3D shape data and reconstructs the 3D shape of the person by integrating the 3D shape of the body which has been reconstructed and the 3D shape of the face which has been reconstructed; a texture reconstruction unit which reconstructs a texture image of the person by blending a texture image of the reconstructed face with a texture image included in texture data; and a model generation unit which generates a 3D model of the person on the basis of the 3D shape of the person filmed by the camera and the texture image of the person filmed by the camera.

IPC Classes  ?

• G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• G06T 15/04 - Texture mapping

Abstract

Provided is an antenna module suitable for use in a signal frequency band from several tens of GHz to 100 GHz or more.　The antenna module includes a substrate in which at least the uppermost surface is a single crystal of silicon carbide, a single crystal graphene layer provided in contact with the uppermost surface of the substrate, and a gallium nitride layer provided on the substrate. This antenna module is characterized in that an antenna element portion formed by patterning a region of the graphene layer that is not covered with the gallium nitride layer, an active element portion formed on the gallium nitride layer, and a connecting portion connecting the antenna element portion to the active element portion are formed integrally.

IPC Classes  ?

• H01Q 23/00 - Antennas with active circuits or circuit elements integrated within them or attached to them
• C01B 32/184 - Preparation
• H01L 21/338 - Field-effect transistors with a Schottky gate
• H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT
• H01L 29/812 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a Schottky gate
• H01P 11/00 - Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

A sender system 2 comprises: a transmission optical unit 20 that transmits, via a line of sight communication path 4, an encoded light signal 40 at a pre-set intensity; and a key distillation unit 21 that generates a cryptographic key from a random number bit string of the transmission optical unit 20, by means of key distillation processing via an authenticated public communication path 5. A regular recipient system 3 comprises: a reception optical unit 30 that receives, via the line of sight communication path 4, the light signal 40 from the transmission optical unit 20; and a key distillation unit 31 that generates a cryptographic key from a random number bit string of the reception optical unit 30 by means of key distillation processing via the authenticated public communication path 5.

IPC Classes  ?

• H04L 9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
• H04B 10/112 - Line-of-sight transmission over an extended range
• H04B 10/70 - Photonic quantum communication

Abstract

It is provided a synchronization system capable of managing execution of synchronization for clocks to be mounted on various devices. A synchronization system of clocks comprising: a leader device; a follower device capable of establishing communication connection with the leader device; and a server apparatus capable of establishing communication connection with the leader device and/or the follower device, the system further comprising: a time deviation calculator configured to calculate a time deviation between the leader device and the follower device; and a time corrector configured to correct a time in the follower device based on the calculated time deviation, wherein the synchronization system executes the time deviation calculator and/or the time corrector when the server apparatus generates, transmits, and/or receives predetermined information.

IPC Classes  ?

• G06F 1/12 - Synchronisation of different clock signals

Abstract

A learning system according to one aspect of the present invention presents a question to a learner, receives an answer to the question from the learner, and after answering is complete, presents the correct answer of the question to the learner. In a case where the learner’s answer to the presented question is incorrect, the learning system acquires measurement data of brain waves from when the correct answer to the incorrectly answered question was presented to the learner, and calculates the intensity of feedback-related negativity from the acquired measurement data. In accordance with the calculated intensity of the feedback-related negativity and the incorrectly answered question, the learning system acquires the next question to be presented.

IPC Classes  ?

• G09B 7/04 - Electrically-operated teaching apparatus or devices working with questions and answers of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by the student characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question, supplying a further explanation

Abstract

In performing wireless communication between terminals to perform time difference measurement and propagation time measurement, first and second terminals that transmit a signal at least once in attempting space-time synchronization are included. The first terminal measures a reception phase of a locally transmitted signal, and a reception phase of a signal transmitted by the second terminal, adds a positive or negative phase to the measured reception phase, and makes a report to the second terminal. The second terminal measures a reception phase of a locally transmitted signal, and a reception phase of a signal transmitted by the first terminal, and makes a report to the first terminal. The first and second terminals obtain a time difference or propagation time according to a reception phase measured by a local device and reported from a counterpart, and obtain additional information based on a phase reflected in the time difference or propagation time.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04W 24/10 - Scheduling measurement reports
• H04W 24/08 - Testing using real traffic

Abstract

AABAAABABBABBBABAB. The terminal 2 and the terminal 3 by themselves perform measurement, or obtain mutual time difference or propagation time period on the basis of the reception phase notified by the other party and acquire information based on a phase Δφ reflected in the obtained time difference or propagation time period.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04W 12/00 - Security arrangementsAuthenticationProtecting privacy or anonymity
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

[Problem] To provide an aerosol concentration inference method and system that do not require a large-scale device. [Solution] This method for inferring an aerosol concentration in a target region using a computer includes: a physical quantity acquisition step for acquiring a physical quantity from a sample image in which the target region has been imaged; an estimation numerical value acquisition step for obtaining an estimation numerical value for inferring the aerosol concentration using the physical quantity; and an aerosol concentration inferring step for inferring the aerosol concentration using the estimation numerical value.

IPC Classes  ?

• G01W 1/00 - Meteorology
• G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection

Abstract

Provided is a learning method for Drosophila that can be performed even when the brain is exposed for observation. The method according to the present invention is a method for imparting a conditioned stimulus to Drosophila, wherein limb retraction from an object already grasped by the limb is imparted to Drosophila as a conditioned stimulus.

IPC Classes  ?

• G01N 33/48 - Biological material, e.g. blood, urineHaemocytometers
• C12N 5/07 - Animal cells or tissues

Abstract

A system for estimating an imbalance between electrical-optical responses of an in-phase (I) channel and a quadrature (Q) channel in an optical amplitude and phase modulator (optical IQ modulator) includes an optical detector (PD), an analog-digital converter (ADC), and an imbalance operation unit that estimates an imbalance between electrical-optical responses of an I channel and a Q channel in the optical IQ modulator, wherein the imbalance operation unit includes an input signal information receiving unit that receives information regarding a first modulation signal, and an intensity information receiving unit that receives intensity information of the digitalized output signal from the ADC, and the imbalance operation unit estimates an imbalance between electrical-optical responses of an I channel and a Q channel in the optical IQ modulator using information regarding a first modulation signal and intensity information of the digitalized output signal.

IPC Classes  ?

• H04B 10/516 - Details of coding or modulation
• H04B 10/564 - Power control
• H04B 10/61 - Coherent receivers