Abstract

An estimation device (10) includes a data acquisition unit (131), a first smoothing processing unit (132), a second smoothing processing unit (133), a calculation unit (134), and an estimation unit (135). The data acquisition unit (131) acquires time-series data of a pupil diameter during work of a subject of work performance estimation. The first smoothing processing unit (132) smooths the acquired time-series data of the pupil diameter of the subject by a first time window. The second smoothing processing unit (133) smooths the time-series data of the pupil diameter by a second time window that is a time window larger than the first time window. The calculation unit (134) calculates a difference between the time-series data of the pupil diameter smoothed by the first time window and the time-series data of the pupil diameter smoothed by the second time window. The estimation unit (135) estimates the level of work performance of the subject on the basis of the calculated magnitude of the difference, and outputs a result of the estimation.

IPC Classes  ?

• G06Q 10/0639 - Performance analysis of employees; Performance analysis of enterprise or organisation operations
• G06T 7/254 - Analysis of motion involving subtraction of images
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume

Abstract

An object of the present disclosure is to make multipath technology applicable to UDP. An object of the present disclosure is to make multipath technology applicable to UDP. The present disclosure is a communication system in which a plurality of communication devices are connected via a plurality of networks, wherein one of the plurality of communication devices reads application data stored in a UDP payload, and stores information on a multipath option as a part of the application data, and the other one of the plurality of communication devices reads application data stored in a UDP payload, acquires information on a multipath option from the application data, and executes communication via the plurality of networks on the basis of the acquired information on the multipath option.

IPC Classes  ?

• H04L 45/24 - Multipath
• H04L 69/14 - Multichannel or multilink protocols
• H04L 69/164 - Adaptation or special uses of UDP protocol

Abstract

Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including: a directivity control device including at least one directivity control unit that generates a first processed acoustic signal from a first acoustic signal and generates a second processed acoustic signal from a second acoustic signal having an opposite phase to the first acoustic signal by executing predetermined signal processing; and a speaker system including at least one speaker unit pair including a positive speaker unit that emits a sound based on the first processed acoustic signal and a negative speaker unit that emits a sound based on the second processed acoustic signal, in which the signal processing executed by the directivity control unit is processing of causing a sound emitted from the positive speaker unit of the speaker unit pair and a sound emitted from the negative speaker unit of the speaker unit pair to be audible in an area to be made audible near the speaker unit pair and to be inaudible in an area to be made inaudible.

IPC Classes  ?

• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H04R 5/02 - Spatial or constructional arrangements of loudspeakers

Abstract

A vibration measurement presentation plate (160) is a substantially transparent plate and is disposed on a use position side of a user. A display (130) is disposed outside of an imaging range of the camera on a side opposite to the use position side with respect to the plate such that the plate side serves as a display surface. A camera (120) is disposed on the opposite side with respect to the plate and is outside of the viewing range of the display surface of the display via the plate from the use position side so that the plate side is in the imaging range. A vibration measurement sensor (140) and a vibrator (150) are attached to the plate to be out of the imaging range of the camera and out of the viewing range of the display surface of the display via the plate from the use position side.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• H04N 23/53 - Constructional details of electronic viewfinders, e.g. rotatable or detachable

Abstract

An information processing system includes: an acquisition unit configured to divide a target area into a plurality of meshes of a predetermined size, and acquire mesh data indicating the environment of the target area with height information about the plurality of meshes on a per-mesh basis; a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point to a reception point on the basis of the mesh data, a radio wave being transmitted at the transmission point, the radio wave being received at the reception point; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, on the basis of the mesh data, and height information about the transmission point and the reception point; and a radio field intensity calculation unit configured to calculate an intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined by the second ray tracing unit.

IPC Classes  ?

• G06T 15/06 - Ray-tracing
• G06T 15/50 - Lighting effects
• G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation

Abstract

A power control device includes a supply power prediction unit that determines excess or deficiency of a power supply state according to a power supply and demand situation for each server deployed in a data center that changes at least one of a total number of servers operating in the data center and a power setting of each server in operation so as to eliminate excess or deficiency of the power supply state. The power control unit further changes disposition on a server of a service program operating on each server depending on the power supply state.

IPC Classes  ?

• H04L 41/0833 - Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for reduction of network energy consumption
• H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading

Abstract

A communication design support apparatus includes: a propagation model storage unit that stores a propagation model; an acquisition unit that acquires point cloud data of a structure and measurement data of radio wave intensities in a plurality of frequency bands; a parameter update unit that updates a parameter of the propagation model based on the acquired data; and an estimation unit that estimates propagation loss based on the propagation model.

IPC Classes  ?

• H04B 17/391 - Modelling the propagation channel
• H04B 17/309 - Measuring or estimating channel quality parameters

Abstract

In a data processing device, a fixed-point position control unit determines, as first control. The fixed-point position control unit causes a detection calculation unit to perform calculation processing on processing target data at a processing point in time. The saturation rate control unit instructs, as second control to be repeated by the fixed-point position control unit, the fixed-point position control unit to move at least the fixed-point position as control to increase a lower limit saturation rate proportional to a magnitude of a counted lower limit counter value with respect to a result of the first control. The fixed-point position control unit performs, as the second control, a predetermined determination on the basis of the instruction from the saturation rate control unit and the metadata, determines the fixed-point position moved for each layer, and causes calculation processing to be performed.

IPC Classes  ?

• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means

Abstract

An object of the present disclosure is to perform appropriate communication quality control even when a terminal out of management of a controller is connected to an access point. An object of the present disclosure is to perform appropriate communication quality control even when a terminal out of management of a controller is connected to an access point. The present disclosure is a control system for controlling traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit a packet via the wireless network; and a controller that performs transmission control with respect to the terminal and the access point, in which the controller notifies the access point of information of a terminal under management of the own device, and the access point collates information of the terminal a notification of which has been given with information of a terminal connected to the own device, and suppresses notification of transmission permission to an unmanaged terminal different from a terminal under management of the controller.

IPC Classes  ?

• H04W 28/12 - Flow control using signalling between network elements
• H04W 48/02 - Access restriction performed under specific conditions
• H04W 88/12 - Access point controller devices

Abstract

A transmission power controller includes: a control unit that outputs, within a range not exceeding a TPC set point, a TPC controlled variable that increases transmission power of a transmission system device more in a case of a larger attenuation of a reception signal received from a communication satellite; a data accumulation unit that accumulates the TPC controlled variable; an appropriate value extraction unit that extracts, as a TPC appropriate set point, the largest TPC controlled variable among the accumulated TPC controlled variables except a top predetermined proportion; and an updating unit that outputs, to the transmission system device, a reference transmission power increase signal that increases the reference transmission power more in a case of a larger difference between the TPC set point and the TPC appropriate set point and updates the TPC set point with the TPC appropriate set point. Thereby, efficient use of a transmitter is enabled.

IPC Classes  ?

• H04B 7/185 - Space-based or airborne stations
• H04W 84/06 - Airborne or Satellite Networks

Abstract

The purpose of the present invention is to provide a position detection server and a position fluctuation identification method capable of readily identifying a positional shift of a device group constituting an IoT service without human intervention to the extent possible, and increasing the reliability of IoT data.　A position detection server 13d according to the present invention is provided in a data accumulation system in which terminals 11 transmit information to a management node 13 at desired timing, and the management node 13 stores the information on a per terminal 11 basis. The position detection server 13d is characterized by further comprising a position calculation unit 13d3 that compares, for each of the terminals 11, the information from the past and the information most recent, stored in the management node 13, and sets the terminal 11 having a discrepancy between the information from the past and the information most recent as a terminal 11-1 in which a position fluctuation occurred.

IPC Classes  ?

• G01S 19/23 - Testing, monitoring, correcting or calibrating of a receiver element

Abstract

A field-effect transistor according to the present invention comprises: a gate (13) formed from a plurality of intersecting electrode wires; a plurality of source electrodes (11); a plurality of drain electrodes (12); and a feed section (14) connected to one end of at least one of the plurality of electrode wires, wherein the plurality of source electrodes and the plurality of drain electrodes are disposed alternately in each of areas delimited by the plurality of electrode wires.　As a result, the present invention can provide a field-effect transistor having a low gate resistance and capable of high-power and high-frequency operation with large current drive capability.

IPC Classes  ?

• H01L 29/812 - Field-effect transistors with field effect produced by a PN or other rectifying junction gate with a Schottky gate
• H01L 21/338 - Field-effect transistors with a Schottky gate
• H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT

Abstract

An optical amplifier according to the present disclosure uses a utilization rate of excitation light in an OPA to cause the OPA to maximally and stably exhibit performance without extracting a part of signal light on a path of the signal light. The optical amplifier according to the present disclosure comprises two blocks, which are an excitation light generation unit and an optical parametric amplification unit. Further, a stabilization mechanism for excitation light output and a stabilization mechanism for the optical parametric amplifier are provided to each of the two blocks. A variable splitting-ratio coupler is provided between the two blocks and a splitting-ratio characteristic of the variable splitting-ratio coupler is used to control the two stabilization mechanisms mentioned above. Each stabilization mechanism includes control at a low speed for a temperature adjuster and control at a higher speed for a control target other than the temperature adjuster.

IPC Classes  ?

• G02F 1/39 - Non-linear optics for parametric generation or amplification of light, infrared, or ultraviolet waves

Abstract

To solve the problems, the purpose of the present invention is to provide a design method for calculating optical transmission system parameters satisfying conditions required for an optical transmission system using a light source such as an LED and a bundled optical fiber as an optical transmission path.　A design method according to the present invention designs an optical transmission system 301 comprising a light source 11 that outputs light L1, a bundled optical fiber 36 obtained by bundling a plurality of optical fibers and transmitting the light L1, a plurality of radiation units 13 each radiating light L2 to each radiation target area, and a plurality of single-core optical fibers 51a separated from the bundled optical fiber 36 and propagating light to each radiation unit 13, the design method being characterized by adjusting the parameters of the optical transmission system 301 such that the power of the light L2 output by each radiation unit 13 and calculated by using the parameters is a value considering energy required for each radiation target area.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements
• G02B 6/04 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
• F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems

Abstract

One aspect of the present invention provides an optical communication control device that comprises: a plurality of wavelength selection switches each of which have a parent port and a plurality of child ports; a spatial switch in which the connection relationship between input ports and output ports is changeable, some of the input ports are connected to the parent ports of some of the plurality of wavelength selection switches, and some of the output ports are connected to the child ports of others of the plurality of wavelength selection switches; a plurality of line cascade fibers, respective one ends of which are connected to others of the input ports and the respective other ends of which are connected to the parent ports of the wavelength selection switches connected to the output ports; a plurality of client cascade fibers, respective one ends of which are connected to some others of the output ports and the respective other ends of which are connected to the child ports of the wavelength selection switches connected to the input ports; and a control unit which controls operation of the spatial switch.

IPC Classes  ?

• H04L 12/66 - Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• H04L 12/46 - Interconnection of networks

Abstract

Provided is a method for manufacturing a wavelength conversion element, including: a first step for forming an optical waveguide core substrate that has at least one periodic polarization-reversed region having a secondary nonlinear effect; a second step for joining the optical waveguide core substrate and a substrate that has a lower refractive index than the optical waveguide core substrate in at least a range of used optical wavelengths to form a joined substrate, and configuring the optical waveguide core substrate as a thin film to form an optical waveguide core layer; and a third step for processing the optical waveguide core layer of the joined substrate to form an optical waveguide core, wherein, in the third step, the polarization reversal period of a periodic polarization reversal structure of the formed optical waveguide core is adjusted at least locally by selecting the formation position of the optical waveguide core with respect to the at least one periodic polarization-reversed region.

IPC Classes  ?

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

Abstract

A field effect transistor includes a first etching stop structure and a second etching stop structure. The first etching stop structure is formed on a first side surface of a recess region that is a boundary between a cap layer on a side of a source electrode and the recess region. The second etching stop structure is formed on a second side surface of the recess region that is a boundary between the cap layer on a side of a drain electrode and the recess region.

IPC Classes  ?

• H01L 29/40 - Electrodes
• H01L 29/205 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds in different semiconductor regions
• H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
• H01L 29/423 - Electrodes characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
• H01L 29/66 - Types of semiconductor device
• H01L 29/778 - Field-effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT

Abstract

An SIP server (21) of a receiving side service provider (21D) includes an SIP reception unit (52) that receives a call signal originated in a calling side terminal (11) for a receiving side terminal (31) as a transmission destination, an SIP processing unit (54) that determines that a warning signal is necessary in a case where a combination of a number conversion history of the call signal set by an SIP server (22) that has transferred the call signal by a transfer service involving number conversion and calling side information of the calling side terminal (11) set in the call signal meets a specific condition, and a call processing unit (53) that transmits the warning signal to the receiving side terminal (31) before transmitting the call signal to the receiving side terminal (31) according to the determination of the SIP processing unit (54).

IPC Classes  ?

• H04M 3/436 - Arrangements for screening incoming calls
• G10L 15/08 - Speech classification or search
• H04M 1/663 - Preventing unauthorised calls to a telephone set

Abstract

An information processing device 1 includes a calculation unit 13 that calculates a degree of overlapping between a probability distribution of each probability value included in a row i or a column i of a semantic similarity matrix, and a probability distribution of respective probability values included in a row j or a column j (j≠i) of the waveform similarity matrix as a degree of unexpectedness between an i-th word and a j-th word using the semantic similarity matrix in which elements are probability values in one row or one column of a semantic similarity between words of a plurality of words and the waveform similarity matrix in which elements are probability values in one row or one column of a waveform similarity between time-series data of time-series data related to the words.

IPC Classes  ?

• G06F 17/18 - Complex mathematical operations for evaluating statistical data
• G06F 40/20 - Natural language analysis

Abstract

A delivery control device generates a recognition index on a notification space basis, the recognition index used to recognize the notification space, displays the recognition index in the notification space, and stores the recognition index in management information. The delivery control device instead stores an image characteristic extracted from a content to be displayed in the notification space as the recognition index in the management information. In this state, the delivery control device selects a notification space viewable on the augmented reality display terminal based on information on the position of the augmented reality display terminal held by a user and information on the position of the notification space and transmits the recognition index corresponding to the selected notification space and a notification content to the augmented reality display terminal. In response to the above, the augmented reality display terminal extracts the recognition index from the captured real-life video images and superposes the notification content in the position corresponding to the extracted recognition index in the real-life video images to generate and display augmented reality notification video images.

IPC Classes  ?

• G06T 19/00 - Manipulating 3D models or images for computer graphics

Abstract

An optical waveguide includes a cladding layer, a Si layer, a REO layer, and a cap layer. The REO layer is made of a single-crystal rare earth oxide, and is formed on the Si layer. The cap layer is formed on the REO layer. The cap layer may be made of a material transparent to light to be guided. The cap layer has a stripe shape extending in a direction in which light is guided.

IPC Classes  ?

• G02B 6/13 - Integrated optical circuits characterised by the manufacturing method

Abstract

A lipid bimolecular membrane substrate 1A includes: a substrate 12 in which a microwell 20 opened on one surface is formed; a lipid bimolecular membrane 30 disposed on the substrate 12 so as to cover an opening of the microwell 20; and a sealing liquid 22 disposed between the substrate 12 and the lipid bimolecular membrane 30. The sealing liquid 22 contains an ionic liquid.

IPC Classes  ?

• G01N 33/487 - Physical analysis of biological material of liquid biological material

Abstract

An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.

IPC Classes  ?

• H04B 10/516 - Transmitters - Details of coding or modulation
• H04B 10/077 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
• H04J 14/06 - Polarisation multiplex systems

Abstract

A mixed acoustic signal including sound emitted from a plurality of sound sources and sound source video signals representing at least one video of the plurality of sound sources are received as inputs, and at least a separated signal including a signal representing a target sound emitted from one sound source represented by the video is acquired. However, at least the separated signal is acquired using properties of the sound source that affects sound emitted by the sound source acquired from the video and/or features of a structure used for the sound source to emit the sound.

IPC Classes  ?

• G10L 21/028 - Voice signal separating using properties of sound source
• G10L 15/06 - Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice
• G10L 15/25 - Speech recognition using non-acoustical features using position of the lips, movement of the lips or face analysis

Abstract

A state estimation device includes an information acquisition unit acquiring at least one of (i) electrode acquisition information indicating an electromagnetic time series that is a time series of an electromagnetic quantity that is an electromagnetic force, field, or energy applied to an electrode from which a signal indicating a state of a heart of an estimation target is acquirable or (ii) environment information that is information on a time series of an environmental quantity that is an amount related to one or both of a state of motion of the estimation target and an environment in which the estimation target is present; and an estimation unit using at least one of the electrode acquisition information or the environment information to determine whether an electrode event, which is an abnormality in acquisition of a signal indicating the state of the heart of the estimation target by the electrode, has occurred.

IPC Classes  ?

• A61B 5/361 - Detecting fibrillation

Abstract

A word selection support device according to the present disclosure includes processing circuitry configured to derive, for each extracted unknown word that is a term that is extracted from a target corpus and is not registered in dictionary data, statistical information regarding the extracted unknown word in a plurality of corpuses including the target corpus, and calculate appropriateness as a registered unknown word possibility that is a possibility of an unknown word to be registered in the dictionary data for each of the extracted unknown word on the basis of the statistical information.

IPC Classes  ?

• G06F 40/295 - Named entity recognition
• G06F 40/157 - Transformation using dictionaries or tables

Abstract

A support device according to the present disclosure includes a label inference unit that infers inference labels that are labels corresponding to elements included in training data in which elements and correct labels corresponding to the elements are associated with each other using a model that is learned using the training data and infers labels corresponding to the elements, and an evaluation unit that generates training data confirmation screens including elements included in the training data, correct labels of the elements, and inference labels of the elements.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

A learning device (10) according to the present disclosure includes a data set division unit (11) as a training data processing unit and a divided data set learning unit (12) as a model learning unit. The data set division unit (11) divides a new training data set into a plurality of divided data sets on the basis of attribute information. After performing model learning processing using an existing model as a learning target model, the divided data set learning unit (12) creates a new model by repeating the model learning processing until all the divided data sets are learned using a learned model created by the model learning processing as a new learning target model.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

An information processing device that designs a Bayesian network includes: an input unit configured to input, as elements of a Bayesian network, information regarding a plurality of nodes, an edge indicating a causal relation between a master node and a slave node in the plurality of nodes, and a weight indicating the degree of influence of a definition content of the master node on a probability distribution of the slave node; and a generation unit configured to generate a Bayesian network using the input information.

IPC Classes  ?

• G06N 7/01 - Probabilistic graphical models, e.g. probabilistic networks

Abstract

A distributed circuit includes: a first transmission line that has an input end to which an input signal is input; a second transmission line that has an output end from which an output signal is output; a plurality of unit cells that are disposed along the first and second transmission lines, the input terminals of the unit cells being connected to the first transmission line, the output terminals of the unit cells being connected to the second transmission line; two input termination resistors connected in parallel to an end of the first transmission line; and two output termination resistors connected in parallel to an end of the second transmission line. In the distributed circuit, at least one input termination resistor is a temperature-gradient resistor, and voltages at the two input termination resistors are changed symmetrically.

IPC Classes  ?

• H03F 3/60 - Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators

Abstract

An object of the present disclosure is to provide a simple, compact optical switch with low power consumption. The present disclosure is an optical switch that includes: a first multi-core optical fiber having a plurality of cores on the same circumference from a central axis in a cross section perpendicular to a long axis direction; a first ferrule incorporating the first multi-core optical fiber; a second multi-core optical fiber in which cores are arranged at respective positions corresponding to the plurality of cores of the first multi-core optical fiber in a cross section perpendicular to the long axis direction; a second ferrule incorporating the second multi-core optical fiber and having an outer diameter equal to that of the first ferrule; a split sleeve for accommodating the first ferrule and the second ferrule in such a manner that the first ferrule and the second ferrule are opposed to each other on a central axis; a slit space adjustment jig for adjusting a space of a slit of the split sleeve; and a rotation mechanism for rotating one of the first ferrule and the second ferrule around the central axis.

IPC Classes  ?

• G02B 6/35 - Optical coupling means having switching means
• G02B 6/02 - Optical fibres with cladding
• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means

Abstract

This impact analysis device involves: acquiring, on the basis of a source code of a new version library and a source code of an old version of the library, a list of method information relating to a difference between the new version library and the old version library; extracting, from the list, a first difference relating to a method present in a first call graph of software which uses the old version library; extracting, from the list, a second difference relating to a method added to a second call graph, of the software, which uses the new version library; extracting a set of method information items on a call side of transition that have been added to the second call graph as compared to the first call graph; and outputting the union of the first difference, the second difference, and the set, thereby improving assistance in determining a possibility of impact of library update on the operation of the software.

IPC Classes  ?

• G06F 8/70 - Software maintenance or management

Abstract

A trajectory data prediction device according to one embodiment of the present disclosure has: a parameter learning unit that is configured to learn learnable parameters including parameters of Gaussian processes to which a vector field conforms, the vector field expressing a physical system in which conservation of energy or dissipation of energy is established, so as to maximize a probability distribution to which trajectory data conforms, the trajectory data representing the trajectory of a physical quantity observed in the physical system, and the learning being carried out on the basis of the similarity of the Gaussian processes; and a predicted trajectory data calculation unit that is configured to predict trajectory data satisfying the prediction condition by using the vector field, the prediction being made on the basis of the learnable parameters that have been learned and associated prediction conditions.

IPC Classes  ?

• G06N 20/00 - Machine learning

Abstract

One aspect of this invention acquires, when information representing a virtual reality space including an avatar corresponding to a user is displayed on a head-mounted display worn by the user, psychosomatic information representing a psychosomatic state of the user and generates effect information for causing the user to sense or falsely perceive a psychosomatic state on the basis of the acquired psychosomatic information. Additionally, the effect information is reflected to the avatar included in the information representing the virtual reality space and the information representing the virtual reality space including the avatar reflecting the effect information is output to the head-mounted display.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance

Abstract

Provided is a link system (1) which has a master (10) and a worker (20) that corresponds to a simulator (30), wherein, in the master (10), a storage unit (12) has a message queue (12a) that is an area that stores data for each category of a name space. In the worker (20), the storage unit (22) stores a name classification table (22a) in which the category of a name space is associated with simulator-identifying information. A generation unit (21b) uses an execution result acquired by the simulator (30) and the category of a name space corresponding to the simulator (30), identified with reference to the name classification table (22a), of a destination to generate data to be transmitted to the master (10). A transmission unit (21c) transmits the generated data to the message queue (12a) corresponding to the category of a name space of the master (10).

IPC Classes  ?

• G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation
• G06F 9/54 - Interprogram communication

Abstract

Provided is an estimation device comprising a control unit that: reads information from a storage unit in which are stored a set of parameters and symbols used in communication, and information indicating the performance required in order to realize a prescribed communication quality in communication in which the parameters and symbols are used, the set and the information being associated with one another; and estimates a SNR required in multilevel coding (MLC) in which the parameters and symbols indicated by inputted information are used.

IPC Classes  ?

• H03M 13/01 - Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes

Abstract

The purpose of the present invention is to provide a bundled optical fiber capable of transmitting light even if power deviation occurs at a bundled portion and outputting desired power from where the bundle is split into a plurality of radiation units.　A bundled optical fiber 36 according to the present invention bundles a plurality of single-core optical fibers 51a, and is characterized in that the coupling ratios for coupling light from the outside to the single-core optical fibers 51a at one end thereof differ between at least a part of the single-core optical fibers 51a and the other single-core optical fibers 51a. In the bundled optical fiber 36, the coupling ratios are varied by changing the number of apertures or diameter of the cores 52 of the single-core optical fibers 51a.

IPC Classes  ?

• G02B 6/04 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
• G02B 6/40 - Mechanical coupling means having fibre bundle mating means

Abstract

Provided are a semiconductor optical waveguide in which the width of the waveguide can be reduced and low resistance can be obtained even while crystal defects in a core layer thereof are suppressed, and a method for manufacturing the semiconductor optical waveguide. This semiconductor optical waveguide comprises a substrate, a core layer formed on the substrate, an overcladding layer formed on the core layer, a contact layer provided on the overcladding layer, a cavity formed in the overcladding layer, a groove that is formed in the overcladding layer and the contact layer and is connected to the cavity, a first electrode connected to the substrate, and a second electrode connected to the contact layer.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/136 - Integrated optical circuits characterised by the manufacturing method by etching
• G02F 1/015 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements with at least one potential jump barrier, e.g. PN, PIN junction

Abstract

This analog RoF system comprises a master station device and a slave station device that performs transmission and reception of a radio signal via an antenna. The master station device generates control information that is used for controlling transmission and reception operations for the radio signal, and transmits an optical signal, which includes a first digital signal including the generated control information and an analog main signal, to the slave station device via an optical fiber. The slave station device acquires the control information from the first digital signal included in the optical signal received from the master station device via the optical fiber, and performs a process of switching between the transmission operation and the reception operation for the radio signal via the antenna, on the basis of the acquired control information.

IPC Classes  ?

• H04L 5/16 - Half-duplex systems; Simplex/duplex switching; Transmission of break signals
• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• H04J 3/00 - Time-division multiplex systems
• H04J 3/26 - Time-division multiplex systems in which the allocation is indicated by an address in which the information and the address are simultaneously transmitted

Abstract

An orchestrator locates a server in anyone of a plurality of edge clouds on the basis of a plurality of delay differences, respectively corresponding to the plurality of the edge clouds having each delay difference and assumed if the server located in each of the edge clouds, that are each a difference between delay from the server to a first client and delay from the server to a second client, and gives a delay to at least one of the first client and the second client so that the delay from the located server to the first client and the delay from the located server to the second client become the same.

IPC Classes  ?

• H04L 67/101 - Server selection for load balancing based on network conditions

Abstract

To detect deterioration of an SOA and perform feedback control to keep light intensity of output light constant in a configuration in which a DFB laser, an EA modulator, and the SOA are monolithically integrated. A semiconductor optical integrated element includes: a DFB laser that outputs continuous light; an EA modulator that modulates the continuous light; a first multimode interference coupler that inputs the modulated light from a first input port, divides the modulated light, and outputs the divided modulated light from two or more output ports; semiconductor optical amplifiers that are connected to respective output ports of the first multimode interference coupler and amplify each of the divided modulated light; a second multimode interference coupler that has input ports connected to respective outputs of the semiconductor optical amplifiers, multiplexes the amplified modulated light, and outputs the multiplexed modulated light from a first output port; and a monitoring waveguide.

IPC Classes  ?

• H01S 5/0683 - Stabilisation of laser output parameters by monitoring the optical output parameters
• H01S 5/026 - Monolithically integrated components, e.g. waveguides, monitoring photo-detectors or drivers
• H01S 5/068 - Stabilisation of laser output parameters
• H01S 5/125 - Distributed Bragg reflector [DBR] lasers

Abstract

A classification device (10) acquires an operation log related to operation information, identifies each operation performed by a user using the operation log, and creates a vector of each operation on the basis of a co-occurrence relationship between the identified operations. Then, the classification device (10) calculates a similarity between a predetermined number of operations adjacent to each other in chronological order using the created vector of each operation, determines a division point of the operations using the calculated similarity, and divides a time-series operation into operation sets on the basis of the division point. Then, the classification device (10) classifies the operation sets into classes on the basis of the number of types of operations common to the operation sets.

IPC Classes  ?

• G06F 11/34 - Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation
• G06F 18/2431 - Multiple classes

Abstract

A key exchange system according to an embodiment includes: a plurality of terminals that perform key exchange; and a server that performs authentication of each of the terminals and mediation of the key exchange, in which the server includes a nonce generation unit that generates a nonce used when the authentication is performed between the server and the terminal by federation using OpenID Connect, a key generation unit that generates a public key and a secret key of token control encryption, a first transmission unit that transmits the nonce and the public key to the terminal, and a decryption unit that decrypts a ciphertext received from the terminal by using the secret key and a token received from the terminal, and the terminal includes an encryption unit that generates a ciphertext obtained by encrypting predetermined data by using the public key and a token generated from the nonce, a second transmission unit that transmits the ciphertext to the server, and a long-term secret string generation unit that generates a long-term secret string for use in the key exchange, by using the nonce.

IPC Classes  ?

• H04L 9/08 - Key distribution
• H04L 9/06 - Arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
• H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system

Abstract

A display control device (10) includes: a first acquisition unit (151a) configured to acquire information regarding an existing UI; an extraction unit (151b) configured to extract a rule set indicating relevance between the existing UI and an extended UI from a predetermined database based on the information regarding the existing UI acquired by the first acquisition unit (151a); a first generation unit (151c) configured to generate rule information of the extended UI based on the rule set extracted by the extraction unit (151b); and a setting unit (152) configured to set display of the extended UI based on the rule information of the extended UI generated by the first generation unit (151c).

IPC Classes  ?

• G06F 9/451 - Execution arrangements for user interfaces
• G06F 3/04847 - Interaction techniques to control parameter settings, e.g. interaction with sliders or dials

Abstract

A gas phase reduction device for carbon dioxide is a gas phase reduction device for carbon dioxide that exerts a catalytic function by light irradiation to generate oxidation-reduction reaction. The gas phase reduction device includes an oxidation tank in which an aqueous solution is put, a reduction tank to which carbon dioxide is supplied, a semiconductor photoelectrode installed in the aqueous solution, and a porous electrode-supported electrolyte membrane that is a joint body of an electrolyte membrane and a porous reduction electrode, the porous electrode-supported electrolyte membrane being installed between the oxidation tank and the reduction tank with the electrolyte membrane facing the oxidation tank and the porous reduction electrode facing the reduction tank. Voltage between a reference electrode installed in the aqueous solution and a reference electrode installed in contact with the electrolyte membrane is measured by a voltmeter, and a control unit increases voltage between the semiconductor photoelectrode and the porous reduction electrode in accordance with change in voltage between the reference electrodes from an initial value at start of reaction. The control unit includes a solar cell and a constant voltage power supply, and the solar cell is arranged on an extension line of a straight line from a light source toward the semiconductor photoelectrode, and generates power utilizing light emitted to and transmitted through the semiconductor photoelectrode.

IPC Classes  ?

• C25B 15/023 - Measuring, analysing or testing during electrolytic production
• C25B 3/03 - Acyclic or carbocyclic hydrocarbons
• C25B 3/07 - Oxygen containing compounds
• C25B 3/21 - Photoelectrolysis
• C25B 3/26 - Reduction of carbon dioxide
• C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
• C25B 9/50 - Cells or assemblies of cells comprising photoelectrodes; Assemblies of constructional parts thereof
• C25B 11/049 - Photocatalysts

Abstract

An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water. An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water. In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a relay capable of forming a path for communication while avoiding an obstacle is selected from a plurality of relays. In this communication method, signals are transmitted and received by using optical wireless communication using a relay on the path.

IPC Classes  ?

• H04B 10/29 - Repeaters
• G01S 5/18 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
• H04B 10/40 - Transceivers

Abstract

A capacitor includes a pair of facing stacked electrodes connected to an electrical wiring from the outside. The stacked electrode includes a plurality of wiring layers and a via layer between the wiring layers. The stacked electrode includes combs and a comb connection portion connected to base ends of the combs. A dielectric is provided between one stacked electrode and the other stacked electrode. The comb of the other stacked electrode is disposed between the combs of the one stacked electrode.

IPC Classes  ?

• H05K 1/18 - Printed circuits structurally associated with non-printed electric components

Abstract

A wireless communication system comprising a plurality of base station devices including a first base station device and a second base station device, wherein the first base station device connected with a terminal determines whether to continue connection with the terminal or not on a basis of a communication quality requirement of the terminal and a resource that can be provided to the terminal, and the first base station device transmits a control signal instructing connection with the second base station device to the terminal in a case where the first base station device determines not to continue the connection with the terminal.

IPC Classes  ?

• H04W 36/14 - Reselecting a network or an air interface
• H04W 36/30 - Reselection being triggered by specific parameters by measured or perceived connection quality data

Abstract

A sensor system includes a sensor terminal and a sensor accommodating terminal The sensor accommodating terminal includes a time stamp adding unit that acquires a time stamp of a reception time of a packet received from the sensor terminal, a memory that stores the time stamp and a time stamp interval, and a disconnection determination unit. The disconnection determination unit calculates a first variance of a plurality of time stamp intervals, calculates a second variance of the plurality of time stamp intervals newly obtained after calculation of the first variance, calculates a ratio of the second variance to the first variance as an evaluation value, and determines whether a reception interval of the packet is normal or abnormal by equal variance determination of the evaluation value.

IPC Classes  ?

• H04J 3/06 - Synchronising arrangements
• H04W 4/38 - Services specially adapted for particular environments, situations or purposes for collecting sensor information
• H04W 56/00 - Synchronisation arrangements

Abstract

An estimation device collects sensor data representing a change in a load along a time series as a change in a voltage value from a sensor that generates a voltage when a load applied to an area changes, and estimates a matter related to a measurement target passing through a predetermined area by using sensor data collected from the sensor installed in the predetermined area.

IPC Classes  ?

• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G06N 20/00 - Machine learning

Abstract

Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including a speaker system that includes at least one speaker unit pair including a positive speaker unit that emits a sound based on an acoustic signal of a predetermined sound source and a negative speaker unit that emits a sound based on an acoustic signal having an opposite phase to the acoustic signal, in which the speaker unit pair is configured such that a surface of the positive speaker unit and a surface of the negative speaker unit located foremost when viewed from a front direction are one plane perpendicular to a ground plane, and an arrangement of the positive speaker unit and the negative speaker unit when viewed from the front direction is parallel to a direction perpendicular to the ground plane, and is configured such that sounds emitted from the positive speaker unit and the negative speaker unit in a rear direction go around in the front direction.

IPC Classes  ?

• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 5/02 - Spatial or constructional arrangements of loudspeakers

Abstract

A camera parameter estimating device includes an obtaining unit which obtains time series frames including a plurality of subject images existing in a common field of vision shared by multiple cameras for each of the cameras, a point estimating unit which estimates the coordinates of a joint point determined in the subject image in the time-series frame for each of the subject images, a motion trajectory estimating unit which estimates the trajectory of the joint point between the time-series frames for each of the cameras, an inter-camera correspondence estimating unit which estimates a group of the trajectories between the frames obtained respectively from a pair of the cameras, and a parameter estimating unit which estimates a camera parameter for each of the cameras according to the group of trajectories.

IPC Classes  ?

• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06T 7/215 - Motion-based segmentation
• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G06T 7/292 - Multi-camera tracking

Abstract

A conversion device analyzes information of an input packet using hardware and determines whether to perform predetermined previous stage processing using the hardware. Furthermore, when it is determined to perform the previous stage processing, the conversion device uses the hardware to provide metadata including identification information indicating a group of packets to the packets on the basis of the fixed-length header information of the packets. In addition, the conversion device uses software to generate analysis packets corresponding to the group of packets using the provided metadata.

IPC Classes  ?

• H04L 43/50 - Testing arrangements
• H04L 69/22 - Parsing or analysis of headers

Abstract

Provided is an interference control system for wireless communication suitable for limiting the total amount of interference given to an interfered device to be protected by a large number of interfering devices. An interference control system includes a subscriber database that stores information regarding a position of each interfering device. A registration application (5) including an ID of an interfering device disposed in a carrier network is received from the interfering device. The registration application is received and position information that matches information stored in the subscriber database regarding the ID is set (2), (3), and (6). The position information is transmitted to the control device for registration (6).

IPC Classes  ?

• H04W 16/14 - Spectrum sharing arrangements
• H04W 60/00 - Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Abstract

A graphic display control device comprising: a data acquisition unit that acquires an utterance content of a speaker as text data; a search information extraction unit that extracts search information to be used for searching, from the text data acquired by the data acquisition unit; a graphic selection unit that selects, from a database, a graphic corresponding to the search information extracted by the search information extraction unit; and an output function unit that performs processing for presenting the graphic selected by the graphic selection unit, on a graphic recording result.

IPC Classes  ?

• G06T 11/60 - Editing figures and text; Combining figures or text
• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer

Abstract

The present invention estimates intention of an utterance more accurately than the related arts. A learning device learns an estimation model on the basis of learning data including an acoustic signal for learning and a label indicating whether or not the acoustic signal has been uttered to a predetermined target. The learning device includes: a feature synchronization unit configured to obtain a post-synchronization feature by synchronizing an acoustic feature obtained from the acoustic signal for learning with a text feature corresponding to the acoustic signal; an utterance intention estimation unit configured to estimate whether or not the acoustic signal has been uttered to the predetermined target by using the post-synchronization feature; and a parameter update unit configured to update a parameter of the estimation model on the basis of the label included in the learning data and an estimation result by the utterance intention estimation unit.

IPC Classes  ?

• G10L 15/06 - Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice
• G10L 15/16 - Speech classification or search using artificial neural networks

Abstract

In this invention, a virtual machine analysis unit (121) analyzes the VM of a script engine and acquires architecture-related information relating to the script engine. An instruction set architecture analysis unit (122) acquires information on an instruction set architecture, which is a system of instructions of the virtual machine, on the basis of the architecture-related information. An instrumentation bytecode extraction unit (1231) extracts instrumentation bytecodes on the basis of the acquired architecture-related information and the information on the instruction set architecture. An insertion unit (1232) inserts the extracted instrumentation bytecodes into bytecodes subject to analysis.

IPC Classes  ?

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

Abstract

This risk calculation device constructs a plurality of first shadow models using a predetermined dataset. Then, the risk calculation device selects, from a set of sample data, pieces of sample data for which the average loss of the plurality of first shadow models is sufficiently large and the variance thereof is small. Subsequently, the risk calculation device constructs a plurality of second shadow models using the selected pieces of sample data and the dataset. Next, the risk calculation device calculates, for the pieces of sample data, a distance between the distribution of losses of the plurality of first shadow models and the distribution of losses of the plurality of second shadow models. Then, the risk calculation device selects sample data for which the distance is equal to or larger than a predetermined threshold value as sample data (target sample) to be used for calculating a privacy risk of a machine learning model.

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06N 20/00 - Machine learning

Abstract

A vulnerability detection device (10) comprises: a virtual machine analysis unit (121) that analyzes a VM of a script engine; an instruction set architecture analysis unit (122) that analyzes an instruction set architecture, which is a VM instruction system, that collects VM instructions, and that determines the instruction content of the collected VM instructions; a calculation unit (123) that, on the basis of the architecture information acquired by the virtual machine analysis unit (121) and the instruction set architecture analysis unit (122), constructs a first control flow graph indicating an overall path; and a vulnerability detection unit (124) that alters an input value, that constructs a second control flow graph indicating a path which is executed as a test and in which the altered input value input to an analysis target script, that calculates code coverage, and that, on the basis of the code coverage calculation result, selects a value to input and performs fuzzing of the analysis target script executed on the VM.

IPC Classes  ?

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

Abstract

An analysis function addition device (10) comprises a virtual machine analysis unit (121) that analyzes the VM of a script engine, an instruction set architecture analysis unit (122) that analyzes an instruction set architecture, which is a system of instructions of the VM, to collect VM instructions and determine the content of the collected VM instructions, and a calculation unit (123) that uses the architecture information acquired by the virtual machine analysis unit (121) and the instruction set architecture analysis unit (122) to construct a first control flow graph representing an entire path executed exhaustively through multipath execution, and a second control flow graph representing paths executed during execution of a test subject, and uses the first control flow graph and the second control flow graph to calculate a code coverage of a script executed on the script engine.

IPC Classes  ?

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

Abstract

A optical monitor device (10) comprises: a bend-applying unit (11) that forms a bent portion (6) in each of a plurality of optical fibers (5); and a leak light measurement device (12) that separates leak light (8), which is of propagating light (7) and is from the bent portion (6), according to the wavelength and then receives the leak light (8), the propagating light (7) having a plurality of wavelengths and propagating in each of the optical fibers (5).

IPC Classes  ?

• G01M 11/00 - Testing of optical apparatus; Testing structures by optical methods not otherwise provided for

Abstract

The present disclosure relates to technology for correcting a regular expression that is vulnerable to ReDoS attacks. The purpose of the present disclosure is to ensure that a correction result having, as a subject, a regular expression including real-world extensions is not vulnerable while minimizing memory consumption.　For the aforementioned purpose, a correction device 30 carries out an iterative deepening depth-first search to thereby correct an inputted regular expression to a form that satisfies RWS1U (prohibits the same characters from appearing consecutively) by using the regular expression, a positive example, and a negative example, and then output the corrected regular expression. It is expected that this will make it possible to support development of a program that is safe against ReDoS in more scenarios.

IPC Classes  ?

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

Abstract

An extraction unit (21) extracts, from a plurality of pieces of flow information indicating transitions of actions or states of respective users, a common page transition pattern for each of a completed flow which has reached an action or state indicating completion and a quit flow which has been quit without reaching the action or state indicating completion. A conversion unit (22) creates, from patterns of respective users, a matrix including occurrence or nonoccurrence for each of the patterns and converts, by dimensional compression, the matrix into a latent variable for each user. A creation unit (25) creates, on the basis of the latent variable for each user, a decision tree for classification between the completed flow and the quit flow. A visualization unit (29) visualizes information pertaining to classification between the completed flow and the quit flow on the basis of the decision tree.

IPC Classes  ?

• H04L 67/00 - Network arrangements or protocols for supporting network services or applications

Abstract

An extraction unit (22) extracts patterns that are collections of frequent actions or conditions, from a plurality of items of traffic flow information indicating transitions between actions or conditions for each user. An unnecessary pattern exclusion unit (23) excludes, from among the extracted patterns, a pattern or patterns in which the final action or condition of the pattern is not suitable for the purpose of an analysis. For each of the extracted patterns, a determination unit (24) determines that a pattern for which the frequency of appearance in a traffic flow DB (20) is greater than or equal to a threshold value is a pattern to be analyzed.

IPC Classes  ?

• H04L 67/1396 - Protocols specially adapted for monitoring users’ activity
• G06F 16/20 - Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
• H04L 67/02 - Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]

Abstract

This planning device comprises: a solution calculation unit that calculates, as a first solution, a solution to an integer programming problem in which an additional constraint is not used, and calculates, as a second solution, a solution to the integer programming problem in which a portion of past solutions is used as an additional constraint; and a parameter generation unit that calculates an evaluative criterion on the basis of the first solution and the second solution, and generates a parameter of an objective function of the integer programming problem on the basis of the evaluative criterion.

IPC Classes  ?

• G06Q 50/26 - Government or public services

Abstract

The present invention realizes: having a single thin-film heater mounted on an optical switch element; and a protection function. This waveguide-type optical switch circuit comprises a plurality of Mach–Zehnder interferometer-type two-input two-output optical switch elements, and forms an N-input one-output optical switch or a one-input N-output optical switch. Each of the optical switch elements includes a heater in one of two arm waveguides. For switching in which a reduction in time is required when paths are changed, an optical switch element for applying a voltage of zero to the heater during the change is not included in the path after the change.

IPC Classes  ?

• G02F 1/313 - Digital deflection devices in an optical waveguide structure

Abstract

An offload server (1) comprises: a request processing load analysis unit (120) that analyzes a request processing load for data actually being used by a user; a representative data selection unit (121) that identifies an application for which the analyzed processing load is highest, and selects representative data from among request data during use of said application; a degree of improvement calculation unit (122) that, on the basis of the selected representative data, determines a new offload pattern by executing an application code analysis unit (112), a PLD processing designation unit (113), an arithmetic strength calculation unit (114), a PLD processing pattern creation unit (115), a performance measurement unit (116), and an execution file creation unit (117), and calculates a performance improvement effect by comparing the processing time and usage frequency of the determined new offload pattern with the processing time and usage frequency of the current offload pattern; and a reconfiguration proposal unit (123) that proposes PLD reconfiguration when the performance improvement effect is a prescribed threshold or higher.

IPC Classes  ?

• G06F 9/38 - Concurrent instruction execution, e.g. pipeline, look ahead
• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]

Abstract

In order to perform PtMP transmission using OAM multiplexing transmission on a backbone line and using power multiplexing transmission on a terminal line, this transmission device comprises: a processing unit that selects two or more terminals to be subjected to power multiplexing; and a transmission unit that transmits an OAM multiplexing signal through the backbone line and that transmits a power multiplexing signal through the terminal line.

IPC Classes  ?

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

Abstract

A management server (30) stores map information about each of areas in which robots travel, the robots autonomously traveling indoors and outdoors. The management server (30): collects external information; receives the current positions or travel routes of the robots from a control device that controls the robots; detects, on the basis of the external information, the occurrence of an event and an event occurring area in which the event occurs; identifies, on the basis of the current positions or travel routes of the robots, robots present in the event occurring area or robots that have been predicted to be in the event occurring area; determines, on the basis of the external information and map information, information pertaining to a new travel route for each of the robots in the event occurring area or each of the robots that have been predicted to be in the event occurring area; and recommends, to a terminal device, the information pertaining to the new travel route.

IPC Classes  ?

• G05D 1/43 - Control of position or course in two dimensions
• G01C 21/34 - Route searching; Route guidance
• G08G 1/09 - Arrangements for giving variable traffic instructions
• G08G 1/13 - Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles to a central station the indicator being in the form of a map

Abstract

A stream information setting unit (108) sets, with respect to a plurality of information collection object apparatuses, either a first transmission setting of a first data transmission of which a transmission cycle is designated or a second transmission setting of a second data transmission which uses a predetermined transmission cycle. A telemetry data receiving unit (106) receives data from the information collection object apparatuses by the first data transmission executed according to the first transmission setting and the second data transmission executed according to the second transmission setting performed by the stream information setting unit (108). A measuring unit (103) measures a transmission time of data by the first data transmission. A comparing unit (104) determines whether or not the transmission time measured by the measuring unit (103) exceeds the designated transmission cycle. A cycle changing unit (105) extends a transmission cycle of the second data transmission when the comparing unit (104) determines that the transmission time exceeds the transmission cycle.

IPC Classes  ?

• H04L 43/16 - Threshold monitoring
• H04L 43/0852 - Delays

Abstract

An optical device includes a photonic crystal main unit, an optical waveguide, an active region, an active substance, and a light source. The active region is formed in the optical waveguide and accommodates the liquid active substance formed with a four-level light-emitting material. For example, an accommodating unit formed in the active region is provided, and the active substance is accommodated in the accommodating unit. The active substance can be formed with an aqueous solution of a dye such as rhodamine, for example.

IPC Classes  ?

• H01S 5/11 - Comprising a photonic bandgap structure
• H01S 5/024 - Arrangements for thermal management
• H01S 5/10 - Construction or shape of the optical resonator

Abstract

Provided is a server delay control device for a server in which an OS having a kernel is deployed. The OS includes: a ring buffer managed by the kernel; and a poll list in which information on a net device of a hardware interrupt from an NIC is registered. The server delay control device is deployed in the server and configured to receive a timer interrupt at predetermined specified intervals and monitors a packet arrival and includes: a packet arrival monitoring part configured to check the presence or absence of a packet in the poll list upon being triggered by the timer interrupt to monitor the poll list; and a packet dequeuer configured to, when a packet has arrived, reference the packet held in the ring buffer, and perform dequeuing to remove the corresponding queue entry from the ring buffer.

IPC Classes  ?

• H04L 47/56 - Queue scheduling implementing delay-aware scheduling

Abstract

A delay measurement device includes a NW measurement unit that measures a topology, a delay amount of each link, jitter, and a packet loss rate, and causes a NW state holding unit to hold them as NW state information, a link quality calculation unit that calculates the link quality between the end points as a weight on the basis of the NW state information including the topology, the delay amount of each link, the jitter, and the packet loss rate, and a path calculation function unit that calculates a measurement path on the basis of a weighted topology in which the weight of the link quality calculated by the link quality calculation unit is reflected in the topology. The NW measurement unit transmits a measurement packet to a start point and measures the delay amount of a measurement target section of a NW.

IPC Classes  ?

• H04L 43/087 - Jitter

Abstract

When a CRAM error detection unit (12c) detects a one-bit soft error of a CRAM (12b), a failure management unit (16) performs control for coping with a failure in a downstream side communication device (14) with an error notification (ER1) as a trigger. A failure detection sensitivity of a failure detection unit (15) is temporarily increased compared to a steady state. Or an upstream side communication device (11) retransmits an original communication signal (SG1). Or a known test signal is transmitted from the upstream side communication device (11) before retransmission, and the failure is diagnosed on the downstream side, and then the test signal is retransmitted. Alternatively, a signal is processed by two communication paths to select a signal without an error, and an erroneous signal is discarded. When a failure is detected, a device is restarted. It is possible to find a failure in an early stage to prevent a silent failure or to shorten a time until recovery of service or to suppress an occurrence of a failure by taking measures with the detection of a CRAM error as a trigger.

IPC Classes  ?

• G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance

Abstract

A conversion device (10) analyzes an input packet and acquires header information included in the packet. Furthermore, the conversion device (10) classifies packets into one of a plurality of groups on the basis of the acquired header information and set grouping conditions. Subsequently, the conversion device (10) generates packets for analysis on the basis of the processing corresponding to the classified groups.

IPC Classes  ?

• H04L 43/18 - Protocol analysers
• H04L 41/0893 - Assignment of logical groups to network elements
• H04L 43/026 - Capturing of monitoring data using flow identification
• H04L 69/22 - Parsing or analysis of headers

Abstract

An estimation apparatus 10 is a signal processing apparatus for processing an acoustic signal and estimates an observation signal of a virtual microphone arranged virtually from an input observation signal of a real microphone using a deep learning model having a neural network (NN) 11.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only

Abstract

An information acquisition apparatus (100) includes an acquisition unit (121), a classification unit (122), a determination unit (123), and a registration unit (124). The acquisition unit (121) acquires tree information representing information of a system screen by a plurality of nodes having a tree structure. The classification unit (122) classifies the plurality of nodes having a tree structure into an operable component and a label component based on the tree information. The determination unit (123) determines whether the label component indicates a name of the operable component based on a distance between the operable component and the label component. The registration unit (124) registers a correspondence between a text corresponding to the label component and specifying information for specifying the operable component in a case where the determination unit (123) determines that the label component indicates a name of the operable component.

IPC Classes  ?

• G06F 40/14 - Tree-structured documents
• G06F 40/274 - Converting codes to words; Guess-ahead of partial word inputs

Abstract

An analysis device includes processing circuitry configured to acquire, from each network traffic sensor that monitors communication of an Internet of Things (IoT) device, a normal communication model that is used for monitoring the communication and indicates a characteristic of normal communication of the IoT device, cluster a normal communication model group of a same feature among acquired normal communication model groups, calculate a majority cluster that is a cluster having a largest number of normal communication models by using a result of the clustering, and calculate an average model of the normal communication model group belonging to the majority cluster, and notify the network traffic sensor serving as an acquisition source of the normal communication model of attribution information indicating whether or not the normal communication model belongs to the majority cluster and the average model.

IPC Classes  ?

• H04L 41/16 - Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using machine learning or artificial intelligence
• H04L 43/0876 - Network utilisation, e.g. volume of load or congestion level

Abstract

A setting changing apparatus includes a memory and a processor configured to determine whether software of a plurality of network devices, which are related to a redundant configuration, is being updated when an instruction of setting change for the plurality of network devices is input; and wait, when the software of any of the network devices is being updated, until the update of the software of the network device is completed and execute the setting change for the network device.

IPC Classes  ?

• H04L 41/0803 - Configuration setting
• G06F 8/65 - Updates

Abstract

An information processing device in a communication apparatus performs a management process of traffic flow management information for transfer of data including a plurality of frames from a transmission source terminal to a transmission destination terminal. Where new traffic flow management information of a traffic flow associated with a data frame identified by an identification unit on the basis of identification information included in the received data frame is recorded in the communication apparatus, a recording unit determines whether the number of pieces of traffic flow management information already recorded is equal to or more than a threshold value, and calculates and records a scheduled release time of the traffic flow management information according to a determination result.

IPC Classes  ?

• H04L 47/56 - Queue scheduling implementing delay-aware scheduling
• H04L 47/28 - Flow control; Congestion control in relation to timing considerations

Abstract

There is provided an acoustic system for a user who uses a seat of an airplane, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including a speaker system including one speaker unit that emits a sound based on an acoustic signal of a predetermined sound source, in which a sound emitted from the speaker unit is hearable in a region to be audible near the speaker unit, and by a sound emitted from the speaker unit in a back surface direction coming around to a front surface direction, the sound emitted from the speaker unit in the front surface direction and the sound emitted from the speaker unit in the back surface direction cancel each other in a region in the front surface direction far from the speaker unit.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only

Abstract

Provided is a social value evaluation device, including: a feature value generation unit configured to generate a feature value from text information on social value evaluation; an input unit configured to input text information on an evaluation target; an evaluation unit configured to evaluate a relevance between the feature value and the text information input by the input unit; and an output unit configured to output an evaluation result from the evaluation unit.

IPC Classes  ?

• G06Q 50/00 - Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
• G06F 40/40 - Processing or translation of natural language

Abstract

An object of the present invention is to provide a multicore non-reflective terminal portion having a small influence of reflected light on an optical transmission system and having a small number of parts, and an optical path testing method using the same. An object of the present invention is to provide a multicore non-reflective terminal portion having a small influence of reflected light on an optical transmission system and having a small number of parts, and an optical path testing method using the same. A multicore non-reflective terminal portion 70 according to the present invention includes: 2n (n is a natural number) optical fibers 71 each having a vertically polished end face on one end side and an angle-polished end face on the other end side, a 2n-core MT connector 72 that collects the 2n optical fibers 71 and is attached to the one end side of the optical fibers 71, and n-core MT connectors (73a, 73b) attached to the other end side of the optical fibers 71 for each of two groups of the 2n optical fibers 71.

IPC Classes  ?

• G02B 6/43 - Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections

Abstract

A resource allocation device includes: a request receiving unit that receives a request to allocate a state management unit for sharing a state for each group composed of a plurality of user terminals within a group, to any of a plurality of DCs deployed in a distributed cloud environment; and an allocation calculation unit that calculates an allocation cost of allocating the state management unit to each DC by using an allocation index corresponding to a requirement requested by the group, and determines a DC to which the state management unit is allocated, in accordance with the allocation cost.

IPC Classes  ?

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

Abstract

An acoustic signal enhancement device includes: a spatiotemporal covariance matrix estimation unit 2 configured to estimate spatiotemporal covariance matrices Rf(j) and Pf(j); a reverberation suppression unit 3 configured to obtain a reverberation suppression filter Gf(j) of the sound source j using the estimated spatiotemporal covariance matrices Rf(j) and Pf(j) for each sound source j and to generate a reverberation suppression signal vector using the obtained reverberation suppression filter Gf(j) and the observation signal vector Xt,f; a sound source separation unit 4 configured to obtain an enhanced sound yt,f(j) of the sound source j and power of the sound source j using the generated reverberation suppression signal vector for each sound source j (where 1≤j≤J) corresponding to the target sound; and a control unit 5 configured to perform control such that processes of these units are repeatedly performed.

IPC Classes  ?

• G10L 21/0232 - Processing in the frequency domain

Abstract

According to one embodiment of the present invention, in a pre-learning phase: parameter information is acquired, the parameter information representing the degree of effectiveness in identifying a particular person included in a first video, and being set with respect to a first feature site in an image representing the particular person; first feature information is generated, reflecting the parameter information in a feature amount extracted from the first feature site; and the first feature information is stored together with identification information for the particular person. Meanwhile, in a person recognition phase: a person image is extracted from a second video and a second feature site is detected from the person image; using a feature amount extracted from the detected second feature site as second feature information, a degree of similarity between the second feature information and the stored first feature information is derived; on the basis of the results thereof, a determination is made as to whether the person image extracted from the second video corresponds to the image representing the particular person; and the result is output.

IPC Classes  ?

• G06T 7/00 - Image analysis

Abstract

This vulnerability discovery device (10) includes: a virtual machine analyzing unit (121) that analyzes the VM of a script engine; a command set architecture analyzing unit (122) that analyzes a command set architecture that is a system of VM commands, collects the VM commands, and determines the command content of the collected VM commands; and a vulnerability discovery unit (123) that uses a mutated code to perform fuzzing on the VM on the basis of architecture information acquired by the virtual machine analyzing unit (121) and the command set architecture analyzing unit (122).

IPC Classes  ?

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

Abstract

A virtual machine analysis unit (121) analyzes a VM of a script engine and acquires information relating to the architecture of the script engine. A symbol table detection unit (1218) detects a symbol table, which holds information relating to variables, on the basis of the acquired information relating to the architecture. A symbol table analysis unit (1219) analyzes the structure of the symbol table. An instruction set architecture analysis unit (122) acquires information pertaining to an instruction set architecture, which is the structure of virtual machine instructions, on the basis of the acquired information relating to the architecture. A VM instruction determination unit (1223) determines, using the symbol table and the information pertaining to the instruction set architecture, a virtual machine instruction that corresponds to a variable held by the symbol table.

IPC Classes  ?

• G06F 9/455 - Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
• G06F 11/36 - Preventing errors by testing or debugging of software

Abstract

This detection device (10) trains a machine learning model (typing characteristic model) so as to minimize the degree of abnormality of typing by a user himself/herself, by performing machine learning (for example, unsupervised machine learning) that uses free typing by the user himself/herself. Thereafter, the detection device (10) uses the trained machine learning model and calculates the degree of abnormality of the typing to be detected, and when the calculated degree of abnormality exceeds a predetermined threshold, the typing is determined as performed by a person other than the user himself/herself, and an abnormality is detected.

IPC Classes  ?

• G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints

Abstract

This evaluation device calculates a privacy risk of each piece of data included in a data set used for training a machine-learning model. In addition, the evaluation device calculates a gain that a user has obtained by providing the data to the data set. For example, the evaluation device calculates how much the accuracy of the machine-learning model is improved by using the data for training. In addition, the evaluation device calculates, as an inequality degree, the difference between the gain estimated from the privacy risk of the data and a user gain obtained by providing the data, and evaluates the inequality degree of the machine-learning model by using the calculated inequality of each of the users.

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06N 20/00 - Machine learning

Abstract

In a calculation device (10), an acquisition unit (15a) acquires a dataset and target samples including a plurality of samples. A learning unit (15b) uses the dataset and at least one sample of the target samples to cause a model (f) to learn. A determination unit (15c) uses output at the time when each sample of the target samples is input to the model (f) to determine whether or not the sample was used in the learning of the model (f). A calculation unit (15d) uses a success rate of the determination to calculate a privacy risk that represents a risk of data leakage in the model (f).

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06N 20/00 - Machine learning

Abstract

In Step S101, a steel material to be evaluated is charged with hydrogen until the hydrogen storage capacity thereof is saturated (Step S102) (first process). Next, in Step S103, the steel material with saturated hydrogen storage capacity, which is used as a working electrode, a reference electrode, and a counter electrode are immersed in an electrolyte solution containing an additive that promotes penetration of hydrogen into the steel material, and a change in electric current flowing between the steel material and the counter electrode is measured when the voltage between the steel material and the reference electrode is swept (second process). Next, in Step S104, a hydrogen evolution reaction on the surface of the steel material is evaluated on the basis of the measured change in the electric current (third process).

IPC Classes  ?

• G01N 27/26 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by using electrolysis or electrophoresis

Abstract

An optical modulator according to the present invention is a Mach-Zehnder interferometer wherein a light is branched and inputted to first and second Mach-Zehnder-type modulators and wherein lights outputted by the respective ones of the first and second Mach-Zehnder-type modulators are combined to generate a QAM signal. First and second drive-signal-applied electrodes change the optical path lengths of first and second arms of the first Mach-Zehnder-type modulator in accordance with first and second drive signals, respectively, which are multivalued electric signals. Third and fourth drive-signal-applied electrodes change the optical path lengths of first and second arms of the second Mach-Zehnder-type modulator in accordance with third and fourth drive signals, respectively, which are multivalued electric signals. First to fourth drive signal generating units generate and apply the first to fourth drive signals to the first to fourth drive-signal-applied electrodes, respectively. The first to fourth drive signals are mutually independent addition signals.

IPC Classes  ?

• H04B 10/556 - Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]

Abstract

A synchronization detection device 20 is constituted by: a pseudo-vorticity matrix calculation unit 21 that receives phase time-evolution information from an oscillator system 10 including a finite number of oscillators and calculates a matrix, the elements of which are numerical values obtained by discretizing a phase difference acquired by time evolution of two oscillators; a synchronization graph generation unit 22 that generates a synchronization graph which visualizes two-point synchronization by graph representation; a partial synchronized set detection unit 23 that detects a plurality of partial sets of oscillators which partially synchronize and have no common parts in the set of the finite number of oscillators in the synchronization graph; and a synchronization index calculation unit 24 that uses a calculation result of the calculation by the pseudo-vorticity matrix calculation unit 21 and the partial synchronized sets detected by the partial synchronized set detection unit 23, so as to generate an index which characterizes the partial synchronization in the oscillator system.

IPC Classes  ?

• G06F 17/10 - Complex mathematical operations

Abstract

The purpose of the present disclosure is to make it possible to detect, even against unknown threats, whether or not unexpected communication functions such as backdoors are set in developed software.　For this purpose, the present disclosure provides a certification device 3 for certifying the safety of software, said certification device 3 comprising: an input unit 31 to which software is input; a labeling unit 33 that determines whether each variable appearing in the software is confidential information or public information, and labels variables relating to confidential information; a verification logical formula generation processing unit 35 that uses the labels formed by the labeling unit to generate a verification logical formula, indicating that "the software satisfies safety requirements if the verification logical formula can be derived using a prescribed inference rule"; a proof generation unit 37 that generates a proof of the safety of the software if the verification logical formula can be derived using the prescribed inference rule; and a transmission unit 39 that transmits the software, the verification logical formula, and the proof to a verification device that verifies the proof.

IPC Classes  ?

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

Abstract

This statistical value estimation device estimates a statistical value of data in a protected form in the sense of local difference privacy, and comprises: an input unit that receives, from each of a plurality of data processing devices, processed data items which are values selected from a limited number of values, for each of two or more data items; and a calculation unit that uses the processed data items received from the plurality of data processing devices to estimate at least one statistical value for the data.

IPC Classes  ?

• G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
• G06F 17/18 - Complex mathematical operations for evaluating statistical data

Abstract

A management server (30) comprises: an acquisition unit that receives, from a control server that controls a robot performing autonomous driving indoors and outdoors, a current position of the robot or a driving route of the robot; a disaster occurrence sensing unit (334) that senses the occurrence of a disaster and a disaster occurrence area in which the disaster is occurring, on the basis of external information including disaster information; a target robot identification unit (335) that identifies a robot that is positioned, or predicted to be positioned, in the disaster occurrence area, on the basis of the current position of the robot or the driving route of the robot; an evacuation route determination unit (336) that determines, on the basis of the external information and map information, an evacuation route to a pre-set evacuation site for each robot positioned, or predicted to be positioned, in the disaster occurrence area; and an evacuation route recommendation unit (337) that recommends an evacuation route to a terminal device.

IPC Classes  ?

• G05D 1/43 - Control of position or course in two dimensions
• G01C 21/34 - Route searching; Route guidance
• G08B 21/10 - Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
• G08B 27/00 - Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
• G08G 1/13 - Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles to a central station the indicator being in the form of a map

Abstract

The present invention has an object of providing an arithmetic apparatus, a facility management method, and a program that make it possible to acquire current tension applied to outdoor structures in a short period of time and make a bearing determination. The arithmetic apparatus according to the present invention calculates the dip degree of a cable and a distance between poles from the 3D model data of the cable according to Math. C1 and calculates the tension of each cable between the poles from the dip degree, the distance between the poles, and the weight of the cable per unit length according to Math. C2 (when no wind blows) or Math. C4 (when wind blows). Further, the arithmetic apparatus according to the present invention calculates a combined load obtained by converting the tension and the load of the accessory of the poles into an arbitrary position on the poles according to Math. C3.

IPC Classes  ?

• G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
• H02G 1/02 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for overhead lines or cables

Abstract

An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.

IPC Classes  ?

• H04W 72/20 - Control channels or signalling for resource management
• H04B 10/2575 - Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• H04B 10/27 - Arrangements for networking
• H04W 88/10 - Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A propeller guard 2 includes: a propeller guard body 10 configured to surround a propeller 30 of a flight vehicle 20; and a rotating member 40 provided on a side surface of the propeller guard body 10, in which the rotating member 40 is able to rotate around at least a horizontal base axis in a case where the rotating member 40 is in contact with a vertical plane located outside the propeller guard body 10.

IPC Classes  ?

• B64U 30/299 - Rotor guards