Abstract: Provided is an improved estimation and identification device that estimates the position of a plurality of identification targets and identifies the plurality of identification targets.

Abstract: A travel sickness estimation system includes an estimation unit and an output unit. The estimation unit is configured to perform estimation processing of estimating, based on person information indicating conditions of a person who is on board a moving vehicle, whether or not the person is in circumstances that would cause travel sickness for him or her. The output unit is configured to output a result of the estimation processing performed by the estimation unit.

Abstract: This sensor includes: a sensing circuit for detecting an object moving along a path; a receiving circuit for receiving, from other sensors that have detected the object, identification information for the other sensors; and a control circuit for causing a storage circuit to store the most recently received identification information for another sensor in response to the detection of the object by the sensing circuit.

Abstract: In a radio network system containing a first radio apparatus that performs central control and a second radio apparatus, the second radio apparatus receives a first signal containing first identification information indicating a transmission source during a first reception period, receives a second signal containing second identification information indicating a transmission source during a second reception period, measures first reception information on reception of the first signal, measures second reception information on reception of the second signal, and transmits first measurement information containing the first reception information and the first identification information and second measurement information containing the second reception information and the second identification information to the first radio apparatus.

Abstract: A mobile radio apparatus transmits to a plurality of fixed radio apparatuses, a fingerprint that indicates a reception strength distribution of radio signals from the plurality of fixed radio apparatuses. Each of the plurality of fixed radio apparatuses in which a learning model is installed inputs the fingerprint to the learning model and transmits a degree of proximity of the mobile radio apparatus output from the learning model to another one or more of the plurality of fixed radio apparatuses, and determines a position of the mobile radio apparatus, based on a first degree of proximity output from the learning model and a second degree of proximity received from the other one or more of the plurality of fixed radio apparatuses.

Abstract: A radio communication apparatus includes reception circuitry, which, in operation, receives a first frame transmitted by a first node in a wireless mesh network; and control circuitry, which, in operation, configures a relay destination node as second information in case that the first frame includes first information indicating a third node that performs transmission in cooperation with a second node that transmits a radio signal to a radio link in which communication quality is less than a threshold in the wireless mesh network and in case that the third node included in the first information indicates the radio communication apparatus, the relay destination node being a node to which the second node transmits the first frame, the second information indicating a relay destination node to which the third node transmits the first frame.

Abstract: A radio communication apparatus includes: control circuitry, which, in operation, selects, as a radio channel used for transmission, at least one radio channel among a plurality of radio channels based on information on a reduction time of a sum of transmission time per unit time in each of the plurality of radio channels; and radio circuitry, which, in operation, performs transmission using the selected radio channel.

Abstract: A phase shifter includes a first capacitor connected to a first line to which a first input signal is input, a second capacitor connected to a second line to which a second input signal having a first phase difference with respect to the first input signal is input, and a combining circuit that is connected to the first line and the second line and that outputs a combined signal having a phase determined depending on a first capacitance ratio between the first capacitor and the second capacitor.

Abstract: Provided is an improved estimation and identification device that estimates the position of a plurality of identification targets and identifies the plurality of identification targets.

Abstract: A travel sickness estimation system includes an estimation unit and an output unit. The estimation unit is configured to perform estimation processing of estimating, based on person information indicating conditions of a person who is on board a moving vehicle, whether or not the person is in circumstances that would cause travel sickness for him or her. The output unit is configured to output a result of the estimation processing performed by the estimation unit.

Abstract: A phase shifter includes a first capacitor connected to a first line to which a first input signal is input, a second capacitor connected to a second line to which a second input signal having a first phase difference with respect to the first input signal is input, and a combining circuit that is connected to the first line and the second line and that outputs a combined signal having a phase determined depending on a first capacitance ratio between the first capacitor and the second capacitor.

Abstract: A gain controller sets a gain code indicating an optimum gain, a cutoff frequency code indicating a cutoff frequency, and a number of bits code indicating a number of bits. An AEQ/VGA gain controller sets a frequency characteristic code indicating a frequency characteristic, a gain code indicating a gain after correction, and a number of bits code indicating a number of bits. An AEQ/VGA amplifies a baseband received signal on the basis of a gain code and corrects a frequency characteristic of the baseband received signal on the basis of a frequency characteristic code. An HPF cuts off a band below a cutoff frequency of an output signal from the AEQ/VGA on the basis of a cutoff frequency code. An ADC quantizes an output signal from the HPF using a number of bits based on a number of bits code and generates a digital received signal.

Abstract: A switch control circuit includes: a clock generating circuit that generates one or more periodic signals having a predetermined cycle; a clock adjusting circuit that generates one or more control signals by adjusting a bias voltage of the one or more periodic signals and changing an ON period of the one or more periodic signals; and at least one switching circuit including one or more switches that are switched to ON if respective amplitudes of the generated one or more control signals is equal to or higher than a threshold value and that are switched to OFF if the respective amplitudes of the generated one or more control signals is less than the threshold value.

Abstract: A radio receiving apparatus includes an RF front-end unit that performs gain control and downconversion on a received signal, an analog equalizer that performs an analog equalization process on an output signal from the RF front-end unit in accordance with a coefficient of analog equalization, an analog/digital converter that samples and quantizes an output signal from the analog equalizer, a digital equalizer that performs a digital equalization process on an output signal from the analog/digital converter in accordance with a coefficient of digital equalization, and a coefficient-of-equalization calculator that calculates the coefficient of analog equalization and the coefficient of digital equalization by estimating frequency characteristics with use of the output signal from the analog/digital converter.

Abstract: An equalizer circuit includes an phase-to-phase connectors including an phase-to-phase capacitor and four phase-to-phase switches, four output buffers, and control signal generation circuitry. One terminal of each phase-to-phase switches is connected to one of four connection paths on which four conversion signals being different in phase by 90° are input. The other one terminal of each phase-to-phase switches is connected to the phase-to-phase capacitor. Each output buffer is connected to one of the four connection paths and outputs an output signal. The control signal generation circuitry outputs control signals to control turning-on/off of the respective four phase-to-phase switches. A closing of the first, second, third, and fourth phase-to-phase switches are started from any one of phase-to-phase switches in one of a first ascending circulation and a first descending circulation based on the 4-phase control signals.

Abstract: A gain controller sets a gain code indicating an optimum gain, a cutoff frequency code indicating a cutoff frequency, and a number of bits code indicating a number of bits. An AEQ/VGA gain controller sets a frequency characteristic code indicating a frequency characteristic, a gain code indicating a gain after correction, and a number of bits code indicating a number of bits. An AEQ/VGA amplifies a baseband received signal on the basis of a gain code and corrects a frequency characteristic of the baseband received signal on the basis of a frequency characteristic code. An HPF cuts off a band below a cutoff frequency of an output signal from the AEQ/VGA on the basis of a cutoff frequency code. An ADC quantizes an output signal from the HPF using a number of bits based on a number of bits code and generates a digital received signal.

Abstract: A radio receiving apparatus includes an RF front-end unit that performs gain control and downconversion on a received signal, an analog equalizer that performs an analog equalization process on an output signal from the RF front-end unit in accordance with a coefficient of analog equalization, an analog/digital converter that samples and quantizes an output signal from the analog equalizer, a digital equalizer that performs a digital equalization process on an output signal from the analog/digital converter in accordance with a coefficient of digital equalization, and a coefficient-of-equalization calculator that calculates the coefficient of analog equalization and the coefficient of digital equalization by estimating frequency characteristics with use of the output signal from the analog/digital converter.

Abstract: An equalizer circuit includes an phase-to-phase connectors including an phase-to-phase capacitor and four phase-to-phase switches, four output buffers, and control signal generation circuitry. One terminal of each phase-to-phase switches is connected to one of four connection paths on which four conversion signals being different in phase by 90° are input. The other one terminal of each phase-to-phase switches is connected to the phase-to-phase capacitor. Each output buffer is connected to one of the four connection paths and outputs an output signal. The control signal generation circuitry outputs control signals to control turning-on/off of the respective four phase-to-phase switches. A closing of the first, second, third, and fourth phase-to-phase switches are started from any one of phase-to-phase switches in one of a first ascending circulation and a first descending circulation based on the 4-phase control signals.

Abstract: A switch control circuit includes: a clock generating circuit that generates one or more periodic signals having a predetermined cycle; a clock adjusting circuit that generates one or more control signals by adjusting a bias voltage of the one or more periodic signals and changing an ON period of the one or more periodic signals; and at least one switching circuit including one or more switches that are switched to ON if respective amplitudes of the generated one or more control signals is equal to or higher than a threshold value and that are switched to OFF if the respective amplitudes of the generated one or more control signals is less than the threshold value.

Abstract: An extraction device includes an acquiring unit, an operation control unit, and an extracting unit. The acquiring unit acquires a distribution request for advertising content including transmission source information. The operation control unit performs a determination process of determining whether an advertising content corresponds to a distribution condition that is set in advance for each advertising content and a calculation process of calculating a score indicating a degree of match between the transmission source information and feature information of the advertising content, with respect to each single advertising content in a group of advertising contents as distribution candidates, on the basis of the transmission source information acquired by the acquiring unit. The extracting unit extracts an advertising content corresponding to the distribution request from the group of the advertising contents on the basis of results of the processes performed by the operation control unit.