Abstract: A neural network circuit includes: a storage part that includes memristors in a lattice shape; a voltage application circuit that applies a bias voltage to the storage part; a controller that controls the voltage application circuit to perform to a selection element, writing, erasing, or reading; and multiple conversion amplification circuits that convert a current flowing into a voltage, and output the voltage.

Abstract: A waveform observation system includes two communication nodes, a waveform observation apparatus, and a signal generation portion. The two communication nodes execute a full-duplex communication by a differential signal through a transmission line. The waveform observation apparatus observes a communication signal waveform in the transmission line in response to an input of a trigger signal. The signal generation portion outputs the trigger signal. One of the two communication nodes generates a clock signal, and transmits a signal in synchronization with the clock signal. Remaining one of the two communication nodes reproduces the clock signal included in the signal received from the one of the two communication nodes, and transmits a signal in synchronization with the clock signal that is reproduced. The signal generation portion outputs the trigger signal when equal to or more than two symbols indicated by the signal output to the transmission line consecutively coincide with one another.

Abstract: A relay device for data between communication cables having a signal line in full duplex communication, includes: communication units connected to the communication cables; and a main controller executing a relay process of the data. Each communication unit includes: an input/output unit of an analog signal; an analog/digital converter converting the analog signal into a digital signal; a generator generating another digital signal based on another analog signal input to another communication unit; and an echo canceller calculating a filter coefficient based on the other digital signal and the digital signal, and executing a cancellation process of removing a component derived from the other digital signal from the digital signal according to the filter coefficient. The communication unit or the main control unit includes a sign determination unit determining based on a time change of the filter coefficient whether a sign of disconnection exists in the signal line.

Abstract: A waveform observation system includes two communication nodes, a waveform observation apparatus, and a signal generation portion. The two communication nodes execute a full-duplex communication by a differential signal through a transmission line. The waveform observation apparatus observes a communication signal waveform in the transmission line in response to an input of a trigger signal. The signal generation portion outputs the trigger signal. One of the two communication nodes generates a clock signal, and transmits a signal in synchronization with the clock signal. Remaining one of the two communication nodes reproduces the clock signal included in the signal received from the one of the two communication nodes, and transmits a signal in synchronization with the clock signal that is reproduced. The signal generation portion outputs the trigger signal when equal to or more than two symbols indicated by the signal output to the transmission line consecutively coincide with one another.

Abstract: A terminal device configured in a system is provided. The system includes a power feeding apparatus and a power receiving apparatus. The power receiving apparatus receives an electric power waveform from the power feeding apparatus through a harness. The power feeding apparatus supplies the power receiving apparatus with an electric power by coupling with the power receiving apparatus. The coupling is conducted by a magnetic field through the harness or an electric field through the harness. The terminal device includes a power conversion portion and a control portion. The power conversion portion is connected to a part of the harness. The control portion controls a power conversion state of the power conversion portion. The control portion controls an input impedance of the power conversion portion to be equal to a characteristic impedance of the harness.

Abstract: A neural network circuit includes: a storage part that includes memristors in a lattice shape; a voltage application circuit that applies a bias voltage to the storage part; a controller that controls the voltage application circuit to perform to a selection element, writing, erasing, or reading; and multiple conversion amplification circuits that convert a current flowing into a voltage, and output the voltage.

Abstract: A communication system includes a transmission path and multiple nodes. At least one of the multiple nodes includes a second communication portion and a control portion in addition to a first communication portion. When the control portion performs a high speed communication, the control portion shifts the first communication portion included in each of the remaining multiple nodes to a sleep mode. The second communication portion performs a differential communication at a higher speed than the first communication portion using a differential signal. In the differential signal, a maximum of a potential difference between the pair of communication lines is equal to or less than a recessive threshold value, and a minimum of the potential difference between the pair of communication lines is a negative voltage value that has a polarity opposite to the recessive threshold value of the first communication portion.

Abstract: A relay device for data between communication cables having a signal line in full duplex communication, includes: communication units connected to the communication cables; and a main controller executing a relay process of the data. Each communication unit includes: an input/output unit of an analog signal; an analog/digital converter converting the analog signal into a digital signal; a generator generating another digital signal based on another analog signal input to another communication unit; and an echo canceller calculating a filter coefficient based on the other digital signal and the digital signal, and executing a cancellation process of removing a component derived from the other digital signal from the digital signal according to the filter coefficient. The communication unit or the main control unit includes a sign determination unit determining based on a time change of the filter coefficient whether a sign of disconnection exists in the signal line.

Abstract: The present disclosure provides a communication system. The communication system includes a radio wave receiver; a transmission node that transmits data; and a reception node that receives the data from the transmission node. The transmission node changes a transmission rate of the data so that a notch point at which a spectrum of a communication waveform decreases overlaps with a frequency selected by the radio wave receiver.

Abstract: A communication system includes a transmission path and multiple nodes. At least one of the multiple nodes includes a second communication portion and a control portion in addition to a first communication portion. When the control portion performs a high speed communication, the control portion shifts the first communication portion included in each of the remaining multiple nodes to a sleep mode. The second communication portion performs a differential communication at a higher speed than the first communication portion using a differential signal. In the differential signal, a maximum of a potential difference between the pair of communication lines is equal to or less than a recessive threshold value, and a minimum of the potential difference between the pair of communication lines is a negative voltage value that has a polarity opposite to the recessive threshold value of the first communication portion.

Abstract: A transmitting device has a transmission data generating part and an output buffer part. The transmission data generating part transmits a data and a clock, which are to be transmitted to a receiving device, and outputs them to the output buffer part. The output buffer part includes a data transmitting part and a clock transmitting part. The clock transmitting part generates and transmits a clock intermittently phase-shifted. The data transmitting part transmits the data in sync with the clock transmitted from the clock transmitting part.

Abstract: A terminal device configured in a system is provided. The system includes a power feeding apparatus and a power receiving apparatus. The power receiving apparatus receives an electric power waveform from the power feeding apparatus through a harness. The power feeding apparatus supplies the power receiving apparatus with an electric power by coupling with the power receiving apparatus. The coupling is conducted by a magnetic field through the harness or an electric field through the harness. The terminal device includes a power conversion portion and a control portion. The power conversion portion is connected to a part of the harness. The control portion controls a power conversion state of the power conversion portion. The control portion controls an input impedance of the power conversion portion to be equal to a characteristic impedance of the harness.

Abstract: The present disclosure provides a communication system. The communication system includes a radio wave receiver; a transmission node that transmits data; and a reception node that receives the data from the transmission node. The transmission node changes a transmission rate of the data so that a notch point at which a spectrum of a communication waveform decreases overlaps with a frequency selected by the radio wave receiver.

Abstract: A power line communication system includes a master side transceiver of a master communication device, a slave side transceiver of a slave communication device, a power wire, and a ground wire. The master communication device includes a voltage changeover portion changing supply voltage in steps. The master side transceiver is connected to the slave side transceiver through the power wire and the ground wire. The slave side transceiver transmits first information to the master side transceiver by a differential transmission. The voltage changeover portion changes the supply voltage so as the master side transceiver to transmit second information to the slave side transceiver. A master communication device includes a master side transceiver and a voltage changeover portion.

Abstract: A transmitting device has a transmission data generating part and an output buffer part. The transmission data generating part transmits a data and a clock, which are to be transmitted to a receiving device, and outputs them to the output buffer part. The output buffer part includes a data transmitting part and a clock transmitting part. The clock transmitting part generates and transmits a clock intermittently phase-shifted. The data transmitting part transmits the data in sync with the clock transmitted from the clock transmitting part.

Abstract: A distortion compensation system includes a first communication node including a first reception unit including an equalizer configured by a first digital filter unit and a first transmission unit including an emphasis circuit configured by a second digital filter unit, and a second communication node including a second transmission unit transmitting a training pattern before receiving normal data from the first communication node. The equalizer converges a filter constant of the first digital filter unit so that an error of the received training pattern is converged. The first transmission unit performs a distortion compensation using the converged filter constant of the first digital filter unit as at least a part of a filter constant of the second digital filter unit of the emphasis circuit, and then transmits the data.

Abstract: A data communication system includes a master and a slave. The master transmits a first subject signal including a first subject data to the slave via a transmission line. The slave extracts a clock signal from the first subject signal by performing a clock data recovery process and determines the first subject data based on the first subject signal. The slave transmits a second subject signal including a second subject data to the master during an existing period of the first subject signal without interfering an extracting of the clock signal and a determination of the first subject data. The master receives the second subject signal and cancels a waveform component of the first subject signal from a waveform of the second subject signal, and then determines the second subject data based on the second subject signal.

Abstract: A transmitter 1 comprises a clock generation portion 4, FIFO portion 6, and serial signal creation portion 7. The clock generation portion 4 performs modulation by spectrum spreading of a reference clock CKref, and generates a first clock CK1 with a high modulation factor and a second clock CK2 with a low modulation factor. The FIFO portion 6 takes as inputs the first clock CK1 which has been output from the clock generation portion 4 to a data generation portion 2 and output from the data generation portion 2, a parallel data signal which has been synchronized with the first clock CK1 in the data generation portion 2 and output, and the second clock CK2 output from the clock generation portion 4, and synchronizes the parallel data signal Pdata with the second clock CK2 and outputs the parallel data signal Pdata. The serial signal creation portion 7 converts a parallel data signal PRdata into a serial data signal Sdata.

Abstract: A data reception apparatus calculates an integrated number of bits by integrating the number of bits in a received bit string; calculates an integrated number of samples by integrating the number of samples obtained by oversampling each bit; obtains a fitting line indicating correspondence between the integrated number of bits and the integrated number of samples based on a plurality of points of which each point corresponds to either only a rise edge or only a fall edge of each bit in the received bit string; and determines a bit length in the received bit string based on the fitting line.

Abstract: A distortion compensation system includes a first communication node including a first reception unit including an equalizer configured by a first digital filter unit and a first transmission unit including an emphasis circuit configured by a second digital filter unit, and a second communication node including a second transmission unit transmitting a training pattern before receiving normal data from the first communication node. The equalizer converges a filter constant of the first digital filter unit so that an error of the received training pattern is converged. The first transmission unit performs a distortion compensation using the converged filter constant of the first digital filter unit as at least a part of a filter constant of the second digital filter unit of the emphasis circuit, and then transmits the data.