Abstract: A signal processing circuit includes: a processor configured to adjust phases of reception samples which is supplied at a supply interval, according to a phase adjustment amount; and a processing circuit including a finite impulse response (FIR) filter with taps and configured to process, by the FIR filter, each of the reception samples and output output symbols at an output interval different from the supply interval, the processor is configured to: derive initial values of tap coefficients for the respective taps; and derive the phase adjustment amount such that a center of centroids of the tap coefficients at respective output time points of the output symbols coincides with a center of a number of taps of the FIR filter, the tap coefficients at respective output time points of the output symbols being set according to a deviation between the supply interval and the output interval and the initial values.

Abstract: A signal processing circuit includes: a processor configured to adjust phases of reception samples which is supplied at a supply interval, according to a phase adjustment amount; and a processing circuit including a finite impulse response (FIR) filter with taps and configured to process, by the FIR filter, each of the reception samples and output output symbols at an output interval different from the supply interval, the processor is configured to: derive initial values of tap coefficients for the respective taps; and derive the phase adjustment amount such that a center of centroids of the tap coefficients at respective output time points of the output symbols coincides with a center of a number of taps of the FIR filter, the tap coefficients at respective output time points of the output symbols being set according to a deviation between the supply interval and the output interval and the initial values.

Abstract: An amplitude adjustment circuit includes a memory that stores correspondence information between frequency distributions of an amplitude and adjustment coefficients, a processor configured to generate a frequency distribution of amplitude of data for which adaptive equalization processing has been executed, acquire the correspondence information between frequency distributions of the amplitude and adjustment coefficients from the memory, select the adjustment coefficient based on a result of comparison between the frequency distributions included in the correspondence information acquired by the acquiring unit and the frequency distribution generated by the generating unit, and adjust a gain of the data based on the adjustment coefficient selected by the selecting unit.

Abstract: An amplitude adjustment circuit includes a memory that stores correspondence information between frequency distributions of an amplitude and adjustment coefficients, a processor configured to generate a frequency distribution of amplitude of data for which adaptive equalization processing has been executed, acquire the correspondence information between frequency distributions of the amplitude and adjustment coefficients from the memory, select the adjustment coefficient based on a result of comparison between the frequency distributions included in the correspondence information acquired by the acquiring unit and the frequency distribution generated by the generating unit, and adjust a gain of the data based on the adjustment coefficient selected by the selecting unit.

Abstract: An optical transmitter includes a signal-process circuit to process a transmission signal; an optical modulator to modulate light input by the transmission signal output from the signal-process circuit, and output an optical signal; and a control circuit to output a control signal for controlling a carrier frequency of the optical signal, to the signal-process circuit, wherein the signal-process circuit comprises a phase-rotation circuit to apply phase rotation of the carrier frequency on a complex plane according to the control signal, to the transmission signal, a map-adjustment circuit to determine scale factor for a map according to an angle of the phase rotation, and a modulation-format-map circuit to map the transmission signal on the complex plane based on a modulation format and the scale factor, wherein the phase-rotation circuit is configured to rotate, on the complex plane, the phase of the carrier frequency mapped based on the scale factor.

Abstract: An optical transmitter includes a signal-processing circuit configured to perform signal processing on a first transmission signal and output a second transmission signal; an optical modulator configured to modulate input light with the second transmission signal and to output an optical signal; and a control circuit configured to output a control signal for controlling a carrier frequency of the optical signal to the signal-processing circuit, wherein the signal-processing circuit includes a map-adjustment circuit configured to adjust, based on the control signal and a modulation format, a map position of the second transmission signal onto a complex plane, and a phase-rotation circuit configured to apply, on the complex plane, rotation of a phase of the carrier frequency corresponding to the control signal to the second transmission signal at the adjusted map position.

Abstract: A circuit includes a calculation circuit configured to calculate a noise power of a predetermined-training-sequence pattern repeatedly included in a first signal input into an adaptive equalizer, based on a second signal obtained by compensating the first signal by a compensation circuit, a channel-estimation value based on the second signal, and the predetermined-training-sequence pattern; and an average circuit configured to obtain an average value of estimation values of frequency offsets based on the predetermined-training-sequence pattern having the noise power equal to or smaller than a predetermined power, among estimation values of frequency offsets based on the predetermined-training-sequence pattern, wherein the compensation circuit is configured to compensate a frequency offset of the predetermined-training sequence pattern based on the average value and thereby obtain the second signal, and the adaptive equalizer is configured to perform adaptive-equalization processing of the first signal with a

Abstract: A signal processing apparatus includes: a filter; and a filter control circuit, wherein the filter control circuit is configured to: detect a power of signals output from the filter; determine one of a plurality of numerical ranges to which the power belongs; update a filter coefficient of the filter according to a determination result; count a number of the signals having the power of a first value or more; set an invalid area which becomes a target not to be determined for each of one or more boundaries between the plurality of numerical ranges when the number of the signals becomes a second value or more; and control a width of the invalid area based on the number of signals.

Abstract: A circuit includes a calculation circuit configured to calculate a noise power of a predetermined-training-sequence pattern repeatedly included in a first signal input into an adaptive equalizer, based on a second signal obtained by compensating the first signal by a compensation circuit, a channel-estimation value based on the second signal, and the predetermined-training-sequence pattern; and an average circuit configured to obtain an average value of estimation values of frequency offsets based on the predetermined-training-sequence pattern having the noise power equal to or smaller than a predetermined power, among estimation values of frequency offsets based on the predetermined-training-sequence pattern, wherein the compensation circuit is configured to compensate a frequency offset of the predetermined-training sequence pattern based on the average value and thereby obtain the second signal, and the adaptive equalizer is configured to perform adaptive-equalization processing of the first signal with a

Abstract: An in-vehicle load control system configured to controllably drive one or more loads on a vehicle according to an input signal. The system includes a first electronic control portion configured to perform signal processing based on the input signal, and a second electronic control portion configured to controllably drive the load. A backup signal channel is provided independently of a signal channel through which a signal is transmitted in a multiplex communication portion to input the input signal to the second electronic control portion. The second electronic control portion receives a first control signal via the signal channel in the multiplex communication portion and a second control signal via the backup signal channel, and controllably drives the load by preferentially treating the first control signal when the ignition signal is on and by preferentially treating the second control signal when the ignition signal is off.

Abstract: An optical receiving device includes: an adaptive equalizer that includes a position estimation unit configured to estimate, based on a first signal component and a second signal component of a reception signal generated by reception of a training sequence pattern transmitted from an optical transmitter, a symbol position of the reception signal, and generates an estimated symbol position, a delay unit configured to provide a delay difference between the first signal component and the second signal component, a control unit configured to set a plurality of symbol displacement amount candidates of displacement amounts for the estimated symbol position, causes the delay unit to generate a plurality of delay differences, and generates a channel estimation symbol position used for channel estimation, and an error rate calculation unit configured to calculate an error rate of the signal restored by an adaptive equalization unit.

Abstract: A signal processing apparatus includes: a filter; and a filter control circuit, wherein the filter control circuit is configured to: detect a power of signals output from the filter; determine one of a plurality of numerical ranges to which the power belongs; update a filter coefficient of the filter according to a determination result; count a number of the signals having the power of a first value or more; set an invalid area which becomes a target not to be determined for each of one or more boundaries between the plurality of numerical ranges when the number of the signals becomes a second value or more; and control a width of the invalid area based on the number of signals.

Abstract: An optical receiving device includes: an adaptive equalizer that includes a position estimation unit configured to estimate, based on a first signal component and a second signal component of a reception signal generated by reception of a training sequence pattern transmitted from an optical transmitter, a symbol position of the reception signal, and generates an estimated symbol position, a delay unit configured to provide a delay difference between the first signal component and the second signal component, a control unit configured to set a plurality of symbol displacement amount candidates of displacement amounts for the estimated symbol position, causes the delay unit to generate a plurality of delay differences, and generates a channel estimation symbol position used for channel estimation, and an error rate calculation unit configured to calculate an error rate of the signal restored by an adaptive equalization unit.

Abstract: An in-vehicle load control system configured to controllably drive one or more loads on a vehicle according to an input signal. The system includes a first electronic control portion configured to perform signal processing based on the input signal, and a second electronic control portion configured to controllably drive the load. A backup signal channel is provided independently of a signal channel through which a signal is transmitted in a multiplex communication portion to input the input signal to the second electronic control portion. The second electronic control portion receives a first control signal via the signal channel in the multiplex communication portion and a second control signal via the backup signal channel, and controllably drives the load by preferentially treating the first control signal when the ignition signal is on and by preferentially treating the second control signal when the ignition signal is off.

Abstract: A wiring inspection apparatus includes a first calculating unit, a second calculating unit, and an output unit. The first calculating unit calculates the number of components arranged along two sides, one of which extends in a first direction and the other one of which extends in a second direction, of a minimum rectangle including a transmission component and a reception component. The second calculating unit calculates the number of the components arranged along the two sides at a predetermined arrangement density of relay components. When the number of the relay components is greater than the number of the components calculated by the second calculating unit, the output unit outputs information indicating the presence of a wiring extending in a direction opposite to a direction from the transmission component to the reception component among wirings connecting the transmission component, the reception component, and the relay components.

Abstract: Provided is a seat pad 1 having a fastener member 4 on a front surface side of a pad body 2 made of a foaming resin, which includes: a ventilation member 5, one end portion of the ventilation member being located in the vicinity of the fastener member 4, and the other end portion of the ventilation member extending on a rear surface side of the pad body 2.

Abstract: A wiring inspection apparatus includes a dividing unit, a calculating unit, and an output unit. The dividing unit draws a boundary line in a predetermined area between a transmission component and a reception component, to divide the predetermined area into a first area containing the transmission component and a second area containing the reception component. The transmission component transmits a signal to the reception component via relay components. The calculating unit calculates a number of wirings that connect the components across the boundary line, based on positions of the transmission component, the reception component, and the relay components in the predetermined area. The output unit outputs information indicating the presence of a wiring extending in a direction opposite to a direction from the transmission component to the reception component, when the number of the wirings calculated by the calculating unit is equal to or greater than a predetermined value.

Abstract: A wiring inspection apparatus includes a first calculating unit, a second calculating unit, and an output unit. The first calculating unit calculates the number of components arranged along two sides, one of which extends in a first direction and the other one of which extends in a second direction, of a minimum rectangle including a transmission component and a reception component. The second calculating unit calculates the number of the components arranged along the two sides at a predetermined arrangement density of relay components. When the number of the relay components is greater than the number of the components calculated by the second calculating unit, the output unit outputs information indicating the presence of a wiring extending in a direction opposite to a direction from the transmission component to the reception component among wirings connecting the transmission component, the reception component, and the relay components.

Abstract: A wiring inspection apparatus includes a dividing unit, a calculating unit, and an output unit. The dividing unit draws a boundary line in a predetermined area between a transmission component and a reception component, to divide the predetermined area into a first area containing the transmission component and a second area containing the reception component. The transmission component transmits a signal to the reception component via relay components. The calculating unit calculates a number of wirings that connect the components across the boundary line, based on positions of the transmission component, the reception component, and the relay components in the predetermined area. The output unit outputs information indicating the presence of a wiring extending in a direction opposite to a direction from the transmission component to the reception component, when the number of the wirings calculated by the calculating unit is equal to or greater than a predetermined value.

Abstract: A process and a facility for manufacturing foam molded resin articles are provided which facilitate for a secondary material at least partially formed of a synthetic resin to be arranged so as to extend along a curved surface of a mold inner surface, and further to be released from the mold after molding.