Abstract: The present technology relates to a reception device that can realize low power consumption. The reception device comprises an RF unit, a demodulating unit, and a control unit. The RF unit includes a filtering unit, an amplifying unit, and an A/D converter. The filtering unit allows an IF signal to pass within a predetermined band. The IF signal is acquired by mixing a reception signal received from a positioning satellite with a local oscillation signal generated by a local oscillation unit to perform frequency conversion of the reception signal into an intermediate frequency. The amplifying unit amplifies the IF signal with a predetermined amplification factor. The A/D converter converts the IF signal from an analog signal into a digital signal. The demodulating unit demodulates the digital signal. Based on the demodulation, the control unit controls an operation of the RF unit. The present technology is applicable to a GNSS receiver.

Abstract: The present technology relates to a reception device that can realize low power consumption. There are provided an RF unit, a demodulating unit, and a control unit . The RF unit includes a filtering unit, an amplifying unit, and an A/D converter. The filtering unit allows an IF signal to pass within a predetermined band. The IF signal is acquired by mixing a reception signal received from a positioning satellite with a local oscillation signal generated by a local oscillation unit to perform frequency conversion of the reception signal into an intermediate frequency. The amplifying unit amplifies the IF signal with a predetermined amplification factor. The A/D converter converts the IF signal from an analog signal into a digital signal. The demodulating unit demodulates the digital signal. Based on a result of the demodulation by the demodulating unit, the control unit controls an operation of the RF unit. The present technology can be applied to a GNSS receiver, for example.

Abstract: A receiving device according to an embodiment of the present disclosure receives a signal in which a data symbol and invalidation data are arranged. The receiving device includes an amplifying unit that amplifies the input signal and a gain adjusting unit that adjusts gain of the amplifying unit in a section of the invalidation data. The present disclosure can be applied to a receiving device that receives a radio signal of an OFDM system.

Abstract: To enable processing of a signal at an appropriate level. An analog section in which an acquired signal is processed in an analog fashion and a digital section in which the signal processed in the analog section is digitally processed are included, wherein the analog section includes an adjustment unit that adjusts a gain discretely and the digital section includes a digital step compensation unit that compensates for discrete gain adjustments in the analog section. The digital step compensation unit responds to a transient step in which a gain steeply converts in the analog section and compensates with inverse characteristics of a transient response. The present technology can be applied to an AGC (Automatic Gain Control) system.

Abstract: There is provided a signal processing apparatus including an oscillating unit having a division ratio of an integer that performs oscillation at a predetermined oscillation frequency, a frequency transforming unit that transforms a frequency of a signal of a processing target using a signal of the oscillation frequency obtained by the oscillation of the oscillating unit, and a correcting unit that corrects an error of the frequency of the signal of the processing target transformed by the frequency transforming unit based on an error of the oscillation frequency.

Abstract: A receiving device according to an embodiment of the present disclosure receives a signal in which a data symbol and invalidation data are arranged. The receiving device includes an amplifying unit that amplifies the input signal and a gain adjusting unit that adjusts gain of the amplifying unit in a section of the invalidation data. The present disclosure can be applied to a receiving device that receives a radio signal of an OFDM system.

Abstract: To enable processing of a signal at an appropriate level. An analog section in which an acquired signal is processed in an analog fashion and a digital section in which the signal processed in the analog section is digitally processed are included, wherein the analog section includes an adjustment unit that adjusts a gain discretely and the digital section includes a digital step compensation unit that compensates for discrete gain adjustments in the analog section. The digital step compensation unit responds to a transient step in which a gain steeply converts in the analog section and compensates with inverse characteristics of a transient response. The present technology can be applied to an AGC (Automatic Gain Control) system.

Abstract: A reception device and corresponding method for maintaining a high dynamic range of an AD converter circuit and preventing excessive input to the AD converter circuit is disclosed. For example, a reception device includes a variable gain amplifier circuit that amplifies an input analog signal with a gain controlled by a predetermined control signal, an analog-to-digital converter circuit an overload detector circuit with the same frequency characteristic as the analog-to-digital converter circuit. The overload detector circuit outputs a signal according to a comparison between a level of a signal input to the analog-to-digital converter circuit and a predetermined threshold. The signal that lowers the gain of the variable gain amplifier circuit more greatly is selected out of the signal from the overload detector circuit and another signal, and the gain of the variable gain amplifier circuit is controlled on the basis of the selected signal.

Abstract: Disclosed herein is a reception apparatus including: a reception section configured to receive a signal at a frequency being changed; and a control section configured such that before changing the frequency to receive the signal, the control section stores control information about the reception section receiving the signal at the current frequency as last control information and that upon receiving again the signal at the frequency in effect before the change, the control section sets the last control information to the reception section as an initial value.

Abstract: A reception device and corresponding method for maintaining a high dynamic range of an AD converter circuit and preventing excessive input to the AD converter circuit is disclosed. For example, a reception device includes a variable gain amplifier circuit that amplifies an input analog signal with a gain controlled by a predetermined control signal, an analog-to-digital converter circuit an overload detector circuit with the same frequency characteristic as the analog-to-digital converter circuit. The overload detector circuit outputs a signal according to a comparison between a level of a signal input to the analog-to-digital converter circuit and a predetermined threshold. The signal that lowers the gain of the variable gain amplifier circuit more greatly is selected out of the signal from the overload detector circuit and another signal, and the gain of the variable gain amplifier circuit is controlled on the basis of the selected signal.

Abstract: There is provided a signal processing apparatus including an oscillating unit having a division ratio of an integer that performs oscillation at a predetermined oscillation frequency, a frequency transforming unit that transforms a frequency of a signal of a processing target using a signal of the oscillation frequency obtained by the oscillation of the oscillating unit, and a correcting unit that corrects an error of the frequency of the signal of the processing target transformed by the frequency transforming unit based on an error of the oscillation frequency.

Abstract: An information processing device for processing reception signals converted into digital signals, includes: a first conversion unit for executing sampling rate conversion of each of the digital signals to be computed with each tap coefficient of a K'th-order FIR filter; a filter computing unit for executing computation processing of the K'th order FIR filter on K digital signals each of which have been subjected to sampling rate conversion by the first conversion unit; and a control unit for controlling sampling rate conversion of the digital signals by the first conversion unit, and the computation processing of the K'th order FIR filter by the filter computing unit.

Abstract: A system and a method for communicating data at a rate exceeding about a gigabit per second is described. The system may include circuitry and a current-sourcing module. The circuitry may include an output couplable to a load. The circuitry may output from the output a low voltage differential signal having a first current that drives the load from a first voltage at a first time to a second voltage at a second time. The current-sourcing module may apply a second current to the output at a third time, which occurs at about the first time.

Abstract: Disclosed herein is a reception apparatus including: a reception section configured to receive a signal at a frequency being changed; and a control section configured such that before changing the frequency to receive the signal, the control section stores control information about the reception section receiving the signal at the current frequency as last control information and that upon receiving again the signal at the frequency in effect before the change, the control section sets the last control information to the reception section as an initial value.

Abstract: A receiver supporting a plurality of radio communication systems having different specifications includes a setting unit, a clock generation circuit, a voltage-current conversion amplifier, a switch, integrators, an AD conversion circuit, and a feedback circuit. The setting unit sets a value suitable for a carrier frequency used in one selected radio communication system. The clock generation circuit generates a first clock having a first frequency and a second clock having a second frequency. The conversion amplifier converts an input voltage signal into a current signal. The switch switches between connection and disconnection modes in accordance with the first clock to output the current signal. Each integrator operates in accordance with the second clock and includes two or more switched capacitor circuits and an operational amplifier. The AD conversion circuit converts a signal supplied from the preceding integrator into digital form. The feedback circuit operates in accordance with the second clock.

Abstract: A wireless communication apparatus for receiving a packet formed of a signal modulated by OFDM includes the following elements. A band-pass filter extracts an OFDM signal of a desired band. A low-noise amplifier having a gain controlled according to a received-signal intensity amplifies the desired OFDM signal. A frequency converter down-converts the amplified OFDM signal into a baseband signal. An analog-digital converter converts the baseband signal into a digital signal. A first high-pass filter removes a DC offset from the baseband signal corresponding to a predetermined preamble portion of the packet. A frequency-offset estimator estimates a frequency offset from the sample signals constituting the baseband signal from which the DC offset has been removed by the first high-pass filter. A frequency-offset corrector removes the estimated frequency offset from the baseband signal.

Abstract: This application discloses, among other things, a receiving device including channel signal output unit for sampling a received signal at a sampling rate switched one of in a predetermined range and between a plurality of values and outputting a channel signal, control unit for controlling the sampling rate in the channel signal output unit, response estimation unit for estimating a response based on the channel signal output by the channel signal output unit, evaluation unit for evaluating a reception characteristic based on an estimation result of the response by the response estimation unit, and determination unit for determining the sampling rate in the channel signal output unit based on an evaluation of the reception characteristic at a plurality of sampling rates by the evaluation unit.

Abstract: A receiver apparatus is disclosed. The receiver apparatus includes a plurality of signal receiving devices and a plurality of channel signal outputting devices for sampling signals received by the signal receiving devices at sampling rates switched within a predetermined range or between multiple values and outputting channel signals. The receiver apparatus also includes control devices for controlling the sampling rates in the channel signal outputting devices. The receiver apparatus also includes response estimating devices for estimating responses on the basis of the channel signals output from the channel signal outputting devices. The receiver apparatus also includes evaluating devices for evaluating reception characteristics on the basis of the responses estimated by the response estimating devices.

Abstract: A system and a method for communicating data at a rate exceeding about a gigabit per second is described. The system may include circuitry and a current-sourcing module. The circuitry may include an output couplable to a load. The circuitry may output from the output a low voltage differential signal having a first current that drives the load from a first voltage at a first time to a second voltage at a second time.

Abstract: An information processing device for processing reception signals converted into digital signals, includes: a first conversion unit for executing sampling rate conversion of each of the digital signals to be computed with each tap coefficient of a K'th-order FIR filter; a filter computing unit for executing computation processing of the K'th order FIR filter on K digital signals each of which have been subjected to sampling rate conversion by the first conversion unit; and a control unit for controlling sampling rate conversion of the digital signals by the first conversion unit, and the computation processing of the K'th order FIR filter by the filter computing unit.