Patent application number | Description | Published |
20090092197 | OFDM DEMODULATION DEVICE AND METHOD - The present invention provides an OFDM demodulation device for demodulating an orthogonal frequency division multiplexed (OFDM) signal whose transmission unit is a transmission symbol produced by quadrature modulation in such a way that information is divided for a plurality of subcarriers in a predetermined band. The OFDM demodulation device includes a carrier frequency offset detecting circuit ( | 04-09-2009 |
20090221254 | RECEPTION APPARATUS, RECEPTION METHOD AND PROGRAM - A reception apparatus including an extraction section; a transmission line characteristic estimation section; an interpolation section; a compensation section; a detection section; and a selection section. | 09-03-2009 |
20100046652 | RECEIVING DEVICE, SIGNAL PROCESSING METHOD, AND PROGRAM - A receiving device includes: a pilot extracting section; a first estimating section; a second estimating section; a third estimating section; a distortion correcting section; and a filter controlling section. | 02-25-2010 |
20100074382 | RECEIVING DEVICE, RECEIVING METHOD, AND PROGRAM - A receiving device includes a pilot signal extractor, an estimator, an interpolator, a distortion corrector, a calculator, and a determiner. | 03-25-2010 |
20100080329 | INFORMATION PROCESSOR AND INFORMATION PROCESSING METHOD, DISPLAY DEVICE, AND PROGRAM - Disclosed herein is an information processor, including: a receiving section configured to receive an OFDM signal transmitted in accordance with an OFDM system; a FFT arithmetically operating section configured to carry out FFT for a signal within a predetermined interval of the OFDM signal; a delay profile estimating section configured to estimate delay profiles from the OFDM signal received by the receiving section; an inter-symbol interference amount estimating section configured to estimate inter-symbol interference amounts for a plurality of candidates for the predetermined interval, respectively, by using the delay profiles estimated by the delay profile estimating section; and a searching section configured to search for the candidate having the minimum inter-symbol interference amount estimated by the inter-symbol interference amount estimating section from among the plurality of candidates in the predetermined interval, and supply data on the candidate thus searched for as the predetermined interval to the FFT arithmetically operating section. | 04-01-2010 |
20100310013 | SIGNAL RECEIVING APPARATUS, METHOD, PROGRAM AND SYSTEM - A signal receiving apparatus includes: an acquisition section configured to acquire an Orthogonal Frequency Division Multiplexing signal resulting from combination of a plurality of signals transmitted by a plurality of signal transmitting apparatus by adoption of an Orthogonal Frequency Division Multiplexing method; and a demodulation section configured to carry out partial processing of processing to demodulate the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section by making use of either first pilot signals or second pilot signals where the first pilot signals are pilot signals extracted from the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section as signals having the same phase for all the signal transmitting apparatus, and the second pilot signals are pilot signals extracted from the Orthogonal Frequency Division Multiplexing signal acquired by the acquisition section as signals having different phases depending on the signal transmitting apparatus. | 12-09-2010 |
20110013729 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND RECEPTION SYSTEM - Disclosed herein is a signal processing apparatus including a processing block configured to perform a carrier shift amount detection process for detecting a carrier shift amount constituting a carrier error used for demodulating an orthogonal frequency division multiplexing signal known as the OFDM signal; and a correction block configured to correct the OFDM signal in accordance with the carrier shift amount. The OFDM signal includes a first preamble signal including subcarriers, and a second preamble signal including subcarriers of which the spacing is narrower than the spacing of the subcarriers included in the first preamble signal. The second preamble signal includes pilot signals which are known signals located at intervals of a predetermined number of subcarriers. The processing block detects the carrier shift amount using a correlation of the subcarriers included in one such second preamble signal. | 01-20-2011 |
20110019782 | SIGNAL PROCESSING APPARATUS AND METHOD - Disclosed herein is a signal processing apparatus, including: a computation device operable to perform transform computation adapted to Fourier-transform a time domain OFDM i.e., Orthogonal Frequency Division Multiplexing signal into a frequency domain OFDM signal; a processing device operable to perform carrier frequency offset detection adapted to detect an estimated carrier frequency offset that is an error of a carrier used for demodulation of the OFDM signal; and a carrier frequency offset correction device operable to perform carrier frequency offset correction adapted to correct the carrier frequency offset of the frequency domain OFDM signal in accordance with the estimated carrier frequency offset. | 01-27-2011 |
20110199207 | RECEIVING APPARATUS, INFORMATION PROCESSING METHOD AND PROGRAM - An information receiving apparatus that includes a receiver that receives an alert signal including a predetermined number of bits, and a controller that detects that the alert signal includes alert information by processing a subset of the predetermined number of bits of the alert signal, and outputs an indication corresponding to the detection. | 08-18-2011 |
20110200145 | RECEIVING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM, AND SEMICONDUCTOR CHIP - A receiving device includes: a receiving section configured to output a detection flag indicating that warning information is transmitted or at least part of the warning information if the warning information is transmitted; and a controlling section configured to start processing for outputting warning if the detection flag or the at least part of the warning information is supplied, wherein the supply of the detection flag or the at least part of the warning information to the controlling section is carried out by input of the detection flag or the at least part of the warning information output from a pin of a first semiconductor chip on which the receiving section is mounted to a pin of a second semiconductor chip on which the controlling section is mounted. | 08-18-2011 |
20110200146 | RECEIVING DEVICE, RECEIVING METHOD, AND PROGRAM - Disclosed herein is a receiving device, including a receiving section configured to receive only a partial segment among a plurality of segments obtained by dividing a frequency band of one physical channel when the receiving device is in a waiting state, and return from the waiting state to an activated state when warning information is transmitted, if transmission of the warning information by the partial segment is possible. | 08-18-2011 |
20110280381 | RECEIVING APPARATUS, ANNOUNCEMENT CONTROL METHOD, AND PROGRAM - Disclosed herein is a receiving apparatus including: a receiving portion configured to receive warning information; a setting portion configured to establish settings regarding an announcing action to be performed upon receipt of the warning information, in accordance with operations performed by a user; and a control portion configured to control, upon receipt of the warning information, the announcing action in accordance with the settings established by the setting portion. | 11-17-2011 |
20120250802 | RECEIVER, RECEPTION METHOD, PROGRAM AND RECEPTION SYSTEM - Disclosed herein is a receiver including a determination block adapted to determine, as a gain used to adjust the power of a received signal received with a fixed bandwidth, a gain different from that used when other band is not contained in a band of the received signal if the band of the received signal contains a desired signal band and the other band. | 10-04-2012 |
20130170570 | TRANSMISSION DEVICE AND TRANSMISSION METHOD THEREOF, AND RECEPTION DEVICE - The present invention relates to a transmission device that enables transmission and reception of connected transmission channels in a 13-segment format and a transmission method of the transmission device, and to a reception device. | 07-04-2013 |
20130177101 | TRANSMISSION DEVICE AND TRANSMISSION METHOD THEREOF, AND RECEPTION DEVICE - The present invention relates to a transmission device that enables transmission and reception of connected transmission channels in a 13-segment format and a transmission method of the transmission device, and to a reception device. | 07-11-2013 |
20130336433 | RECEIVING APPARATUS, RECEIVING METHOD, AND PROGRAM - Disclosed are a receiving apparatus, a receiving method, and a program capable of reliably obtaining predetermined information. In a case where a broadband signal where the same control information is arranged in different frequency bands is received and processed, a frequency where the control information is stably received is detected, and the control information is obtained again using the detected frequency. This frequency detection is performed by detecting a frequency capable of avoiding a no-signal band in a signal array of the broadband signal determined based on the obtained control information and the like. This technology can be applied to a receiving apparatus that receives a signal conforming to a DVB-C2 standard. | 12-19-2013 |
20140295908 | TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, RECEPTION METHOD, AND PROGRAM - The present technique relates to a transmission device, a transmission method, a reception device, a reception method, and a program capable of reducing interference to an adjacent channel in a case where connected-transmission is performed. A transmission device according to an aspect of the present technique includes a signal generating unit configured to generate a plurality of signals having a predetermined frequency bandwidth, a power adjusting unit configured to adjust power of signals so that the power of a signal transmitted using a frequency band close to an end of a channel is less than the power of the signal transmitted using a frequency band close to a center of the channel, and a transmission unit configured to use the channel to transmit, in a connected manner, the signals of which powers have been adjusted. The present technique can be applied to a transmission device for performing connected-transmission. | 10-02-2014 |