Patent application number | Description | Published |
20080198953 | Decoding Method and Decoding Apparatus - Disclosed herein is a decoding method of performing maximum a posteriori probability (MAP) decoding of selecting one decoded word from one or more decoded word candidates obtained by subjecting a linear code to iterative decoding by comparison of distances between a reception word and each decoded word candidate. A decoded word candidate in which a known value in a part of a transmission word has been changed to another value is excluded from the one or more decoded word candidates. | 08-21-2008 |
20080270876 | Decoding Apparatus, Decoding Method, and Decoding Program - A decoding apparatus includes a memory and a receiving unit and is adapted to decode data in units of codewords each including a parity part. The memory has a storage capacity capable of storing at least data with a length equal to the length of one codeword. The receiving unit receives, as received values, elements of a codeword in a bit-interleaved form, performs bit deinterleaving and parity permutating on the received values, and stores the resultant received values in the memory. | 10-30-2008 |
20090106620 | DECODING APPARATUS, DECODING METHOD AND PROGRAM - Disclosed herein is a decoding apparatus for decoding an LDPC code, the decoding apparatus including: a message computation section configured to carry out a process of decoding received values, where notation F denotes a non-unity measure of the integer P, and outputting F messages; a shift section configured to carry out F×F cyclic shift operations on the F messages and output F messages; a storage section configured to store the F messages and allow the stored F messages to be read out or to store F received values cited above and allow the stored F received values to be read out; and a control section configured to control an operation to supply a unit composed of the F received values to the message computation section by carrying out at least a column rearrangement process or a process equivalent to the column rearrangement process on the received values. | 04-23-2009 |
20090106621 | DATA DECODING APPARATUS, DATA DECODING METHOD, DATA TRANSMITTING/RECEIVING SYSTEM, DATA RECEIVING APPARATUS, DATA RECEIVING METHOD AND PROGRAM - Disclosed herein is a decoding apparatus for decoding an LDPC (Low Density Parity Check) code received in a first format or a second format wherein a process to decode received values each obtained as a result of receiving the LDPC code in the first or second format includes at least F check-node processes carried out concurrently as processes of F check nodes respectively or F variable-node processes carried out concurrently as processes of F variable nodes respectively. | 04-23-2009 |
20090106622 | RECEIVING APPARATUS AND METHOD AND PROGRAM - A receiving apparatus including, an LDPC decoder configured to decode both of the data signal and the transmission control signal, a data signal input buffer arranged before the LDPC decoder and configured to hold the received data signal and a transmission control signal input buffer arranged before the LDPC decoder and configured to hold the received transmission control signal, and a controller configured to select one of the data signal held in the data signal input buffer and the transmission control signal held in the transmission control signal input buffer as a signal subject to decoding and transmit the selected signal to the LDPC decoder to make the LDPC decoder decode the signal subject to decoding. | 04-23-2009 |
20090135931 | RECEPTION APPARATUS, RECEPTION METHOD AND PROGRAM - Disclosed herein is a reception apparatus, including, an orthogonal frequency division multiplexing signal reception section, a first filter section, a subtraction section, a second filter section, a coefficient production section, and a Fast Fourier Transformation mathematic operation section. | 05-28-2009 |
20090158127 | DECODING APPARATUS AND DECODING METHOD - Disclosed herein is a decoding apparatus that performs soft-decision decoding on a linear block code, the apparatus including a hard-decision decoder configured to perform hard-decision decoding on a received word using a hard-decision decoding algorithm; and a soft-decision decoder configured to perform, using a soft-decision algorithm, soft-decision decoding merely on a received word for which the hard-decision decoder has failed in the hard-decision decoding. | 06-18-2009 |
20090158128 | DECODING DEVICE, DECODING METHOD, RECEIVING DEVICE, AND STORAGE MEDIUM REPRODUCING DEVICE - A decoding device for a linear code on a ring R, the decoding device including: a plurality of storage media; and a processing section; wherein the processing section uses a part of reliability of all symbols at a previous time to update reliability of each symbol in a process of iterative decoding for increasing the reliability of each symbol, and further retains a part used to update retained reliability information and a part unused to update the retained reliability information on two separate storage media. | 06-18-2009 |
20090190695 | DECODING DEVICE AND METHOD, RECEIVING DEVICE AND METHOD, AND PROGRAM - Disclosed herein is a decoding device that decodes demodulated data obtained by demodulating a quadrature modulated signal arising from digital modulation of a carrier and detects synchronization, the decoding device including, a decoder configured to decode first demodulated data that is the demodulated data obtained by demodulating the quadrature modulated signal and is composed of in-phase axis data and quadrature axis data, and decode second demodulated data obtained by interchanging the in-phase axis data and the quadrature axis data of the first demodulated data, and a synchronization detector configured to detect a boundary between predetermined information symbol sequences from first decoded data obtained by decoding the first demodulated data and detect the boundary from second decoded data obtained by decoding the second demodulated data, the synchronization detector selecting and outputting one of the first decoded data and the second decoded data based on a result of the detection of the boundary. | 07-30-2009 |
20090217122 | Coding Apparatus and Coding Method - The present invention relates to a coding apparatus and a coding method by which the circuit scale can be reduced without changing the operation speed in coding of a linear code. An adder | 08-27-2009 |
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 |
20090231994 | DEMODULATING CIRCUIT, DEMODULATING METHOD, PROGRAM, AND RECEIVING DEVICE - Disclosed herein is A demodulating circuit including: an FFT processing section; an intercarrier interferential component removing section; an extracting section; a transmission path characteristics estimating section; an interpolating section; a symbol sequence estimating section; and an interference replica generating section. | 09-17-2009 |
20090304111 | Decoding Device and Method - A decoding device and method for decoding an LDPC code with high accuracy while suppressing an increase of the scale of a device. A check node calculator ( | 12-10-2009 |
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 |
20100080316 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, DISPLAY APPARATUS AND INFORMATION PROCESSING PROGRAM - Disclosed herein is an information processing apparatus including: a demodulation FFT processing section configured to carry out an FFT process on a demodulation-related signal extracted by making use of a demodulation FFT window from every symbol of a received OFDM signal and output the frequency-domain signal; a control FFT processing section configured to carry out a process equivalent to an FFT process on a control-related signal extracted by making use of a control FFT window from every symbol of the received OFDM signal and output the frequency-domain signal; a transmission-line information estimation section; an equalization section; a reception-quality computation/comparison section; and an FFT-window position control section configured to control the demodulation FFT window to be used by the demodulation FFT processing section and the control FFT window to be used by the control FFT processing section on the basis of a comparison result produced by the reception-quality computation/comparison section. | 04-01-2010 |
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 |
20100080330 | RECEIVING APPARATUS, RECEIVING METHOD, AND PROGRAM - Disclosed herein is a receiving apparatus including: first to third position determination sections configured to determine the start position of an FFT interval which serves as a signal interval targeted for FFT by an FFT section; a selection section configured to select one of those start positions of the FFT interval which are determined by the first through the third position determination section; and the FFT section configured to perform FFT on the OFDM time domain signal by regarding the start position selected by the selection section as the start position of the FFT interval in order to generate the first OFDM frequency domain signal. | 04-01-2010 |
20100135335 | FRAME SYNCHRONIZER, FRAME SYNCHRONIZATION METHOD AND DEMODULATOR - The present invention relates to a frame synchronizer, frame synchronization method and demodulator which can more positively establish frame synchronization of an input signal which is likely to have a plurality of frame lengths. | 06-03-2010 |
20100245677 | RECEIVING APPARATUS, RECEIVING METHOD, PROGRAM, AND RECEIVING SYSTEM - A receiving apparatus includes: a deinterleaving device configured to perform a deinterleaving process on an LDPC-coded data signal having undergone an interleaving process, the LDPC representing Low Density Parity Check, by use of a memory which has columns capable of storing as many as “a” data, the “a” being an integer of at least 1; and a control device configured such that if the data signal is supplied in units of N data, the N being an integer smaller than the “a,” the control device controls the deinterleaving device to write the data signal to a predetermined address of the memory while reading previously written data from the predetermined address in a write period, the control device further controlling the deinterleaving device to stop writing the data signal to the predetermined address of the memory while reading the previously written data from the predetermined address in a write inhibit period. | 09-30-2010 |
20100251078 | RECEIVING APPARATUS, RECEIVING METHOD, PROGRAM, AND RECEIVING SYSTEM - A receiving apparatus includes: an LDPC decoding device configured such that when an LDPC-coded data signal, LDPC representing Low Density Parity Check, and an LDPC-coded transmission control signal are transmitted in multiplexed fashion, the LDPC decoding device can decode both the data signal and the transmission control signal; a holding device configured to be located upstream of the LDPC decoding device and to hold at least the transmission control signal upon receipt of the data signal and the transmission control signal; and a control device configured to control the LDPC decoding device to decode the data signal while the transmission control signal is being accumulated in the holding device and to interrupt the current decoding so as to control the LDPC decoding device to decode the transmission control signal when the transmission control signal has been accumulated in the holding device. | 09-30-2010 |
20100269019 | DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD - The present invention relates to a data processing apparatus and a data processing method which can improve the tolerance to errors of data. A demultiplexer | 10-21-2010 |
20100275100 | DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD AS WELL AS ENCODING APPARATUS AND ENCODING METHOD - A data processing apparatus, a data processing method, an encoding apparatus, and an encoding method which can be applied, for example, to a transmission system for transmitting an LDPC code and so forth, and which can improve tolerance to errors. Of an LDPC code which is prescribed in the DVB-S.2 and has a code length of 64,800 and an encoding rate of 2/3, mb code bits are replaced, and the code bits after the replacement become symbol bits of b symbols. When m is 8 and b is 2, where the i+1th bit from the most significant bit of 8×2 code bits and 8×2 symbol bits of two successive symbols are represented by b | 10-28-2010 |
20100275101 | DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD - The present invention relates to a data processing apparatus and a data processing method which can improve the tolerance to errors of data. A demultiplexer replaces, in accordance with an allocation rule for allocating code bits of an LDPC code to symbol bits representative of symbols, mb bits from among the code bits and sets the code bits after the replacement as symbol bits of b symbols. According to the allocation rule, where groups into which the code bits and the symbol bits are to be grouped in response to an error probability thereof are set as code bit groups and symbol bit groups, respectively, a combination of any of the code bit groups and the symbol bit group of the symbol bits to which the code bits of the code bit group are to be allocated and bit numbers of the code bits and the symbols bits are prescribed. | 10-28-2010 |
20100281329 | DATA PROCESSING APPARATUS, DATA PROCESSING METHOD AND PROGRAM - The present invention relates to a data processing apparatus, a data processing method and a program which can improve the tolerance of code bits of an LDPC code to errors. | 11-04-2010 |
20100299572 | DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD AS WELL AS ENCODING APPARATUS AND ENCODING METHOD - A data processing apparatus, a data processing method, an encoding apparatus and an encoding method which can be applied, for example, to a transmission system for transmitting an LDPC code and so forth, and which can improve the tolerance to errors. Of an LDPC code which is prescribed in the DVB-S.2 and has a code length of 64,800 and an encoding rate of ⅔, mb code bits are replaced, and the code bits after the replacement become symbol bits of b symbols. When m is 8 and b is 2, where the i+1th bit from the most significant bit of 8×2 code bits and 8×2 symbol bits of two successive symbols are represented by b | 11-25-2010 |
20100306627 | RECEIVING APPARATUS, RECEIVING METHOD, PROGRAM, AND RECEIVING SYSTEM - Disclosed herein is a receiving apparatus including a reception device configured to receive a code sequence coded in LDPC (Low Density Parity Check) and punctured at least partially as a target to be decoded; and an LDPC decoding device configured to perform a punctured matrix transform process including a first and a second process on an original parity check matrix noted to have punctured bits or symbols and used in the LDPC coding. The LDPC decoding device further performs the first process to carry out Galois field addition operations on those rows of the original parity check matrix to set the non-zero elements to zero. The LDPC decoding device further performs the second process to delete the columns rid of the non-zero elements. The LDPC decoding device uses the matrix resulting from the process as the parity check matrix for performing an LDPC decoding process on the code sequence. | 12-02-2010 |
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 |
20100325512 | DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD - The present invention relates to a data processing apparatus and a data processing method which can improve the tolerance to errors of code bits of an LDPC code such as burst errors or erasure. | 12-23-2010 |
20110037904 | RECEIVING APPARATUS AND METHOD, PROGRAM, AND RECEIVING SYSTEM - Disclosing herein is a receiving apparatus including, a buffer configured to store packets of a first packet sequence made up of packets extracted from one transport stream that are common to packets of another transport stream and packets of a second packet sequence made up of common packets, a read control section configured to read the packets of the first packet sequence and the second packet sequence stored in the buffer after the passing of a predetermined time after synchronization is established between the packets of the first packet sequence and the packets of the second packet sequence, thereby reconstructing one transport stream from the first packet sequence and the second packet sequence, and an output section configured to output the reconstructed transport stream. | 02-17-2011 |
20110038385 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND RECEPTION SYSTEM - Disclosed herein is a signal processing apparatus including a first detection block; a second detection block; a duration detection block; a duration information output block; and a demodulation block. | 02-17-2011 |
20110099453 | RECEIVING APPARATUS, RECEIVING METHOD, COMPUTER PROGRAM, AND RECEIVING SYSTEM - A receiving apparatus includes: a first decoding means for performing, every time frame data in which an inner code and an outer code are used as error correction codes is transmitted thereto, decoding processing employing the inner code and outputting decoded data; a storing means for storing the decoded data; a second decoding means for applying decoding processing employing the outer code to the decoded data; and a control means for controlling storage and output of the decoded data in and from the storing means to suspend, while the control means causes the storing means to output first decoded data as the decoded data of a decoding result of first frame data to the second decoding means, when the first decoding means starts output of second decoded data as the decoded data of a decoding result of second frame data following the first frame data, the output of the first decoded data to the second decoding means and cause the storing means to store the second decoded data and, when the storage of the second decoded data ends, cause the storing means to resume the output of the first decoded data to the second decoding means. | 04-28-2011 |
20110142098 | RECEPTION APPARATUS, RECEPTION METHOD, RECEPTION PROGRAM, AND RECEPTION SYSTEM - Disclosed herein is a reception apparatus including: a spectrum inversion detection section configured to detect the occurrence or absence of spectrum inversion in a received signal complying with the Digital Video Broadcasting-Terrestrial 2 standard known as DVB-T2, using a P1 signal constituting the received signal; a spectrum inversion section configured to perform a spectrum inversion process on the received signal if the occurrence of the spectrum inversion is detected at least by the spectrum inversion detection section; and a demodulation section configured to demodulate the received signal having undergone the spectrum inversion process if the occurrence of the spectrum inversion is detected by the spectrum inversion detection section, the demodulation section further demodulating the received signal yet to undergo the spectrum inversion process if the absence of the spectrum inversion is detected by the spectrum inversion detection section. | 06-16-2011 |
20110142176 | RECIEVING APPARATUS AND METHOD, PROGRAM, AND RECIEVING SYSTEM - Disclosed herein is a receiving apparatus for receiving an orthogonal frequency division multiplexing signal, namely, OFDM signal having a frame having one frame length of a plurality of patterns, including: an acquiring section configured to acquire information on a preamble signal from the OFDM signal transmitted from a transmitting apparatus in accordance with an OFDM system; a frame determining section configured to determine whether or not the one frame length is short in the frame based on the information on the preamble signal acquired from the acquiring section; and a time interpolating section configured to obtain transmission path characteristics by comparing a pilot contained in the preamble signal and a known pilot corresponding to the pilot in a phase of transmission with each other when the frame determining section determines that the one frame length is short in the frame, and interpolate a data portion in a time direction based on the transmission path characteristics thus obtained. | 06-16-2011 |
20110158354 | RECEIVER, RECEIVING METHOD, PROGRAM AND RECEIVING SYSTEM - Disclosed herein is a receiver including a receiving section, a first sorting section, a second sorting section, and a switching section. | 06-30-2011 |
20110164628 | RECEPTION APPARATUS AND METHOD, PROGRAM AND RECEPTION SYSTEM - Disclosed herein is a reception apparatus, including: a reception section configured to receive an OFDM (orthogonal frequency division multiplexed) signal obtained by modulating a common packet sequence configured from a packet common to a plurality of streams and a data packet sequence configured from packets individually unique to the plural streams; a buffer configured to accumulate packets of the common packet sequence and the data packet sequence obtained by demodulating the received OFDM signal; a retaining section configured to retain correction information for correcting out-of-synchronism between the common packet sequence and the data packet sequence obtained from particular packets of the common packet sequence and the data packet sequence upon reading out of the packets accumulated in the buffer; and a correction section configured to correct the out-of-synchronism of the packet which suffers from the out-of-synchronism of the packets based on the correction information retained in the retaining section. | 07-07-2011 |
20110164703 | RECEPTION APPARATUS AND METHOD, PROGRAM AND RECEPTION SYSTEM - Disclosed herein is a reception apparatus, including: a reception section configured to receive an OFDM (Orthogonal Frequency Division Multiplexed) signal obtained by modulating a common packet sequence configured from a packet common to streams and a data packet sequence configured from packets individually unique to the streams; a time counting section configured to count, using predetermined time indicated by additional information added to particular packets of the common and data packet sequences obtained by demodulating the received OFDM signal as a reference, elapsed time after the predetermined time; a detection section configured to compare the counted time and time indicated by the additional information added to the particular packets of the common and data packet sequences to detect a displacement in the time direction between the packets; and a correction section configured to correct the displacement between the packets of the common and data packet sequences in the time direction. | 07-07-2011 |
20110164706 | RECEPTION APPARATUS AND METHOD, PROGRAM AND RECEPTION SYSTEM - Disclosed herein is a reception apparatus, including: a reception section adapted to receive an OFDM (Orthogonal Frequency Division Multiplexing) signal obtained by modulating a first frame configured so as to include packets of a common packet sequence configured from a packet common to a plurality of streams and a second frame configured so as to include packets of a data packet sequence configured from packets individually unique to the plural streams; an acquisition section adapted to acquire specification information for specifying a combination of a first frame and a second frame obtained by demodulating the received OFDM signal; and a detection section adapted to detect a combination of a packet of the common packet sequence which configures the first frame and a packet of the data packet sequence which configures the second frame, whose combination is specified based on the acquired specification information. | 07-07-2011 |
20110191650 | Cyclic Shift Device, Cyclic Shift Method, LDPC Decoding Device, Television Receiver, and Reception System - The present invention relates to a cyclic shift device, a cyclic shift method, an LDPC decoding device, a television receiver, and a reception system, whereby reduction in size of a device can be realized. | 08-04-2011 |
20110317790 | RECEIVING APPARATUS, RECEIVING METHOD, AND RECEIVING SYSTEM - A receiving apparatus includes: a transmission path characteristics estimating section obtaining pre-interpolation transmission path characteristic data as estimate values for transmission path characteristics as characteristics of a transmission path of an OFDM signal for transmission symbols of pilot signals by using the pilot signals contained in the OFDM signal, and filtering the pre-interpolation transmission path characteristic data by using an interpolation filter, thereby obtaining transmission path characteristic data as estimate values for transmission path characteristics for transmission symbols of the OFDM signal; a distortion correcting section performing distortion correction for the OFDM signal by using the transmission path characteristic data; and a filter controlling section controlling a pass band of the interpolation filter. | 12-29-2011 |
20120106608 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM - A signal processing apparatus is disclosed which includes: a detection section configured such that based on a result of the error correction of a signal generated by a single carrier system, the detection section detects the presence or absence of spectrum inversion in the signal; and a selection section configured such that if the detection section detects the spectrum inversion, the selection section selects the spectrally inverted signal as the signal subject to the error correction, and that if the detection section does not detect the spectrum inversion, then the selection selects the spectrally uninverted signal as the signal subject to the error correction. | 05-03-2012 |
20120110407 | DECODING DEVICE AND METHOD, AND PROGRAM - Disclosed herein is a decoding device including: an extracting section, a storing section, an allocating section, and a decoding section. The extracting section acquires data containing plural code words and information other than the plural code words in one frame, and extracts the plural code words from the data every one code word. The storing section at least stores the one code word extracted by the extracting section. The allocating section sets time obtained by dividing time for the one frame by the number of code words contained in the one frame as time allocated to decoding of one code word. The decoding section decodes the code word within the time allocated by the allocating section. | 05-03-2012 |
20120110415 | DECODING APPARATUS, METHOD, AND PROGRAM - The present disclosure provides a decoding apparatus including, a storage section configured to store a reception value, a detection section configured to detect an error in the reception value, an error correction section configured to correct an error detected by the detection section with respect to the reception value, and a control section configured to control reading of the reception value from the storage section, wherein the control section controls first reading such that the reception value is read into the detection section and, after detection of an error by the detection section, second reading such that substantially the same reception value as that in the first reading is read into the error correction section. | 05-03-2012 |
20120320994 | ENCODER AND ENCODING METHOD PROVIDING INCREMENTAL REDUNDANCY - The present invention relates to an encoder for error correction code encoding input data words (D) into codewords (Z | 12-20-2012 |
20130246883 | DATA PROCESSING DEVICE AND DATA PROCESSING METHOD - A data processing device and a data processing method that can readily process control data having its PAPR improved. In a transmission device, a padder pads control data necessary for demodulation with zeros as dummy data, and a scrambler scrambles the padded control data (post-padding control data). A replacement unit replaces scrambled dummy data in the scrambled post-padding control data with the dummy data, and a BCH encoder and an LDPC encoder perform BCH encoding and LDPC encoding as error correction encoding on the replacement data obtained through the replacement. A shortening unit performs shortening by deleting the dummy data contained in the LDPC code and puncturing the parity bits of the LDPC code. The device can be applied in cases where control data is subjected to error correction encoding and is then transmitted, for example. | 09-19-2013 |
20130254617 | DATA PROCESSING DEVICE AND DATA PROCESSING METHOD - The present invention relates to a data processing device and a data processing method capable of improving the resistance to error of data. An LDPC encoder | 09-26-2013 |
20130311850 | DATA PROCESSING DEVICE AND DATA PROCESSING METHOD - A data processing device and a data processing method capable of improving resistance to errors. Code bits of an LDPC code with a code length N of 16200 bits is written to, for example, eight storage units. When the code bits are stored in the storage units, a process of changing the storage start position of the code bits for each storage unit is performed as a sorting process of sorting the bits of the LDPC code such that a plurality of code bits corresponding to 1s in an arbitrary row of the parity check matrix of the LDPC code are not included in a single symbol which is read from the storage units. The present technology can be applied to, for example, the transmission of the LDPC code. | 11-21-2013 |
20130315351 | RECEPTION DEVICE, RECEPTION METHOD, AND PROGRAM - The present technology relates to a reception device, a reception method, and a program therefor that enable improvement in reception performance when information on a frequency band in which no data is transmitted is known. The reception device receives a broadcast wave of an OFDM signal transmitted from a transmission device at a broadcast station that is not shown. A transmission parameter interpretation unit acquires band information indicating a “no signal” band contained in transmitted control information. An interference rejection filter unit performs filtering at least when a signal with a level higher than a predetermined level is detected on the basis of the band information from the transmission parameter interpretation unit. The disclosed technology can be applied to a reception device that receives OFDM signals, for example. | 11-28-2013 |
20130321707 | TRANSMITTER APPARATUS, INFORMATION PROCESSING METHOD, PROGRAM, AND TRANSMITTER SYSTEM - The present technology relates to a transmitter apparatus, an information processing method, a program, and a transmitter system capable of easily transmitting a wideband signal. | 12-05-2013 |
20130329775 | RECEIVING DEVICE, RECEIVING METHOD, AND PROGRAM - The present technique relates to a receiving device, a receiving method, and a program for realizing a prompt start of data demodulation. A receiving device of one aspect of the present technique includes: a detecting unit that detects a first preamble signal from a frame signal having a frame structure that contains the first preamble signal indicating a frame partition, a second preamble signal containing control information to be used in processing a data signal, and the data signal, the second preamble signal being transmitted after the first preamble signal; an accumulating unit that accumulates the second preamble signal when the first preamble signal is detected; and a processing unit that processes the data signal based on the control information contained in the second preamble signal accumulated in the accumulating unit, the data signal being contained in the same frame as the second preamble signal accumulated in the accumulating unit. The present technique can be applied to a receiving device that receives data transmitted by an OFDM method such as DVB-T2. | 12-12-2013 |
20130342764 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND PROGRAM - The present technology relates to a signal processing device, a signal processing method, and a program capable of appropriately demodulating a desired signal from a multiplexed signal obtained by multiplexing a plurality of signals. A preamble signal is detected from a multiplexed signal obtained by multiplexing a plurality of signals. When information for discriminating each of the signals that is contained in the preamble signal indicates a first signal, demodulation by a demodulator is continued and the first signal is demodulated. When information for discriminating each of the signals that is contained in the preamble signal indicates a second signal, demodulation is not performed by stopping the demodulation by the demodulator. The present technology can be applied to a signal processing device that processes signals for digital broadcasting. | 12-26-2013 |
20140003540 | DATA READOUT DEVICE, DATA READOUT METHOD, AND PROGRAM | 01-02-2014 |
20140009684 | RECEIVING DEVICE, RECEIVING METHOD, PROGRAM, AND RECEIVING SYSTEM - This technique relates to a receiving device, a receiving method, a program, and a receiving system that are designed to reduce circuit size. A receiving device of one aspect of this technique includes: a de-mapping unit that receives a symbol signal generated by performing mapping on a first branch signal and a second branch signal indicating information about the same transmission target, and performs de-mapping on the symbol signal by a hard decision; a selecting unit that selects, in accordance with a reception state, one signal from the first branch signal and the second branch signal obtained through the de-mapping; and a decoding unit that decodes the information about the transmission target based on the one signal. This technique can be applied to receivers that receive OFDM signals compliant with DVB-C2. | 01-09-2014 |
20140016728 | RECEPTION APPARATUS, RECEPTION METHOD, PROGRAM, AND RECEPTION SYSTEM - The present technique relates to a reception apparatus, a reception method, a program, and a reception system capable of starting decoding of data in a short time. A reception apparatus according to an aspect of the present technique includes a demodulation unit configured to demodulate a modulated signal used to transmit transmission control information about data and the data to be transmitted, a first decoding unit configured to decode the transmission control information obtained by demodulation performed with the demodulation unit, a storage unit configured to store the data obtained by demodulation performed with the demodulation unit, and a second decoding unit configured to decode the data stored in the storage unit on the basis of the transmission control information decoded by the first decoding unit. The present technique can be applied to a receiver receiving an OFDM signal of DVB-C2. | 01-16-2014 |
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 |
20150085910 | RECEPTION DEVICE, RECEPTION METHOD, AND PROGRAM - There is provided a reception device including a reception unit configured to receive an OFDM (Orthogonal Frequency Division Multiplexing) signal, an acquisition unit configured to acquire a transmission parameter concerning the OFDM signal contained in the OFDM signal, and a selection unit configured to select a demodulation mode of the OFDM signal in accordance with the acquired transmission parameter. | 03-26-2015 |