公开(公告)号：US08503583B2

公开(公告)日：2013-08-06

申请号：US12953832

申请日：2010-11-24

申请人： Takashi Yokokawa ,  Osamu Shinya ,  Hitoshi Sakai

发明人： Takashi Yokokawa ,  Osamu Shinya ,  Hitoshi Sakai

IPC分类号： H04L27/06

CPC分类号： H04L5/0007 ,  H04L1/0052 ,  H04L1/0071

摘要： A receiver that receives an Orthogonal Frequency Division Multiplexing (OFDM) signal obtained by modulating a common packet sequence and data packet sequence. The common packet sequence is made up of packets common to a plurality of streams. The data packet sequence is made up of packets specific to one of the plurality of streams. The receiver sorts the common packet sequence, obtained by demodulating the received OFDM signal, in the time domain, and sorts the data packet sequence, obtained by demodulating the received OFDM signal, in the time domain. The receiver then switches the output for error correction from the one sorting over to the other sorting if, while the one sorting supplies its output to the error correction, the other sorting completes its input of a predetermined unit of information to be processed.

摘要翻译： 接收器，其接收通过调制公共分组序列和数据分组序列而获得的正交频分复用（OFDM）信号。 公共分组序列由多个流公共的分组组成。 数据分组序列由特定于多个流之一的分组组成。 接收机对在时域中对接收到的OFDM信号进行解调而获得的公共分组序列进行排序，并对在时域中对接收到的OFDM信号进行解调而获得的数据分组序列进行分类。 然后，如果在一个排序将其输出提供给纠错的情况下，接收器将用于纠错的输出从一个排序切换到另一个分类，则另一排序完成其要处理的预定信息单元的输入。

公开(公告)号：US20110317790A1

公开(公告)日：2011-12-29

申请号：US13165230

申请日：2011-06-21

申请人： Takashi Yokokawa ,  Hitoshi Sakai ,  Taylor Matthew

发明人： Takashi Yokokawa ,  Hitoshi Sakai ,  Taylor Matthew

IPC分类号： H04L27/06 ,  H04B1/10

CPC分类号： H04L25/0232 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2647

摘要： 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.

摘要翻译： 接收装置包括：传输路径特性估计部分，通过使用包含在导频信号中的导频信号，获得插值前传输路径特性数据作为传输路径特性的估计值，作为用于导频信号的传输符号的OFDM信号的传输路径的特性 OFDM信号，并且通过使用内插滤波器对插值前传输路径特征数据进行滤波，从而获得作为OFDM信号的发送符号的传输路径特性的估计值的传输路径特性数据; 失真校正部通过使用所述传输路径特性数据对所述OFDM信号进行失真校正; 以及控制内插滤波器的通带的滤波器控制部。

公开(公告)号：US20120110415A1

公开(公告)日：2012-05-03

申请号：US13238397

申请日：2011-09-21

申请人： Takashi Yokokawa ,  Osamu Shinya ,  Yutaka Nakada ,  Ryoji Ikegaya

发明人： Takashi Yokokawa ,  Osamu Shinya ,  Yutaka Nakada ,  Ryoji Ikegaya

IPC分类号： G11C29/42 ,  G06F11/10

CPC分类号： H03M13/152 ,  H03M13/65 ,  H03M13/6502

摘要： 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.

摘要翻译： 本公开提供了一种解码装置，包括：存储部，被配置为存储接收值;检测部，被配置为检测接收值中的误差;纠错部，被配置为校正由所述检测部检测到的相对于 接收值，以及控制部，其被配置为控制从所述存储部读取接收值，其中，所述控制部控制第一读取，使得所述接收值被读入所述检测部，并且在检测部检测到错误之后， 第二读取使得与第一读取中基本上相同的接收值被读入错误校正部分。

公开(公告)号：US20090217121A1

公开(公告)日：2009-08-27

申请号：US11912481

申请日：2006-04-20

申请人： Takashi Yokokawa ,  Toshiyuki Miyauchi ,  Osamu Shinya

发明人： Takashi Yokokawa ,  Toshiyuki Miyauchi ,  Osamu Shinya

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/1168 ,  H03M13/1114 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/6505 ,  H03M13/6566

摘要： The present invention relates to a decoding apparatus and a decoding method, which are capable of decoding LDPC codes with a high degree of precision while preventing the circuit scale of the decoding apparatus from increasing. A computation section 1102 carries out a first computation process corresponding to three check-node processes by making use of decoding intermediate results D1101 supplied from a decoding intermediate result storage memory 1104 by way of a cyclic shift circuit 1101, and stores the result of the first computation process in a decoding intermediate result storage memory 1103. A computation section 415 carries out a second computation process corresponding to six variable-node processes by making use of decoding intermediate results D414 supplied from a decoding intermediate result storage memory 1103 by way of a cyclic shift circuit, and stores the decoding intermediate result D415 in the decoding intermediate result storage memory 1104. The present invention can be applied to, for example, a tuner for receiving (digital) satellite broadcasts.

摘要翻译： 解码装置和解码方法技术领域本发明涉及一种能够在防止解码装置的电路规模增大的同时高精度地解码LDPC码的解码装置和解码方法。 计算部分1102通过利用通过循环移位电路1101从解码中间结果存储存储器1104提供的解码中间结果D1101来执行与三个校验节点处理相对应的第一计算处理，并且存储第一 在解码中间结果存储存储器1103中的计算处理。计算部415通过利用从解码中间结果存储存储器1103提供的解码中间结果D414通过循环的方式执行与六个可变节点处理相对应的第二计算处理 并将解码中间结果D415存储在解码中间结果存储存储器1104中。本发明可以应用于例如用于接收（数字）卫星广播的调谐器。

公开(公告)号：US20140016728A1

公开(公告)日：2014-01-16

申请号：US14006799

申请日：2012-03-23

申请人： Takashi Yokokawa ,  Naoki Yoshimochi ,  Hitoshi Sakai

发明人： Takashi Yokokawa ,  Naoki Yoshimochi ,  Hitoshi Sakai

IPC分类号： H04L27/26

CPC分类号： H04L27/2649 ,  H04N21/4263

摘要： 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.

摘要翻译： 本技术涉及能够在短时间内开始数据解码的接收装置，接收方法，程序和接收系统。 根据本技术的一个方面的接收装置包括解调单元，被配置为对用于发送关于数据的发送控制信息和要发送的数据的调制信号进行解调;第一解码单元，被配置为对通过解调获得的发送控制信息进行解码 用解调单元执行的存储单元，存储单元，被配置为存储通过用解调单元执行的解调获得的数据;以及第二解码单元，被配置为基于由第一个解码单元解码的传输控制信息来解码存储在存储单元中的数据 解码单元。 本技术可以应用于接收DVB-C2的OFDM信号的接收机。

公开(公告)号：US08488695B2

公开(公告)日：2013-07-16

申请号：US12958912

申请日：2010-12-02

申请人： Takashi Yokokawa ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

发明人： Takashi Yokokawa ,  Tadaaki Yuba ,  Hidetoshi Kawauchi ,  Hitoshi Sakai ,  Yuken Goto ,  Suguru Houchi

IPC分类号： H04K1/10

CPC分类号： H04L25/02 ,  H04L25/0232 ,  H04L2025/03414

摘要： A receiving apparatus for receiving an orthogonal frequency division multiplexing (OFDM) signal including a frame having one frame length of a plurality of patterns. The apparatus comprises an acquiring section to acquire information regarding a preamble signal from an OFDM signal from a transmitting apparatus; a frame determining section to determine whether the one frame length is short in the frame based on the information regarding the acquired preamble signal; and a time interpolating section to obtain transmission path characteristics by comparing a pilot contained in the preamble signal with a known pilot corresponding to the pilot in a phase of transmission, when the frame determining section determines that the one frame length is short in the frame, and to interpolate a data portion in a time direction based on transmission path characteristics.

摘要翻译： 一种用于接收正交频分多路复用（OFDM）信号的接收装置，包括具有多个模式的一帧长度的帧。 该装置包括：获取部分，从发送装置获取来自OFDM信号的关于前导码信号的信息; 帧确定部分，用于基于关于所获取的前导信号的信息来确定帧中的一个帧长度是否短; 以及时间内插部分，当帧确定部分确定帧中的一个帧长度短时，通过将包含在前导码信号中的导频与对应于传输的相位中的导频的已知导频进行比较来获得传输路径特性， 并且基于传输路径特性在时间方向上内插数据部分。

公开(公告)号：US09172497B2

公开(公告)日：2015-10-27

申请号：US13885557

申请日：2011-11-14

申请人： Osamu Shinya ,  Takashi Yokokawa ,  Lachlan Bruce Michael

发明人： Osamu Shinya ,  Takashi Yokokawa ,  Lachlan Bruce Michael

IPC分类号： H04L1/00 ,  H03M13/11 ,  H03M13/15 ,  H03M13/25 ,  H03M13/00

CPC分类号： H04L1/004 ,  H03M13/1102 ,  H03M13/152 ,  H03M13/253 ,  H03M13/255 ,  H03M13/618 ,  H03M13/6362 ,  H03M13/6552 ,  H04L1/0043 ,  H04L1/0052 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0072

摘要： 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.

摘要翻译： 能够容易地处理其PAPR的控制数据的数据处理装置和数据处理方法。 在传输装置中，焊盘将用于以零作为解调的解调所需的数据作为伪数据，并且扰频器对填充的控制数据进行加扰（后置填充控制数据）。 替换单元用伪数据替换加密的后置填充控制数据中的加密伪数据，并且BCH编码器和LDPC编码器对通过替换获得的替换数据执行BCH编码和LDPC编码作为纠错编码。 缩短单元通过删除包含在LDPC码中的伪数据并对该LDPC码的奇偶校验位进行穿孔来进行缩短。 例如，在控制数据经受纠错编码的情况下可以应用该装置。

公开(公告)号：US08375268B2

公开(公告)日：2013-02-12

申请号：US12888071

申请日：2010-09-22

申请人： Osamu Shinya ,  Takashi Yokokawa ,  Naoki Yoshimochi

发明人： Osamu Shinya ,  Takashi Yokokawa ,  Naoki Yoshimochi

IPC分类号： H03M13/00

CPC分类号： H04L1/005 ,  H03M13/1102 ,  H03M13/152 ,  H03M13/2906 ,  H03M13/6552 ,  H04L1/0057

摘要： 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.

摘要翻译： 一种接收装置，包括：第一解码装置，用于在其中发送使用内部码和外部码作为纠错码的每个时间帧数据，使用内部码来解码处理并输出解码数据; 存储装置，用于存储解码数据; 第二解码装置，用于将采用外部码的解码处理应用于解码数据; 以及控制装置，用于在所述存储装置使所述存储装置将所述第一解码数据的解码数据作为所述第一帧数据的解码结果的解码数据输出到所述第二帧数据的同时， 解码装置，当第一解码装置开始输出第二解码数据作为第一帧数据之后的第二帧数据的解码结果的解码数据时，将第一解码数据输出到第二解码装置，并使存储装置 存储第二解码数据，并且当第二解码数据的存储结束时，使存储装置恢复第一解码数据的输出到第二解码装置。

公开(公告)号：US08166363B2

公开(公告)日：2012-04-24

申请号：US12066641

申请日：2006-09-07

申请人： Osamu Shinya ,  Takashi Yokokawa ,  Yuji Shinohara ,  Toshiyuki Miyauchi

发明人： Osamu Shinya ,  Takashi Yokokawa ,  Yuji Shinohara ,  Toshiyuki Miyauchi

IPC分类号： H03M13/00

CPC分类号： H04L1/0052 ,  H03M13/1111 ,  H03M13/118 ,  H03M13/6577 ,  H04L1/0057

摘要： 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 (181) performs check node calculations including calculations of a nonlinear function φ(x) and its inverse function φ−1(x) of the nonlinear function so as to decode an LDPC code. A variable node calculator (103) performs variable node calculation of a variable node so as to decode the LDPC code. The check node calculator (181) has an LUT which receives a fixed-point quantized value expressing a numerical value with a fixed quantization width and outputs the result of the calculation of the nonlinear function φ(x) as a semi-floating point quantized value which is a bit sequence expressing a numerical value with a quantization width determined by a part of a bit sequence and an LUT which receives a semi-floating point quantized value and outputs the result of the calculation of the inverse function φ−1(x) as a fixed point quantized value. The invention can be applied to e.g., a tuner for receiving a satellite broadcast.

摘要翻译： 一种用于在抑制设备规模增加的同时高精度地解码LDPC码的解码装置和方法。 校验节点计算器（181）执行包括非线性函数的计算的校验节点计算（x）及其非线性函数的反函数＆phgr（-1），以解码LDPC码。 可变节点计算器（103）执行变量节点的可变节点计算，以解码LDPC码。 校验节点计算器（181）具有LUT，其接收表示具有固定量化宽度的数值的定点量化值，并将非线性函数＆amp;（x）的计算结果作为半浮点数量化 值，其是表示具有由位序列的一部分确定的量化宽度的数值的位序列和接收半浮点量化值的LUT，并输出反函数的计算结果＆phgr; -1（ x）作为固定点量化值。 本发明可以应用于例如用于接收卫星广播的调谐器。

公开(公告)号：US20090304111A1

公开(公告)日：2009-12-10

申请号：US12066641

申请日：2006-09-07

申请人： Osamu Shinya ,  Takashi Yokokawa ,  Yuji Shinohara ,  Toshiyuki Miyauchi

发明人： Osamu Shinya ,  Takashi Yokokawa ,  Yuji Shinohara ,  Toshiyuki Miyauchi

IPC分类号： H03K9/00

CPC分类号： H04L1/0052 ,  H03M13/1111 ,  H03M13/118 ,  H03M13/6577 ,  H04L1/0057

摘要： 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 (181) performs check node calculations including calculations of a nonlinear function φ(x) and its inverse function φ−1(x) of the nonlinear function so as to decode an LDPC code. A variable node calculator (103) performs variable node calculation of a variable node so as to decode the LDPC code. The check node calculator (181) has an LUT which receives a fixed-point quantized value expressing a numerical value with a fixed quantization width and outputs the result of the calculation of the nonlinear function φ(x) as a semi-floating point quantized value which is a bit sequence expressing a numerical value with a quantization width determined by a part of a bit sequence and an LUT which receives a semi-floating point quantized value and outputs the result of the calculation of the inverse function φ−1(x) as a fixed point quantized value. The invention can be applied to e.g., a tuner for receiving a satellite broadcast.

摘要翻译： 一种用于在抑制设备规模增加的同时高精度地解码LDPC码的解码装置和方法。 校验节点计算器（181）执行包括非线性函数phi（x）及其反函数phi-1（x）的计算的校验节点计算，以解码LDPC码。 可变节点计算器（103）执行变量节点的可变节点计算，以解码LDPC码。 校验节点计算器（181）具有LUT，其接收具有固定量化宽度的表示数值的定点量化值，并将非线性函数phi（x）的计算结果输出为半浮点量化值 其是表示具有由位序列的一部分确定的量化宽度的数值的位序列和接收半浮点量化值的LUT，并输出反函数phi-1（x）的计算结果， 作为固定点量化值。 本发明可以应用于例如用于接收卫星广播的调谐器。