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1. 发明授权

US08914709B1 Manufacturing testing for LDPC codes 有权
标题翻译： LDPC码制造测试
公开(公告)号：US08914709B1
公开(公告)日：2014-12-16
申请号：US13041218
申请日：2011-03-04
申请人： Yu Kou , Lingqi Zeng , Jason Bellorado , Marcus Marrow
发明人： Yu Kou , Lingqi Zeng , Jason Bellorado , Marcus Marrow
IPC分类号： H03M13/00
CPC分类号： G06F11/1076 , G06F11/08 , G06F11/1012 , G11C29/56004 , H03M13/015 , H03M13/1102 , H03M13/154
摘要： A storage system includes a channel detector, an LDPC decoder, and an erasure block. The channel detector is configured to receive data corresponding to data read from a storage and output an LLR signal. The LDPC decoder is configured to receive the LLR signal and output a feedback signal to the channel detector. The erasure block is configured to erase at a portion of at least one of the LLR signal and the feedback signal. A method for testing includes generating an error rate function corresponding to an erasure pattern. The function is a function of a number of LDPC iterations. The method includes determining testing parameters at least in part based on the error rate function, wherein the testing parameters comprise a testing number of LDPC iterations, a passing error rate, and the erasure pattern. The method includes testing storage devices using the testing parameters.
摘要翻译：存储系统包括信道检测器，LDPC解码器和擦除块。信道检测器被配置为接收对应于从存储器读取的数据的数据并输出LLR信号。 LDPC解码器被配置为接收LLR信号并将反馈信号输出到信道检测器。擦除块被配置为擦除LLR信号和反馈信号中的至少一个的一部分。一种测试方法包括产生与擦除模式对应的错误率函数。该函数是多次LDPC迭代的函数。该方法包括至少部分地基于错误率函数来确定测试参数，其中测试参数包括LDPC迭代的测试次数，通过错误率和擦除模式。该方法包括使用测试参数测试存储设备。

2. 发明授权

US08572463B2 Quasi-cyclic LDPC encoding and decoding for non-integer multiples of circulant size 有权
标题翻译：用于循环大小非整数倍的准循环LDPC编码和解码
公开(公告)号：US08572463B2
公开(公告)日：2013-10-29
申请号：US13035770
申请日：2011-02-25
申请人： Lingqi Zeng , Yu Kou , Kin Man Ng , Kwok W. Yeung
发明人： Lingqi Zeng , Yu Kou , Kin Man Ng , Kwok W. Yeung
IPC分类号： G11C29/00
CPC分类号： H03M13/1111 , H03M13/116 , H03M13/3994
摘要： In processing quasi-cyclic low-density parity-check (QC-LDPC) data, an input signal is received which includes decision and reliability information corresponding to unpadded data. Decision and reliability information corresponding to padded data is introduced into the input signal. Message passing is performed one or more times to obtain decoded data. This includes using (1) the decision and reliability information corresponding to the unpadded data and (2) the decision and reliability information corresponding to the padded data, where a preference is given to the decision and reliability information corresponding to the unpadded data over the decision and reliability information corresponding to the unpadded data during message passing. Zero padding is removed from the decoded data.
摘要翻译：在处理准循环低密度奇偶校验（QC-LDPC）数据时，接收到包括与非附加数据相对应的判定和可靠性信息的输入信号。与填充数据相对应的判定和可靠性信息被引入到输入信号中。执行消息传递一次或多次以获得解码数据。这包括使用（1）对应于未附加数据的决策和可靠性信息，以及（2）与填充数据相对应的决策和可靠性信息，其中优先考虑与决定有关的未附加数据的决策和可靠性信息以及在消息传递期间对应于未附加数据的可靠性信息。从解码数据中删除零填充。

3. 发明授权

US08671326B1 Concatenated codes for recovering stored data 有权
标题翻译：用于恢复存储数据的连续代码
公开(公告)号：US08671326B1
公开(公告)日：2014-03-11
申请号：US13471747
申请日：2012-05-15
申请人： Xiangyu Tang , Yu Kou , Lingqi Zeng
发明人： Xiangyu Tang , Yu Kou , Lingqi Zeng
IPC分类号： H03M13/00
CPC分类号： H03M13/6343 , H03M13/1102 , H03M13/2909 , H03M13/2918 , H03M13/2942 , H03M13/2957 , H03M13/4138 , H03M13/6325
摘要： A method of encoding user data into a first set of codewords using a first code, generating a first set of parity information based at least in part on the first set of codewords and at least a second code, and writing at least parity information associated with the first set of parity information to shingled magnetic recording storage. A method of performing decoding on a first set of read-back signal data read back from shingled magnetic recording storage and associated with a first set of codewords, and if decoding of at least one read-back signal in the first set of read-back signal data fails, performing decoding on at least some of a second set of read-back signal data associated with a set of parity information.
摘要翻译：一种使用第一代码将用户数据编码到第一组码字中的方法，至少部分地基于第一组码字和至少第二码产生第一组奇偶校验信息，以及至少写入与第一套奇偶校验信息用于带磁记录存储。对从第一组码字读取并与第一组码字相关联的第一组回读信号数据执行解码的方法，以及如果在第一组回读中解码至少一个回读信号信号数据失败，对与一组奇偶校验信息相关联的第二组回读信号数据中的至少一些进行解码。

4. 发明授权

US08583979B1 Multiple interleavers in a coding system 有权
标题翻译：编码系统中的多个交织器
公开(公告)号：US08583979B1
公开(公告)日：2013-11-12
申请号：US12454558
申请日：2009-05-19
申请人： Lingqi Zeng , Yu Kou , Kin Man Ng
发明人： Lingqi Zeng , Yu Kou , Kin Man Ng
IPC分类号： H03M13/00
CPC分类号： H03M13/27 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/23 , H03M13/29 , H03M13/2957
摘要： A technique for processing data. The technique includes modulation encoding input data. A first interleaving process is used to obtain first interleaved data. The first interleaved data is systematically encoded. The systematically encoded data is interleaved using a second interleaving process to obtain second interleaved data. The second interleaving process is an inverse of the first interleaving process, at least for a common portion.
摘要翻译：一种处理数据的技术。该技术包括对输入数据进行调制编码。使用第一交错处理来获得第一交错数据。第一个交错数据被系统编码。使用第二交织处理来交织系统地编码的数据以获得第二交错数据。至少对于公共部分，第二交错处理是第一交织处理的倒数。

5. 发明授权

US08266497B1 Manufacturing testing for LDPC codes 有权
标题翻译： LDPC码制造测试
公开(公告)号：US08266497B1
公开(公告)日：2012-09-11
申请号：US12387720
申请日：2009-05-05
申请人： Yu Kou , Lingqi Zeng
发明人： Yu Kou , Lingqi Zeng
IPC分类号： G06F11/00
CPC分类号： G11C29/08 , G06F11/076 , G06F11/1008 , G06F11/2215 , G11C29/10 , G11C29/52 , H03M13/01 , H03M13/1102
摘要： A technique for tested is disclosed herein. A low-density parity-check (LDPC) code is received. For the received LDPC code, an error rate function is generated that is a function of a number of iterations. A number of test iterations and a passing error rate are determined using the error rate function. One or more storage media are tested using the LDPC code, the number of test iterations, and the passing error rate.
摘要翻译：本文公开了一种测试技术。接收低密度奇偶校验（LDPC）码。对于接收到的LDPC码，生成作为迭代次数的函数的错误率函数。使用错误率函数确定多个测试迭代和通过错误率。使用LDPC码，测试迭代次数和通过错误率来测试一个或多个存储介质。

6. 发明授权

US08489973B1 Numerical solution on LLR exchange in turbo equalization 有权
标题翻译：涡轮均衡中LLR交换的数值解
公开(公告)号：US08489973B1
公开(公告)日：2013-07-16
申请号：US13196729
申请日：2011-08-02
申请人： Lingqi Zeng , Yu Kou
发明人： Lingqi Zeng , Yu Kou
IPC分类号： H03M13/03
CPC分类号： H03M13/2957 , H03M13/6331 , H03M13/6591
摘要： The present application refers to a method for determining an extrinsic information input to an ECC decoder of a turbo equalizer. In one embodiment, a first loop-back signal is represented with a first number of bits, wherein the first loop-back signal comprises a signal looped back from an output of an ECC decoder. An output of a signal detector is represented with a second number of bits. An extrinsic information input to the ECC decoder is determined based at least in part on the first loop-back signal, the represented output of the signal detector, and at least one comparison with at least one predetermined threshold.
摘要翻译：本申请涉及用于确定输入到turbo均衡器的ECC解码器的外部信息的方法。在一个实施例中，第一环回信号用第一位数表示，其中第一环回信号包括从ECC解码器的输出循环回来的信号。信号检测器的输出用第二位数表示。至少部分地基于第一环回信号，所表示的信号检测器的输出和至少一个与至少一个预定阈值的比较来确定输入到ECC解码器的外部信息。

7. 发明授权

US08443257B1 Rate-scalable, multistage quasi-cyclic LDPC coding 有权
标题翻译：速率可缩放，多级准循环LDPC编码
公开(公告)号：US08443257B1
公开(公告)日：2013-05-14
申请号：US13039068
申请日：2011-03-02
申请人： Lingqi Zeng , Yu Kou , Kin Man Ng , Kwok W. Yeung
发明人： Lingqi Zeng , Yu Kou , Kin Man Ng , Kwok W. Yeung
IPC分类号： H03M13/00
CPC分类号： H03M13/116 , H03M13/611 , H03M13/616
摘要： Encoding is performed by dividing a quasi-cyclic low-density parity-check (QC-LDPC) parity check matrix into a first sub-matrix and a second sub-matrix. The first sub-matrix includes a plurality of circulant vectors and the plurality of circulant vectors is associated with a circulant size. Input data is received having a length which is a product of an integer multiplier and the circulant size. A first stage of multi-stage LDPC encoding is performed using the input data and a subset of the plurality of circulant vectors; the number of circulant vectors in the subset equals the integer multiplier.
摘要翻译：通过将准循环低密度奇偶校验（QC-LDPC）奇偶校验矩阵划分为第一子矩阵和第二子矩阵来执行编码。第一子矩阵包括多个循环向量，并且多个循环向量与循环大小相关联。接收的输入数据的长度是整数乘法器和循环大小的乘积。使用输入数据和多个循环矢量的子集来执行多级LDPC编码的第一级; 子集中循环向量的数量等于整数乘数。

8. 发明申请

US20120304036A1 MANUFACTURING TESTING FOR LDPC CODES 有权
标题翻译： LDPC编码的制造测试
公开(公告)号：US20120304036A1
公开(公告)日：2012-11-29
申请号：US13571228
申请日：2012-08-09
申请人： Yu Kou , Lingqi Zeng
发明人： Yu Kou , Lingqi Zeng
IPC分类号： G06F11/10
CPC分类号： G11C29/08 , G06F11/076 , G06F11/1008 , G06F11/2215 , G11C29/10 , G11C29/52 , H03M13/01 , H03M13/1102
摘要： An amount of time and an error rate function are received, where the error rate function defines a relationship between a number of iterations associated with iterative decoding and an error rate. A testing error rate is determined based at least in part on the amount of time. The number of iterations which corresponds to the testing error rate in the error rate function is selected to be a testing number of iterations; the testing error rate and the testing number of iterations are associated with testing storage media using iterative decoding.
摘要翻译：接收时间量和错误率函数，其中错误率函数定义了与迭代解码相关联的迭代次数与错误率之间的关系。至少部分地基于时间量确定测试错误率。将错误率函数中的测试错误率对应的迭代次数选为迭代的测试次数; 测试错误率和测试次数与使用迭代解码测试存储介质相关联。

9. 发明申请

US20120246536A1 LDPC SELECTIVE DECODING SCHEDULING USING A COST FUNCTION 有权
标题翻译：使用成本函数的LDPC选择性解码调度
公开(公告)号：US20120246536A1
公开(公告)日：2012-09-27
申请号：US13490947
申请日：2012-06-07
申请人： Kin Man Ng , Lingqi Zeng , Yu Kou , Kwok W. Yeung
发明人： Kin Man Ng , Lingqi Zeng , Yu Kou , Kwok W. Yeung
IPC分类号： H03M13/11 , G06F11/10
CPC分类号： H03M13/05 , H03M13/114
摘要： A cost function is obtained. For each of a plurality of groups of check nodes associated with low-density parity-check (LDPC) encoded data, the cost function is evaluated using information associated with a variable node and/or information associated with a check node. One of the groups of check nodes is selecting based at least in part on the evaluated cost functions. Error correction decoding related processing is performed on the selected group of check nodes.
摘要翻译：获得成本函数。对于与低密度奇偶校验（LDPC）编码数据相关联的多个校验节点组中的每一个，使用与可变节点相关联的信息和/或与校验节点相关联的信息来评估成本函数。校验节点组中的一个至少部分地基于评估的成本函数进行选择。对所选择的校验节点组执行纠错解码相关处理。

10. 发明授权

US08918696B2 Implementation of LDPC selective decoding scheduling 有权
标题翻译： LDPC选择性解码调度的实现
公开(公告)号：US08918696B2
公开(公告)日：2014-12-23
申请号：US13084022
申请日：2011-04-11
申请人： Kin Man Ng , Kwok W. Yeung , Lingqi Zeng , Yu Kou , Aditi R. Ganesan
发明人： Kin Man Ng , Kwok W. Yeung , Lingqi Zeng , Yu Kou , Aditi R. Ganesan
IPC分类号： H03M13/00 , H03M13/11
CPC分类号： H03M13/114 , H03M13/116
摘要： A method for decoding data is disclosed. The method includes partitioning a low-density parity check (LDPC) matrix into a plurality of groups, each comprising one or more check node layers. The method further includes selecting one of the groups based at least in part on a cost function, the cost function based at least in part on information associated with a variable node, or information associated with a check node, or both. The method further includes performing LDPC layered decoding on the selected group.
摘要翻译：公开了一种解码数据的方法。该方法包括将低密度奇偶校验（LDPC）矩阵划分成多个组，每个组包括一个或多个校验节点层。该方法还包括至少部分地基于成本函数来选择组中的一个，所述成本函数至少部分地基于与变量节点相关联的信息或与校验节点相关联的信息，或两者。该方法还包括对所选择的组执行LDPC分层解码。

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