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11. 发明授权

US08819524B2 Manufacturing testing for LDPC codes 有权
标题翻译： LDPC码制造测试
公开(公告)号：US08819524B2
公开(公告)日：2014-08-26
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： H03M13/00
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。

12. 发明授权

US08607132B1 Matching signal dynamic range for turbo equalization system 有权
标题翻译：涡轮均衡系统的匹配信号动态范围
公开(公告)号：US08607132B1
公开(公告)日：2013-12-10
申请号：US13099162
申请日：2011-05-02
申请人： Yu Kou , Lingqi Zeng
发明人： Yu Kou , Lingqi Zeng
IPC分类号： H03M13/25 , H03M13/53
CPC分类号： H04L27/01 , H03M13/1102 , H03M13/2957 , H03M13/6337 , H04L1/0057
摘要： A method for reducing a number of bits for representing a value is disclosed. A first value represented with a first number of bits is transformed to a second value represented with a second number of bits, wherein the first number of bits is greater than the second number of bits. The transformed second value is scaled by a scale factor to a third value. Transforming includes selecting a target window with a width of a third number of bits, wherein the third number of bits is smaller than the first number of bits. Transforming further includes saturating the first value to a most significant bit (MSB) within the selected target window and extracting bits within the selected target window from the saturated value.
摘要翻译：公开了一种用于减少用于表示值的位数的方法。以第一位数表示的第一值被变换为用第二位数表示的第二值，其中第一位数大于第二位数。变换后的第二个值被比例因子缩放到第三个值。变换包括选择具有第三位数的宽度的目标窗口，其中第三位数小于第一位数。变换进一步包括将第一值饱和到所选目标窗口内的最高有效位（MSB），并从饱和值中提取所选目标窗口内的位。

13. 发明授权

US08589760B1 Defect scan and manufacture test 有权
公开(公告)号：US08589760B1
公开(公告)日：2013-11-19
申请号：US13076259
申请日：2011-03-30
申请人： Yu Kou , Lingqi Zeng
发明人： Yu Kou , Lingqi Zeng
IPC分类号： G11C29/00
CPC分类号： G11C29/42 , G06F11/076 , G11C29/32 , G11C29/44 , H03M13/1102
摘要： A method for detecting a defect in a portion of a storage device is disclosed. Reference data and data read from the portion are compared to determine a number of error bits and a number of error symbols. An error ratio is computed, wherein the error ratio comprises a ratio of the number of error bits to the number of error symbols. A defect is detected based on whether the error ratio exceeds a threshold. In some embodiments, the reference data and the read data are compared to determine an error vector, wherein a bit in the error vector with a value one indicates a bit error in the read data. For each of a plurality of windows of the error vector, a corresponding number of error bits is determined. A defect is detected based on whether any of the numbers of error bits exceeds a threshold.

14. 发明授权

US08448041B1 Multistage LDPC encoding 有权
标题翻译：多级LDPC编码
公开(公告)号：US08448041B1
公开(公告)日：2013-05-21
申请号：US12970731
申请日：2010-12-16
申请人： Lingqi Zeng , Abhiram Prabhakar , Kin Man Ng , Yu Kou
发明人： Lingqi Zeng , Abhiram Prabhakar , Kin Man Ng , Yu Kou
IPC分类号： G06F11/00
CPC分类号： H03M13/116 , H03M13/6505
摘要： Low-density parity-check (LDPC) encoding is performed by encoding input data using a first sub-matrix of a parity check matrix to obtain intermediate data. The parity check matrix includes the first sub-matrix and a second sub-matrix having a matrix inversion. The intermediate data is encoded using the matrix inversion of the second sub-matrix of the parity check matrix.
摘要翻译：通过使用奇偶校验矩阵的第一子矩阵对输入数据进行编码来执行低密度奇偶校验（LDPC）编码，以获得中间数据。奇偶校验矩阵包括第一子矩阵和具有矩阵求逆的第二子矩阵。使用奇偶校验矩阵的第二子矩阵的矩阵求逆来对中间数据进行编码。

15. 发明授权

US08418020B2 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：US08418020B2
公开(公告)日：2013-04-09
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： H03M13/00
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。

16. 发明申请

US20110252294A1 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：US20110252294A1
公开(公告)日：2011-10-13
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： G06F11/10
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。

17. 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。

18. 发明授权

US08843812B1 Buffer management in a turbo equalization system 有权
标题翻译： turbo均衡系统中的缓冲区管理
公开(公告)号：US08843812B1
公开(公告)日：2014-09-23
申请号：US13489122
申请日：2012-06-05
申请人： Xiangyu Tang , Yu Kou , Lingqi Zeng
发明人： Xiangyu Tang , Yu Kou , Lingqi Zeng
IPC分类号： H03M13/03 , H03M13/00 , H03M13/41 , H03M13/29
CPC分类号： H03M13/2963 , G06F11/10 , H03M13/1111 , H03M13/1125 , H03M13/1128 , H03M13/2957 , H03M13/413 , H03M13/4138 , H03M13/6331
摘要： A plurality of metrics associated with a plurality of partially decoded codewords is obtained. The plurality of partially decoded codewords has been processed at least once by a first soft output decoder and a second soft output decoder and the plurality of partially decoded codewords is stored in a memory. At least one of the plurality of partially decoded codewords is selected based at least in part on the plurality of metrics; the memory is instructed to vacate the at least one selected codeword.
摘要翻译：获得与多个部分解码的码字相关联的多个度量。多个部分解码的码字已被第一软输出解码器和第二软输出解码器处理至少一次，并且多个部分解码的码字被存储在存储器中。至少部分地基于所述多个度量来选择所述多个部分解码的码字中的至少一个; 指示存储器腾出至少一个所选择的码字。

19. 发明授权

US08677218B2 LDPC decoding with on the fly error recovery 有权
标题翻译： LDPC解码与即时错误恢复
公开(公告)号：US08677218B2
公开(公告)日：2014-03-18
申请号：US12953348
申请日：2010-11-23
申请人： Lingqi Zeng , Yu Kou
发明人： Lingqi Zeng , Yu Kou
IPC分类号： H03M13/00
CPC分类号： H03M13/1105 , G11B20/10296 , G11B20/1833 , G11B2020/185 , G11B2220/2508 , H03M13/1111 , H03M13/2957 , H03M13/4138 , H03M13/6343 , H03M13/6583
摘要： It is decided whether to adjust data associated with a decoder. In the event it is decided to adjust the data associated with the decoder, the data is adjusted to obtain adjusted data and decoding is performed using the decoder and the adjusted data. In the event it is decided to not adjust the data associated with the decoder, decoding is performed using the decoder and the data associated with the decoder.
摘要翻译：决定是否调整与解码器相关联的数据。在决定调整与解码器相关联的数据的情况下，调整数据以获得调整后的数据，并使用解码器和调整后的数据进行解码。在决定不调整与解码器相关联的数据的情况下，使用解码器和与解码器相关联的数据来执行解码。

20. 发明授权

US08504894B1 Systematic encoding for non-full row rank, quasi-cyclic LDPC parity check matrices 有权
标题翻译：非全行排序，准循环LDPC奇偶校验矩阵的系统编码
公开(公告)号：US08504894B1
公开(公告)日：2013-08-06
申请号：US13039040
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 , H03M13/618 , H03M13/6356 , H03M13/6502
摘要： Encoding is performed by putting a low-density parity-check (LDPC) generator matrix into partial quasi-cyclic form comprising an identity matrix, a parity generator matrix, a zero matrix and a remainder matrix. The parity generator matrix is quasi-cyclic and the remainder matrix is not quasi-cyclic. An encoder is used to generate LDPC encoded data using the parity generator matrix and without using the remainder matrix.
摘要翻译：通过将低密度奇偶校验（LDPC）生成器矩阵置于包括单位矩阵，奇偶校验生成矩阵，零矩阵和余数矩阵的部分准循环形式中来执行编码。奇偶生成矩阵是准循环的，剩余矩阵不是准循环的。编码器用于使用奇偶校验发生器矩阵生成LDPC编码数据，而不使用余数矩阵。

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