公开(公告)号：US08977926B2

公开(公告)日：2015-03-10

申请号：US13629726

申请日：2012-09-28

Applicant: LSI Corporation

Inventor： Chung-Li Wang ,  Lei Chen ,  Fan Zhang ,  Shaohua Yang ,  Qi Qi

IPC: H03M13/00 ,  G06F11/00 ,  H03M13/11 ,  H03M13/37

CPC classification number: H03M13/1108 ,  H03M13/3738

Abstract: A LDPC decoder includes a processor for targeted symbol flipping of suspicious bits in a LDPC codeword with unsatisfied checks. All combinations of check indices and variable indices are compiled and correlated into a pool of targeted symbol flipping candidates and returned along with symbol indices to a process that uses such symbol indices to identify symbols to flip in order to break a trapping set.

Abstract translation: LDPC解码器包括用于不满足检查的LDPC码字中的可疑比特的目标符号翻转的处理器。 检查索引和可变索引的所有组合被编译并且相关联到目标符号翻转候选的池中，并且与符号索引一起返回到使用这样的符号索引来识别符号以便打破陷阱集合的过程。

公开(公告)号：US20140223114A1

公开(公告)日：2014-08-07

申请号：US13760447

申请日：2013-02-06

Applicant: LSI CORPORATION

Inventor： Herjen Wang ,  Ngok Ying Chu ,  Johnson Yen ,  Lei Chen

IPC: G06F12/00

CPC classification number: G06F12/00 ,  G11C29/022 ,  G11C29/028

Abstract: The disclosure is directed to a system for managing data samples utilizing a time division multiplexing controller to allocate time slots for accessing a sample memory according to one or more modes of operation. The time division multiplexing controller is configured to allocate slots for concurrent access by a sample controller, a plurality of detectors, and a noise predictive calibrator when a normal mode is enabled. The time division multiplexing controller is further configured to allocate slots excluding at least one of the sample controller, the plurality of detectors, and the noise predictive calibrator from accessing the sample memory when a retry mode is enabled. In some embodiments, the time division multiplexing controller is further configured to allocate time slots for one or more clients other than the sample controller, the plurality of detectors, and the noise predictive calibrator.

Abstract translation: 本公开涉及一种利用时分复用控制器来管理数据样本的系统，以分配用于根据一种或多种操作模式访问采样存储器的时隙。 时分复用控制器被配置为当正常模式被使能时，由采样控制器，多个检测器和噪声预测校准器分配用于并行访问的时隙。 时分复用控制器还被配置为当重试模式被使能时，分配除了样本控制器，多个检测器和噪声预测校准器中的至少一个的时隙以访问采样存储器。 在一些实施例中，时分复用控制器还被配置为为除了采样控制器，多个检测器和噪声预测校准器之外的一个或多个客户端分配时隙。

公开(公告)号：US20140129905A1

公开(公告)日：2014-05-08

申请号：US13670393

申请日：2012-11-06

Applicant: LSI CORPORATION

Inventor： Lei Chen ,  Shaohua Yang ,  Johnson Yen

IPC: H03M13/13 ,  H03M13/27

CPC classification number: H03M13/6343 ,  H03M13/1102 ,  H03M13/1105 ,  H03M13/27 ,  H03M13/3723 ,  H03M13/3746 ,  H03M13/41 ,  H03M13/6331

Abstract: Various embodiments of the present inventions provide systems and methods for data processing with a flexible LDPC seed.

Abstract translation: 本发明的各种实施例提供了利用柔性LDPC种子进行数据处理的系统和方法。

公开(公告)号：US20140122979A1

公开(公告)日：2014-05-01

申请号：US13664071

申请日：2012-10-30

Applicant: LSI CORPORATION

Inventor： Lei Chen ,  Johnson Yen ,  Zongwang Li ,  Chung-Li Wang

IPC: H03M13/13

CPC classification number: H03M13/29 ,  G11B20/1833 ,  H03M13/1122 ,  H03M13/1137 ,  H03M13/114 ,  H03M13/116 ,  H03M13/1171 ,  H03M13/27 ,  H03M13/2957 ,  H03M13/658 ,  H03M13/6591

Abstract: A layered LDPC decoder sorts and selects a subset of message entries for processing based on entry size. MIN1 and MIN2 values for each message entry in the subset are truncated, and either the truncated values or non-truncated values are combined with a symbol vector based on whether the subset of message entries includes a variable node associated with the layer being processed.

Abstract translation: 分层LDPC解码器根据入口大小对消息条目的子集进行排序和选择进行处理。 子集中每个消息条目的MIN1和MIN2值被截断，并且基于消息条目的子集是否包含与被处理的层相关联的变量节点，截断值或非截断值与符号向量组合。

公开(公告)号：US20140104719A1

公开(公告)日：2014-04-17

申请号：US13650601

申请日：2012-10-12

Applicant: LSI CORPORATION

Inventor： Chu N. Ying ,  Lei Chen ,  Herjen Wang ,  Johnson Yen

IPC: G06F11/14 ,  G11B20/18

CPC classification number: G11B5/09 ,  G11B5/59616 ,  G11B20/10222

Abstract: A read channel is configured to receive at least part of a data fragment read from a storage media into a register, wherein the data fragment is configured to be formatted with a preamble, a sync mark (e.g., a syncMark), and user data, and wherein the data fragment is missing a sync mark. A position in the data fragment is selected, a sync mark is assumed at the selected position. The data is then processed assuming the sync mark is at the selected position of the data fragment to determine whether the data converges. When a determination is made that the data converges, the data is recovered.

Abstract translation: 读通道被配置为将从存储介质读取的数据片段的至少一部分接收到寄存器中，其中，所述数据片段被配置为使用前导码，同步标记（例如，syncMark）和用户数据来格式化， 并且其中数据片段缺少同步标记。 选择数据片段中的位置，在所选位置处假定同步标记。 假设同步标记位于数据片段的选定位置，则数据被处理，以确定数据是否收敛。 当确定数据收敛时，数据被恢复。

公开(公告)号：US08699164B1

公开(公告)日：2014-04-15

申请号：US13650601

申请日：2012-10-12

Applicant: LSI Corporation

Inventor： Chu N. Ying ,  Lei Chen ,  Herjen Wang ,  Johnson Yen

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/59616 ,  G11B20/10222

Abstract: A read channel is configured to receive at least part of a data fragment read from a storage media into a register, wherein the data fragment is configured to be formatted with a preamble, a sync mark (e.g., a syncMark), and user data, and wherein the data fragment is missing a sync mark. A position in the data fragment is selected, a sync mark is assumed at the selected position. The data is then processed assuming the sync mark is at the selected position of the data fragment to determine whether the data converges. When a determination is made that the data converges, the data is recovered.

Abstract translation: 读通道被配置为将从存储介质读取的数据片段的至少一部分接收到寄存器中，其中，所述数据片段被配置为使用前导码，同步标记（例如，syncMark）和用户数据来格式化， 并且其中数据片段缺少同步标记。 选择数据片段中的位置，在所选位置处假定同步标记。 假设同步标记位于数据片段的选定位置，则数据被处理，以确定数据是否收敛。 当确定数据收敛时，数据被恢复。