公开(公告)号：US20140157074A1

公开(公告)日：2014-06-05

申请号：US13692908

申请日：2012-12-03

Applicant: LSI Corporation

Inventor： Fan Zhang ,  Kaitlyn T. Nguyen ,  Jun Xiao

IPC: G06F11/00

CPC classification number: G06F11/0763 ,  G06F11/0727 ,  G06F11/1443 ,  G11B20/10527 ,  G11B20/18 ,  H03M13/1111 ,  H03M13/1191 ,  H03M13/2957 ,  H03M13/3723 ,  H03M13/3738 ,  H03M13/3746 ,  H03M13/3753 ,  H03M13/6325 ,  H03M13/6343

Abstract: Systems, circuits, devices and/or methods related to systems and methods for data processing, and more particularly to systems and methods for re-processing data sets not successfully processed during standard processing.

Abstract translation: 与用于数据处理的系统和方法相关的系统，电路，设备和/或方法，更具体地涉及用于重新处理在标准处理期间未成功处理的数据集的系统和方法。

公开(公告)号：US08705192B1

公开(公告)日：2014-04-22

申请号：US13650479

申请日：2012-10-12

Applicant: LSI Corporation

Inventor： Fan Zhang ,  Ming Jin ,  Jun Xiao ,  Shaohua Yang

IPC: G11B5/09

CPC classification number: G11B20/10481 ,  G11B5/012 ,  G11B20/10268 ,  G11B20/10527

Abstract: Aspects of the disclosure pertain to a read channel system and method for providing sector prioritization for promoting improved sector processing performance. The system and method, during processing of sectors of data, prioritize each of the sectors for further processing based upon: a global iteration index of each sector, trapping set characteristics of each sector and processing latency of each sector.

Abstract translation: 本公开的方面涉及用于提供扇区优先级以促进改进的扇区处理性能的读信道系统和方法。 该系统和方法在数据扇区的处理期间，根据以下各项对每个扇区进行优先排序：基于每个扇区的全局迭代索引，捕获每个扇区的集合特征以及每个扇区的处理等待时间。

公开(公告)号：US20140104720A1

公开(公告)日：2014-04-17

申请号：US13650479

申请日：2012-10-12

Applicant: LSI CORPORATION

Inventor： Fan Zhang ,  Ming Jin ,  Jun Xiao ,  Shaohua Yang

IPC: G11B5/09

CPC classification number: G11B20/10481 ,  G11B5/012 ,  G11B20/10268 ,  G11B20/10527

Abstract: Aspects of the disclosure pertain to a read channel system and method for providing sector prioritization for promoting improved sector processing performance. The system and method, during processing of sectors of data, prioritize each of the sectors for further processing based upon: a global iteration index of each sector, trapping set characteristics of each sector and processing latency of each sector.

Abstract translation: 本公开的方面涉及用于提供扇区优先级以促进改进的扇区处理性能的读信道系统和方法。 该系统和方法在数据扇区的处理期间，根据以下各项对每个扇区进行优先排序：基于每个扇区的全局迭代索引，捕获每个扇区的集合特征以及每个扇区的处理等待时间。

公开(公告)号：US20140095961A1

公开(公告)日：2014-04-03

申请号：US13644181

申请日：2012-10-03

Applicant: LSI CORPORATION

Inventor： Fan Zhang ,  Jun Xiao

IPC: H03M13/11

CPC classification number: H03M13/1137 ,  H03M13/114 ,  H03M13/116 ,  H03M13/1515 ,  H03M13/6331 ,  H03M13/6343

Abstract: A system is described for recovering data from a number of sectors, such as the sectors of a hard disk drive (HDD) disk platter, and so forth. The system receives data from the sectors via a read channel and uses a layered data decoder to recover data from the sectors. A memory is coupled with the processor and configured to retain data received from one or more of the sectors, e.g., in retained sector reprocessing (RSR) embodiments. The system is configured to update messages in different circulant layers of the data decoder's parity-check matrix. The system uses one message update order in a processing iteration, and different message update orders in subsequent reprocessing iterations. In some embodiments, layer reordering is used for RSR. In some embodiments, circulant reordering is used for RSR.

Abstract translation: 描述了用于从诸如硬盘驱动器（HDD）盘片等的扇区的多个扇区恢复数据的系统。 系统经由读通道从扇区接收数据，并使用分层数据解码器从扇区恢复数据。 存储器与处理器耦合并且被配置为保留从一个或多个扇区接收的数据，例如在保留的扇区再处理（RSR）实施例中。 该系统被配置为更新数据解码器奇偶校验矩阵的不同循环层中的消息。 系统在处理迭代中使用一个消息更新顺序，并在后续的后处理迭代中使用不同的消息更新顺序。 在一些实施例中，层重排序用于RSR。 在一些实施例中，循环重排序用于RSR。

公开(公告)号：US08687301B1

公开(公告)日：2014-04-01

申请号：US13736804

申请日：2013-01-08

Applicant: LSI Corporation

Inventor： Fan Zhang ,  Jun Xiao ,  Haitao Xia

IPC: G11B20/10

CPC classification number: G11B20/1403 ,  G11B20/10268 ,  G11B20/10435 ,  G11B2020/1287

Abstract: The disclosure is directed to detection of a sync mark location for at least one data sector of a disk by processing a first sector and at least a second sector in parallel. A first set of data samples from the first sector is reframed according to one or more sync mark locations based upon a first selected sync mark location, and a second set of data samples from the second sector is reframed according to one or more sync mark locations based upon a second selected sync mark location. The first set of data samples and the second set of data samples are iteratively reframed and decoded until the first sector or the second sector converges or until all possible sync mark locations have been attempted.

Abstract translation: 本公开涉及通过并行处理第一扇区和至少第二扇区来检测盘的至少一个数据扇区的同步标记位置。 基于第一选择的同步标记位置，根据一个或多个同步标记位置来重新编码来自第一扇区的第一组数据样本，并且根据一个或多个同步标记位置重新构造来自第二扇区的第二组数据采样 基于第二选择的同步标记位置。 第一组数据样本和第二组数据样本被迭代地重构和解码，直到第一扇区或第二扇区收敛或直到尝试所有可能的同步标记位置为止。

公开(公告)号：US08472295B1

公开(公告)日：2013-06-25

申请号：US13646386

申请日：2012-10-05

Applicant: LSI Corporation

Inventor： Ming Jin ,  Jun Xiao ,  Fan Zhang ,  Haitao Xia

IPC: G11B7/00 ,  G11B5/09

CPC classification number: G11B20/1833 ,  G11B20/1217 ,  G11B2020/1232 ,  G11B2020/1843 ,  G11B2020/185 ,  G11B2220/2516

Abstract: The present disclosure is directed to selectively protecting a portion of a track including a plurality of data sectors. The data sectors include a plurality of user sectors and one or more parity sectors. Protected bits are designated in each of the of data sectors. The protected bits are selected to have matching bit indices across the data sectors resulting in a parallel alignment of the protected bits across the user and parity sectors. One or more selections of protected bits of the user sectors are encoded across matching bit indices to generate data values in the corresponding protected bits of the parity sectors. At least one portion of at least one failed sector is recoverable by decoding at least one selection of the protected bits when a sector error occurs at a protected bit.

Abstract translation: 本公开涉及选择性地保护包括多个数据扇区的轨道的一部分。 数据扇区包括多个用户扇区和一个或多个奇偶校验扇区。 保护的位在每个数据扇区中指定。 受保护的比特被选择为在数据扇区之间具有匹配的比特索引，导致跨越用户和奇偶校验扇区的受保护比特的并行对齐。 用户扇区的受保护位的一个或多个选择是跨匹配比特索引编码的，以在奇偶校验扇区的对应保护比特中产生数据值。 当在受保护位发生扇区错误时，至少一个故障扇区的至少一部分可通过解码受保护位的至少一个选择来恢复。