公开(公告)号：US20140089767A1

公开(公告)日：2014-03-27

申请号：US13626255

申请日：2012-09-25

Applicant: LSI CORPORATION

Inventor： Wu Chang ,  Fan Zhang ,  Yang Han ,  Ming Jin

IPC: H03M13/05

CPC classification number: H03M13/05 ,  H03M13/1108 ,  H03M13/1125 ,  H03M13/1171 ,  H03M13/258 ,  H03M13/2927 ,  H03M13/2948 ,  H03M13/2957 ,  H03M13/2963 ,  H03M13/2975 ,  H03M13/3746 ,  H03M13/3927 ,  H03M13/458 ,  H03M13/612 ,  H03M13/6513

Abstract: The present invention includes generating a tie-breaking metric via a comparative tie-breaking metric training process, monitoring an output of a channel detector in order to identify a tie condition between a first log-likelihood ratio (LLR) value and a second LLR value of a symbol, and upon identifying a tie condition between the first LLR value and the second LLR value of the symbol, applying the generated tie-breaking metric to the symbol in order to assign a hard decision to the symbol.

Abstract translation: 本发明包括通过比较打破中断度量训练过程产生一个断开量度，监视信道检测器的输出，以便识别第一对数似然比（LLR）值和第二LLR值之间的联系条件 并且在识别符号的第一LLR值和第二LLR值之间的系数条件时，将生成的关联度量应用于符号，以便为符号分配硬决定。

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。