发明名称 |
METHODS AND APPARATUS FOR SELECTIVELY RETAINING READ SIGNAL SEGMENTS BASED ON ASSIGNED RELIABILITY METRICS IN A HARD DISK DRIVE |
摘要 |
<p>Methods and apparatus are provided for improved physical re-read operations in a hard disk drive. The disclosed methods and apparatus selectively retain data in a hard disk drive. A signal is read in an iterative read channel by assigning a reliability metric to each of a plurality of segments in a read signal; repeating the assigning step for a plurality of read operations; and selectively retaining the segments based on the assigned reliability metric. The read signal can be obtained by positioning a transducer over a storage media. The reliability metric may be based on soft bit decisions; log likelihood ratios or a noise estimation of a given segment.</p> |
申请公布号 |
KR20110069794(A) |
申请公布日期 |
2011.06.23 |
申请号 |
KR20117007252 |
申请日期 |
2008.12.23 |
申请人 |
LSI CORPORATION |
发明人 |
LIU JINGFENG;YANG SHAOHUA;SONG HONGWEI;LEE YUAN XING |
分类号 |
G11B20/18;H03M13/11;H03M13/29 |
主分类号 |
G11B20/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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