发明名称 |
Combining information from parallel servo channels |
摘要 |
A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module servo module comprises two servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted metric and for a measure of the channel reliability. A weight computation module provides first and second weight signals using the measures of channel reliability from the servo channels. A first multiplying node receives a first unweighted metric and a first weight signal and is operable to output a first weighted metric. A second multiplying node receives a second unweighted metric and a second weight signal and outputs a second weighted metric. A summing node receives the first and second weighted metrics and outputs a combined weighted metric to an LPOS word decoder.
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申请公布号 |
US7982988(B2) |
申请公布日期 |
2011.07.19 |
申请号 |
US20090400369 |
申请日期 |
2009.03.09 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BUI NHAN X.;CHERUBINI GIOVANNI;CIDECIYAN ROY D.;HUTCHINS ROBERT A.;JELITTO JENS;TSURUTA KAZUHIRO |
分类号 |
G11B27/36;G11B5/584 |
主分类号 |
G11B27/36 |
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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