发明名称 |
Equalization method and apparatus with gain adjustment for direct access storage device (DASD) data channels |
摘要 |
An equalization method and apparatus with gain adjustment are provided for a direct access storage device (DASD) data channel. A direction for moving each of a plurality of tap weights is calculated. New tap weights are determined for each of a plurality of tap weights in the direction. A gain of the FIR filter for the new tap weights is compared with a set threshold gain value. A gain of a gain loop of the data channel is incrementally adjusted responsive to the compared gain and set threshold gain values. A phase lag of the FIR filter for the new tap weights is compared with a set threshold phase lag value. A phase of a timing loop of the data channel is incrementally adjusted responsive to the compared phase lag and set threshold phase lag values.
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申请公布号 |
US6532259(B1) |
申请公布日期 |
2003.03.11 |
申请号 |
US19990407595 |
申请日期 |
1999.09.28 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BUSH GREGORY SCOTT;STEPHENSON JOHN JEFFREY |
分类号 |
G11B20/10;H04L7/02;H04L25/03;(IPC1-7):H04B3/04 |
主分类号 |
G11B20/10 |
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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