发明名称 |
Write precompensation optimization in a PRML channel using a selected PRML signal level |
摘要 |
Write precomposition optimization for a partial response maximum likelihood ("PRME") magnetic recording chapel adapted to a mass production environment. Optimal write precompensation may be determined by writing a tribit data pattern known to produce worst case nonlinear transition shift ("NLTS") onto a magnetic recording medium; reading back the recorded data pattern; and calculating the mean-squared error ("MSE") for one or more of the equalized data sample levels associated with the PRML channel to be optimized. The writing and reading back process is repeated with varying amounts of precompensation applied to the written pattern. The optimal amount of write precompensation is determined eider by minimizing the MSE for a selected sample level or by minimizing MSE between the middle and the upper or lower of the ternary PRML sample levels.
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申请公布号 |
US5583705(A) |
申请公布日期 |
1996.12.10 |
申请号 |
US19950560084 |
申请日期 |
1995.11.17 |
申请人 |
QUANTUM CORPORATION |
发明人 |
ZIPEROVICH, PABLO A.;CHE, XIAODONG |
分类号 |
G11B5/09;G11B20/10;G11B20/12;G11B20/14;G11B27/36;(IPC1-7):G11B5/09 |
主分类号 |
G11B5/09 |
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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