发明名称 |
METHODS AND APPARATUS FOR GAIN ESTIMATION USING SERVO DATA WITH IMPROVED BIAS CORRECTION |
摘要 |
Methods and apparatus are provided for gain estimation using servo data with improved bias correction. The gain is estimated using a preamble in a servo sector by obtaining a first gain estimate using a first gain estimation algorithm (such as a Zero Gain Start Algorithm) and a first portion of the preamble; storing the first portion of the preamble in a memory buffer; obtaining a second gain estimate using a second gain estimation algorithm (such as a Zero Forcing algorithm) and the first portion of the preamble; and processing Servo Address Mark (SAM) and Gray data in the servo sector using the first gain estimate substantially simultaneous to the step of obtaining the second gain estimate. A gain error can be obtained by calculating a difference between the first gain estimate and the second gain estimate. The gain error can be used in burst processing of the servo data.
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申请公布号 |
US2012026620(A1) |
申请公布日期 |
2012.02.02 |
申请号 |
US20100847661 |
申请日期 |
2010.07.30 |
申请人 |
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发明人 |
ANNAMPEDU VISWANATH;ZHANG XUN |
分类号 |
G11B27/36 |
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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