发明名称 |
Reducing written-in errors in servo patterns |
摘要 |
A method for writing servo onto a disk of a hard disk drive. The method includes writing a plurality of spiral servo signals with a head. The spiral servo signals are used to generate position error signals and write a plurality of servo patterns. A write current of the head is varied for at least one servo pattern. A PES/WC relationship between the position error signals and the write current is determined and a plurality of final servo patterns are written by utilizing the PES/WC relationship and varying the write current. Varying the write current changes the trailing edge of the servo bits and controls the position of the track center. The PES/WC relationship allows the system to compensate for excursions within a single revolution of the disk.
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申请公布号 |
US2009175147(A1) |
申请公布日期 |
2009.07.09 |
申请号 |
US20080008144 |
申请日期 |
2008.01.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
SHEPHERD STANLEY H. |
分类号 |
G11B5/58 |
主分类号 |
G11B5/58 |
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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