Invention Grant
US08743503B1 Disk drive updating compensation values for multiple servo sectors based on PES generated for current servo sector
有权
基于为当前伺服扇区生成的PES，磁盘驱动器更新多个伺服扇区的补偿值
- Patent Title: Disk drive updating compensation values for multiple servo sectors based on PES generated for current servo sector
- Patent Title (中): 基于为当前伺服扇区生成的PES，磁盘驱动器更新多个伺服扇区的补偿值
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Application No.: US13794263Application Date: 2013-03-11
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Publication No.: US08743503B1Publication Date: 2014-06-03
- Inventor: Shan Tang , Hengchang Guo
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B5/596
- IPC: G11B5/596
Abstract:
A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo tracks defined by servo sectors. The head is positioned over a first servo track, and a first position error signal (PES) by reading a first servo sector during a first revolution of the disk and in response to a first compensation value. A second compensation value is updated for a second servo sector based on the first PES during the first revolution of the disk. A second PES is generated by reading the second servo sector during the first revolution of the disk and in response to the updated second compensation value. The first compensation value is updated for the first servo sector based on the second PES during the first revolution of the disk. The head is actuated over the disk in response to the first PES and the second PES.
Information query
IPC分类:
