发明授权
- 专利标题: Head switch operations in a magnetic disk system
- 专利标题(中): 磁头系统中的磁头开关操作
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申请号: US994185申请日: 1997-12-19
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公开(公告)号: US6097563A公开(公告)日: 2000-08-01
- 发明人: Lance Robert Carlson , Aaron Wade Wilson
- 申请人: Lance Robert Carlson , Aaron Wade Wilson
- 申请人地址: NLX
- 专利权人: STMicroelectronics N.V.
- 当前专利权人: STMicroelectronics N.V.
- 当前专利权人地址: NLX
- 主分类号: G11B5/596
- IPC分类号: G11B5/596 ; G11B15/12
摘要:
A method and apparatus for performing head switch operations in a magnetic disk system with a magnetic disk device that is segmented into a plurality of cylinders. The cylinders are grouped into an inner zone, a middle zone, and an outer zone. The inner zone is near the innermost area of the magnetic disk device. The outer zone is near the outermost area of the magnetic disk device. The middle zone is in between the inner zone and the outer zone. The head switch is performed from a current head at a current cylinder to a target head at a target cylinder. Prior to the head switch, the system determines if the current cylinder is in either the inner zone or the outer zone. If the current cylinder is in either the inner zone or the outer zone, then the system determines if the target cylinder is in either the inner zone or the outer zone. If the target cylinder is in either the inner zone or the outer zone, then the system seeks the current head to the middle zone and then performs the head switch. If the target cylinder is in the middle zone, then the system seeks the current head to the target cylinder and then performs the head switch. If the current cylinder is in the middle zone, then the system performs the head switch without seeking. After the head switch, the system seeks the target head to the target cylinder.
公开/授权文献
- US5229989A Method and apparatus for processing digital signals 公开/授权日:1993-07-20
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