发明授权
- 专利标题: Dynamic off-track detector
- 专利标题(中): 动态离轨检测器
-
申请号: US09639567申请日: 2000-08-15
-
公开(公告)号: US06882489B1公开(公告)日: 2005-04-19
- 发明人: Don Brunnett , John Purkett , Bruce Liikanen
- 申请人: Don Brunnett , John Purkett , Bruce Liikanen
- 申请人地址: US CO Longmont
- 专利权人: Maxtor Corporation
- 当前专利权人: Maxtor Corporation
- 当前专利权人地址: US CO Longmont
- 代理商 Tejpal S. Hansra
- 主分类号: G11B5/55
- IPC分类号: G11B5/55 ; G11B5/596 ; G11B15/04 ; G11B15/087 ; G11B19/04
摘要:
A method and apparatus for dynamically detecting write fault errors is provided. According to the invention, transducer head control parameters are adjusted according to observed events. For instance, off-track events of a certain magnitude may trigger the implementation of a severe shock timer, which lengthens the delay between the off-track event and allowing write operations to resume, as compared to the standard off-track timer. According to another embodiment of the present invention, a lower write fault threshold is implemented following an off-track event of sufficient magnitude. According to yet another embodiment of the present invention, the average or accumulated position error of the transducer head is monitored, and a lower write fault threshold implemented if the average position error exceeds a threshold value. The present invention's provision of a method and apparatus that enables transducer head control parameters to be modified in response to observed off-track events allows the disk drive to provide high resistance to data loss without significant detrimental effects on the data throughput performance of the disk drive.
信息查询
IPC分类: