Dynamic shock detection in disk drive using accumulated average position error
US7154690B1 · kind B1 · utility
33Cited by
21References
50Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 19, 2005 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Apr 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Dynamically detecting off-track errors in a disk drive by adjusting transducer head position control parameters in response to shock events. In an embodiment, shock events with large magnitude trigger a severe shock timer which lengthens the write fault before write operations resume. In another embodiment, a lower shock threshold is used following an initial shock event. In yet another embodiment, a lower shock threshold is used if an accumulated average position error of the transducer head is large.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.