Delaying unload operation when rate of unloads exceeds a time varying unload limit
US9117481B1 · kind B1 · utility
1Cited by
20References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2009 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Sep 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk, a head, and a ramp located near an outer periphery of the disk. The disk drive further comprises control circuitry operable to load the head off the ramp over the disk, receive an unload command to perform an unload operation, evaluate a number of unloads relative to an unload limit that varies over time, and when the number of unloads exceeds the unload limit, delay the unload operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.