Grease wear leveling for a disk drive
US8780478B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jan 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5565
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Grease wear leveling in a disk drive including an actuator for moving a head over a disk as part of a seek operation. A count of seek operations is maintained and when the count of seek operations exceeds a first threshold number, one or more full stroke seek (FSS) operations are performed until a count of the FSS operations performed reaches a predetermined number. The FSS operation includes moving the head through a substantially wide range of motion. For each of the one or more FSS operations performed, the count of FSS operations performed is adjusted based on whether the most recent FSS operation was performed within a time window. The time window is based at least on a number of interval seek operations performed since a previously performed FSS operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.