Disk drive with servo system with timing adjustments to master timer for SAM detection errors
US8749909B1 · kind B1 · utility
2Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2012 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Dec 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is described with a single servo master timer that is used to control timing critical signals such as servo gate, SAM windows, channel power save, PREAMP power save and so on. The master timer is adjusted to compensate for SAM detection errors (early, late or missed) and provides improved servo timing quality. In an embodiment the adjustable master timer can be selectably clocked by either the DLC/DSW clock or the system clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.