Method and apparatus for detecting rapid off track following and protecting nearby tracks from rapid off track writing in a hard disk drive
US8174785B2 · kind B2 · utility
1Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Mar 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/596
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This application discloses a hard disk drive using a self-resonant frequency band of a Voice Coil Motor far above its operational frequency band to predict Rapid Off Track events before its head stack assembly can deliver the disruption to the slider writing a track. A circuit board and/or an integrated circuit are disclosed in various embodiments to predict the ROT events using the self-resonant frequency band and/or to respond to the prediction to suppress the slider writing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.