Head damage detection based on actuation efficiency measurements
US7652840B2 · kind B2 · utility
2Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2007 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Mar 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuation efficiency for a head is determined based on a displacement of the head relative to a storage media responsive to excitation of a heater element. Damage to the head is detected based on the determined actuation efficiency. Related circuits and devices are also discussed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.