Disk drive detecting positive correlation in fly height measurements
US8320069B1 · kind B1 · utility
134Cited by
86References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Mar 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6011
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a plurality of disks having a plurality of disk surfaces. The disk drive further comprises a head actuated over each disk surface, and a spindle motor for rotating the disks. A first fly height measurement is generated for a first disk surface, and a second fly height measurement is generated for a second disk surface. A positive correlation is detected in the first and second fly height measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.