Media topography driven flying height modulation sensing using embedded contact sensor
US8824091B2 · kind B2 · utility
2Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Dec 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Approaches for a flying height control scheme in a hard-disk drive (HDD) device. The flying height control scheme utilizes an embedded contact sensor (ECS) to characterize the topography of a magnetic-recording disk at various flying heights of a head slider over a corresponding disk. A relation between a particular flying height and a corresponding ECS value which characterizes the media topography at that particular flying height is represented in disk topography data. The disk topography data is accessed and used for active flying height control for the head-disk interface in view of the current ECS value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.