Implementing enhanced ultrafast touchdown measurement scheme using thermal and voltage actuation for hard disk drives
US9401169B1 · kind B1 · utility
3Cited by
19References
20Claims
0Family size
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Key dates
| Filing date | Jul 2, 2015 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Jul 2, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, and system are provided for implementing touchdown measurement using thermal and voltage actuation for hard disk drives (HDDs). The touchdown measurement uses a constant power applied to a thermal flyheight control (TFC) and an electrostatic voltage bias pulse is applied between the slider body and the disk to actuate the slider into contact with the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.