Measurement of slider body clearance in a magnetic disk drive using positive and negative electrical pulses
US7310198B2 · kind B2 · utility
14Cited by
3References
22Claims
0Family size
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Key dates
| Filing date | Jun 15, 2005 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Jun 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for measuring slider body clearance in a hard disk drive using positive and negative electrical pulses. In one embodiment, at least one positive direct current (DC) pulse is applied between a slider body and a hard disk of the hard disk drive. Furthermore, at least one negative direct current (DC) pulse is applied between the slider body and the hard disk. A contact potential voltage between said slider body and said hard disk is then determined in response to applying the at least one positive direct current (DC) pulse and the at least one negative direct current (DC) pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.