Method, apparatus and program storage device for sensing increased resistance changes in an MR element to detect MR sensor events
US7054084B2 · kind B2 · utility
4Cited by
1References
25Claims
0Family size
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Key dates
| Filing date | Aug 29, 2003 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Nov 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and program storage device for sensing increased resistance changes in an MR element to detect MR sensor events. The initial MR resistance for each slider is recorded during the drive build. The MR resistance is periodically monitored at later stages of the drive build and during normal operation. The later MR sensor resistance measurements are compared to the baseline measurement taken during the drive build to determine if an MR sensor event occurs, such as contact being made between the MR sensor and the recording medium or an MR sensor being positioned ON or OFF the ramp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.