Method and apparatus for setting magneto resistive head bias current in disk drive for desired head lifetime
US6751039B1 · kind B1 · utility
13Cited by
2References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jan 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of controlling bias supply sources for magneto-resistive transducer (MR) heads to provide essentially the same predetermined lifetime for the MR heads, by determining dependence of head lifetime on bias supply level and on head stripe temperature, and setting a bias supply level for each head based on said dependence of lifetime on bias supply level and on head temperature, to provide essentially the same predetermined lifetime for the heads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.