System and method for pre-stressing a read head for improving performance thereof
US7639458B2 · kind B2 · utility
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11References
17Claims
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Key dates
| Filing date | Jul 9, 2004 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | May 25, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system, method and computer program product provide an annealing process for setting a magnetization condition of a read head. An amount of heat for stabilizing magnetization condition of a read head is calculated. A width and amplitude of a voltage pulse that generates the calculated amount of heat in the read head are calculated. A voltage pulse of the calculated width and amplitude is applied to the read head for generating Joule heating in the read head. The width of the voltage pulse is less than one second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.