Method of detecting polarity reversal in a magnetoresistive sensor
US6965229B2 · kind B2 · utility
8Cited by
9References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for testing a magnetoresistive sensor for polarity reversal. In one embodiment, the method includes: writing a test pattern on a magnetic disk; providing a mechanical or thermal stress to the magnetoresistive sensor for a period of time; and, comparing the polarity of the test pattern before and after the application of stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.