Methods for detecting damage to magnetoresistive sensors
US8018226B2 · kind B2 · utility
5Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2008 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Nov 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method for detecting a damaged magnetoresistive sensor includes analyzing readback signals of a plurality of sensors each being positioned over data tracks on a passing magnetic medium; determining whether at least one of the readback signals is out of phase with respect to the other readback signals, and/or whether at least one of the readback signals has a significantly lower amplitude that the other readback signals. Additional methods are also presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.