Non-destructive detection of slider contamination
US8995080B1 · kind B1 · utility
2Cited by
8References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/455
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for non-destructive detection of contamination on a slider in a data storage device. In some embodiments, the slider supports a read element adjacent a rotating data recording medium. A non-repeatable runout (NRRO) component of a position error signal (PES) obtained from readback signals transduced from the read element is extracted. A power spectral density (PSD) analysis of the NRRO component is performed to identify a peak power level, and slider contamination is detected responsive to the peak power level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.