Measurement of track eccentricity on bit patterned media
US8045282B2 · kind B2 · utility
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13References
20Claims
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Key dates
| Filing date | Feb 3, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Feb 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/743
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The eccentricity of tracks defined on a rotating bit patterned media are measured using a readback signal, and the measured eccentricity may be used to control centering of the disk relative to a rotational spindle and/or to control movement of a read/write head relative to a selected track on the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.