System and method for evenly distributing thermal exposure to disk in heat-assisted magnetic recording (HAMR)
US8941944B1 · kind B1 · utility
3Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | May 30, 2014 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | May 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of radially positioning a heat assisted magnetic recording (HAMR) head writes data to a first band, wherein a radial position of the HAMR head within each data track is defined by a positional bias and a track location. A determination is made regarding whether a threshold has been reached with respect to the first band. If the write threshold has been reached with respect to the first band, then the positional bias associated with the first band is modified to evenly distribute thermal exposure of data tracks in the first band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.