Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording
US8149652B2 · kind B2 · utility
12Cited by
20References
10Claims
0Family size
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Key dates
| Filing date | Mar 10, 2009 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Mar 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises a storage medium, a recording head, a source of electromagnetic radiation, and a control circuit for modulating the source of electromagnetic radiation in response to a static deviation of a spacing between the recording head and the storage medium. A method of compensating a static deviation of a spacing between a recording head and a storage medium performed by the apparatus, and a method of precompensating for nonlinear transition shifts in a heat assisted magnetic recording system, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.