Write parameters used to ensure accurate phase lock during reading of a heat-assisted magnetic recording medium
US9240205B1 · kind B1 · utility
11Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Feb 17, 2015 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Based on thermal time constant of a head-to-media spacing of a write head, a write parameter is determined that includes at least one of: a modified laser power boost used at a beginning of writing; and a time adjustment affecting the beginning of the writing. The write parameter is applied to writing operations affecting a heat-assisted magnetic recording medium, the write parameter ensuring accurate phase lock during reading of the heat-assisted magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.