Heat-assisted magnetic recording apparatus capable of detecting optical power change based on one or more of phase errors and dibit response
US9842621B1 · kind B1 · utility
4Cited by
11References
20Claims
0Family size
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Key dates
| Filing date | Aug 25, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus determines that phase errors have exceeded a threshold when reading data previously recorded to a heat-assisted recording medium. In response to the phase errors exceeding the threshold, remedial action is taken to prevent loss of data due changes in power applied to heat the heat-assisted recording medium when recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.