Data storage device gradually decreasing laser power after write operation
US9922676B1 · kind B1 · utility
1Cited by
3References
39Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 2017 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jun 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a laser configured to heat the disk while writing data to the disk. A write power is applied to the laser in order to write data to the disk during a write operation. A determination is made as to whether the laser power should be in an off state after the write operation. After the write operation, the laser power is gradually decreased to the off state based on a first decrease function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.