Heat-assisted magnetic recording error-recovery by erasing adjacent tracks using laser
US10026443B1 · kind B1 · utility
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5References
19Claims
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Key dates
| Filing date | May 22, 2017 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | May 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1869
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An error is determined in a target track of a heat-assisted recording medium. The error triggers an error recovery procedure. The error recovery procedure involves storing data from at least part of an adjacent track that is immediately proximate the target track to another data storage location. The error recovery procedure also involves, for two or more iterations in which a laser power is incrementally changed from a lower power to a higher power, erasing at least part of the adjacent track at the laser power and attempting to recover the target track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.