Self-controlled laser pulsing for thermally assisted recording
US9025420B1 · kind B1 · utility
4Cited by
5References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 15, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of storing data includes providing a write signal for a write head of a hard disk drive, generating a transition pulse signal derived from the write signal using a transition pulse generator, and generating a logic signal to drive a thermal source associated with the write head of the hard disk drive. The logic signal includes the logical summation of a cyclical base pulse signal and the transition pulse signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.