Signal-extraction laser-pulse system architecture for thermally-assisted magnetic recording
US8310902B1 · kind B1 · utility
6Cited by
4References
16Claims
0Family size
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Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Dec 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thermal-assisted magnetic recording (TAMR) system is described which generates laser-pulse signals from the write data line. Additionally, training signals for initial synchronization are fed to the preamp IC using the write data line during servo read cycle. This requires no increase in the number of wires going to read-write driver chip (R/W IC) (preamp). In embodiments of the invention the R/W IC also includes registers that are set using serial data from the system electronics to influence the characteristics of the drive signal to the laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.