Alternative sensors for tracking and timing in bit patterned media
US7609469B2 · kind B2 · utility
10Cited by
17References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 29, 2007 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a bit patterned magnetic storage media, a write transducer positioned adjacent to the bit patterned magnetic storage media, a write driver coupled to the write transducer to deliver write pulses to the write transducer, an optical sensor for producing a bit pattern signal, and a timing recovery circuit for producing a synchronization signal in response to the bit pattern signal, wherein the timing of the write pulses is adjusted in response to the synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.