Magnetic recording channel utilizing control fields for timing recovery, equalization, amplitude and amplitude asymmetry
US7102839B2 · kind B2 · utility
5Cited by
35References
33Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Dec 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Channel parameters for a magnetic readback channel are optimized by detecting a readback signal that is recorded on a magnetic medium. The readback signal contains a plurality of predetermined-length control fields. Each control field is arranged between two user data fields and contains at least one transition. At least one selected readback parameter, such as a frequency of a readback channel system clock, a gain of the readback channel, a equalization response of the readback signal, and/or an amplitude asymmetry of the readback channel, is optimized based on information contained in at least one control field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.