Asymmetry correction in read signal
US7817368B1 · kind B1 · utility
5Cited by
42References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 16, 2009 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and techniques relating to interpreting signals on a channel having an asymmetrical signal amplitude response can include generating multiple asymmetry matrices that model asymmetry in a received analog signal, including an effect of asymmetry spreading in a read channel; comparing the multiple asymmetry matrices; and selecting indicators of asymmetry from the matrices based on the comparing. Systems and techniques can include saving in memory an indication of the selected indicators of asymmetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.