Asymmetry correction in read signal
US8094400B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2011 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Jan 11, 2031 |
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 include an integrated circuit device including: an input to receive digital data corresponding to an asymmetry corrected analog signal of a read channel; an input to receive sequence data from a discrete time sequence detector, the sequence data generated by the discrete time sequence detector based on the digital data; an output to provide a coefficient adjustment to affect asymmetry correction of the analog signal; and circuitry to generate the coefficient adjustment based on an estimate of non-linearity for the read channel, the estimate derived from the digital data and the sequence data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.