Read channel error correction using multiple calibrators
US8730606B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Read channel circuitry comprises a decoder and error correction circuitry. The error correction circuitry is configured to calibrate a first set of filters using a read channel data signal, to determine first hard decision information regarding the read channel data signal using the calibrated first set of filters, to determine an error corrected read channel data signal using the first hard decision information, to calibrate a second set of filters using the error corrected read channel data signal, to determine second hard decision information regarding the error corrected read channel data signal using the calibrated second set of filters, and to decode the second hard decision information. The first set of filters and the second set of filters are calibrated in respective first and second calibrators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.