Asymmetric channel data detection compensation
US6104765A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Oct 7, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data symbol sequence detector for choosing data symbol sequences likely to be represented by corresponding sequences of samples received by the detector with these sample sequences formed by sampling data signals obtained from magnetically stored data through a data retrieval channel which asymmetrically affects the magnitudes of the data signals. An expected sample value estimator provides estimated expected magnitude values for a selected set of samples in the sequence, and a magnitude difference determiner is used for obtaining representations of differences between values of the samples in the sequence and the corresponding estimated expected values. These differences representations can be limited in algebraic form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.