Systems and methods for adaptive equalization in recording channels
US8175201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a target filter circuit (265). The equalizer circuit performs equalization based at least in part on an equalizer coefficient (215). The methods further include generating an error (285) based upon a first output from the equalizer circuit and a second output from the target filter circuit. An inter-symbol interference component (295) is extracted from the error (285) and used to calculate an equalizer gradient (226). Based at least in part on the equalizer gradient (226), the equalizer coefficient (215) is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.