Method and apparatus for asymmetry correction in magnetic recording channels
US8164845B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2007 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit for compensating asymmetry in a waveform of an input signal using a piecewise approximation of a saturation curve, the circuit including a first circuit configured to output a first compensation for a first section of the saturation curve using a first function and a second circuit configured to output a second compensation for a second section of the saturation curve using a second function. The second function is different than the first function. The first compensation and the second compensation provide the piecewise approximation of a region of the saturation curve. The region includes at least the first second and the second section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.