Dual detector read channel with semi-soft detection
US6185716A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Jan 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for detecting data within a signal having both data and noise is disclosed herein. The apparatus includes means for receiving first samples of an input signal, a first detection unit and a second detection unit. The first detection unit processes the first data samples to create a first bit signal, a second bit signal and a probability related signal. The second detection unit includes first and second modification units and a selection unit. The first and second modification units separately modify the first data samples based on the first and second bit signals, respectively, to create first and second error signals, respectively. The selection unit selects one of the first and second bit signals based on the first and second error signals and a threshold signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.