Method and apparatus for decoding a read channel signal
US6172637A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jun 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit converts an analog read channel signal to a digital data signal. A read channel error detector generates an error signal in response to an error in an analog read channel signal. In a set of parallel switches, each parallel switch is connected in series to a pullup resistor and a DC voltage source. A selected parallel switch changes state in response to the error signal so as to provide an adjusted analog read channel signal. A first input of a comparator is coupled to the set of switches, while a second input of the comparator is maintained at a reference voltage. The comparator outputs a digital data signal in response to the adjusted analog read channel signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.