Mehtod and apparatus for recovering digital data from baseband analog signal
US5706221A · kind A · utility
2Cited by
1References
13Claims
0Family size
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Inventor
Key dates
| Filing date | May 13, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | May 13, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data filter consists of an electronic circuit with a delay and offset in a feedback loop to a reference input of a comparator to provide low frequency tracking of a binary-level data signal so digital information can be extracted at the output of the comparator by causing the reference input to track a relatively slowly-varying baseband neutral signal level. The delay is preferably implemented by a low-pass filter, providing additional noise immunity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.