Receiver based methods and devices for combating co-channel NTSC interference in digital transmission
US5572262A · kind A · utility
36Cited by
11References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Dec 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device and method for removing co-channel conventional television signal interference from a digital signal by using an adaptive filter which tunes to the periodic components of the conventional television signal. The output of the adaptive filter is then subtracted from the received signal to produce an error signal. This error signal is then used to recursively update the taps of the adaptive filter. The invention also relates to the use of the adaptive filter in conjunction with a DFE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.