Detection and concealing artifacts in combed video signals
US4814863A · kind A · utility
4Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Keying signals indicating locations along the lines of a raster where artifacts resulting from combing a video signal occur is derived by a one line subtractive filter, a clipping circuit and a one line AND device and means are provided for replacing video signals in said location with artifact free signals at the same location in either adjacent line if such are available and providing a signal that can be used to set up notch filter rather than combed operation if the corresponding locations on both adjacent lines also contain artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.