Method of and circuit for processing a picture signal
US5001563A · kind A · utility
13Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Aug 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a picture signal processing circuit including an interpolation filter having a median filter (67) having a first input (63), a second input (69) and a third input (63) to which respective signals from picture elements of three positionally consecutive lines from a preceding and a present field of a line and field-sequentially assembled picture signal are applied, it has been found that a better result can be obtained for moving contours in the picture signal by taking a (weighted) average from these signals of the present field, and to take this average instead of or mixed with an output signal (Y') of the median filter (67).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.