Automatic noise removal device for a picture signal
US4412253A · kind A · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1981 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Oct 1, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an automatic noise removal device which detects an amplitude of noise contained in a high frequency component of a picture signal during a flyback period of the picture signal, produces a threshold level depending on the detected signal, and removes from a video signal a high frequency component of the picture signal contained in a picture signal at a lower level than the threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.