Dual channel automatic picture sharpness control
US3931637A · kind A · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1974 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Jun 14, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video shaping control circuit is utilized to control a video shaping network in a television receiver for controlling the sharpness of the image displayed on a television picture tube. The video shaping control circuit is responsive to an AGC signal such that the sharpness of the displayed image is reduced when the receiver is receiving a weak signal thereby reducing snow or other noise which would otherwise be displayed on the picture tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.