Apparatus and methods for synthesizing foreground and background images
US6188444A · kind A · utility
4Cited by
5References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Mar 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for improving the clarity of a picture produced from a video signal. A differentiation circuit is provided that produces a responsive correction signal. Mechanisms for adjusting the shape (width, amplitude, etc.) of the correction signal are disclosed. Disabling the correction signal during blanking intervals and synchronization is also disclosed, among other features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.