Method and apparatus for manipulating video image signals
US5212544A · kind A · utility
23Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1990 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for manipulating video image signals, in which digitized composite video signals (i.e. D2 digitally encoded or NTSC) are converted to component video signals (i.e. luminance and color difference signals) allowing selected pixels to be modified. In addition, the unconverted composite video signals are also stored and a key signal is generated which indicates which of the converted (i.e. component) pixels have been modified. An output signal is then produced by combining the manipulated signals and the unmanipulated signals in proportions determined by said key signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.