Method and apparatus for combining video images on a pixel basis
US5532714A · kind A · utility
57Cited by
16References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Aug 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/026
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for raster-scanned video graphics systems where clocked digital video words from a plurality of sources are combined so that, at each video clock time, a word is chosen from one of the ports to light the current pixel on a display. There is an input port for each video source and a gate associated with each input port for passing or inhibiting a binary word. A decision at each video clock time chooses a word from one of the ports and passes it to an output port which leads to a video display or palette device. This decision is based on the data content of the current digital video words at the input ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.