Apparatus for interfacing video information and computer-generated graphics on a visual display terminal
US4958297A · kind A · utility
12Cited by
11References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and circuit for selectively presenting to a display terminal information obtained from a video camera and from a computer terminal so that computer generated graphics information can be superimposed with the camera picture on the face of a display screen. An interface adapter circuit is coupled to the computer's address and data buses and is used to drive a video mixing switch to provide a computer monitor with either computer generated graphics or video information originating at a video camera, with synchronization for the camera provided by the computer terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.