Colour display apparatus
US3944999A · kind A · utility
9Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1974 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Nov 20, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A Colour Display Apparatus comprises a three-gun cathode ray tube modulated by an input video signal from a digital computer. The video signal contains digital colour codes in the portions of the signal which correspond to blank spaces in the display (e.g. spaces between rows of characters). These codes are stored in a circulating shift and are used to gate the video input to the appropriate combination of guns to produce the required colour for each symbol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.