Display control system with control of background luminance or color data
US4827251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/026
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display control system with a control of background luminance or color data applicable for a personal computer with a paper-white type display device includes a character video signal generation unit, a background luminance setting register, a video enable signal generation unit, a video signal priority unit, and a video signal synthesis unit. A first video enable signal from the video enable signal generation unit controls the supply of the video signals to the video signal priority unit. A second video enable signal from the video enable signal generation unit controls a display of background in a background luminance tone or color designated by the background luminance setting register for an intermediate range when the character video signal is absent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.