Computer graphics processing and selective visual display system – Plural display systems – Diverse systems
Patent
1991-04-22
1993-09-21
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Plural display systems
Diverse systems
345102, 345211, 345 10, G09G 100
Patent
active
052472868
ABSTRACT:
A display control device for receiving input data at a display controller-kernel unit, storing it in a memory, sequentially reading the stored data from the memory and displaying it on a display unit. The control device comprises a counter which is reset when a signal indicating writing of data in the memory is detected to output a counter signal when a predetermined value is counted, a display control circuit for outputting a control signal so as to close a gate inserted in a signal line between the display controller-kernel unit and the display unit in response to the counter signal to interrupt the signal line and turn off the backlight of the display unit, and means for invalidating the control signal when the fact that a signal is written in the memory is detected.
REFERENCES:
patent: 4868563 (1989-09-01), Stair et al.
patent: 4958915 (1990-09-01), Okada et al.
patent: 5021983 (1991-06-01), Nguyen et al.
patent: 5059961 (1991-10-01), Cheng
patent: 5065357 (1991-11-01), Shiraishi et al.
IBM Personal System/2 Hardward Interface Technical Reference.
Goon Gin
Mitsubishi Denki & Kabushiki Kaisha
Oberley Alvin E.
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