Computer graphics processing and selective visual display system – Display driving control circuitry – Physically integral with display elements
Patent
1995-03-20
1998-05-12
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display driving control circuitry
Physically integral with display elements
345185, 345190, 345193, 395515, G09G 504
Patent
active
057512779
ABSTRACT:
An image information control apparatus includes a first system for recognizing scanning of a position of image information, and a first memory unit for, when the first system recognizes scanning of the position of image information, detecting and storing an address accessed to an image information storage with, the access being started by the recognition in units of lines in a scanning direction. In addition, a second memory unit stores a line address detected and stored for the first time, a second system compares contents of the first system for recognizing scanning of the position of image information with contents of the second memory unit, and a third system interrupts the function of the first system on the basis of the comparison result of the second system. A fourth system interrupts the function of the first system when drawing processing, control of which is started by scanning the position of image information, is ended.
REFERENCES:
patent: 5068651 (1991-11-01), Takebe et al.
patent: 5097256 (1992-03-01), Eldridge et al.
patent: 5196837 (1993-03-01), Shoji et al.
Canon Kabushiki Kaisha
Hjerpe Richard
Lao Lun-Yi
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