Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1991-01-23
1994-02-22
Britton, Howard W.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345123, 345127, 345145, G09G 106
Patent
active
052891682
ABSTRACT:
Image handling apparatus comprises a store (22) for storing digital data defining an image; a monitor (30) connected to the store for displaying the image; a control system (1,2) for controlling the image display; and a digitizing tablet (5) defining an area corresponding to the area of the image displayed on the monitor (30) and a pen (31) moveable across the tablet (5). The control system (1,2) is responsive to movement of the pen (31) beyond the monitor display defining area of the tablet (5) to change the manner in which the image is displayed (e.g. scroll, zoom etc.)
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patent: 4972496 (1990-11-01), Sklarew
patent: 4983786 (1991-01-01), Stevens et al.
patent: 5075673 (1991-12-01), Yanker
European Search Report, Dated Mar. 30, 1993.
Au A.
Britton Howard W.
Crosfield Electronics Ltd.
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