Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1993-03-08
1997-01-14
Hjerpe, Richard
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345186, G09G 506
Patent
active
055944736
ABSTRACT:
A computer that provides data to a video display using a bitmap display memory organization and bitplane addressing. Separate control is provided for two bitplane backgrounds and for eight reusable and easily movable sprites. Additional logic allows for dynamically-controllable interobject priority and collision detection among data in each of the bitplane backgrounds and sprites. A coprocessor provides for video beam-synchronized changes to data in registers, freeing the main processor for general purpose computing tasks. A block image transferer is provided to rapidly copy data in large blocks from one memory location to another. In hold-and-modify mode, color output circuitry holds the values for a previously displayed pixel while bitplane data modifies those values, allowing for simultaneous display of a greatly increased number of colors.
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Dean Dave
Decuir Joseph C.
Miner Jay G.
Nicholson Ronald H.
Tanaka Akio
Escom AG
Hjerpe Richard
Liang Regina
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