Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-04-28
1997-08-12
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345191, G09G 538
Patent
active
056570457
ABSTRACT:
A graphic data generating apparatus includes a data processor, a graphic memory, and a graphic processor. The data processor outputs instructions to the graphic processor for processing graphic data. The instructions include a drawing instruction for transferring graphic data stored in a predetermined location in the graphic memory to another predetermined location in the graphic memory. The graphic memory stores pixel data defining the graphic data and each of the pixel data having a plurality of bits. The graphic processor performing read out of word data having a plurality of pixel data at a word position of the graphic memory specified by a source memory address, selecting pixel data specified by a source pixel address in the readout word and writing the selected pixel data in the graphic memory at a pixel position specified by a destination pixel address of word data specified by the destination memory address.
REFERENCES:
patent: 4862150 (1989-08-01), Katsura et al.
patent: 5043713 (1991-08-01), Katsura et al.
patent: 5300947 (1994-04-01), Katsura et al.
patent: 5332995 (1994-07-01), Katsura et al.
"Digital Computer Fundamentals" by Thomas C. Bartee, McGraw-Hill Book 1960, 1966, pp. 16-17.
Kajiwara Hisashi
Katsura Koyo
Maejima Hideo
Brier Jeffery
Hitachi , Ltd.
Hitachi Engineering Co. Ltd.
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