Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1993-10-07
1995-10-10
Weldon, Ulysses
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
348407, 348416, G09G 102
Patent
active
054574811
ABSTRACT:
A memory apparatus for use in a receiver for decoding video signals comprises a first memory for storing an image frame; a second memory for storing current pixel data temporally and providing the same to said first memory; an address generator for generating address signals for sequentially addressing two-dimensional pixels in the blocks; a delay unit for delaying said address signals by a predetermined delay time in generating write address signals for said first memory; an offset unit for comparing the said address signals with an offset address so as to prohibit the provision of write address signals to said first memory until one of said address signals reaches to said offset address; and a control circuit for selectively providing the read address signals and the write address signals to said first memory.
REFERENCES:
patent: 4445115 (1984-04-01), Rudgard
patent: 4691230 (1987-09-01), Kaneko et al.
patent: 5089887 (1992-02-01), Robert et al.
patent: 5121202 (1992-06-01), Tanoi
patent: 5204740 (1993-04-01), Ishii
Kwon Oh-Sang
Sohn Chang
Daewoo Electronics Co. Ltd.
Pinsak William F.
Weldon Ulysses
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