Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1994-04-11
2000-11-28
Chang, Kent
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345132, G09G 526
Patent
active
061541931
ABSTRACT:
In order to obtain a vertically enlarged image with no indentation, reset timing of a data skipping counter is changed between odd and even lines by one horizontal scanning line by an output of a selector. Thus, data skipping timing for a signal by an AND gate is displaced between odd and even frames by one horizontal scanning line, whereby positions of inserted lines overlappingly read from a display memory in correspondence to the skipping are also displaced between odd and even frames by one horizontal scanning line. Further, color data of the inserted lines are converted to those having low chromaticity levels by +1 processing by an adder, to be supplied to a display unit. Thus, indentation of an oblique thin line, for example, is blurred so that a smooth vertically enlarged image is obtained.
REFERENCES:
patent: 4292653 (1981-09-01), Bock et al.
patent: 4471381 (1984-09-01), Kasuga et al.
patent: 4496974 (1985-01-01), Hietmann
patent: 4768092 (1988-08-01), Ishikawa
patent: 4866520 (1989-09-01), Nomura et al.
Chang Kent
Mitsubishi Denki & Kabushiki Kaisha
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