Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-01-11
1997-12-09
Nguyen, Chanh
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345 1, G09G 506
Patent
active
056965397
ABSTRACT:
A system that translates the color of a pixel being displayed in a first visual type into a comparably colored pixel for a second visual type. The system first allocates a ramp of colors evenly distributed over the color palette of the second visual type, with the ramp occupying half of the colormap in the second visual type. For each pixel displayed on the first visual type, the colors of the pixel are matched to the ramp and if a close color is in the ramp, it is displayed on the second visual type. If no ramp color is sufficiently close, a new color is allocated in the colormap of the second visual type, if possible. Color translations are retained and used again when possible. When read-only and read-write classes of colors are used, a corresponding class is defined in the second visual type's colormap.
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Garfinkel Daniel
Welti Bruce C.
Yip Thomas W.
Hewlett--Packard Company
Nguyen Chanh
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