Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1995-08-02
1998-04-28
Chow, Dennis-Doon
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345150, 345153, G09G 506
Patent
active
057451036
ABSTRACT:
A method and system for determining an optimal color palette for simultaneously displaying multiple graphic objects associated with different color palettes, particularly, when a new object may subsequently be added to the display. A multimedia authoring system that is used to specify graphic objects appearing on a page of the multimedia work incorporates machine instructions for creating the optimal color palette used in displaying the graphic objects when the multimedia work is run on a personal computer system (10). Preferably, the optimal color palette has up to 256 colors, including 20 that are used by the graphic user interface operating system. Colors are added to the optimal color palette by hashing the colors used in the color palettes associated with each of the graphic objects included on a page of the multimedia work, until the color palettes associated with all objects on a page have been processed or until all available colors in the optimal color palette are used. The author of the work has the ability to set a tolerance applied in the hashing process so that only colors in the color palettes of the graphic objects that differ from colors already added to the hash table by more than selected tolerances for all of the red, green, and blue components are included in the optimal color palette.
REFERENCES:
patent: 5140312 (1992-08-01), Ishii
patent: 5459486 (1995-10-01), Iverson et al.
patent: 5608626 (1997-03-01), Hester
Anderson Ronald M.
Chow Dennis-Doon
Microsoft Corporation
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