Smooth vertical motion via color palette manipulation

Details Smooth vertical motion via color palette manipulation Smooth vertical motion via color palette manipulation

1992-10-16

1998-01-06

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345199, 345121, 345150, G09G 536

Patent

active

057060258

ABSTRACT:
Smooth vertical movement of a graphics image on a raster display is performed via color palette manipulation at any speed. A color look-up table has a color palette position for each color within the graphics image plus unassigned color palette positions that are assigned to pixels on the top of horizontal color edges of the graphics image. During movement of the graphics image the color values of the assigned color palette positions are updated each display cycle as a function of a desired rate of vertical movement of the graphics image.

REFERENCES:
patent: 4704605 (1987-11-01), Edelson
patent: 4808984 (1989-02-01), Trueblood et al.
patent: 4849746 (1989-07-01), Dubmer
patent: 4908610 (1990-03-01), Yamamuro et al.
James D. Foley "Fundamentals of Interactive Computer Graphics," 1982, pp. 691 to 692.

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