System and method for producing a palette of many colors on a di

Details System and method for producing a palette of many colors on a di System and method for producing a palette of many colors on a di

1992-06-16

1994-03-29

Brier, Jeffery

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345152, G09G 504, G09G 510, G09G 128

Patent

active

052989151

ABSTRACT:
An apparatus is disclosed for controlling primary color producing sub-pixels of a digitally commanded display to provide mixed colors in which sub-pixels are controlled over a programmable number N of consecutive frames to be either ON or OFF during each of the frames so that a desired time averaged brightness is produced of the primary color associated with each sub-pixel, and so that the combination of the produced time averaged brightnesss results in the color desired for the pixel to which the sub-pixels belong. The apparatus employs a modulo-N adder for programmably controlling each primary color sub-pixel by using a frame rate duty cycle approach.

REFERENCES:
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4488150 (1984-12-01), Kanatani
patent: 4516118 (1985-05-01), Wahlquist
patent: 4709995 (1987-12-01), Kuribayashi et al.
S-MOS Systems, Inc. sales brochure for "Dragon Graphic Chip Sets" (Preliminary), undated.

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