System and method for producing a palette of many colors on a display screen having digitally-commanded pixels
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United States of America Patent
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Mar 29, 1994
Issued Date -
N/A
app pub date -
Jun 16, 1992
filing date -
Apr 10, 1989
priority date (Note) -
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status (Latency Note)
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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.
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