Method and apparatus for reducing flicker in shaded displays
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United States of America Patent
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Oct 6, 1998
Grant Date -
N/A
app pub date -
Nov 15, 1995
filing date -
Nov 15, 1995
priority date (Note) -
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Abstract
An apparatus for controlling a flat panel display with reduced flicker, particularly during grey scale shading. Three shading pattern lookup tables are provided, one for each sub-pixel color (Red, Blue, Green). Each shading pattern lookup table outputs a plurality of shading pattern duty cycle signals, each representing a different shade level. The phase of the three duty cycle signal patterns may be altered by adding a predetermined offset amount to one or more of the shading pattern lookup table addresses. By altering the phases of the outputs of the shading lookup tables, peak current demand within the flat panel display may be reduced and flicker or strobing of individual pixels may be reduced or eliminated.
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