Method and apparatus for reducing flicker in shaded displays

Details Method and apparatus for reducing flicker in shaded displays Method and apparatus for reducing flicker in shaded displays

1995-11-15

1998-10-06

Wu, Xiao

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 89, 345150, 345199, 345147, G09G 336

Patent

active

058184058

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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