System and method for dithering with reduced memory
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United States of America Patent
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Jun 26, 2007
Grant Date -
Jul 3, 2003
app pub date -
Nov 5, 2002
filing date -
Nov 5, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dithering system yielding two-dimensional dither functioning is implemented without line memories. For each primary input color, a feedback loop outputs an color input signal plus error that can be preset to different values. The desired result is that vertical artifacts on a display formed from the output signals are relocated to different locations on consecutive display lines. If signal magnitude from the feedback loop output exceeds the magnitude of the video system creating the display, signal magnitude is preset to a value representing error at the start of the display line.
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