Apparatus for compensating for luminance level of video signal
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United States of America Patent
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Sep 27, 2005
Grant Date -
Mar 28, 2002
app pub date -
Jun 20, 2001
filing date -
Jun 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A luminance level compensating apparatus passes only the luminance signal of a pixel in a first detection range in the vertical direction of an image indicated by an input luminance signal, detects and stores a first frequency for each luminance level of the passed luminance signal for each predetermined period, passes only a luminance signal of a pixel in a second detection range including the first detection range in the vertical direction of the image, detects and stores a second frequency for each luminance level of the passed luminance signal for each predetermined period; generates a mixed frequency data based on the first and second frequencies stored.
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