Tone conversion apparatus, image display apparatus using the same, and tone conversion method
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jun 28, 2007
app pub date -
Dec 4, 2006
filing date -
Dec 6, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a tone conversion apparatus, a decision-processing section sequentially detects a signal level difference between pixels of an image in a predetermined direction thereof by using the image signal having a first number of bits, determines whether the signal level difference remains within a preset signal level difference, and determines a pixel which has the same signal level as that of an immediately preceding pixel that encounters the signal level difference and is consecutive with the immediately preceding pixel. A bit-allocation-processing section may also be utilized.
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