Television – Image signal processing circuitry specific to television – Gray scale transformation
Reexamination Certificate
2011-06-07
2011-06-07
Yenke, Brian (Department: 2422)
Television
Image signal processing circuitry specific to television
Gray scale transformation
C348S625000, C382S169000
Reexamination Certificate
active
07956932
ABSTRACT:
According to one embodiment of the invention, a smoothing module is configured to smooth and reduce grayscale differences in a plain area of an input digital image signal according to a collection parameter. A histogram acquisition module is configured to acquire a histogram value of the input digital image signal for one frame. A histogram value buffer module is configured to buffer histogram values for a plurality of frames. A luminance level transition detection module is configured to detect an interval during which an image gradually changes from light to dark or from dark to light, based on the histogram values for a plurality of frames, and to output the correction parameter.
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Japanese Office Action dated May 7, 2010 for application No. JP 2009-044004 (U.S. Appl. No. 12/687,043). (English Translation).
Blakely , Sokoloff, Taylor & Zafman LLP
Kabushiki Kaisha Toshiba
Yenke Brian
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