Television – Format conversion – Line doublers type
Reexamination Certificate
2007-03-13
2011-11-22
Kostak, Victor (Department: 2422)
Television
Format conversion
Line doublers type
C348S700000, C382S176000
Reexamination Certificate
active
08063984
ABSTRACT:
An integration circuit divides a screen, which is composed of an input video signal, into regions, integrates absolute values of inter-field differences that are included the respective regions, and provides an intra-region integration value SDA. A dynamic range calculation circuit divides the screen into regions and calculates a dynamic range SDR of luminance in each of the regions. If the intra-region integration value SDA is greater than a comparison threshold value FDT and if the dynamic range SDR of luminance in each of the regions is greater than a comparison threshold value DCT, the region is determined to be a subtitle region.
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Blakely , Sokoloff, Taylor & Zafman LLP
Kabushiki Kaisha Toshiba
Kostak Victor
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