Television – Format conversion
Reexamination Certificate
2009-02-26
2010-06-01
Yenke, Brian P (Department: 2622)
Television
Format conversion
C348S097000, C348S448000, C348S452000, C348S701000
Reexamination Certificate
active
07728908
ABSTRACT:
According to the invention, a pull-down signal detecting apparatus includes: an interfield motion detecting module configured to determine whether or not an interfield motion between a first field signal and a second field signal exists by comparing a first counted number with a first threshold; an interframe motion determining module configured to determine whether or not an interframe motion between the first field signal and a third field signal exists by comparing a second counted number with a second threshold; a determination module configured to determine whether or not the video signal is pull-down signal based on the determination result of the interfield motion determining module and the interframe motion determining module; and a threshold control module configured to vary the first threshold, when the determination result of the interframe motion determining module corresponds with a second pull-down pattern and when the determination result of the interfield motion determining module does not correspond to a first pull-down pattern.
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Blakely , Sokoloff, Taylor & Zafman LLP
Kabushiki Kaisha Toshiba
Yenke Brian P
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