Television – Format conversion – Changing number of lines for standard conversion
Reexamination Certificate
2007-05-22
2007-05-22
Yenke, Brian P. (Department: 2622)
Television
Format conversion
Changing number of lines for standard conversion
C348S443000, C348S448000, C348S606000, C348S607000, C348S625000, C348S628000
Reexamination Certificate
active
10492381
ABSTRACT:
To enable a satisfactory suppression of overemphasized component after converting the number of scanning lines of video signal, when the video signal is converted in the number of scanning lines and a high-frequency component at least in a vertical direction of the converted video signal is emphasized, signals delayed by a plurality of stages of time equal to or more than a time required for converting the number of scanning lines are obtained by a delay circuit18, and an appropriate delay signal is selected from among the plurality of delay signals by a selection circuit19. The selected delay signal is compared with the emphasized video signal in emphasized-component detector circuits16a, 16band the overemphasized component is detected. Processing to suppress the emphasis is performed by suppressor circuits13a, 13bwith respect to a portion where the overemphasized signal component is detected.
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Hoshino Takaya
Imai Seiko
Kaneko Naoki
Sarugaku Toshio
Frommer William S.
Frommer & Lawrence & Haug LLP
Presson Thomas F.
Sony Corporation
Yenke Brian P.
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