摘要 |
PROBLEM TO BE SOLVED: To precisely switch screen display modes with the minimum processing by taking into consideration a video black belt and a caption even though there is no control signal showing a video aspect ratio nor identification signal for screen size control in a video signal. SOLUTION: A black belt determining part 11 determines whether there is a black belt whose display is omittable in an input video signal by detecting the existence/absence of a real video, a black belt and a black belt with a caption on the basis of a luminance level of a video signal. The black belt determining part 11 detects the existence/absence of the real video, a black belt video and a black belt video with the caption at a luminance level within prescribed ranges for real video detection, for black belt detection, and for caption detection, respectively. A video segmenting part 12 determines a range of a video signal to be segmented from the input video signal on the basis of only a determination result in the black belt determining part 11 to perform segmentation. A scaling part 13 magnifies/reduces the video signal segmented by a video segmenting part 12 so as to match display resolution in a display panel 5. COPYRIGHT: (C)2006,JPO&NCIPI
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