| 摘要 |
Television display apparatus comprises sampling means for sampling at least the picture signal part of an input video signal at a predetermined sampling rate, time base conversion means 3 into which the sampled picture signal or digital data corresponding thereto is written at the sampling rate and from which the same is read out at a rate different from the sampling rate so that a picture signal compressed or expanded in time base is obtained, display means 7 supplied with the time base compressed or expanded picture signal and for displaying a picture image or images by a scanning beam or beams modulated by the time-base-compressed or -expanded picture signal, and deflection means 5, 6 for generating vertical and horizontal deflection currents to drive the scanning beam or beams, wherein the deflection means is adapted to generate the horizontal deflection current with a frequency different from the horizontal frequency of the input video signal. The aspect ratio of the video signal may differ from that of the display, the display area left by this difference in aspect ratios may be put to a variety of uses, including displaying sub-pictures and text. Specifically an input video signal having an aspect ratio 16:9 is displayed on a screen having an aspect ratio 4:3. <IMAGE>
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