| 摘要 |
In a vertical resolution correcting circuit, a noncorrelation component in a vertical direction of a luminance signal included in a video signal is detected. In a region where it is considered that the detected noncorrelation component consists of vertical changes in the luminance signal itself, emphasis, which increases and decreases with a predetermined characteristic, is put on the level of a reproduced luminance signal. However, when the level of the noncorrelation component is higher than a level equal to the amplitude of a synchronizing pulse or an equalizing pulse of the video signal, emphasis is not put on the level of the reproduced luminance signal so as not to cause malfunction.
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