| 摘要 |
A luminance/chrominance separator includes a high pass filter for separating a high-frequency signal from a composite video signal, an adder for finding a sum signal indicative of a sum of signals before and after one horizontal period with respect to the high-frequency signal, a subtracter for finding a difference between the signals before and after one horizontal period, and a selection circuit for selecting smaller one of the sum and difference signal in absolute value, wherein an output of the selection circuit is used to suppress any leakage of luminance and chrominance signals into the output of a comb filter.
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