| 摘要 |
A luminance signal/chrominance signal separating circuit comprises a 3 line logical comb filter for Y/C separation. The output of the vertical correlator of the 3 line logical comb filter comprises chrominance signal components and non-correlation components of the luminance signal, whereby the separated luminance signal components have the non-correlation components missing. The non-correlation components within the output of the vertical correlator are extracted by a trap circuit, and added to the separated luminance signal components. This prevents degradation of the oblique resolution of the reproduced luminance signal. The noise reduction circuit in the reproduction mode shares the above 3 line logical comb filter for removing the noise of the reproduced luminance signal.
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