| 摘要 |
A luminance-chrominance signal separation circuit which receives a PAL video signal to separate the PAL video signal into a luminance signal (Y) and a chrominance signal (C), said circuit comprising: a band-limiting circuit (11); a two-dimensional luminance-chrominance signal separator (6); a non-correlation part detection circuit (13); a switch (15); a phase-adjusting circuit (7). When said non-correlation part detection circuit (13) detects the amplitude non-correlation parts of the chrominance signal (C) or the luminance signal (Y), or a phase non-correlation part of the chrominance signal (C), it is output an addition signal of the chrominance signal (C) output from said two-dimensional luminance-chrominance signal separator (6) and the luminance signal (Y) output via said switch (15) as a chrominance signal to an output terminal (Cout). While it is output at an output terminal (Yout) an addition signal representative of the difference between the video signal which has passed through said phase-adjusting circuit (7) and the chrominance signal appearing at the terminal (Cout). <IMAGE> |
