| 摘要 |
<p>A video signal separation circuit (1) includes a first band-pass filter (61) for taking out a chrominance signal, a second band-pass filter (62) having a broader pass-band than the first band-pass filter (61), an edge detector (5) for detecting a portion of the chrominance signal where there is a change in colour, and a switch (7) for making a change-over between the band-pass filters (61, 62) in response to a signal from the edge detector (5). <IMAGE></p> |
