| 摘要 |
PURPOSE:To receive pictures with the best condition, by changing the carrier chrominance signal band pass characteristics, depending on the selective operation of a composite video signal with a television broadcast and the composite video signal from a video signal generator. CONSTITUTION:In case of the reception of a television broadcast, switching circuits 13, 13' are connected to input terminals 13a, 13a', and a composite video signal from a tuner 11 is inputted to a chroma signal processing circuit 17 via an intermediate frequency amplifying and detection circuit 12, a high pass filter 15, and a band pass filter 16. Further, in case of a signal from a video signal generator, the circuits 13, 13' are connected to the input terminals 13b, 13b', and a composite video signal is inputted to the circuit 17 via the band pass filter 16. Further, the composite video signal is inputted to a video amplifying circuit 14. |
