| 摘要 |
PURPOSE:To make small the size and low the cost, by enabling to save one BPF through the common use of a BPF at recording and playback, through the provision of a selector switch before the BPF. CONSTITUTION:At recording, color video signal is input from an input terminal 1 and it is input to a BPF 16 via a selector switch SW15. Further, carrier chrominance signal is picked up and it is input to an ACC amplifier 5. The output is separated into two, one is input to an ACC detector 14 via a SW13 and another output is converted into low conversion carrier chrominance signal with CONV6 and LPF7 and output 9. At playback, the low conversion carrier chrominance signal is input through playback from the input terminal 3 and it is fed to the amplifier 5 via SW4. This output is input to CONV6. The output of CONV6 is divided into two, one is converted into original carrier chrominance signal via SW15 and BPF 16. The output of BPF 16 is input to the killer amplifier 11 and fed to a detector 14 via SW13. |
