| 摘要 |
PURPOSE:To transmit a video signal with a narrow band by applying frequency interleaving to two color difference signals, transmitting them within the same time and also devising that a luminance signal and the color difference signals are not overlapped. CONSTITUTION:A composite video signal is fed to an input terminal 1. The luminance signal Y and a chrominance signal C are separated by a separator circuit 2. The chrominance signal C is fed to a demodulating circuit 3, where two color difference signals are extracted. One color difference signal is fed to an inverter 4 and the inverted signal and the original signal are fed to a changeover switch 5. Further, a synchronizing signal is separated from the signal from the input terminal 1, fed to a PLL7 and a multiplied signal is formed. The color difference signal and its inverted signal are extracted alternately, they are added to the other color difference signal, and the two color difference signals are synthesized while being subject to frequency interleaving and recorded on a VTR. |
