| 摘要 |
PURPOSE:To improve S/N of a color signal at the time of reproduction and to obtain a stable reproduced picture free from color unevenness by replacing a burst signal with a pseudo burst signal having a rectangular envelope and the same in phase and frequency with the burst signal, then recording the result. CONSTITUTION:Color signals 3 obtained from a recording BPF2 are supplied to an ACC circuit 4. An analog switch 40 for replacing a burst signal with a pseudo burst signal is provided between the ACC circuit and a main convertor 23. This analog switch 40 is switched and controlled by a signal 46 from a burst switching signal generating circuit, and a signal 17 of 3.58MHz from a VXO oscillating circuit 16 is supplied to the main convertor 23 as a pseudo burst signal only at the time of burst signal. After the burst signal is replaced with the pseudo burst signal, the analog switch 40 is switched to the terminal (a) side, and color signal component is supplied to the main convertor 23 as it is. |
