| 摘要 |
A luminous signal processing system, adapted for use in a home VTR, controls the frequency characteristic of a color signal trapping circuit in accordance with the level of a color signal component. The system widens the band of a luminous signal component, thereby improving the resolution. The system is provided with a circuit for extracting a luminous signal component from a video signal input to the recording system of the VTR, a frequency characteristic variable type color signal trapping circuit used for extracting a low-frequency carrier wave FM signal component and having a trapping frequency that varies in accordance with a control input, a circuit for extracting a color signal component from the video signal input, converting the extracted color signal component into a down-converted color signal, and extracting a down-converted color signal, a color signal level detecting circuit, adapted for the recording system, for detecting the level of a color signal included in the video signal input and supplying a detection output to the color signal trapping circuit as a control input, and an adder circuit for adding an output signal of the color signal trapping circuit and a down-converted color signal.
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