Equipment for recording and reproducing color television signal

H - Electricity – 04 – N

Patent

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Details

350/38, 352/18.3

H04N 5/76 (2006.01) H04N 5/775 (2006.01) H04N 9/00 (2006.01) H04N 9/83 (2006.01)

Patent

CA 1040737

ABSTRACT OF THE DISCLOSURE: An equipment for recording and reproducing color television signals or VTR (video tape recorder) is combined with a color television receiver as a single unit in such a way that some of their circuits are used in common in both the VTR and receiver, whereupon the circuit design as well as operation may he much simplified. The VTR and receiver are operatively coupled to each other through a switch for selecting a recording or reproducing mode. In recording mode, the video signal, which is received and detected by the receiver, passes through the mode selection switch to the luminance signal processing circuit and the carrier chrominance signal processing circuit in the receiver. The separated luminance and chrominance sig- nals are applied to the input terminal of the VTR so that they may be recorded while one is watching the picture on a picture tube. In the reproduction mode, the luminance and chrominance signals derived from the output of the VTR are added and applied to the input terminal of the processing circuits in the receiver through the mode selection switch so that they are processed in the signal processing circuits to reproduce the picture en the picture tube. In one embodiment of the present invention, the luminance and chrominance signals may be applied to their pro- cessing circuits, respectively, in the receiver through another selection switch. An APC type or a ringing type circuit is used for color synchronization. In order to minimize the effects caused by the jitter in the VTR, a feedback loop including the reproduction circuit of the VTR is provided. In the APC (automatic phase control) circuits, the crystal oscillator and/or LC oscillator are used.

210797

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