Automatic chrominance control circuit for a color video tape rec

Details Automatic chrominance control circuit for a color video tape rec Automatic chrominance control circuit for a color video tape rec

1980-06-12

1982-10-26

Hecker, Stuart N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 40, 307350, H04N 579

Patent

active

043565069

ABSTRACT:
In a color video signal recording and reproducing apparatus of the type in which the color video signal is separated into the luminance signal and the composite carrier color signal; the separated composite carrier color signal is shifted in frequency; and the frequency-shifted composite carrier color signal and the separated luminance signal are processed for recording, the apparatus including a variable gain control means for controlling gain of the reproduced composite carrier color signal, and a system for generating the control signal for controlling the gain of the variable gain control means, the system having a means for detecting the amplitude of the composite carrier color signal, a means for generating the control signal in response to the output from the detecting means and a means for maintaining the amplitude of the control signal at a predetermined level.

REFERENCES:
patent: 3764734 (1973-10-01), Srivastava et al.
patent: 3943560 (1976-03-01), Freestone
patent: 3947871 (1976-03-01), Amari et al.
patent: 3967313 (1976-06-01), Miyamoto
patent: 4007485 (1977-02-01), Sato
patent: 4068256 (1978-01-01), Tsuchiya et al.
patent: 4068257 (1978-01-01), Hirota et al.
patent: 4106054 (1978-08-01), Tzakis

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