Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1980-11-25
1983-08-02
Psitos, Aristotelis M.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358316, 360 331, H04N 9491, H04N 578
Patent
active
043969534
ABSTRACT:
A color video signal dubbing system comprises a reproducing apparatus and a recording apparatus. The recorded signal is a multiplexed signal of a frequency-modulated luminance signal obtained as the result that a luminance signal separated from the color video signal frequency-modulates a carrier wave to occupy a predetermined frequency band and a frequency-converted carrier chrominance signal obtained by frequency-converting a carrier chrominance signal having a color burst signal which is separated from the color video signal to a band lower than that of the predetermined frequency band. The reproducing apparatus comprises a separation circuit for separating the signal reproduced by the reproducing apparatus into the frequency-modulated luminance signal and the frequency-converted carrier chrominance signal, a level adjusting circuit for adjusting the level of the frequency-converted carrier chrominance signal separated by the separation circuit so that the color burst signal is held to a constant level, a frequency characteristic compensation circuit for compensating for the degradation in the frequency characteristic of the frequency-modulated luminance signal, introduced upon recording and reproducing processes of the frequency-modulated luminance signal separated by the separation circuit, amplitude limiting circuit for limiting the amplitude of the output frequency-modulated luminance signal of the frequency characteristic compensation circuit, and a mixing circuit for mixing the output frequency-modulated luminance signal of the frequency characteristic compensation circuit with the output frequency-converted carrier chrominance signal of the level adjusting means.
REFERENCES:
patent: 3757034 (1973-09-01), Fujita
patent: 3947871 (1976-03-01), Amari et al.
patent: 3949414 (1976-04-01), Hayashi
patent: 4193084 (1980-03-01), Yamagiwa et al.
patent: 4290082 (1981-09-01), Hirai
Fujita Mitsuo
Negishi Kazuo
Onaka Shigenori
Bernat Louis
Psitos Aristotelis M.
Victor Company of Japan Ltd.
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