Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-03-12
1986-12-02
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358320, H04N 9493, H04N 576
Patent
active
046269290
ABSTRACT:
A color video signal recording and reproducing apparatus comprises a circuit for separating a luminance signal and a carrier chrominance signal from a color video signal, a first compressing circuit for time base compressing the luminance signal by use of a RAM, a second compressing circuit for time base compressing a line-sequential color difference signal obtained from the carrier chrominance signal by use of a RAM, a circuit for producing a discriminating signal, a circuit for time-division-multiplexing signals obtained by subjecting output digital signals of the first and second compressing circuits to a digital-to-analog conversion and the discriminating signal to produce a time-division-multiplexed signal, a circuit for recording the time-division-multiplexed signal on a recording medium and reproducing the recorded signal to obtain a reproduced time-division-multiplexed signal, first expanding circuit for obtaining a digital luminance signal in an original time base by use of a RAM from the reproduced time-division-multiplexed signal, a second expanding circuit for obtaining a digital line-sequential color difference signal in an original time base by use of a RAM from the reproduced time-division-multiplexed signal, and a circuit for obtaining a reproduced luminance signal and a reproduced line-sequential color difference signal by subjecting the output digital signals of the first and second expanding circuits to a digital-to-analog conversion.
REFERENCES:
patent: 3717725 (1973-02-01), Numakura
patent: 3781463 (1973-12-01), Bussche
patent: 4245235 (1980-01-01), Poetsch
Fernseh-und Kinotechnik, 1980, No. 12, pp. 451-458.
Ichinoi Yutaka
Nishimoto Naomichi
Richardson Robert L.
Victor Company of Japan Ltd.
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