Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1980-05-29
1983-08-23
Faber, Alan
Facsimile and static presentation processing
Facsimile
Recording apparatus
358323, 358324, 360 27, H04N 579
Patent
active
044007426
ABSTRACT:
A magnetic recording and reproducing apparatus, for recording and reproducing the color television signal including VIR signal, of the type having a comb filter which is inserted in the chrominance signal system and includes a delay line for causing a delay equal to one horizontal line scanning period. In this apparatus the VIR signal has no line correlation so that the output of the comb filter becomes a VIR signal the amplitude of which is reduced by 6dB and that the amplitude and/or phase of the chrominance components of VIR signal are caused to vary over a wide range due to the effects of VIT signal. In order that the stable and correct color images may be reproduced even by a color television receiver of the type in which the amplitude and phase of the chrominance components of VIR signal are detected so as to automatically adjust the color saturation and hue, the amplitude of the chrominance components of VIR signal is detected and corrected in a recording system of a magnetic recording and reproducing apparatus; the burst signal and the chrominance components of VIR signal are compared in phase so as to correct the phase of the carrier color signal with the difference signal before the carrier color signal is recorded; and in the playback mode the chrominance components of VIP signal of the carrier color signal free from time axis distortions are replaced with the stable oscillator output.
REFERENCES:
patent: 3461226 (1969-08-01), Carnt
patent: 3626087 (1971-12-01), Tomiska
patent: 3679816 (1972-07-01), Avins
patent: 3755617 (1973-08-01), Ichida
patent: 3786176 (1974-01-01), Narahara
patent: 3812523 (1974-05-01), Narahara
patent: 4034397 (1977-07-01), Frost
patent: 4041526 (1977-08-01), Kaneko
patent: 4121242 (1978-10-01), Janko
"Network VIR Signals Provide Critical Tests" by Elkins Broadcast Engineering, pp. 32-34, Jan. 1971.
Arimura Ichiro
Ohtsu Masamitsu
Yamamitsu Chojuro
Faber Alan
Matsushita Electric - Industrial Co., Ltd.
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