Color video signal reproducing apparatus

Details Color video signal reproducing apparatus Color video signal reproducing apparatus

1975-03-31

1977-02-08

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 36, 358 40, H04N 5795, H04N 9535

Patent

active

040074854

ABSTRACT:
Successive field intervals of a composite color television signal are respectively recorded on successive recording tracks which extend parallel to one another on a record medium such as a magnetic tape. During the reproduction of a color television signal in a conventional VTR (video tape recorder), successive field intervals of the color television signal are alternately reproduced from the successive record tracks by means of two signal reproducing heads which are switched alternately.
A color video signal reproducing circuit has an automatic gain control circuit for controlling the output level thereof and a muting circuit by which operation of the automatic gain control circuit is arrested for a predetermined period at the commencement of each interval of the reproduced color video signal so as to prevent color flicker from appearing on a television monitor regardless of timing axis variations caused by undesirable jitter components produced by the speed relation between the tape transport or drive and the head rotation in the VTR.

REFERENCES:
patent: 3501585 (1970-03-01), De Lange
patent: 3626087 (1971-12-01), Tomioka
patent: 3715462 (1973-02-01), Krause
patent: 3740462 (1973-06-01), Harwood
patent: 3852808 (1974-12-01), Sadashige
patent: 3947871 (1976-03-01), Amari et al.

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