Color video signal recording and/or reproducing apparatus

Details Color video signal recording and/or reproducing apparatus Color video signal recording and/or reproducing apparatus

1977-10-13

1978-09-19

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 578

Patent

active

041158008

ABSTRACT:
Color video signal recording and/or reproducing apparatus comprising a first circuit for generating a first signal having the same frequency as the field frequency of the color video signal, and a second circuit for generating a second signal that indicates a field interval having a predetermined phase relationship between a horizontal synchronizing signal and a color subcarrier signal. The first and second signals are combined to form a composite control signal, which is then recorded in a control track on a magnetic tape in the conventional manner. A comparison circuit is included for comparing the composite control signal reproduced from the tape with a reference control signal, the reference control signal being composed of a third signal having a frequency equal to the field frequency and a fourth signal indicating a field interval, in which a phase relationship between a reference horizontal synchronizing signal and a reference color subcarrier signal is equal to the predetermined phase relationship. Thus, during playback the movement of the magnetic tape is controlled in response to the output of the comparison circuit so that the phase of the composite control signal reproduced from the tape coincides with that of the reference control signal.

REFERENCES:
patent: 3953881 (1976-04-01), Yanagimachi et al.

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