Servo system for video signal recording and playback system

Details Servo system for video signal recording and playback system Servo system for video signal recording and playback system

1974-02-20

1976-05-25

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 10, 360 35, H04N 5795, G11B 1700, G11B 1924

Patent

active

039598195

ABSTRACT:
A servo system for use in a video signal recording and playback apparatus to control rotation of an electric motor which drives a recording medium for the composite video signal. A reference signal generator generates a reference signal having a period equal to an integral multiple of the horizontal synchronizing period of the composite video signal. A servo control circuit controls the rotation of the electric motor in response to any phase difference between the reference signal and a rotational speed signal sensed from and corresponding to the speed of the electric motor.

REFERENCES:
patent: 3636253 (1972-01-01), Notani et al.
patent: 3718754 (1973-02-01), Goshima et al.
patent: 3814844 (1974-06-01), Waldspurger

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