Reproducing apparatus capable of performing high-speed reproduct

Details Reproducing apparatus capable of performing high-speed reproduct Reproducing apparatus capable of performing high-speed reproduct

1982-07-08

1985-06-04

Faber, Alan

Dynamic magnetic information storage or retrieval

Record editing

360 103, 360 70, 360 73, 360 75, H04N 5783

Patent

active

045218153

ABSTRACT:
A video signal reproducing apparatus capable of performing high-speed reproduction comprises a reproducing circuit having at least one rotary video head for scanning over a tape recorded with a video signal on tracks formed obliquely with respect to the longitudinal direction of the tape and a control pulse recorded on a track formed along the longitudinal direction of the tape, for reproducing the video signal from the oblique tracks, a tape driving circuit for causing the tape travel at a speed higher than a tape speed upon normal reproduction during high-speed reproduction, a motor controlled of its rotation, a motor speed detecting circuit for detecting the rotational speed of the motor and producing a rotation detection signal having a repetition frequency in accordance with the detected rotational speed, an input switching circuit for supplying a signal reproduced from the tape to a frequency-voltage converter upon high-speed reproduction, where the frequency-voltage converter is supplied with the rotation detection signal from the motor speed detecting circuit upon normal reproduction, and a servo circuit for controlling the tape driving circuit and/or the motor by using an output voltage of the frequency-voltage converter as a speed control signal.

REFERENCES:
patent: 3934269 (1976-01-01), Fujita
patent: 3959818 (1976-05-01), Iketaki
patent: 4001886 (1977-01-01), Bruinink
patent: 4212039 (1980-07-01), Koda
patent: 4249220 (1981-02-01), Yasutake
patent: 4318140 (1982-03-01), Shigeta
patent: 4328518 (1982-05-01), Kawata
patent: 4426668 (1984-01-01), Itoh

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