Reproducing apparatus capable of performing high-speed reproduction of a video signal

Claim 1

A video signal reproducing apparatus capable of performing high-speed reproduction, said video signal reproducing apparatus comprising: reproducing means (13, 15a, 15b, 49) comprising at least one rotary video head (15a, 15b) for scanning over a tape (11) recorded with a video signal on tracks formed obliquely with respect to the longitudinal direction of said tape and control pulses recorded on a track formed along the longitudinal direction of said tape, said reproducing means reproducing the video signal from said oblique tracks; tape driving means (34, 35, 16-20) for causing tape travel at a speed higher than a tape speed upon a normal reproduction during a high-speed reproduction; a drum motor (36) for rotating said rotary video head; drum motor speed detecting means (37) for producing a first rotation detection signal which has a frequency dependent on the rotational speed of said drum motor; and servo circuit means (48, 51-56) for controlling the rotation of said drum motor so that a reproduced horizontal synchronizing signal within the video signal reproduced by said reproducing means has a constant period which is substantially identical to the period of a horizontal synchronizing signal within the recorded video signal, said servo circuit means comprising a single first frequency-voltage converter (53) for subjecting an input signal to a frequency-voltage conversion and for supplying an output voltage to said drum motor, a reference voltage source (56) for generating a reference voltage having a predetermined constant value, first switching means (52, 48) for selectively supplying the output first rotation detection signal of said drum motor speed detecting means to said first frequency-voltage converter during the normal reproduction and for selectively supplying a periodic signal within the video signal reproduced by said reproducing means to said first frequency-voltage converter during the high-speed reproduction, and second switching means (54) for selectively supplying the output reference voltage of said reference voltage source to said drum motor.