Sony Corporation

Other

Hiroyuki Kaimai

Masaaki Komatsu

Masakazu Sonoda

Toshimitsu Kamai

Atsuo Sakai

In an apparatus for reproducing video signals recorded in successive parallel tracks extending at an angle to the lengthwise direction of a tape and wherein two main reproducing heads having different azimuth angles with respect to each other are arranged to be diametrically opposed and alternately reproduce the video signals from the tracks when the tape is transported lengthwise at a standard speed, and an auxiliary reproducing head having the same azimuth angle as one of the main reproducing heads is circumferentially displaced by (n+0.25)H' from another of the main reproducing heads where n is zero or a positive integer and H' is an angle corresponding to one horizontal scan line on the tape, from the auxiliary reproducing head and reproduces the video signals in cooperation with one of the main reproducing heads when the tape is stopped and delay control means for alternately delaying the reproduced video signal from one of the main reproducing heads and the video signal from the auxiliary reproducing head by an amount corresponding to a break in the continuity of the horizontal synchronizing pulses which occurs in synchronism with the changing of the reproduction of said video signals by the one of the main reproducing heads and auxiliary reproducing head.

Video signal reproducing apparatus

In an apparatus which reproduces video signals using rotating heads to scan oblique tracks formed on a tape, the tape is intermittently moved and stopped by a tape capstan motor which is driven by a motor drive pulse. The motor drive pulse is generated at predetermined time intervals corresponding to a predetermined number of tracks for slow-motion reproduction of the recorded video signals. Deviations in the amount of tape intermittently advanced, as measured by a predetermined number of tracks, is avoided by varying the pulse-width or amplitude of the motor drive pulse.

Apparatus for reproducing video signals in a slow-motion operating mode

In an apparatus which reproduces video signals from oblique tracks successively formed on a tape, there are provided at least two main rotary heads having different azimuth angles with respect to each other an auxiliary rotary head having the same azimuth angle as that of one of the main rotary heads and which is disposed to substantially scan the same track as that scanned by the one of the main rotary heads. A tape driving circuit for slow motion reproduction of the recorded video signals in which the tape is intermittently driven by an amount corresponding to a predetermined number of the tracks during each of a plurality of predetermined time intervals, and a head control circuit for controlling the operation of the main rotary heads and the auxiliary head in response to the tape driving circuit and head change-over pulses such that when the tape is stopped, the video signals are alternately reproduced by the one of the main rotary heads and the auxiliary rotary head, and the video signals are alternately reproduced by the two main rotary heads during movement of the tape.

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Kawasaki, Japan

Hiroyuki Kaimai