System for reproducing a video signal in a still picture reprodu

Details System for reproducing a video signal in a still picture reprodu System for reproducing a video signal in a still picture reprodu

1984-05-23

1987-03-10

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Record editing

360 101, 358312, H04N 5783

Patent

active

046494391

ABSTRACT:
A system for reproducing a video signal in a still picture reproduction comprises a circuit for generating a still picture reproduction mode signal during a still picture reproduction mode, a circuit for counting a predetermined number of pulses in the rotation detection pulse signal, after the still picture reproduction mode signal is generated, from a point in time when a reproduced control pulse signal or a signal in phase with the reproduced control pulse signal is first obtained as a reference signal, and for generating a rotation stopping signal as an output signal when the predetermined number of pulses are counted, a circuit responsive to the still picture reproduction mode signal, for reducing a voltage which is applied to a capstan motor, and a circuit for stopping the rotation of the capstan motor responsive to the rotation stopping signal which is obtained after the voltage applied to the capstan motor has been reduced and a rotational speed of the capstan motor has decreased. The predetermined number is selected to a value so that a magnetic tape stops moving at a position where a noise in a reproduced picture which is obtained from a video signal reproduced by rotary video heads is a minimum.

REFERENCES:
patent: 4215378 (1980-07-01), Sato et al.
patent: 4246616 (1981-01-01), Hiraguri et al.
patent: 4267564 (1981-05-01), Flores
patent: 4306255 (1981-12-01), Misaki et al.
patent: 4399473 (1983-08-01), Kaimai et al.
patent: 4463391 (1984-07-01), Takano et al.
patent: 4491878 (1985-01-01), Toba
patent: 4531162 (1985-07-01), Tokumitsu

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