Video tape reproducing apparatus capable of preventing influence

Details Video tape reproducing apparatus capable of preventing influence Video tape reproducing apparatus capable of preventing influence

1997-03-20

2000-11-14

Tran, Thai

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 68, 386113, H04N 594

Patent

active

061481378

ABSTRACT:
A noise-bar period detection circuit detects a noise bar period in response to a low-frequency carrier wave FM signal contained in a signal reproduced by a video head when a video tape is reproduced in a special mode so as to output a noise-bar detection signal. A reproduced-signal processing circuit including a clamp circuit, an AGC circuit and the like maintains normal voltage immediately before the noise bar period in response to the noise-bar detection signal output from the noise-bar period detection circuit. Therefore, restoration to a normal state can be performed immediately after the noise bar period.

REFERENCES:
patent: 4531162 (1985-07-01), Tokumitsu
patent: 4594618 (1986-06-01), Kozuki et al.
patent: 5208677 (1993-05-01), Nishimura

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