Image reproducing apparatus capable of eliminating vertical wobb

Details Image reproducing apparatus capable of eliminating vertical wobb Image reproducing apparatus capable of eliminating vertical wobb

1996-06-20

1997-08-05

Tran, Thai

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 85, 360 63, 360 64, H04N 576, H04N 592

Patent

active

056550480

ABSTRACT:
A first head changeover signal generation circuit generates a first head changeover signal to be used for switching between first heads and between second heads. A second head changeover signal generation circuit generates a second head changeover signal to be used for switching between the pair of first heads and the pair of second heads. A head amplifier selects one of FM field signals reproduced by the first and second heads in accordance with the first and second head changeover signals, and a FM detection circuit converts the selected FM signal into a video signal. A pseudo vertical sync signal generation circuit generates a pseudo vertical sync signal in accordance with the first and second head changeover signals. A switch selects, in accordance with the second head changeover signal, one of the as-produced pseudo vertical sync signal and a delayed pseudo vertical sync signal delayed by a variable delay circuit. The selected pseudo vertical sync signal is added to the video signal. A FM signal recorded on the same recording track is reproduced, for instance, three times by the first head and the second head by one field for each head.

REFERENCES:
patent: 4858030 (1989-08-01), Oku et al.
patent: 5179477 (1993-01-01), Kokama
patent: 5191434 (1993-03-01), Kim
patent: 5461487 (1995-10-01), Asakura

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