Apparatus for playing video signal recording medium

Details Apparatus for playing video signal recording medium Apparatus for playing video signal recording medium

1991-02-06

1992-11-03

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

358312, 358314, H04N 594, H04N 987

Patent

active

051610337

ABSTRACT:
A video signal recording medium playing apparatus having a field memory is disclosed. When switching from a special reproducing mode to a noise reducing mode, a phase difference between a reference vertical sync signal and a read vertical sync signal is detected and a period of the reference vertical sync signal is increased or decreased. When the phase differences coincide, the mode switching is performed, thereby preventing a fluctuation of an image upon mode switching.

REFERENCES:
patent: 4577237 (1986-03-01), Collins
patent: 4635134 (1987-01-01), Sasamura et al.
patent: 4814897 (1989-03-01), Kojima et al.

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