Magnetic tape recording and/or reproducing apparatus with slow m

Details Magnetic tape recording and/or reproducing apparatus with slow m Magnetic tape recording and/or reproducing apparatus with slow m

1987-04-24

1989-12-26

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Record editing

358340, 358336, 360 381, H04N 5782

Patent

active

048901695

ABSTRACT:
A magnetically recorded information reproducing apparatus, of a helical scan type, capable of carrying out a slow motion picture reproduction by repeating a still picture reproduction and a normal picture reproduction alternately by means of at least two head assemblies, which are supported for rotation about a common axis, while a length of magnetic tape having video signals recorded thereon is intermittently moved. The apparatus comprises a detecting circuit for detecting a noise position at which the level of the video signal being reproduced decreases to a value lower than a predetermined value. It further comprises a control circuit operable in response to an output signal from the detecting circuit to control the timing, at which interruption of movement of the length of magnetic tape is to be effected, so as to cause the noise position to shift into the period of a vertical synchronizing signal contained in the video signal being reproduced.

REFERENCES:
patent: 4306255 (1981-12-01), Misaki et al.
patent: 4338631 (1982-07-01), Ota
patent: 4531162 (1985-07-01), Tokumitsu
patent: 4639439 (1987-03-01), Tanaka
IEEE Transactions on Consumer Electronics, Publication, vol. CE-26, Feb., 1980, pp. 121 through 128.

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