Sound motion picture camera

Details Sound motion picture camera Sound motion picture camera

1979-08-31

1982-03-09

Hayes, Monroe H.

Optics: motion pictures

With sound accompaniment

Picture and sound synchronizing

352 22, G03B 3100

Patent

active

043185967

ABSTRACT:
In the camera disclosed, the film loop between the film drive at an exposure aperture and the film drive at a sound recording station is sensed and the film is prevented from jamming by having a drive unit operate a film drive motor at the exposure aperture and a capstan motor at the sound recording station operate simultaneously only when the film loop is sufficiently small to prevent jamming, but by operating only the capstan motor, and delaying the film motor when the loop is too long.

REFERENCES:
patent: 2982172 (1961-05-01), Berkenhoff
patent: 4000496 (1976-12-01), Beaulieu

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