Threading and synchronization system for sound motion picture pr

Details Threading and synchronization system for sound motion picture pr Threading and synchronization system for sound motion picture pr

1975-10-30

1977-03-01

Hayes, Monroe H.

Optics: motion pictures

With loop forming

352 27, G03B 156

Patent

active

040099490

ABSTRACT:
For a sound motion picture projector, an automatic threading and image-sound synchronization system is provided without added moving components. During threading the system establishes for image-sound synchronization the correct image-to-sound spacing of a film having the sound longitudinally spaced along the film from the related image.

REFERENCES:
patent: 2703034 (1955-03-01), Thomas
patent: 3134294 (1964-05-01), Kaden
patent: 3137200 (1964-06-01), Michaels
patent: 3233958 (1966-02-01), Kaess
patent: 3743398 (1973-07-01), Johnson

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