Synchronization system of the cine-projector with the sound tape

Details Synchronization system of the cine-projector with the sound tape Synchronization system of the cine-projector with the sound tape

1976-03-16

1978-01-03

Hayes, Monroe H.

Optics: motion pictures

With sound accompaniment

Picture and sound synchronizing

352 14, 352 17, 352 31, G03B 3100

Patent

active

040669637

ABSTRACT:
The present invention relates to a synchronization system of a cine-projector with a sound tape reproducer. It is characterized in that the phase of a signal corresponding to the film feeding speed of the film projector and that of a signal corresponding to the standard speed coming from the sound tape reproducer are compared with each other so as to control the film feeding speed of the cine-projector by means of the comparison output corresponding to the phase difference. In order to accomplish this, between the driving source for driving the internal mechanism of the cine-projector and the driving member for the internal mechanism, a transmission speed varying mechanism is provided in such a manner that the transmission speed varying mechanism is controlled by means of the film speed control driving source to be driven by the comparison output so as to maintain the synchronized state.

REFERENCES:
patent: 3244469 (1966-04-01), Hennessey
patent: 3588558 (1971-06-01), Levin
patent: 3597056 (1971-08-01), Sasaki
patent: 3694060 (1972-09-01), Tadie
patent: 3900251 (1975-08-01), Doyle
patent: 3901590 (1975-08-01), Ashida

Affiliated with

Also associated with

Rating

Synchronization system of the cine-projector with the sound tape does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synchronization system of the cine-projector with the sound tape, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronization system of the cine-projector with the sound tape will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-283145