Memory controlled motion picture apparatus

Details Memory controlled motion picture apparatus Memory controlled motion picture apparatus

1981-08-19

1983-03-29

Gellner, Michael L.

Optics: motion pictures

Methods

Exhibiting

352169, G03B 118, G03B 2138

Patent

active

043781489

ABSTRACT:
A motion picture apparatus and preferably a motion picture projector. A rotary disc shutter is actuated by an electric drive and comprises a shutter sector. A claw mechanism controlled by the electric drive provides for transport of a film and the motion of the film is controlled by a solenoid having associated a solenoid plunger suitable for disengaging the claw transport mechanism after a frame transport phase. A position pulse generator provides a shutter position pulse depending on the position of the shutter sector. An output memory element connected to the electromagnet solenoid controls the energization of the electromagnet and in turn is connected to a switch and to the position pulse generator. Preferably additional memories are provided for performing functions such as controlling the advance and the reverse motion or providing for a timer or individual frame operation.

REFERENCES:
patent: 3888780 (1975-06-01), Tucker
patent: 4096500 (1978-06-01), Lermann et al.

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