Automatic film searching and retrieval system

摘要

An automatic film retrieval system of the type which utilizes film having a plurality of frames, each frame including document images and an adjacent frame marker to facilitate sensing and counting of the frames has an improved film speed drive control circuit which causes the film to be driven at high speed when a desired film frame is greater than a fixed given number of frames away from the actual present frame and at low speed when the desired film frame is less than or equal to a fixed given number of frames away from the actual present frame. The system additionally has an automatic film drive direction control circuit and a stop-go and reset control circuit.