Automatic retrieval apparatus

Details Automatic retrieval apparatus Automatic retrieval apparatus

1981-06-02

1984-06-26

Chin, Gary

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Position determining

377 53, 353 26A, 355 41, 250557, G03B 2312

Patent

active

044570082

ABSTRACT:
An automatic retrieval apparatus for use with an information containing film in a roll form, arranged to control driving of the information containing film by reading document marks or blips provided in the information containing film to correspond with respective frames. The retrieval apparatus includes a detecting circuitry for detecting the document marks to produce detecting signal, a latch circuitry to be set by impression of the detecting signal to it, and a calculation processing circuitry which effects predetermined calculation corresponding to the detection of the document marks when the latch circuitry is in the set state, and which produces signal for resetting the latch circuitry upon completion of the calculation processing.

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