Picture frame number discriminating method and apparatus therefor
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United States of America Patent
Stats
-
Apr 17, 1990
Grant Date -
N/A
app pub date -
Oct 17, 1988
filing date -
Oct 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A photographic film is printed with numerical frame numbers and corresponding coded frame number bar codes. When a sensor completely reads a frame number bar code, a transportation quantity measuring unit starts measuring the transportation of the film to obtain a distance between the center of the film mask and the read frame number bar code or the associated frame number. The number of frames between the distance is obtained through division of the obtained distance by the pitch between frame number bar codes or frame numbers. A frame number of a frame positioned at the film mask is discriminated based on the obtained number of frames and the read frame number.
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