Device for reading positional information on photographic films

Details Device for reading positional information on photographic films Device for reading positional information on photographic films

1989-04-14

1990-10-02

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 77, 355 38, 235462, G03B 2752

Patent

active

049610864

ABSTRACT:
A device for reading positional information on photographic films used for reading, when a photographic film is being fed, pieces of positional information provided on the film in a predetermined order and in correspondence with a plurality of image frames recorded on the film in the longitudinal direction thereof. The device is designed to determine whether or not any piece of positional information read has been erroneously read; when it is determined to have been erroneously read, the device selects the correct image frame on the basis of those pieces of positional information for image frames which are adjacent to that piece of positional information determined to have been erroneously read. Thus, even if an error has occurred in the reading of positional information, the subsequent processes need not be interrupted.

REFERENCES:
patent: 4414468 (1983-11-01), Laurer et al.
patent: 4707120 (1982-11-01), Yamamoto
patent: 4797713 (1989-01-01), Terashita et al.

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