Feed device for motion picture film and device for detecting abn

Details Feed device for motion picture film and device for detecting abn Feed device for motion picture film and device for detecting abn

1995-12-08

1997-09-30

Adams, Russell E.

Optics: motion pictures

Combined with diverse-type device

352166, 352244, 356443, 25055902, G03B 2900

Patent

active

056730985

ABSTRACT:
A controller uses image processing to detect any abnormalities in the shape and distance of the perforations of a motion picture film by means of image data obtained upon imaging the perforations of the running motion picture film by a video camera in a sensor unit arranged in the film running path. If any abnormalities are detected in the perforations in the motion picture film running in the film running path, an error output specifying such abnormalities is fed to a system controller that operates to stop the film drive system including stopping the intermittent film feed at the optical film gate and extinguishing the light source illuminating the film.

REFERENCES:
patent: 2641956 (1953-06-01), Morrison et al.
patent: 3856414 (1974-12-01), Menary
patent: 4652124 (1987-03-01), Bowen et al.
patent: 4652125 (1987-03-01), Bowen et al.
patent: 4683380 (1987-07-01), Shipkowski et al.
patent: 5107127 (1992-04-01), Stevens

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