Camera with optical film metering and image frame data encodement
AssigneeEastman Kodak Company
InventorsJeffrey R. Stoneham, John H. Minnick
Life of this patent
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Abstract
Film encodement method and apparatus for optically encoding image frame format information on the film in a camera adapted to receive film having film metering perforations along one side of the film which are spaced apart by the length of film frame areas on the film. Data representing a desired frame format for the resultant photoprint is optically encoded on the film between the spaced apart perforations by the same perforation sensor LED, operative in the visible light spectral region, as is used to perform film metering in the camera.
Claims9
Film encodement apparatus for a photographic camera adapted to receive film having perforations along a side thereof which are spaced apart by an amount sufficient to define successive image frame areas along the length of the film, said apparatus comprising:
- sensing means including a light emitter operative in the visible light spectrum for sensing said film perforations to meter positioning of said film in the camera;
- and
- control means operative during first intervals to activate said light emitter for sensing of said perforations and operative during second intervals distinct from said first intervals for controlling activation of said light emitter to expose said film with predetermined film encodement data in a path aligned with said perforations.
A method of optically exposing encodement data onto film in a camera of the type having optical perforation sensing means including a light emitter operative to emit light in the visible light spectrum, the method comprising:
- exposing said encodement data on the film with said perforation sensing light emitter during an interval of film advancement not used for perforation sensing.
A method of operating a photographic camera of the type adapted to receive film having perforations along a side thereof which are spaced apart by an amount sufficient to define successive image frame areas along the length of the film, the method comprising:
- advancing said film in the camera between successive image frame areas
- sensing said perforations during said film advancement with a light emitter emitting light in the visible spectrum;
- and
- exposing said encodement data on the film with said perforation sensing light emitter during an interval of film advancement not used for perforation sensing.
Dependencies are inferred from the claim text.