G - Physics – 11 – B
Patent
G - Physics
11
B
95/61, 352/10.1
G11B 23/44 (2006.01) G03B 17/24 (2006.01) G03D 15/00 (2006.01)
Patent
CA 1314099
-0- SELF-CLOCKING ENCODING/DECODING FILM INFORMATION EXCHANGE SYSTEM USING DEDICATED MAGNETIC TRACKS ON FILM ABSTRACT A virtually transparent magnetic layer is included as an additional layer in a color negative film. Information exchange between various users of the film--such as (for example) the film manufacturer, the camera user, the dealer and photofinisher--is carried via plural longitudinal magnetic tracks on the film that begin and end in individual frames. Each track is dedicated to the writing and reading of a predetermined set of parameters related to the corresponding frame. The photofinisher-dedicated tracks fill the exposed image area of each frame. The camera-dedicated tracks lie along the edges of the film between the film perforations, the perforations being widely spaced for the purpose. All data is recorded on the film using a novel self-clocking code which is completely self-clocking, in order to provide automatic data synchronization between the various users without requiring that any of them to transport the film at the same speed or even at a uniform speed when reading and writing.
612939
Wash Michael Lee
Whitfield Arthur Allan
Eastman Kodak Company
Gowling Lafleur Henderson Llp
LandOfFree
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