The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Dec. 05, 1989
Michael L Wash, Pittsford, NY (US);
Eastman Kodak Company, Rochester, NY (US);
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. All data is recorded as N-bit character where N is preferably six. Each track is preceeded by certain six-bit character called an ID sentinel. On-film magnetic data recording by the film manufacturer uses an ID sentinel different from that employed in the camera. The camera automatically prevents exposure of any frame bearing a camera ID sentinel, thus providing protection from double exposures.