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:
Mar. 01, 1988
Filed:
Dec. 09, 1986
Akira Takahashi, Kawasaki, JP;
Shinichiro Koshiishi, Hachioji, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A film transport control system in a camera, including a central processing unit programmed to control a film transport motor to transport film for one frame and also to start operating a liquid crystal display unit in response to a signal intermittently generated by a one-frame feed switch actuated in timed relation to movement of the film in the camera. The central processing unit issues a film rewinding failure warning if a predetermined number of signals are not supplied by the one-frame feed switch within a preset period of time from the time when the film starts being rewound. The time when signals are no longer applied by the one-frame feed switch for a predetermined period of time is regarded as a film rewinding completion time by the central processing unit if a predetermined number of signals or more are applied by the one-frame feed switch when the film starts to be rewound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile