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:
Jul. 03, 1984
Filed:
Aug. 13, 1982
Koji Yamamoto, Sakai, JP;
Fumio Yoshida, Kawachinagano, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
The drive force of a motor built in a camera is separately transmitted through respective clutches to a film drive device for one-frame film wind-up and a shutter mechanism for shutter cocking. The film drive mechanism is associated with a detector for detecting completion of the film wind-up operation, while the shutter mechanism is also associated with another detector for detecting completion of the shutter cocking. The detectors generate a 'high' or a 'low' digital signal corresponding to the detections. A discriminating circuit logically determines whether the wind-up operation is completed, according to the timed relationship between the signals, and detects the end of the film being reached when the film wind-up has not been terminated upon detection of the shutter cocking completion. By this detection, motor drive for film wind-up is stopped, subsequent shutter release is forbidden and motor drive for film rewinding is initiated.