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:
May. 09, 1995
Filed:
Feb. 03, 1993
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A pre-winding control device of a camera which continues pre-winding from where it left off after a power failure interruption and battery replacement. When a patrone is loaded in the camera, the total number exposures is read from the patrone and the read number of written to an electrically rewritable non-volatile memory E.sup.2 PROM. Subsequently, pre-winding for winding the film from the patrone to a spool is started. For every frame of film wound to the spool, the number of unexposed frames in the patrone is counted down and written to the E.sup.2 PROM. When pre-winding is interrupted due to battery replacement, pre-winding is continued based on the number of unexposed frames stored in non-volatile E.sup.2 PROM.