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. 21, 2002
Filed:
Jun. 23, 2000
Syuji Nose, Asaka, JP;
Michitaka Nakazawa, Asaka, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A power source part supplies power to an electronic flash charging circuit and camera circuits such as an LCD backlight circuit. When the charge begins, the electricity stops being supplied to the camera circuits, and a high current (first charging current) is sent to the electronic flash charging circuit so that the electronic flash is rapidly charged. When the charging voltage of the electronic flash reaches a light-emission-possible voltage that is lower than a full-charge voltage, the charging current is lowered and the charge is continued, and the camera circuits such as the LCD backlight circuit and an imaging circuit start to be activated at the same time. Thus, a decline of the performance of the electronic flash such as a decline of the guide number and a reduction of the light-emission-possible time can be prevented, and the preparation time from the start of the charge to the time at which the camera gets ready for the shooting can be shortened.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile