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:
Sep. 04, 2018
Filed:
Sep. 09, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Yasutaka Naka, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A light emission control device capable of preventing an increase in time required to shut down an image pickup apparatus when powering it off and preventing degradation of the durability of an accumulator unit. A light emission control device of a camera controls light emission of an LED that illuminates an object in photographing by supplying electric current from a capacitor. A charge controller controls the charge voltage of the capacitor to a first voltage threshold value for photographing. When the camera is shifted to a predetermined state except photographing, the charge controller controls the charge voltage to a second voltage threshold value which is lower than the first voltage threshold value by causing electric charges to be discharged from the capacitor.