Invention Grant
- Patent Title: Light emission control device including accumulator unit, method of controlling the same, and storage medium, as well as image pickup apparatus
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Application No.: US14848934Application Date: 2015-09-09
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Publication No.: US10070029B2Publication Date: 2018-09-04
- Inventor: Yasutaka Naka
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2014-184134 20140910
- Main IPC: H04N5/225
- IPC: H04N5/225 ; H04N5/235 ; G03B15/05 ; H05B33/08 ; H04N5/232

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.
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