发明名称 LIGHT EMISSION CONTROL DEVICE INCLUDING ACCUMULATOR UNIT, METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM, AS WELL AS IMAGE PICKUP APPARATUS
摘要 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.
申请公布号 US2016073026(A1) 申请公布日期 2016.03.10
申请号 US201514848934 申请日期 2015.09.09
申请人 CANON KABUSHIKI KAISHA 发明人 Naka Yasutaka
分类号 H04N5/232;H05B33/08;H04N5/225;G03B15/05 主分类号 H04N5/232
代理机构 代理人
主权项 1. A light emission control device that selectively controls light emission of a light emitting section when photographing, comprising: an accumulator unit configured to accumulate electric charges so as to supply electric current to the light emitting section; a charge control unit configured to perform charge control for controlling a charge voltage of said accumulator unit to a first voltage threshold value for causing the light emitting section to emit light; a light emission control unit configured to control light emission of the light emitting section in photographing, by supplying electric current from said accumulator unit of which the charge voltage is controlled to the first voltage threshold value, to the light emitting section; and a discharge control unit configured to control, when shifting the light emitting section to a predetermined state except the photographing, 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 said accumulator unit.
地址 Tokyo JP