MOBILE CAMERA APPARATUS WITH VARIABLE FLASH

摘要

A mobile camera apparatus equipped with a variable flash is provided to secure proper flash light quantity in indoor environment and to acquire photographs with uniform brightness in general environment. A mobile camera apparatus comprises an image sensor unit(100), a flash control unit(200), a PWM/electric current converting unit(300) and a variable flash(400). The image sensor unit generates an AGC signal(Vagc) for controlling the size of an image signal automatically. The flash control unit converts the AGC signal of the image sensor unit into a PWM signal. The PWM/electric current converting unit converts the PWM signal of the flash control unit into driving current. The flash generates light according to the size of the driving current from the PWM/electric current converting unit.