Patent ID: 6788892
Filing Date: 2004-09-07
Classification: H05B

Abstract:
A strobe light-emission control apparatus comprising:a photoreceptor for outputting a signal that conforms to an amount of received incident light; a strobe light-emission control circuit for controlling a strobe flash device in such a manner that a subject is illuminated with strobe light; a signal accumulation circuit connected to an output terminal of said photoreceptor for accumulating a signal outputted from said photoreceptor; a correct signal generating circuit connected to the output terminal of said photoreceptor for generating a correct signal having a level in accordance with an amount of signal accumulated in said signal accumulation circuit; a subtracting circuit connected to the output terminal of said photoreceptor for subtracting, from a signal that is output from said photoreceptor, a correct signal generated at said correct signal generating circuit; a switch circuit connected between the output terminal of said photoreceptor and said signal accumulation circuit for switching on at an emission of strobe light from the strobe flash device and switching off when strobe light is not emitted from the strobe flash device; an integrating circuit for integrating a signal obtained by subtraction by said subtracting circuit; and a strobe light-emission halt control circuit for controlling the strobe flash device so as to halt emission of strobe light based upon an amount of integration by said integrating circuit.