Patent ID: 6366737
Filing Date: 2002-04-02
Classification: G03B

Abstract:
A flash control system for remotely controlling an external flash device by a camera associated with said external flash device, said system comprising:a stop value calculator, incorporated in said camera, that calculates a stop value as an exposure factor for said external flash device; a light signal source, incorporated in said camera, that emits a light signal; a light signal controller, incorporated in said camera, that controls said light signal source to emit at least two light signals therefrom at a time interval such that said stop value is represented by said time interval between said at least two light signals; a light signal detector, incorporated in said external flash device, that detects said at least two light signals emitted from said light signal source; and a flash-light emission controller, incorporated in said external flash device, that controls an amount of flash-light emission of said external flash device in accordance with said time interval between said at least two light signals.