Patent ID: 6249648
Filing Date: 2001-06-19
Classification: G03B

Abstract:
Camera flash apparatus and optical data recording circuit combination for a camera having a battery power source, the combination comprising:a flash charging circuit coupled to said battery power source, the charging circuit having a self-oscillating circuit and a step-up transformer and having first and second charge voltage output terminals;a flash illumination circuit including a flash capacitor and a resistor element connected in circuit across said first and second charge voltage output terminals and including a flash synchronization switch coupled to said self-oscillating circuit to initiate self-oscillation upon closure of the switch; andan optical data recording circuit, including an illumination device for recording data on film in the camera, said illumination device being connected to said resistor element to be energized by voltage across said resistor element resulting from charging current through said flash capacitor when said flash charging circuit is turned on by closure of said flash synchronization switch.