Patent ID: 8786214
Filing Date: 2014-07-22
Classification: H05B

Abstract:
1. A light emitting element drive device, comprising: a power input line to which electric power is supplied; an electric conduction switch that is provided along the power input line; a voltage detection unit that detects a power source voltage containing a noise component when the electric power is supplied to the power input line; a conversion processing unit that converts the detected power source voltage containing the noise component to a digital value; a data generation unit that generates data of a predetermined number of bits; and a control unit that turns ON the electric conduction switch, wherein the control unit determines a delay time based on the predetermined number of bits of the data, and the delay time corresponds to a time between supplying the electric power to the power input line and turning ON the electric conduction switch, and the control unit turns ON the electric conduction switch after the delay time passes.