CONTROL SIGNAL GENERATING DEVICE AND AUDIO SIGNAL PROCESSING DEVICE

摘要

A control signal for controlling a light emitting element is generated according to a set value of an amount of light emission. In this event, each of a current value and a duty ratio of the control signal changes according to the set value of the amount of light emission. Further, it is preferable that each of the current value and the duty ratio changes according to the set value when the set value of the amount of light emission is less than a predetermined threshold value, and the current value changes according to the set value whereas the duty ratio is constant when the set value of the amount of light emission is greater than the predetermined threshold value.

主权项

1. A control signal generating device, comprising
a generator that generates a control signal for controlling a light emitting element according to a present value of one parameter specifying an amount of light emission of the light emitting element, wherein the control signal generated by the generator has a current value and a duty ratio each of which changes according to the present value of the parameter.