| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the quality of a light signal of a light emitter. <P>SOLUTION: The driving circuit of the light emitter has a delay circuit which delays an input signal for driving the light emitter, a rising detecting circuit which detects the rising of the input signal, and a falling detecting circuit which detects the falling of the input signal. Further, the driving circuit has a first filter which provides desired frequency characteristics to an output signal of the rising detecting circuit, a second filter which provides desired frequency characteristics to an output signal of the falling detecting circuit, and an adder which adds the output signals of the delay circuit, the first filter, and the second filter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
