| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light emitting diode driving circuit capable of comparatively easily controlling, current flowing into a light emitting diode on a current path by using a result of detecting the amount of light emitted from the light emitting diode. <P>SOLUTION: In the LED driving circuit for driving at least one LED, the LED driving circuit is provided with an optical sensing part for receiving light emitted from the LED and generating a feedback signal having a level corresponding to an amount of the received light; and a current-regulating part provided on a path through which current of the LED flows to regulate an amount of current flowing into the LED corresponding to the result of comparing the feedback signal with a first reference signal. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
