| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination light communication device which requires only an additional simple circuit for communication and is capable of modulating output light with high fidelity according to a high-frequency light communication signal. <P>SOLUTION: An illumination light communication device 10 comprises: a constant current source 11; smoothing capacitors C11 connected to respective outputs of the constant current source 11; a load circuit 12 including a light-emitting diode LD1; a load variable element 13 for partially changing a load characteristic of the load circuit 12 by being added to the load circuit 12; and a switch element Q2 for switching whether or not the load variable element 13 is added to the load circuit 12 according to a two-valued light communication signal S1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
