| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication device capable of performing high-speed and good optical communication in communicating by using light from an LED provided with a phosphor. <P>SOLUTION: The communication device is provided with the LED 1 provided with the phosphor, a modulation means 2 for modulating transmitted data into a modulation signal, a drive means 3 for driving the LED 1 by adding a predetermined reference signal to the modulation signal from the modulation means 2, a light receiving means 4 for receiving light from the LED 1, and a demodulation means 5 for detecting the predetermined reference signal from an output signal from the light receiving means 4, and demodulating the modulation signal from the output signal from the light receiving means 4 by using the detected predetermined reference signal as a reference of a time axis. <P>COPYRIGHT: (C)2009,JPO&INPIT |
