| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical signal communication apparatus which improves a communication efficiency without requiring a considerable increase of a circuit scale. <P>SOLUTION: An infrared communication apparatus 1 is provided with: a transmitting circuit 4 for converting transmission data to an optical signal and transmitting it to other infrared communication apparatus, a receiving circuit 5 for converting the optical signal received from other infrared communication apparatus to reception data and outputting the data, and a disabling circuit 6 for performing level adjustment to cause an output level from an IV amplifier 5b to be in a non-reception state based on timing of the data transmitted by the transmitting circuit 4 to suppress the operation of the receiving circuit 5 and nullifying the received optical signal. The receiving circuit 5 includes a light receiving element 5a for receiving the optical signal from other infrared communication apparatus and converting it to an electric signal, an IV amplifier 5b for converting a current flowing by light reception of the light receiving element 5a to a voltage, a coupling capacitor 5c for removing a DC component from the IV amplifier 5b, and a comparator 5e for generating reception data based on the output from the coupling capacitor 5c. <P>COPYRIGHT: (C)2010,JPO&INPIT |
