| 摘要 |
PROBLEM TO BE SOLVED: To attain stable infrared communication by performing communication between an infrared communication port that first received a signal among plural infrared communication ports and other equipment, and then invalidating other infrared communication ports. SOLUTION: The signals of other equipment are received by the infrared communication ports 10A to 10C and inputted to a control part 40, and one of these ports that first received the signal is decided. If, for example, it is decided that the port 10A first received the signal and is valid, other ports 10B and 10C are invalidated and the data are continuously outputted to a controller 50, until the communication is finished. When the communication is finished, the ports 10B and 10C are reset. Thus, one of ports from among 10A to 10C that first received the signal performs the communication with the infrared communication ports 10 of other equipment. Then other ports 10B and 10C are invalidated, and the data received by the port 10A that first received the signal are printed out. As a result, no communication error occurs, even if other ports receive different signals. |
