| 摘要 |
PROBLEM TO BE SOLVED: To simply send/receive information by radio waves even when information cannot be sent/received by the infrared ray communication system. SOLUTION: Digital information received/outputted via a bus 23 and an interface section 27 is received/outputted selectively from/to a radio processing section 16 or a data rate conversion section 26 through a changeover switch 25. In this case, a CPU 10 switches at first the changeover switch 25 to a position of the data rate control section 26 and uses an infrared ray port 5 so as to send/receive the digital information by the infrared ray communication system and when the CPU 10 recognizes that the reception/transmission of the digital information by the infrared ray communication system is disable by a reason such as remote distance to a communication destination, the CPU 10 switches the changeover switch 25 to the position of the radio processing section 16 and the digital information is sent/received by using the spread spectrum system. |
