| 摘要 |
PROBLEM TO BE SOLVED: To obtain a small sized portable telephone set with high added value capable of calling a portable receiver only to which individual identification information has been registered in advance by allowing the portable receiver for displaying an incoming call and designed to be a separate unit from the portable telephone set to receive ratio transmission individual identification information sent from other antenna and to inform the user of the arrival of the incoming call by means of vibration or the like. SOLUTION: A CPU 12 selects a switch 19 to conduct selection diversity by the use of a 1st antenna 17 and a 2nd antenna 18. When a radio wave is received by the 1st antenna 17 or the 2nd antenna 18 and the CPU 12 detects the arrival of an incoming call, the CPU 12 outputs a prescribed ID number (individual identification information) from an internal memory to a very weak radio wave transmission section 20 and uses a flexible antenna (3rd antenna) 5 to send a radio wave. A portable telephone set whose memory registers an ID number corresponding to the transmitted ID number receives the radio wave sent from the flexible antenna 5 and drives a vibrator to inform the user of the arrival of an incoming call through vibration, when the ID numbers match each other.
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