| 摘要 |
PROBLEM TO BE SOLVED: To enable to easily replace any one of a master set or a slave set without requiring a dedicated connector or a complicated operation. SOLUTION: A radio ID tag 23 for performing short-distance radio communication is provided on a slave set 2, and a tag I/F section 13 for receiving an authentication code notified by short-distance radio communication from the radio ID tag 23 of the slave set 2 is provided on the master set 1. A master set control section 19 compares the authentication code received by the tag I/F section 13 with the authentication code notified in a slave set registration request from the slave set 2, and determines the propriety of the slave set registration request depending on a result of comparison. COPYRIGHT: (C)2007,JPO&INPIT
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