| 摘要 |
PROBLEM TO BE SOLVED: To radio-communicate with a desired cassette only among a plurality of cassettes. SOLUTION: Since the carrier frequencies of cassette transmitter/receivers 48a-48e mounted on cassettes 24a-24e are different from one another, the radio communication with the desired cassette 24 only among the plurality of cassettes 24a-24e is possible by selecting the carrier frequency of console transmitter/receivers 96a-96e of a console 28 as the carrier frequency of the desired cassette 24e. COPYRIGHT: (C)2009,JPO&INPIT
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