| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact IC medium 23 usable for a plurality of purposes. <P>SOLUTION: The non-contact IC medium 23 comprising a loop antenna 22 for non-contact communication, and IC chips 21 for control operation, is mounted with a plurality of IC chips 21. IC chips different in operation frequency are adopted as the plurality of IC chips 21a, 21b. As one embodiment, the loop antenna 22 is composed of a shared loop antenna 22 shared by the plurality of IC chips 21. As another embodiment, individual loop antennas 22a, 22b are connected to the plurality of IC chips 21a, 21b, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT |
