| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly and efficiently read mass information from among a limited storage capacity. <P>SOLUTION: In this radio tag circuit element To having an IC circuit 150 for storing information and an antenna 151 connected to the IC circuit part 150, the IC circuit part 150 is configured to set whether or not a reply signal should be outputted in response to the reception of an unspecific retrieval signal or retrieval signal from a reader 200, and when a signal is received from a reader 300, whether or not the signal is an unspecific retrieval signal or retrieval signal is decided, and whether to output a reply signal to the reader 200 side is switched according to the decision result. Also, access pointer information to another radio tag circuit element To is stored and held. <P>COPYRIGHT: (C)2007,JPO&INPIT |
