| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an RFID system that can reduce the power consumption of tags even if a reading device transmits an inquiry signal including a plurality of tag IDs. <P>SOLUTION: A BCC generation part 234 of the reading device 200 generates BCCs for respective tag IDs, and a data synthesis part 232 matches the tag IDs with the corresponding BCCs to generate transmission data. In the receiving active RFID tag 100, a BCC check part 164 BCC-checks every received ID and BCC, and if the result is OK, a data interpretation part 162 extracts the ID to compare it with a tag ID retrieved from a memory 120. If the received ID matches the tag ID retrieved from the memory 120, a reception part 190 and a data decoding part 160 are disabled, and a data generation part 150 generates transmission data including the tag ID retrieved from the memory 120. The active RFID tag 100 is switched to an idle mode after transmitting the transmission data. <P>COPYRIGHT: (C)2008,JPO&INPIT |
