| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a physical distribution management system protecting information stored in a noncontact tag, without complication in circuit configuration. <P>SOLUTION: Each of reader writers 30-1 to 30-5 comprises: a request means (control circuit 30e) performing a readout request with respect to the noncontact tag 40; and an instruction means (control circuit 30e) newly adding unique information with respect to the information at distribution bases where the reader writer are arranged, and supplying it to the noncontact tag to instruct to write back the information. The noncontact tag comprises: a destructive reading type memory (FeRAM 40g) storing the information; a transmission means (modulation circuit 40c) reading the information out of the destructive reading type memory and transmitting the information; and a write back means (control circuit 40f) receiving the information from the reader writer and writing back the information, when the write-back instruction of the information transmitted by the transmission means is executed. <P>COPYRIGHT: (C)2009,JPO&INPIT |
