| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform reading or writing of information only to an intended radio tag circuit element with a simple structure and an easy method without requiring means such as construction of a shield environment, reduction in output, or identification communication even in case of using a high frequency wave such as UHF band. <P>SOLUTION: This device comprises a first roll 102 adapted to store a plurality of radio tag circuit elements To and successively take out them; a high frequency circuit 21 for generating access information for accessing radio tag information; a directional antenna 14 for transmitting the generated access information to a tag-side antenna 152; a main carrying guide 13 for holding the radio tag circuit elements To successively taken out of the first roll 102 in a predetermined access area; and a shield plate 60. The main carrying guide 13 is arranged on the directivity side of the directional antenna 14, and the shield plate is arranged on the directivity side beyond the main carrying guide 13, and the first roll 102 is arranged on the directivity side beyond the shield plate 60. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
