| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently read identification information from a radio tag by preventing the generation of non-sensitive region where identification information of a radio tag cannot be read, and fully spreading the radio wave emitted from an antenna over the inside of an accommodating box. <P>SOLUTION: In a radio tag reading system, the accommodating box 3 for accommodating a distribution object 1 provided with the radio tags 2 storing identification information is placed on a placing table 9, and the identification of each radio tag 2 in the accommodating box 3 is read using the antenna of an antenna unit 10 disposed in the placing table 9. In this system, radio interference in which the radio wave emitted from the antenna is canceled by a reflection radio wave due to a radio wave reflected on the inner side face of the top face at the time of placing the accommodating box on the placing table 9 is prevented by providing a minute uneven portion 6 having a minute shape on the inner side face of a box lid 5 of the accommodating box 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
