| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve a working efficiency of detecting a desired article while shortening time required for one search cycle. <P>SOLUTION: In a storage part, a plurality of antennas for conducting communication with a radio tag given to the article, are arranged. The antennas are grouped into two or more groups, and the communication is conducted with the radio tag by switching the antennas with the group as a unit. When there is the radio tag with identification information of the radio tag given to the article to be searched in the radio tags in communication by the antennas switched with the group as the unit, the antennas belonging to the group are switched individually to be communicated with the radio tag. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
