| 摘要 |
PROBLEM TO BE SOLVED: To automatically correct information of a radio tag to be received by an antenna of one gate, even when the information is received by an antenna of the other gate.SOLUTION: The tag information matching device collates ID information read in the first and second radio tag readers having overlapping reading period, to retrieve redundant ID information. The numbers of antennas that have received the redundant ID information are compared between the first radio tag reader and the second radio tag reader, for each redundant ID information, based on antenna identification information associated with each of the redundant ID information, when the redundant ID information is detected. The redundant ID information read by one reader with fewer antennas that have received the redundant ID information is deleted, and the redundant ID information read by the other reader is maintained, in the ID information having been read by the first and second radio tag readers. |
