| 摘要 |
<P>PROBLEM TO BE SOLVED: To cause only particular tags or highest level tags to respond, and acquire information only on the tags and also acquire information on the other hierarchies of tags simply and shortly. <P>SOLUTION: A reader/writer device comprises a sensor 92 for exciting semiconductor tags, a reading/writing part 84 for reading/writing data from/to the semiconductor tags, which each have a storage area for a highest level flag and a storage area for hierarchical data and respond to the excitation if the highest level flag is set, and an analysis part 85 for collecting and analyzing the hierarchical data included in highest level tags with the highest level flag set, which are tags that respond to the excitation. <P>COPYRIGHT: (C)2007,JPO&INPIT |
