| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact information recording medium management device for recognizing that an object to be managed by a non-contact IC tag does not exist, and then updating the management information when the field intensity of the non-contact IC tag keeps a constant status for a predetermined period of time or more. <P>SOLUTION: This non-contact IC tag management device 100 is provided with: a non-contact IC tag receiving part 1 configured of an antenna which electrically communicates with a non-contact IC tag 200 (simply described as an IC tag as follows) in a non-contact manner, and reads information (ID information or the like) recorded on the IC tag 200; an object management table part 5 which records the ID information, status and type of the received ID tag 200 and corresponding data and an entry/exit time; a field intensity measuring part 2 which measures and records field intensity in reception by the non-contact IC tag receiving part 1 with the IC tag 200 in a fixed time; a field intensity change measuring part 3 which measures the temporal change of the field intensity recorded by the field intensity measuring part 2; and a data processing part 4 which updates the information of an object management table part 5 for managing the ID information of the IC tag 200 and the the associated information. <P>COPYRIGHT: (C)2007,JPO&INPIT |
