| 摘要 |
PROBLEM TO BE SOLVED: To provide constitution for detection and warning processing for the remaining amount of power of a power supply part on a tag side for an RFID system. SOLUTION: The RFID system detects the remaining amount of power of the tag-side power supply part and gives notice of warning to a reader when the remaining amount is small, and the reader side performs warning display as to the remaining amount of power of the tag. With this constitution, maintenance management for the power source can be performed to enable normal ID output. Further, power source remaining amount detection processing and notification processing are carried out on the basis of induced electric power, so the remaining amount of the power source can be detected and notice of warning can be given without consuming the electric power of the power source in the tag. COPYRIGHT: (C)2006,JPO&NCIPI
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