发明名称 |
DETECTION AND SENSING SYSTEM FOR CHANGE IN EXTRINSIC FACTOR |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a detection and sensing system for change in an extrinsic factor capable of grasping environmental change in an article conveniently through the use of a tag. <P>SOLUTION: The system is provided with a noncontact IC tag having a resonance circuit with its resonance frequency set to change due to the change in the extrinsic factor and an IC chip connected to the resonance circuit, and a detector for sensing the output level of the tag within a predetermined frequency range including a predetermined resonance frequency of the IC tag at the occurrence of predetermined change in the extrinsic factor. In addition, the system is provided with a detection reader for reading information of the IC chip to individually identify the IC tag. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
申请公布号 |
JP2005135132(A) |
申请公布日期 |
2005.05.26 |
申请号 |
JP20030369891 |
申请日期 |
2003.10.30 |
申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
TOYOSHI REIO;ARAKI NOBORU;MISHIMA SATOSHI;GOKAMI MASAO |
分类号 |
B42D15/10;G06K17/00;G06K19/00;G06K19/07;(IPC1-7):G06K19/00 |
主分类号 |
B42D15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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