发明名称 |
Apparatus for identifying an article |
摘要 |
An apparatus for identifying an article including an interrogator to enable a tag to be identified, even if the tag is overlapped with another tag or a metal plate. The tag is attached to the article, and a memory for storing data about the article is provided in an RFID element connected to an antenna coil of the tag. The tag is activated by transmitting a radio wave of a frequency with which the tag resonates from a transmitting/receiving antenna of the interrogator. Data is read from the memory in response to a reading command, and data is writing into the memory in response to a writing command from the interrogator. The interrogator also includes an oscillation circuit for sweeping a radio wave transmitted from the transmitting/receiving antenna over a predetermined frequency range. The predetermined frequency range is a frequency range which includes all resonance frequencies of a plurality of the tags that vary based on plurality of overlapped articles to which the tags are attached.
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申请公布号 |
US6346884(B1) |
申请公布日期 |
2002.02.12 |
申请号 |
US20000533935 |
申请日期 |
2000.03.23 |
申请人 |
MITSUBISHI MATERIALS CORPORATION |
发明人 |
UOZUMI GAKUJI;ISHIHARA OSAMU |
分类号 |
H04B5/02;B65D27/00;G06K7/00;H04B1/59;H04B7/26;(IPC1-7):G08B13/14 |
主分类号 |
H04B5/02 |
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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