发明名称 |
Electromagnetic transponder read terminal operating in very close coupling |
摘要 |
A terminal for generating an electromagnetic field adapted to cooperating with at least one transponder when the latter enters its field, the terminal including an oscillating circuit adapted to receiving a high frequency A.C. excitation voltage, and circuitry for detuning this oscillating circuit with respect to a determined transmission frequency when a transponder is very close to the terminal.
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申请公布号 |
US6650229(B1) |
申请公布日期 |
2003.11.18 |
申请号 |
US20000543249 |
申请日期 |
2000.04.05 |
申请人 |
STMICROELECTRONICS S.A. |
发明人 |
WUIDART LUC;BARDOUILLET MICHEL;ENGUENT JEAN-PIERRE |
分类号 |
G06K19/07;G06K7/00;G06K17/00;H02J17/00;H04B1/59;H04B5/02;(IPC1-7):H04Q5/22 |
主分类号 |
G06K19/07 |
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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