发明名称 |
Payment card signal characterization methods and circuits |
摘要 |
A reference reader is provided for testing contactless electronic payment cards whose data transmissions are via weak load modulated RF carrier signals. The reference reader includes a reader antenna and a coupled common mode rejection circuit. The common mode rejection circuit is configured to demodulate carrier signals received at the reader antenna to retrieve payment card data signals having low modulation indices.
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申请公布号 |
US2006022045(A1) |
申请公布日期 |
2006.02.02 |
申请号 |
US20050182358 |
申请日期 |
2005.07.15 |
申请人 |
SMETS PATRICK;VAN DE VELDE EDDY L H;GARRETT DUNCAN |
发明人 |
SMETS PATRICK;VAN DE VELDE EDDY L.H.;GARRETT DUNCAN |
分类号 |
G06K7/08;G06Q20/32;G06Q20/34 |
主分类号 |
G06K7/08 |
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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