发明申请
- 专利标题： Payment card signal characterization methods and circuits
- 专利标题（中）： 支付卡信号表征方法和电路
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申请号： US11182358申请日： 2005-07-15
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公开(公告)号： US20060022045A1公开(公告)日： 2006-02-02
- 发明人: Patrick Smets , Eddy Van De Velde , Duncan Garrett
- 申请人： Patrick Smets , Eddy Van De Velde , Duncan Garrett
- 主分类号： G06K7/08
- IPC分类号： G06K7/08
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.
公开/授权文献
- US07422157B2 Payment card signal characterization methods and circuits 公开/授权日：2008-09-09