发明名称 |
METHOD AND SYSTEM FOR SIMULATING A PROXIMITY-BASED TRANSACTION DEVICE |
摘要 |
A system and method for testing and calibrating electronic contactless payment devices including reference payment cards and readers. The contactless payment devices transmit data by load modulating a subcarrier of an RF carrier signal. The system and method involve use of a common mode rejection (CMR) circuit to demodulate a received load-modulated data signal and to extract the data signal. The CMR circuit also generates a synchronous clock signal, a sample & hold signal and a sample & hold clock signal. Further, the input signal is feed to a zero-crossing detector and digital delay which in combination with an Analog-to-Digital Converter circuit is used to recreate the load (i.e. modulating) signal and to eliminate the large carrier portion of the selected input signal.
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申请公布号 |
US2010318315(A1) |
申请公布日期 |
2010.12.16 |
申请号 |
US20080668179 |
申请日期 |
2008.07.07 |
申请人 |
SMETS PATRIK;VAN DE VELDE EDDY LODEWIJK HORTENSIA;GARRETT DUNCAN;ROBERTS DAVID ANTHONY |
发明人 |
SMETS PATRIK;VAN DE VELDE EDDY LODEWIJK HORTENSIA;GARRETT DUNCAN;ROBERTS DAVID ANTHONY |
分类号 |
G01M99/00 |
主分类号 |
G01M99/00 |
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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