Payment card signal characterization methods and circuits

Details Payment card signal characterization methods and circuits Payment card signal characterization methods and circuits

G - Physics

06

K

G06K 7/08 (2006.01) G06K 5/00 (2006.01) G06K 19/06 (2006.01)

Patent

CA 2573805

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.

L'invention concerne un lecteur de référence qui permet de tester des cartes de paiement électroniques sans contact dont les transmissions de données sont effectuées au moyen de signaux porteurs RF modulés à faible charge. Ce lecteur de référence comprend une antenne de lecteur et un circuit de rejet de mode commun raccordé. Ledit circuit de rejet de mode commun raccordé est conçu pour démoduler les signaux porteurs reçus au niveau de l'antenne du lecteur afin que soient extraits les signaux de données de carte de paiement présentant de faibles indices de modulation.

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