Method and system for simulating a proximity-based transaction device
US8442796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2008 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10465
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.