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The method and solution of data transmission from the transponder to the reader, especially in payment solutions with a mobile communication device
The method and solution of data transmission from the transponder to the reader, especially in payment solutions with a mobile communication device
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机译:从应答器到读取器的数据传输方法和解决方案,尤其是在具有移动通信设备的支付解决方案中
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摘要
The method and solution can be mainly used for data transmission in cashless payment applications, especially those realized from the mobile phone while using RFID and/or NFC platform. The signals with different frequency are combined in antenna system (M) of the receiver (1) and transmitter (2) and then the carrier signal is separated from the result of the combined signals and the transmitted data are demodulated. The difference between the frequencies has a value, that corresponds to the size of the subcarrier frequency to which the receiver (1) is preset. During transmission the transformer connection coefficient can have the value k = 0,2 - 0,001, while the antenna (3) of the receiver (2) is tuned narrowly to the transmitter's (2) frequency without considering the subcarrier frequency. The transmitter is preferably located on a memory card or on a card with a format and interface of a memory card, e.g. micro SD.
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