METHOD AND SOLUTION OF DATA TRANSMISSION FROM THE TRANSPONDER TO THE READER, ESPECIALLY IN PAYMENT SOLUTIONS WITH A MOBILE COMMUNICATION DEVICE

• US 20110238518A1
• Filed: 09/30/2010
• Published: 09/29/2011
• Est. Priority Date: 11/14/2009
• Status: Active Grant

• Current Assignee: SMK Corporation
• Original Assignee: Logomotion, S.R.O.
• Inventors: Florek, Miroslav
• Granted Patent: US 9,742,468 B2
• Time in Patent Office: Days
• US Class Current: 705/26.1
• CPC Class Codes: G06K 19/07732 the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks housings for electrical equipment in general, see H05K5/02
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06Q 30/0601 Electronic shopping [e-shopping]
• CPC Class Codes: H04B 5/0031 for data transfer
• CPC Class Codes: H04B 5/0093 with one coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/72 for local intradevice communication

Abstract

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.

Claims

1-15. -15. (canceled)

16. A method for transmitting data from a transmitter to a receiver, the transmitter having a transmitter antenna and the receiver having a receiver antenna, the method comprising:

the receiver transmitting a carrier signal at a carrier frequency;

the transmitter transmitting a transmitter signal at a transmitter transmission frequency, wherein the transmitter transmission frequency is different from the carrier frequency, and the difference between the transmitter transmission frequency and the carrier frequency defines a subcarrier frequency;

the transmitter modulating the data on the transmitter signal; and

the receiver receiving a received signal that is created by combining the carrier signal with the modulated transmitter signal, and demodulating the received signal as a combined signal having the carrier frequency and a modulated subcarrier frequency that is modulated with received data,

wherein the received signal is created only via mutual antenna induction and without the transmitter transmitting a signal at the subcarrier frequency.

17. The method of claim 16, wherein the transmitter modulates the data on the transmitter signal by changing a transmitter frequency signal phase.

18. The method of claim 16, wherein the carrier signal has a frequency of 13.56 MHz±

7 kHz, and the difference between the carrier frequency and the transmitter transmission frequency is defined relative to the carrier frequency.

19. The method of claim 16, wherein the transmitter antenna is tuned to a transmission frequency of the transmitter, independent of transmission characteristics associated with the transmitter antenna for subcarrier frequency.

20. The method of claim 16, wherein the transmitter is in the form of a transponder and the receiver is formed by a reader on an RFID and/or NFC platform.

21. The method of claim 16, wherein the transmitter is located in a mobile communication device.

22. The method of claim 16, wherein the transmitter is located on a removable memory card that is adapted to be received into a slot in a mobile communication device.

23. The method of claim 16, wherein the data are associated with a payment via a mobile communication device.

24. A method for transmitting data from a transmitter to a receiver, the transmitter having a transmitter antenna and the receiver having a receiver antenna, the method comprising:

the receiver transmitting a carrier signal at a carrier frequency;

the transmitter transmitting a transmitter signal at a transmitter transmission frequency, wherein the transmitter transmission frequency is different from the carrier frequency, and the difference between the transmitter transmission frequency and the carrier frequency defines a subcarrier frequency;

the transmitter modulating the data on the transmitter signal; and

combining the carrier signal and the modulated transmitter signal in an antenna system of the receiver and the transmitter to form a combined signal;

the receiver receiving the combined signal, and demodulating the received combined signal by separating the carrier signal from the combined signal to form a modulated subcarrier signal, and demodulating the transmitted data from the modulated subcarrier signal.

25. The method of claim 24, wherein the transmitter modulates the data on the transmitter signal by changing a transmitter frequency signal phase.

26. The method of claim 24, wherein the carrier signal has a frequency of 13.56 MHz±

7 kHz, and the difference between the carrier frequency and the transmitter transmission frequency is defined relative to the carrier frequency.

27. The method of claim 24, wherein the transmitter antenna is tuned to a transmission frequency of the transmitter, independent of transmission characteristics associated with the transmitter antenna for subcarrier frequency.

28. The method of claim 24, wherein the transmitter is in the form of a transponder and the receiver is formed by a reader on an RFID and/or NFC platform.

29. The method of claim 24, wherein the transmitter is located in a mobile communication device.

30. The method of claim 24, wherein the transmitter is located on a removable memory card that is adapted to be received into a slot in a mobile communication device.

31. The method of claim 24, wherein the data are associated with a payment via a mobile communication device.

32. A transmitter for transmitting data to a receiver, the receiver having a receiver antenna and transmitting at a carrier frequency, the transmitter comprising:

a transmitter antenna; and

a modulation element comprising an electromagnetic wave generator operating at a frequency that is different from the carrier frequency,

wherein the electromagnetic wave generator is connected to energize the transmitter antenna when transmitting data over a transformer connection of mutual induction between the transmitter antenna and the receiver antenna.

33. The transmitter of claim 32, wherein the transmitter antenna is tuned to a transmission frequency of the transmitter, independent of transmission characteristics associated with the transmitter antenna for a subcarrier frequency expected by the receiver.

34. The transmitter of claim 32, wherein the transmitter is located on a removable memory card that is adapted to be received into a slot in a mobile communication device.

35. A receiver for receiving data transmitted from a transmitter, the transmitter having a transmitter antenna and transmitting a modulated transmitter signal at a transmitter transmission frequency, the receiver comprising:

a receiver antenna; and

a demodulation element that is connected to a turning of an induction of the transmitter antenna toward a sensor resistor via an inductor,

wherein the receiver transmits a carrier signal at a carrier frequency, receives a received signal that is created by combining the carrier signal with the modulated transmitter signal, and demodulates the received signal as a combined signal having the carrier frequency and a modulated subcarrier frequency that is modulated with received data,

wherein the received signal is created only via mutual antenna induction and without the transmitter transmitting a signal at the subcarrier frequency.