Techniques to reduce power consumption in near field communication systems

Patent metadata

Field	Value
Publication number	US-11271609-B2
Application number	US-202016822956-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Feb 27, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

Various embodiments are generally directed to techniques communicate in a cellular communication frequency range, detect a resonant signal in response to the communication in the cellular communication frequency range for cellular communication, the resonant signal to indicate presence of a contactless card. Embodiments also include enabling a near-field communication device to send a communication to the contactless card based on the detection of the resonant signal, the near-field communication device to communicate with the contactless card in a near-field communication frequency range.

First claim

What is claimed is:

1. A contactless card, comprising:
a substrate;
a near-field communication (NFC) device coupled with the substrate, the NFC device operable to communicate in an NFC communication range; and
a resonant circuit coupled with the substrate and the NFC device, and the resonant circuit embedded in the substrate and configured to oscillate in response to a signal detected in a cellular frequency range.

2. The contactless card of claim 1 , wherein the resonant circuit comprising an inductor and a capacitor configured to operate as an electrical resonator in response to the signal detected in the cellular frequency range.

3. The contactless card of claim 1 , wherein the resonant circuit is configured to oscillate and emit a resonant signal in response to the signal detected in the cellular frequency range.

4. The contactless card of claim 3 , wherein the resonant signal is detectable by a detection circuit of another device by causing a load on a transceiver or antenna of the other device.

5. The contactless card of claim 4 , wherein the NFC device configured to detect a carrier field and respond by modulating and drawing operating power from another NFC device of the other device.

6. The contactless card of claim 1 , comprising processing circuitry coupled with the NFC device, the processing circuitry configured to communicate messages in the NFC frequency range with other devices.

7. The contactless card of claim 6 , processing circuitry to determine authentication information, payment information, or combination thereof to communicate in the messages.

8. The contactless card of claim 1 , comprising an antenna coupled with the NFC device, and the antenna configured to emit and receive signals in the NFC frequency range.

9. The contactless card of claim 1 , wherein the cellular frequency range comprising one of a 700 Megahertz (MHz), 800 MHz frequency range, a 850 MHz frequency range, a 1,700 MHz frequency range, a 1,900 MHz frequency range, a 2,100 MHz frequency range, a 2,300 MHz frequency range, a 2,500 MHz frequency range, and a 2,600 MHz frequency range.

10. A computer-implemented method, comprising:
oscillating, by a resonant circuit embedded in a substrate of a contactless card, in response to a detection of a signal in a cellular frequency range; and
communicating, by a near-field communication (NFC) device embedded in the substrate and coupled with the resonant circuit, in an NFC frequency range and based on the detection.

11. The computer-implemented method of claim 10 , wherein the resonant circuit comprising an inductor and a capacitor configured to operate as an electrical resonator in response to the signal detected in the cellular frequency range.

12. The computer-implemented method of claim 10 , comprising:
emitting, by the resonant circuit, a resonant signal in response to the signal detected in the cellular frequency range.

13. The computer-implemented method of claim 12 , wherein the resonant signal detectable by a detection circuit of another device by causing a load on a transceiver or antenna of the other device.

14. The computer-implemented method of claim 13 , comprising:
detecting, by the NFC device, a carrier field; and
modulating, by the NFC device, in response to the carrier field; and
drawing, by the NFC device, operating power from another NFC device of another device.

15. The computer-implemented method of claim 10 , comprising communicating, by processing circuitry coupled with the NFC device, one or more messages in the NFC frequency range with another device.

16. The computer-implemented method of claim 15 , comprising determining, by the processing circuitry, authentication information, payment information, or a combination thereof to communicate in the one or more messages.

17. The computer-implemented method of claim 10 , comprising sending and receiving, by the NFC device coupled with an antenna, signals in the NFC frequency range.

18. The computer-implemented method of claim 10 , wherein the cellular frequency range comprising one of a 700 Megahertz (MHz), 800 MHz frequency range, a 850 MHz frequency range, a 1700 MHz frequency range, a 1900 MHz frequency range, a 2100 MHz frequency range, a 2300 MHz frequency range, a 2500 MHz frequency range, and a 2600 MHz frequency range.

Assignees

• Capital One Services Llc

Inventors

• Osborn Kevin
• Wurmfeld David
• Emmott Kevan

Classifications

• H04B5/45

  Transponders · CPC title

• H04B5/266

  One coil at each side, e.g. with primary and secondary coils · CPC title

• G06K19/07773

  Antenna details (antennas for wireless devices, e.g. RFID tags, in general H01Q1/22) · CPC title

• G06K7/0008 Primary

  General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer · CPC title

• G06K19/0723

  the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs · CPC title