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US 11,694,053 B2Granted
Method and apparatus for transmitting data via NFC for mobile applications including mobile payments and ticketing
AssigneeiCashe, Inc.
InventorsSiva G. Narendra, Saurav Chakraborty, Prabhakar Tadepalli
Life of this patent
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Abstract
A mobile device includes a smartcard controller that does not rely on power received from an interrogating RF field. The mobile device also includes a small inductive device capable of inductive coupling with an RFID reader. The smartcard controller includes circuitry to modulate an impedance of a port coupled to the inductive element when in the presence of an interrogating RF field at substantially 13.56 MHz.
Claims20
A mobile device comprising:
- a power source;
- a smartcard controller coupled to the power source to receive power;
- an antenna tuned to operate at substantially 13.56 MHz, wherein the antenna interacts with a Near Field Communication (NFC) reader external to the mobile device;
- and
- an active transmit driver circuit coupled to the power source to receive the power, wherein the active transmit driver circuit affects transmission of data between the antenna and the NFC reader.
2 more elements
A method of activation, the method comprising:
- receiving a first communication via a network including a request for activation;
- and
- sending a second communication to a mobile device via a network, wherein the second communication comprises an activation code provided in response to the request for activation, wherein verification of the activation code results in activation of a built-in RFID functionality in the mobile device, wherein the mobile device comprises:
- a smartcard controller to provide the built-in RFID functionality and coupled to receive power from the mobile device;
- an antenna tuned to operate at substantially 13.56 MHz;
- and
- an active transmit driver circuit coupled to receive power from the mobile device, and wherein the activated built-in RFID functionality comprises transmission of data between the antenna and an external RFID reader, the transmission effected by the active transmit driver circuit.
4 more elements
A method of near field communication between a mobile device and an NFC reader, the method comprising:
- coupling a smartcard controller and an active transmit driver circuit to a power source of the mobile device;
- providing power to the smartcard controller and the active transmit driver circuit from the power source of the mobile device;
- coupling the active transmit driver circuit to an antenna of the mobile device, wherein the antenna is tuned to operate at substantially 13.56 MHz;
- and
- driving transmission of data by the active transmit driver circuit from the antenna to the NFC reader.
2 more elements
Dependencies are inferred from the claim text.