Using the NFC field from a phone to power card to phone bluetooth communications

Patent metadata

Field	Value
Publication number	US-12519345-B2
Application number	US-202418741437-A
Country	US
Kind code	B2
Filing date	Jun 12, 2024
Priority date	Aug 31, 2020
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A contactless card with power harvesting unit is described. The power harvesting unit is configured to harvest power from near field communication radio wave fields and supply power to a memory, processor, and communication circuit of the contactless card. In some embodiments, the contactless card may also include a capacitor for smoothing out power deliver or a rechargeable battery. The contactless card is configured to establish two-way communication with a secondary device and to store and execute applets. In some embodiments, the contactless card is a payment card which contains information associated with a primary profile and a secondary profile. The secondary profile may be activated using two-way communication if the primary profile is deactivated due to fraudulent activity.

First claim

What is claimed is:

1 . A contactless card, comprising:
a processor; and a communication interface, wherein the processor limits a range of a signal generated by the communication interface to a predetermined range.

2 . The contactless card of claim 1 , wherein the processor limits the range of the signal by limiting an amount of power supplied to the communication interface.

3 . The contactless card of claim 1 , further comprising:
a power harvesting unit, wherein the power harvesting unit harvests power from a communication field generated by a secondary device.

4 . The contactless card of claim 3 , further comprising:
a first capacitor electrically connected to the power harvesting unit, wherein the first capacitor rapidly charges and rapidly discharges.

5 . The contactless card of claim 4 , further comprising:
a second capacitor electrically connected to the power harvesting unit, wherein the second capacitor slowly charges and slowly discharges.

6 . The contactless card of claim 5 , wherein the second capacitor can hold a charge for a longer period of time than the first capacitor.

7 . The contactless card of claim 3 , further comprising a battery electrically connected to at least one selected from the group of the power harvesting unit, the processor, and the communication interface.

8 . The contactless card of claim 7 , wherein, when the contactless card is outside of the communication field, the battery supplies power to at least one selected from the group of the power harvesting unit, the processor, and the communication interface.

9 . A method performed by a contactless card comprising a processor and a communication interface, the method comprising limiting a range of a signal generated by the communication interface to a predetermined range.

10 . The method of claim 9 , further comprising:
establishing communication between the contactless card and a secondary device; and receiving, from the secondary device, an applet.

11 . The method of claim 10 , wherein the applet provides access to a privilege.

12 . The method of claim 10 , further comprising:
prior to establishing communication, detecting, by the contactless card, a strength of the communication field; and upon detecting that the communication field is of at least a predetermined strength, establishing communication.

13 . The method of claim 12 , further comprising transmitting, to the secondary device, information for use in auto-filing a form.

14 . The method of claim 13 , wherein the information causes the secondary device to grant the privilege.

15 . The method of claim 12 , wherein the communication is two-way communication between the contactless card and the secondary device.

16 . The method of claim 15 , wherein the two-way communication is accomplished via low energy radio signals.

17 . The method of claim 16 , further comprising:
receiving, from an application executing on the secondary device, one or more applets, wherein the one or more applets configured the contactless card for a plurality of uses, and wherein the plurality of uses comprises a plurality selected from the group of functioning as an identification card, functioning as a security card, functioning as an access card, functioning as a transportation card, functioning as a payment card, functioning as a loyalty program card, functioning as an insurance card, functioning as a membership card, functioning as a debit card, and functioning as credit card.

18 . The method of claim 17 , wherein:
one of the plurality of uses is functioning as an access card, and the access card is configured to access multiple separate access points.

19 . A non-transitory computer-accessible medium containing instructions that, when executed by a computer hardware arrangement comprising a processor and a communication interface, cause the computer hardware arrangement to perform procedures comprising limiting a range of a signal generated by the communication interface to a predetermined range.

20 . The non-transitory computer-accessible medium of claim 19 , limiting the range of the signal comprises limiting an amount of power supplied to the communication interface.

Assignees

• Capital One Services Llc

Inventors

• Rule Jeffrey
• Osborn Kevin
• Herrington Daniel
• Carroll William

Classifications

• H02J7/865

  Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence) · CPC title

• H04B5/79 Primary

  for data transfer in combination with power transfer · CPC title

• H04W12/06

  Authentication · CPC title

• H02J50/001

  Energy harvesting or scavenging · CPC title

• H04L63/0853

  using an additional device, e.g. smartcard, SIM or a different communication terminal (cryptographic mechanisms or cryptographic arrangements for entity authentication involving additional secure or trusted devices H04L9/3234) · CPC title