Tuning a NFC antenna of a device
First Claim
Patent Images
1. A payment object reader comprising:
- a near field communication (NFC) antenna configured for reading an NFC enabled object, wherein the NFC antenna is subject to detuning away from a predetermined resonant frequency of the NFC antenna when a metal or conductive portion of the NFC enabled object is within a detuning distance from the NFC antenna;
a proximity sensor configured to detect that the NFC enabled object is within the detuning distance relative to the NFC antenna;
a NFC tuning subsystem configured to control tuning of the NFC antenna when the proximity sensor detects that the NFC enabled payment object is within the detuning distance relative to the NFC antenna, wherein the tuning of the NFC antenna is controlled to allow reading the NFC enabled payment object when the NFC enabled payment object is within the detuning distance; and
an accelerometer connected to the NFC tuning subsystem configured to output a device movement state.
2 Assignments
0 Petitions
Accused Products
Abstract
A NFC object reader'"'"'s NFC antenna system configured to dynamically change an element of the NFC antenna system to maintain the NFC antenna system'"'"'s antenna default resonant frequency. The NFC antenna system can be configured to include a tuning subsystem, integrated with sensors to trigger tuning of NFC antenna system'"'"'s antenna.
41 Citations
20 Claims
-
1. A payment object reader comprising:
-
a near field communication (NFC) antenna configured for reading an NFC enabled object, wherein the NFC antenna is subject to detuning away from a predetermined resonant frequency of the NFC antenna when a metal or conductive portion of the NFC enabled object is within a detuning distance from the NFC antenna; a proximity sensor configured to detect that the NFC enabled object is within the detuning distance relative to the NFC antenna; a NFC tuning subsystem configured to control tuning of the NFC antenna when the proximity sensor detects that the NFC enabled payment object is within the detuning distance relative to the NFC antenna, wherein the tuning of the NFC antenna is controlled to allow reading the NFC enabled payment object when the NFC enabled payment object is within the detuning distance; and an accelerometer connected to the NFC tuning subsystem configured to output a device movement state. - View Dependent Claims (2, 3, 4)
-
-
5. A payment object reader comprising:
-
a near field communication (NFC) antenna configured for reading a NFC enabled object, a proximity sensor configured to detect that the NFC enabled object is within a detuning distance relative to the NFC antenna; a NFC tuning subsystem configured to control tuning of the NFC antenna when the proximity sensor detects that the NFC enabled payment object is within the detuning distance relative to the NFC antenna; and an accelerometer connected to the NFC tuning subsystem configured to output a device movement state. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method comprising:
-
detecting, using a proximity sensor of a payment object reader, that a NFC enabled object is within a detuning distance relative to a NFC antenna of the payment object reader; detecting movement by an accelerometer of the payment object reader, the payment object reader having the NFC antenna configured for reading the NFC enabled object; outputting, by the accelerometer, a device movement state to a NFC tuning subsystem; and controlling tuning of the NFC antenna, by the NFC tuning subsystem, based on the device movement state. - View Dependent Claims (18, 19, 20)
-
Specification