OPTIMIZING POWER CONSUMPTION IN A NEAR FIELD COMMUNICATIONS (NFC) ENVIRONMENT
First Claim
1. A method for optimizing power consumption in a near field communication (NFC) environment, comprising:
- (a) providing, by a first NFC device, a first communications signal including a read command at a first power to a second NFC device to recover a unique identifier (UID) of the second NFC device;
(b) receiving, by the first NFC device, a second communications signal including a response to the read command from the second NFC device;
(c) determining, by the first NFC device, whether a complete UID of the second NFC device has been received; and
(d) determining, by the first NFC device, whether the response indicates an overvoltage condition is present in the second NFC device when the complete UID of the second NFC device has not been received.
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Accused Products
Abstract
An apparatus and method is disclosed to optimize power consumption in a NFC environment. A first NFC capable device provides a polling command to a second NFC capable device. The second NFC capable device provides a response to the polling command. The first NFC capable device provides a read command to the second NFC capable device. The second NFC capable device provides a response to the read command that indicates an overvoltage condition is present. The first NFC capable device adjusts a power level that is to be used to transmit further commands when the overvoltage condition is present.
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Citations
20 Claims
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1. A method for optimizing power consumption in a near field communication (NFC) environment, comprising:
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(a) providing, by a first NFC device, a first communications signal including a read command at a first power to a second NFC device to recover a unique identifier (UID) of the second NFC device; (b) receiving, by the first NFC device, a second communications signal including a response to the read command from the second NFC device; (c) determining, by the first NFC device, whether a complete UID of the second NFC device has been received; and (d) determining, by the first NFC device, whether the response indicates an overvoltage condition is present in the second NFC device when the complete UID of the second NFC device has not been received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for optimizing power consumption in a near field communication (NFC) environment, comprising:
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(a) receiving, by a first NFC device, a first communications signal including a read command at a first power from a second NFC device to recover a unique identifier (UID) of the first NFC device; (b) monitoring, by the first NFC device, the first power to determine whether an overvoltage condition is present; and (c) providing, by the first NFC device, a second communications signal including a response to the read command to the second NFC device, the response including one or more bits of the UID and an indication of whether the overvoltage condition is present. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for optimizing power consumption in a near field communication (NFC) environment, comprising:
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an antenna module configured to inductively receive a first communications signal including a read command to recover one or more bits of a unique identifier (UID) via a magnetic field; a power harvesting module configured to rectify the first communications signal to provide a rectified power and to compare the rectified power with an overvoltage threshold to determine whether an overvoltage condition is present; and controller module configured to provide a response to the read command to indicate whether the overvoltage condition is present, wherein the antenna module is configured to provide a second communication including the response using the magnetic field. - View Dependent Claims (17, 18, 19, 20)
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Specification