Patent ID: 9054749
Filing Date: 2015-06-09
Classification: G06K,H04B,Y02D

Abstract:
1. A method for optimizing power consumption in a near field communication (NFC) environment, comprising: 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; receiving, by the first NFC device, a second communications signal including a response to the read command from the second NFC device; determining, by the first NFC device, whether a complete UID of the second NFC device has been received; determining, by the first NFC device in response to the complete UID of the second NFC device not being received, whether the response indicates an overvoltage condition is present in the second NFC device; and repeating the providing, the receiving, the determining whether the complete UID has been received, and the determining whether the response indicates the overvoltage condition until the complete UID of the second NFC device has been received, wherein for each repetition, the response includes one or more other bits of the UID for each repetition.