SYSTEM AND METHOD FOR NEAR FIELD COMMUNICATION

摘要

Systems, methods, and devices are provided for a near-field communication (NFC) system for use with mobile computing device. In an embodiment, an RFID reader device is configured for operation with a smart phone using the audio (headphone) port, and which is entirely powered and controlled by the mobile computing device through the audio port. A specially tuned charge pump ladder is used for powering the RFID reader device over a TRRS connection with the mobile computing device, without requiring an internal power source, such as a battery, in the RFID reader device. In an embodiment, an app running on the mobile computing device includes functionality for providing power and data channels over the TRRS port to the RFID reader device.

主权项

1. A system for providing a near field communication (NFC) session with an NFC-tagged object, comprising:
a tip-ring-ring-sleeve (TRRS) component configured to be inserted into an audio port on a smart device and including at least three channels; an NFC component for transmitting a first radio frequency (RF) signal and for receiving a second RF signal, the second RF signal including identifying information, the NFC component further configured to decode the second RF signal to determine the identifying information; and an energy-collecting component configured to store energy from a modulated power signal, the energy-collecting component further configured to supply energy in a burst to the NFC component for use in transmitting the first RF signal; wherein a first channel of the at least three channels is configured for receiving power, a second channel is configured for receiving control signals, and a third channel is configured for communicating tag value information.