Ultrasonic near-field communication

摘要

Systems and methods for near-field communications with a mobile device are disclosed. In one embodiment, a computer-implemented method for near-field communication may comprise: detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device.

主权项

1. A computer-implemented method for near-field communication, comprising:
detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data as a series of burst audio signals with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device, wherein each of the burst audio signals is a burst signal sustained over a predefined period of time, each of the burst signal encoded with a fixed number of bits of information, wherein each of the burst signals includes a signal from each of K non-overlapping ultrasonic frequency bands within a predefined spectrum, and wherein the signal lasts for the predefined period of time and K is an integer, and wherein N frequencies within each of the K non-overlapping ultrasonic frequency bands are used to encode the purchase data, and wherein N is an integer.