Patent ID: 9338002
Filing Date: 2016-05-10
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for wireless communication using an acoustic signal between a first device and a second device, comprising: i) generating, by the second device, when the second device connects to the first device, connection initiation information including key information for secure communication; ii) converting the connection initiation information to an acoustic signal; iii) transmitting the acoustic signal to the first device through an acoustic communication channel; iv) monitoring a radio wireless channel, which is secured using the key information for secure communication, to determine whether a valid response from the first device is received; v) upon lack of receipt of the valid response from the first device, increasing a volume level of the acoustic signal by a predetermined amount, up to a maximum volume level, and repeating steps i) through vi); and vi) upon receipt of the valid response from the first device, discontinuing transmission of the acoustic signal, and communicating with the first device securely on the radio wireless channel.