Pairing devices in conference using ultrasonic beacon and subsequent connection transfer

摘要

A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the A/D and D/A converters of the loudspeaker and microphone.

主权项

1. A method implemented at a first device for conferencing the first device and a second device in a near-end environment with a far-end, comprising:
outputting, with the first device, connection information in an imperceptible acoustic beacon in the near-end environment; connecting the first device via a near-end connection to the second device in the near-end environment by receiving a response at the first device from the second device via the near-end connection, the response being based on the second device using the output connection information requesting connection of the second device with the first device; and taking over, with the first device, a far-end connection that the second device has with the far-end.