US 12,015,875 B2 · Method and system for real time audio in multi-point video conferencing

Abstract

A real time audio multi-point videoconferencing system comprising at least two videoconferencing endpoints in communication with a multipoint control unit, and a method of providing the real time audio. The method comprising capturing input lossless digital audio streams on each of the at least two videoconferencing endpoints, transmitting the input lossless digital audio streams from each of the at least two videoconferencing endpoints to the MCU using a frame size in the range 0.25 ms-3 ms, mixing, using the MCU, the input lossless digital audio streams into a plurality of output lossless digital audio streams, transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms, and playback the plurality of output lossless digital audio streams on each of the at least two videoconferencing endpoints.

Claims16

Dependent claims

A method of providing real time audio in a multi-point videoconferencing system having at least two videoconferencing endpoints in communication with a multipoint control unit (MCU), the method comprising:

capturing one or more input lossless digital audio streams on each of the at least two videoconferencing endpoints;
transmitting the one or more input lossless digital audio streams from each of the at least two videoconferencing endpoints to the MCU using a frame size in the range 0.25 ms-3 ms;
mixing, using the MCU, the one or more input lossless digital audio streams from each of the at least two videoconferencing endpoints into a plurality of output lossless digital audio streams;
transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms;
playing back the plurality of output lossless digital audio streams on each of the at least two videoconferencing endpoints;
and
compressing the one or more input lossless digital audio streams and the plurality of output lossless digital audio streams prior to transmission.

4 more elements

A real time audio multi-point videoconferencing system having at least two videoconferencing endpoints in communication with a multipoint control unit (MCU), wherein

each of the at least two videoconferencing devices comprises:
an audio capturing unit adapted to capture and encode audio into one or more input lossless digital audio streams, and to compress the input lossless digital audio streams;
a transmitting unit adapted to transmit the one or more input lossless digital audio streams using a frame size in the range 0.25 ms-3 ms;
a receive unit adapted to receive an output lossless digital audio stream transmitted with a frame size in the range 0.25 ms-3 ms;
and
a playback unit adapted to playback the received output lossless digital audio stream;
and the MCU comprises
a receive unit adapted to receive one or more input lossless digital audio streams from each of the at least two video conferencing devices, transmitted with a frame size in the range 0.25 ms-3 ms;
a mixing unit adapted to mix the one or more input lossless digital audio streams from each of the at least two video conferencing devices into a plurality of output lossless digital audio streams;
and
a transmitting unit adapted to transmitting a different one of the plurality of output lossless digital audio streams to each of the at least two videoconferencing endpoints using a frame size in the range 0.25 ms-3 ms.

8 more elements

Dependencies are inferred from the claim text.

Method and system for real time audio in multi-point video conferencing

Life of this patent

Method and system for real time audio in multi-point video conferencing

Life of this patent

Abstract

Claims16