SYSTEM AND METHOD FOR VIDEOCONFERENCING USING SCALABLE VIDEO CODING AND COMPOSITING SCALABLE VIDEO CONFERENCING SERVERS
First Claim
Patent Images
1. A multi-endpoint video signal conferencing system for videoconferencing between a plurality of endpoints over a communications network, the system comprising:
- a conferencing bridge (“
Compositing Scalable Video Coding Server”
(CSVCS)) linked to at least one receiving and at least one transmitting endpoint by at least one communication channel each, at least one endpoint that transmits coded digital video using either a single-layer coding format or a scalable video coding format, and at least one receiving endpoint that is capable of decoding at least one digital video stream coded in a scalable video coding format, wherein the CSVCS is configured to compose input video signals received from transmitting endpoints into a single composite coded digital video output signal, and to forward the single composite coded digital video output signal to the at least one receiving endpoint.
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Abstract
Systems and methods for videoconferencing are provided. The systems use scalable video coding techniques and a compositing scalable video coding server (CSVCS) to composite input video signals from transmitting conferencing participants into one single output video signal forwarded to a receiving participant. The server is configured to composite the input video signals pictures without decoding, rescaling, and re-encoding of the signals.
119 Citations
69 Claims
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1. A multi-endpoint video signal conferencing system for videoconferencing between a plurality of endpoints over a communications network, the system comprising:
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a conferencing bridge (“
Compositing Scalable Video Coding Server”
(CSVCS)) linked to at least one receiving and at least one transmitting endpoint by at least one communication channel each,at least one endpoint that transmits coded digital video using either a single-layer coding format or a scalable video coding format, and at least one receiving endpoint that is capable of decoding at least one digital video stream coded in a scalable video coding format, wherein the CSVCS is configured to compose input video signals received from transmitting endpoints into a single composite coded digital video output signal, and to forward the single composite coded digital video output signal to the at least one receiving endpoint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method for videoconferencing between a plurality of endpoints over a communications network, the method comprising:
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using a conferencing bridge (“
Compositing Scalable Video Coding Server”
(CSVCS)) linked to at least one receiving and at least one transmitting endpoint by at least one communication channel each;
transmitting coded digital video from at least one transmitting endpoint in either a single-layer coding format or a scalable video coding format; and
at the CSVCS, composing input video signals received from transmitting endpoints into a single composite coded digital video output signal, and forwarding the single composite coded digital video output signal to at least one receiving endpoint which is capable of decoding at least one digital video stream coded in a scalable video coding format. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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Specification