System and method for a conference server architecture for low delay and distributed conferencing applications
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United States of America Patent
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Oct 2, 2012
Grant Date -
Dec 3, 2009
app pub date -
Aug 11, 2009
filing date -
Jul 20, 2005
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Abstract
Systems and methods for conducting a multi-endpoint video signal conference are provided. Conferencing endpoints are linked by pairs of a reliable and a less reliable communication channel. Conference video signals are scaleable coded in base layer and enhancement layers format. Video signal base layers, which correspond to a minimum picture quality, are communicated over reliable channels. The video signal enhancements layers may be communicated over the less reliable channels. A conference server mediates the switching of video layer information from transmitting endpoints to receiving endpoints without any intermediate coding or re-coding operations. The video conference can be integrated with an audio conference using either scalable coded audio signals or non-scaleable coded audio signals.
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