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System and method for video conferencing

  • US 9,137,486 B2
  • Filed: 12/05/2013
  • Issued: 09/15/2015
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. A system comprising at least one processor configured to:

  • receive a request from a first endpoint to subscribe to a first multicast group, the first endpoint associated with a first user;

    cause the first endpoint to receive a video stream associated with a second user if the first user is not speaking when the request from the first endpoint was received;

    cause the first endpoint to receive a video stream associated with a third user if the first user is speaking when the request from the first endpoint was received;

    receive a request from a second endpoint to subscribe to a second multicast group, the second endpoint associated with a fourth user;

    cause the second endpoint to receive a first video stream if the fourth user is not speaking when the request from the second endpoint was received, the first video stream comprising a first plurality of video streams, the first plurality of video streams comprising a video stream associated with a user speaking when the request from the second endpoint was received; and

    cause the second endpoint to receive a second video stream if the fourth user is speaking when the request from the second endpoint was received, the second video stream comprising a second plurality of video streams, the second plurality of video streams comprising a video stream associated with a user speaking prior to receiving the request from the second endpoint.

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