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Multiple multicasting of multimedia streams

  • US 6,564,262 B1
  • Filed: 10/14/1999
  • Issued: 05/13/2003
  • Est. Priority Date: 09/16/1996
  • Status: Expired due to Term
First Claim
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1. In a client computer coupled to a server via a network, a method for receiving data from said server, said data streamed via at least two multicast groups, said method comprising:

  • receiving said data from said server via said at least two multicast groups;

    selecting a first suitable multicast group from said at least two multicast groups, said selected first multicast group associated with a first base layer and a first at least one enhancement layer of said data which best matches a target bandwidth of said client computer;

    joining said selected first multicast group;

    detecting a change in desired bandwidth of said client computer;

    selecting a second suitable multicast group from said at least two multicast groups, said selected second multicast group associated with a second base layer and a second at least one enhancement layer of said data which best matches the changed target bandwidth of said client computer;

    joining said selected second multicast group; and

    wherein the first multicast group and the second multicast group are joined concurrently.

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