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Receiver-driven layered error correction multicast over heterogeneous packet networks

  • US 6,532,562 B1
  • Filed: 05/21/1999
  • Issued: 03/11/2003
  • Est. Priority Date: 05/21/1999
  • Status: Expired due to Term
First Claim
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1. A computer-implemented error correction process for use in a receiver-driven layered multicast of real-time media over a heterogeneous packet network to a plurality of receivers, wherein the real-time media is transmitted over the network in multiple streams of packetized source data forming hierarchical layers of information, said error correction process comprising using a computer to perform the following step:

  • multicasting at least one stream of packetized error correction information for at least one of the streams of packetized source data, wherein each stream of packetized error correction information is capable of being used by a receiver to assist in the recovery of packets of source data lost during transmission.

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