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Multicast packet video system and hardware

  • US 20070147371A1
  • Filed: 09/26/2006
  • Published: 06/28/2007
  • Est. Priority Date: 09/26/2005
  • Status: Abandoned Application
First Claim
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1. A multicast packet video system having machine instructions stored in a computer readable medium, the system comprising:

  • a codec placement module placing codecs in nodes of a multicasting network, said module including at least one of;

    (a) distributed codec placement machine instructions receiving, at a parent node of the network, feedback from its child nodes indicating a number of the child nodes unable to decode FEC blocks, and placing a codec at the parent node if the number exceeds a threshold;

    or (b) centralized codec placement machine instructions placing codecs in nodes of a multicasting tree of the network by recursively performing a search of a network topology T to find an optimum node c at which to place a codec in order to obtain a maximum improvement in average video-packet throughput over nodes of the tree as a result of the codec recovering lost video and parity packets and transmitting them downstream.

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