Packet loss error recovery

Details Packet loss error recovery Packet loss error recovery

2003-03-03

2010-11-02

Ellis, Kevin L (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C375S240120, C375S240270, C382S238000

Reexamination Certificate

active

07827458

ABSTRACT:
A method, apparatus, system, and signal-bearing medium that in an embodiment detect that a first packet is not received, add a place holder for the first packet in a buffer, request retransmission of the first packet, and create an estimated packet based on a combination of a second packet previous to the first packet, a third packet following the first packet, and a fourth packet from a previous frame that is spatially corresponding to the first packet. In another embodiment, a method, apparatus, system, and signal-bearing medium are provided that send a encoded packet to a receiver, save the encoded packet in a bitstream, determine whether the encoded packet is lost, and when the encoded packet is lost, decode the bitstream with the lost packet omitted and insert a reconstructed frame associated with the lost packet into a reference frame storage. In another embodiment, when the encoded packet is lost, a decoder is run on a reference frame chosen as the last uncorrupted frame. In another embodiment, when the encoded packet is lost, the decoder is run on a frame chosen from a set of previously stored reference frames.

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