Forward error correction system for packet based real time media
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Feb 3, 1999
filing date -
Dec 12, 1997
priority date (Note) -
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Abstract
A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. The invention appends to each of a series of payload packets a single forward error correction code that is defined by taking the XOR sum of a preceding specified number of payload packets. The invention thereby enables correction from the loss of multiple packets in a row, without significantly increasing the data rate or otherwise delaying transmission.
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