Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1997-12-12
2000-11-07
De Cady, Albert
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
H03M 1300
Patent
active
061451096
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. An encoder at the sending end derives p redundancy blocks from each group of a k payload blocks and concatenates the redundancy blocks, respectively, with payload blocks in the next group of k payload blocks. At the receiving end, a decoder may recover up to p missing packets in a group of k packets, provided with the p redundancy blocks carried by the next group of k 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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Borella Michael
Mahler Jerry
Schuster Guido M.
Sidhu Ikhlaq
3Com Corporation
Cady Albert De
Greene Jason
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