Synchronization and error detection in a packetized data stream

Details Synchronization and error detection in a packetized data stream Synchronization and error detection in a packetized data stream

1994-12-23

1997-12-30

Baker, Stephen M.

Excavating

H03M 1300, H04L 700

Patent

active

057038872

ABSTRACT:
A method and apparatus are provided for achieving synchronization and detecting errors in a data stream such as an MPEG-2 transport packet stream. In an MPEG embodiment, the MPEG sync word is removed and replaced with a parity code that is used at the decoder for both synchronization and error detection. A syndrome calculator in the decoder can be implemented using a unique one bit in, one bit out FIR filter. Codewords used to generate the parity code can be provided by a linear block code that is a dual of a shortened cyclic code.

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Peterson, W., et al., Error-Correcting Codes, 2nd edition, pp. 170-205, Jul. 1981.

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