Method and apparatus for obtaining reliable synchronization over a noisy channel
Patent 4701939 Issued on October 20, 1987. Estimated Expiration Date: 
April 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 1, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3576947 3883729 Bit switching of word synchronized data AMI Decoder apparatus Weighted erasure codec for the (24, 12) extended Golay code Synchronizing device for a time division multiplex system Extract from barrenwort Pseudo-random convolutional interleaving Patent #: 4547887 InventorsApplicationNo. 06/718266 filed on 04/01/1985US Classes:375/366, Plurality of synchronization words375/367, Pseudo noise714/775SynchronizationExaminersPrimary: Safourek, Benedict V.Attorney, Agent or FirmInternational ClassH04L 7/04 (20060101)AbstractMethod and apparatus for synchronizing a transmitter and a receiver in a synchronous serial transmission system by serially transmitting a plurality of pseudorandom, coded sync words in an interlaced fashion with corresponding bits of each word transmitted in sequence. At the receiver, received bits are first directed to a plurality of registers to undo the interlacing process and then decoded with the decoded word being compared by an autocorrelation technique to a known reference to thereby establish or reestablish synchronization between transmitter and receiver.Other References
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