Generalized viterbi algorithm with tail-biting
CA 2068159 A1 · Owner: General Electric Company · Inventors: Toy, Raymond Leo; Chennakeshu, Sandeep
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RD-20,626, ABSTRACT, A method and apparatus for digital radio communication employs separation of a frame of data to be transmitted into key bits critical bits and unprotected bits. The key bits are processed to provide parity bits. The parity bits, and key bits are convolutionally encoded using a tail-biting scheme and merged with unprotected bits and, then transmitted. At the receiver the decoder splits the received data, into convolutionally encoded bits and unprotected bits and trellis, decodes the convolutionally encoded bits into a number of possible paths through a trellis using a generalized Viterbi algorithm. The tailbiting scheme reduces the number of bits that must be …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2014.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.