Device for encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa
CA 2281936 A1 · Owner: Shimpuku, Yoshihide · Inventors: Nakagawa, Toshiyuki; Kahlman, Josephus A. H. M.; Narahara, Tatsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device is disclosed for encoding a stream of databits of a binary source signal (S) into a stream of databits of a binary channel signal (C) wherein , the bitstream of the source signal is divided into n-bit source words (x1 x2), which device comprises converting means (CM) adapted to convert said source words into corresponding m-bit channel words (y1 y2, y3). The , converting means (CM) are further adapted to convert n-bit source words into corresponding m-bit channel words, such that the conversion for each n-bit source word is parity preserving (table I) (Fig. 1). The relations hold that mn1, p1, and that p can vary. Preferably m = n + 1. The device is adapted to , convert the …
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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 December 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2020.
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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.