Maximum likelihood sequence estimation apparatus
CA 2032867 C · Owner: Kubo, Hiroshi · Inventors: Kubo, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A maximum likelihood sequence estimation apparatus for estimating a transmitted signal sequence from a received signal sequence and an estimated channel impulse response characteristic. A merge detection circuit computes a time required for respective merges that is, the time required for convergence of all possible path to one state, instructs the maximum likelihood sequence estimation circuit to output a decided maximum likelihood data sequence to a channel impulse response characteristic estimation circuit based on such merge time and instructs a received signal hold circuit to output a held received signal to the channel impulse response characteristic estimation circuit. Thereafter, …
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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 20, 1990 and granted September 20, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.