Speech recognition system
CA 2222075 C · Owner: Hattori, Hiroaki · Inventors: Hattori, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A speech recognition system is disclosed in which, partial reference patterns capable of being subjects of similarity computation with an input pattern obtained from a speech analyzing unit through analysis of (i.e. feature quantity extraction from) a speech waveform among reference, patterns of words to be recognized which are stored in a reference pattern memory, and cumulative similarities of these patterns, are stored in a temporary pattern memory. A counting unit counts partial reference patterns of higher cumulative similarities than a prevailing threshold stored in a threshold memory. A threshold computing unit computes a threshold of pruning from the correspondence relation between …
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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 November 24, 1997 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2019.
- 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
Timeline From CIPO dates
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.