Speaker recognition device
CA 2227925 C · Owner: Nec Corporation · Inventors: Hattori, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A speaker recognition device for judging whether or not an unknown speaker is an authentic registered speaker himself/herself executes 'text verification using speaker independent speech recognition and 'speaker verification by comparison with a reference pattern of a password of a registered speaker'. A presentation section instructs the unknown speaker to input an ID and utter a specified text designated by a text generation section and a password. The 'text verification' of the specified text is executed by a text verification section, and the 'speaker verification' of the password is executed by a similarity calculation section. A judgment section judges that the unknown speaker is the …
Read the whole patent
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 January 27, 1998 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2020.
- 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.