Patent Yard Sign in
Expired Canadian patentCanada

Speech processing apparatus and methods

CA 1305256 C · Owner: Smiths Industries Public Limited Company · Inventors: Taylor, Michael R.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Known speech recognition apparatus for recognising several different, spoken statements comprising several words includes an acoustic recogniser, that compares speech sounds from a microphone with signals stored in a reference vocabulary. When words making up a statement are recognised a, signal is supplied to control equipment associated with that statement. In the present invention the apparatus has a processing unit with groups of several storage locations. Each group is associated with a different statement, each location in that group being associated with an individual word. Signals representing the spoken words are used to mark those locations in every group that has a location …

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

  • Granted July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1987
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1305256 C
Classification (IPC)G10L15/10

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 30, 1987Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.