I/o trapping for sound generation in the computer
CA 2135506 C · Owner: Devins, Robert J. · Inventors: Hon, Stephen; Keller, Emory D.; Devins, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An audio system is provided for generating audio sound for a host computer. It includes an interface connector for connection with the host computer; an interface controller for communicating with the host computer using the interface connector; a trap adapted to trap audio instruction signals from an application running on the host such as a, game having an audio portion; a trap controller adapted to control the trap; and an audio output. The system operates with an interface communicator which is adapted to respond to a request from the interface controller to read information from the trap and send audio output instructions to the audio output to generate audio sound.
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 November 9, 1994 and granted June 8, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2016.
- 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.