Automatic display of auxiliary video information during audio muting
CA 2113199 C · Owner: Thomson Consumer Electronics, Inc. · Inventors: Forler, Joseph Wayne; Teskey, John Frederick; Landis, Michael David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for processing audio and video components of a television signal provides for automatic control of closed caption signal display in response to the status of an audio muting feature. The system includes an operating mode in which enabling audio muting also enables the closed caption display and disabling muting disables generation of the closed caption display.
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 13, 1994 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 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.