Multi-channel television system with viewer-selectable video and audio
CA 2206105 C · Owner: Motorola Mobility Llc · Inventors: Vancelette, Paul D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A television viewer can select among a choice of available camera angles and audio feeds when viewing a sporting event such as a football game without changing the television channel. Audio, video and control data are transmitted in packetized data streams with control data providing a pre-assigned channel designation (e.g. channel 10 for network X). A set-top terminal receives and processes the data streams according to user-provided commands. The terminal includes software which can be downloaded via the data streams or installed locally. The control data in the data stream is used to provide an on-screen graphical display on the television that allows the user to select the audio and …
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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 May 26, 1997 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 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.