System and method for recording and playing back multimedia events
CA 2198699 C · Owner: Bell Communications Research, Inc. · Inventors: Rohall, Steven Lee; Rosenberg, Jonathan; Smoot, Lanny Starkes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for recording and playing back multimedia events includes recording sources, a preprocessor, a delivery processor and user control , units. The, recording sources each captures a continuous temporal record or track of the multimedia event and transmit the captured track to the source preprocessor where, tracks are coded into digital blocks and digitized blocks of tracks received simultaneously are time stamped with the same relative time and therefore, synchronized in time. Tracks of the multimedia event are also compressed and preprocessed to generate other representations of the multimedia event which , further, assist users in searching through the media event. The delivery …
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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 August 7, 1995 and granted October 12, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2017.
- 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.