Access control and key management system for streaming media
CA 2488844 C · Owner: Medvinsky, Alexander · Inventors: Moroney, Paul; Peterka, Petr; Medvinsky, Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A session rights object and authorization data are used for defining a consumer's access right to a media content stream. The access rights are determined at a caching server (115) remotely located from the consumer (116) rather than locally at the end user site. In a first aspect in a computing , network having a content provider (102) a key distribution center, a caching , server (115) and a client (116) a method for controlling client access to a real-time data stream from the caching server is disclosed. The method , includes receiving by the client, a session rights object from a content provider, the session rights object defining access rules for accessing the real-time data …
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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 June 12, 2003 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2025.
- 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.