Method for managing means for accessing conditional access data
CA 2579341 C · Owner: Duval, Gregory · Inventors: Duval, Gregory
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of managing access rights by a multimedia , unit. With known systems, when the partial validity duration reaches the deadline, the , management system must send a renewal message several times to ensure receipt which is non-optimal use of bandwidth. The present method involves verifying if a , multimedia unit (STB) is authorized to renew an access unit by utilizing a , control centre , (CG). An access unit renewal message is sent to the multimedia unit if the , multimedia , unit is authorized. An inhibition message is sent for preventing the multimedia unit from , sending a new access unit renewal message upon determining that the , multimedia …
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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 September 15, 2005 and granted February 17, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.