System for providing alternative services
CA 2405491 C · Owner: Synamedia Limited · Inventors: Jerding, Dean F.; Rodriguez, Arturo A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a system for providing alternative services in a television system. In one implementation a subscriber is provided an , alternative service upon attempting to access an unauthorized service thereby , providing a framework for efficient control of conditional access and enhanced services. In addition, in one implementation user device limitations or , variations are handled conveniently through the same multi-purpose system for providing alternative services.
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 April 2, 2001 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2023.
- 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.