Transparent digital rights management for extendible content viewers
CA 2615030 A1 · Owner: Pistoia, Marco · Inventors: Munson, Jonathan P.; Nadeem, Tamer; Youssef, Alaa S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital rights management system for controlling the distribution of digital content to player , applications. The system comprises a verification system a trusted content , handler, and a user interface control. The verification system is provided to validate the integrity of the player , applications; and the trusted content handler is used to decrypt content and to transmit the , decrypted content to the player applications and to enforce usage rights , associated with the content. The user interface control module is provided to ensure that users of the player , applications are not exposed to actions that violate the usage rights. The preferred embodiment , of the present …
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 July 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.