Secure streaming of digital audio/visual content
CA 2364263 C · Owner: Story, Guy A. Jr. · Inventors: Rajasekharan, Ajit V.; Huffman, Andrew J. (Deceased); Story, Guy A. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for secure streaming of digital audio and/or visual content (210) is described. Authorization data corresponding to the digital content (210) is received. A check is performed to determine whether a playback device (230) is authorized to play the digital content (210) based at least in part, on the authorization data. A stream of data representing portions of the digital content (210) is played if authorized. In one , embodiment, portions of the stream of digital content (210) are intermittently checked for authorization.
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 December 29, 1999 and granted November 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 2021.
- 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.