Data server, control server and gateway architecture system and method for broadcasting digital video on demand
CA 2110133 C · Owner: Hall, James M. · Inventors: Williams, Robin; Schaszberger, Mark L.; Moore, Frank R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data processing system is disclosed for providing digital video information on subscriber demand for very large video data, files. The system enables rapid response to the requests by network subscribers, independent of the number of video files offered for selection. The data processing system is coupled through a data switch to a subscriber communications network.
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 November 26, 1993 and granted April 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2015.
- 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.