System and method for multicasting multimedia content
CA 2287417 A1 · Owner: Hughes Electronics Corporation · Inventors: Dillon, Douglas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multicast network system utilizes a high speed link such as a satellite , link, to multicast multimedia information from the Internet to a plurality of receivers, such as personal computers. Information from selected web sites is organized into "channels" and provided to a multicast network for multicast transmission to the receivers. Updated channel information is also periodically provided. The receivers store the received channel such that a user can access the web page content in the channel at hard disk speed. Preferably, a conditional access system ensures that only authorized receivers receive the channels. The present invention also preferably includes a lower speed …
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 October 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2020.
- 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.