Method and apparatus of load sharing and improving fault tolerance in an interactive video distribution system
CA 2694825 C · Owner: Nguyen, Hiep T. · Inventors: Nguyen, Hiep T.; Armstrong, James B.; Vogel, Stephen R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method providing improved fault tolerance through redundancy of hardware and software suitable for use in a head-end of an interactive information distribution system. Communications between each of a head-end controllers (130) and each of the server modules (106) are coincidentally sent along at least two signal paths (111) to provide to additional fault tolerance in the event one of the signal paths becomes inoperable. In one embodiment a video switch (113) comprises a plurality of I/O ports (320) coupled between a plurality of server modules (106) and a plurality of subscriber equipment (124) for transferring video information between the server (102) and the subscriber …
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 5, 2000 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2022.
- 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.