Video on demand gateway
CA 2465745 C · Owner: Mao, Weidong · Inventors: Flood, Aongus; Mao, Weidong; Krishnamoorthy, Venu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A video on demand (VOD) gateway allows multiple incompatible and noninteroperable VOD systems to function as a single unified VOD system. A VOD gateway system includes a VOD asset gateway a VOD session gateway, a VOD , transaction gateway and a generic VOD client software program. The generic VOD client software resides in a CATV set-top box. The VOD asset gateway at the headend aggregates video inventory from multiple VOD vendor's equipment The VOD session gateway at the headend translates a subscriber request in a generic protocol for VOD program into the proprietary protocol for a specific VOD system. The VOD transaction gateway at the headend aggregates transactions from multiple …
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 7, 2002 and granted February 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2024.
- 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.