Network manager for cable television system headends
CA 2177153 C · Owner: Comcast Ip Holdings I, Llc · Inventors: Hendricks, John S.; Wunderlich, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel network manager (214) that monitors and manages cable headend (208) components and set top terminals (220) in a television delivery system (200) is described. The invention coordinates the reception of programming and control signals at a headend (208) storing, signals for intelligent selection and distribution. The invention uses a receiver (254) a work station (256), a program control information processing component (258), a network management CPU (260) databases (262), control software (264) and an instruction memory (266). The invention uses these components to manage headend (208) components such as signal reception equipment (234) an authorization, component (236), a file …
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 2, 1994 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2016.
- 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.