Interactive program guide with continuous data stream and client-server data supplementation
CA 2349350 C · Owner: United Video Properties, Inc. · Inventors: Hassell, Joel G.; Ellis, Michael D.; Thomas, William L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interactive television program guide system is provided. An interactive television program guide implemented on user television equipment obtains program guide data from two data delivery mechanisms. Current program guide data is obtained from a continuous data stream. Other program data (which may include the current program guide data) is obtained by the program guide from a program guide server. The continuous data stream may also include program and program grouping identifiers. The program guide may perform real-time actions associated with program identified in the continuous data stream.
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 29, 1999 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2021.
- 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.