Epg with advertising inserts
CA 2275720 C · Owner: Rovi Guides, Inc. · Inventors: Kwoh, Daniel S.; Leung, Elsie Y.; Mankovitz, Roy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Advertisements (50) are inserted in an EPG on the screen (40) of a display monitor (20) between the individual television program listings. Specifically a memory (22, 34) stores EPG data and advertising data. A microprocessor (24) is programmed to recover EPG data corresponding to a number of television programs and advertising data from the memory. The microprocessor controls the monitor to display the recovered EPG data on the screen in lines of television program listings, each television program listing being displayed in a separate line, and to display the recovered advertising data in a line on the screen instead of one of the television program listings. The EPG and …
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 19, 1997 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2019.
- 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.