Method and apparatus for providing an interactive program guide with headend processing
CA 2331092 A1 · Owner: Michaud, Ted R. · Inventors: Michaud, Ted R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus of providing an electronic guide to television programming provides a headend database and processor which segments and categorizes programming information which is then broadcast in a hierarchy over an out-of-band channel. Individual subscriber's set-top terminals access and display the guide information direct from the headend server in response to input from the subscriber. Alternatively individual set-top terminals , submit requests for particular guide information which are filled by the server serially over the out-of-band channel.
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 April 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.