Identification of video storage media
CA 2347662 A1 · Owner: 4Tv Limited · Inventors: Austin, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of generating data for identifying a video storage media comprising the steps of (1) generating from the contents of the media a data sequence representing the picture and/or the audio and/or data content of the video medium, (2) combining said data sequence with position information and/or picture and/or text and/or data or other information. It also provides a system for controlling a video recorder or other media device for selective enabling and disabling of associated functions. A graphical user interface is adapted to display information relating to television program content and/or data content from other sources such as the Internet and video recorder or other …
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 July 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 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.