In-station television program encoding and monitoring system and method
CA 2123995 C · Owner: Vidcode, Inc. · Inventors: Keene, Leonard D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An in-station method and apparatus for encoding television programs including , commercials, with a digital identification code recorded on a selected video scan line which is not normally visible to the television viewer, and far verifying the proper airing of such programs by such television broadcast station. The encoding and decoding is performed at the broadcast station during its normal operating procedure. The program is encoded (23) during the normal dubbing procedure (17, 19, 21) when a program video tape is dubbed to a video cartridge for use by the broadcast station's library management system (15). The decoder (31, 33) is located either at the station at an off-air monitor …
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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 November 20, 1992 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2014.
- 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
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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.