Apparatus and method for using encoded video recorder/player timer preprogramming information
CA 2005070 C · Owner: Rovi Guides, Inc. · Inventors: Kwoh, Daniel S.; Yuen, Henry C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Encoded video recorder/player timer preprogramming information listed in a television guide allows a timer preprogramming feature on a video cassette recorder (VCR) to be programmed using a compressed code of only 1 to as few as 7 digits, which are decoded by a decoder built into either the video cassette recorder or a remote controller to convert the compressed coda into channel, date, time and length information. The channel date, time and length information is communicated to a VCR and used to automatically activate the VCR to record a given television program with the corresponding channel date, time and length. Alternately, the channel date, time and length, information is decoded …
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 11, 1989 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2011.
- 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.