Computerised method for using an interactive digital television broadcast
CA 2396432 C · Owner: Canal + Technologies · Inventors: Chouraqui, Jerome
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a computerised method for operating an interactive digital television programme broadcast in the form of a digital signal comprising a dataflow corresponding to compressed video images and a dataflow corresponding to at least a multimedia application as well as service signals for managing said dataflows. The invention is characterised in that it comprises a step which consists in detecting the service signal corresponding to a synchronising cueing signal sequence including: a sequence assigned to designate a multimedia application present in the digital signal and a signal sequence assigned to the recording of parameters executing said designated multimedia …
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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 January 3, 2001 and granted August 16, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2023.
- 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.