Interactive video on demand network
CA 2135990 A1 · Owner: Verhille, Henri Albert Julia · Inventors: Deloddere, Daniel; Verhille, Henri Albert Julia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The interactive video on demand network is intended for a plurality of user stations (US11 ... USNM) and, includes a video server (VS) producing a plurality of delayed instances of a video signal for transmission to the user stations, and a buffer means (IB1, ... IBN) to an input of which a selected one of these instances is applied and at an output of which a version of the video signal as requested by a said user station is provided. The buffer means generates the requested version under control of control signals issued by the user stations and selects the instance based on that requested version. The buffer means (IB1 ... IBN) is able to, transmit a load request signal to the video …
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 November 16, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2016.
- 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.