System and method for information filtering
CA 2348031 A1 · Owner: Freimann, Felix · Inventors: Freimann, Felix
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to an embodiment of the invention a fast matching algorithm uses a , memory space efficient data structure to accomplish information filtering in a system receiving information, such as a set top box used in conjunction with a television set. The data structure, according to an embodiment of the present invention, may include a node (300a) with a plurality of levels of expected values of data fields with an associated index to another node (300b) to be used when a matching identification of a particular level is not found. Additionally, according to an embodiment of the invention the nodes (300a-p) , in this data structure may include a level field which identifies levels …
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 1, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.