Pattern recognition-based geolocation
CA 2275911 A1 · Owner: Lucent Technologies Inc. · Inventors: Chiang, Tung Ching; Chen, Byron Hua; Freidenfelds, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique for identifying a geographical location of a mobile terminal which includes receiving a set of characteristics from the mobile terminal comparing the, set of characteristics from the mobile terminal with a set of attributes for each of the cells and identifying, one of the sub-cells whose attributes most closely match the characteristics from the mobile terminal as the subcell in which the mobile terminal located. The attributes may include discrete RF attributes such as, average pilot strength, chip offset or pilot strength. The attributes may also include continuous features such as signature waveforms.
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 June 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.