Vehicle position and azimuth computing system
CA 2072379 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Tsuji, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An vehicle position and azimuth computing apparatus is constructed to correct both of a positional error and an azimuth error caused by the accumulation of a sensor error and a map error and to provide both high positional precision and high azimuth precision. To this end, the vehicle position and azimuth computing apparatus operates to detect both an angular velocity and a moving distance of a vehicle, to compute an on-vehicle position and on-vehicle azimuth, and to detet a straight running condition of the vehicle. Then, after the GPS measurement positions during the straight running of the vehicle have been obtained, regression lines are obtained by regressing the longitudes and …
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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 June 25, 1992 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2014.
- 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.