Method and apparatus for transmitting position information on a digital map
CA 2431650 C · Owner: Adachi, Shinya · Inventors: Adachi, Shinya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention purposes to provide a position information transmission method for accurately transmitting a position and a shape on a digital map with a small amount of data. In a position information transmission method of the invention, the transmitting side transmits road shape information to specify the target road section on a digital map and event information to specify an event position by using a relative position in the target road section and the receiving side performs map matching based on the road shape information to identify the target road section and identifies the event position in the target road section based on the event information is characterized in that the …
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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 28, 2002 and granted August 12, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2024.
- 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.