Navigation method and navigation system for means of locomotion
US6456933B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Sep 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096861
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for navigating from a starting point, especially from an instantaneous location, to a destination, a routing algorithm of a navigational system for a means of locomotion, particularly a motor vehicle, ship, or airplane, calculating a route from the instantaneous location to the destination via nodal points stored in a digital map. In the case in which at least one of the nodal points of the route to be calculated is not contained in an internal digital map stored internally in the navigational system, the part of the route which exclusively includes nodal points of the internal digital map is calculated by an internal routing algorithm on the basis of the internal digital map as an internally calculated route portion, and the part of the route which does not include nodal points stored in the internal digital map is calculated by an external routing algorithm as an externally calculated route portion on the basis of a digital map stored externally with respect to the navigational system, transitional nodal points from the externally calculated route to the internally calculated route and/or vice versa being determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.