Optimum route determination

Details Optimum route determination Optimum route determination

1994-05-26

1996-01-23

Swarthout, Brent A.

Communications: electrical

Vehicle position indication

Map display

340990, 364444, 364449, G08G 1123

Patent

active

054868220

ABSTRACT:
An optimum route determination apparatus comprises a plurality of specific points selected from a road map on the basis of a fixed criterion, and an optimum route leading to each destination in which one of the specific points is a departure point and which has been calculated in advance. A route memory has a route table in which data of an initial route leading from the one of the specific points to at least the next specific point through which the optimum route passes are stored in correspondence with the each destination and the one of the specific points. An initialization unit is provided for setting a destination, a specific point near to a vehicle's current location, and specific points along the optimum route. An initial route acquisition unit is provided for retrieving the route table to acquire the data of the initial route in accordance with the destination and the specific point set by the initialization unit.

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"CARGuide-on-Board Computer for Automobile Route Guidance", M. Sugie et al., AFIPS Conference Proceedings, 1984 National Computer Conference, Jul. 9-12, 1984, Las Vegas, Nevada, AFIPS Press.
John Walker, Editor, "Mobile Information Systems", 1990, Artech House, Boston, Chapter 6: D. J. Jeffrey, "Route Guidance and Vehicle Location Systems", pp. 177, 202.

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