Vehicle-route computing apparatus

Details Vehicle-route computing apparatus Vehicle-route computing apparatus

1996-09-16

1998-12-01

Nguyen, Tan Q.

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701201, 701202, 340990, 340995, G05D 100, G06F16500

Patent

active

058452281

ABSTRACT:
Routes from a departure area to a plurality of destination areas are found as a departure-area route network data set and a plurality of such departure-area route network data sets computed for all departure areas are then stored in advance in a road-map storing memory unit 4 and a departure-area route network data storing memory unit 5. At a route-search time, a departure-area determining unit 3 determines the departure area of the vehicle to which a departure position pertains and a route-search processing means 7 uses a departure-area route network data set for the departure area determined by the departure-area determining unit 3 as well as road maps of the departure area and the vicinity of a departure position to search for guidance routes from the departure position to the destination position in a short time, presenting the guidance routes to the driver.

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"A Route Search Method Based on Non-Uniformly Divided Rectangles of Road Networks", by Kato et al, article I-387 and 388 on 50th Annual Meeting of Information Processing Society of Japan, 1995 (month is not available).
"A Route Search Method Using Search Areas Restricted Through Knowledge" by Kato et al, article I-389 and 390 on 50th Annual Meeting of Information Processing Society of Japan, 1995 (month is not available).

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