Communications: electrical – Vehicle position indication – Map display
Patent
1997-10-30
2000-03-07
Swarthout, Brent A.
Communications: electrical
Vehicle position indication
Map display
340990, 701209, 701210, G08G 1123
Patent
active
060346264
ABSTRACT:
The present invention provides a navigation system for guiding a driver along an optimum route by comparing a route with preference on the traveling direction of a vehicle with a route with no preference on the traveling direction thereof when the driver is guided from the current position thereof up to a destination. To search for a route, a first route with preference on the traveling direction of a vehicle is calculated (1) and then, a second route with no preference on the traveling direction thereof is calculated (2). An appropriate route is selected from found routes according to a predetermined setting condition (3) and displayed on screen. The setting condition includes comparison of distances of respective routes and time lengths required for traveling thereon, ease of traveling, width and type of roads, scenery and the like. In a case where distances of the respective routes, for example, are compared with each other, if the distance of the first route is longer than the second route by at least a predetermined value, the second route is displayed, and if the first route is not longer than the second route by at least the predetermined value, the first route is displayed.
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patent: 5550538 (1996-08-01), Fujii et al.
patent: 5608635 (1997-03-01), Tamai
patent: 5652706 (1997-07-01), Morimoto et al.
patent: 5774073 (1998-06-01), Maekawa et al.
patent: 5821880 (1998-10-01), Morimoto et al.
Hiyokawa Toyoji
Kanemitsu Hiroyuki
Maekawa Kazuteru
Aisin AW Co., Ltd
Swarthout Brent A.
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