Navigation system

Details Navigation system Navigation system

1994-10-31

1996-08-27

Swarthout, Brent A.

Communications: electrical

Vehicle position indication

Map display

340990, 364449, G08G 1123

Patent

active

055505384

ABSTRACT:
A navigation system mounted on a vehicle computes in advance an optimal route from a starting point to a destination. When the vehicle travels off the optimal route, the navigation system detects an off-route deviation. When an off-route deviation is detected, the system computes a restoration route from the vehicle's present position to a selected point on the optimal route and rapidly displays navigational information to guide the vehicle thereto. Thus there is no need for the system to compute a new optimal route from the present position to the destination, and there is no delay in supplying the driver with navigational information.

REFERENCES:
patent: 4992947 (1991-02-01), Nimura et al.
patent: 5043902 (1991-08-01), Yokoyama et al.
patent: 5220507 (1993-06-01), Kirson
patent: 5243528 (1993-09-01), Lefebvre
patent: 5262775 (1993-11-01), Tamai et al.
patent: 5291412 (1994-03-01), Tamai et al.
patent: 5291413 (1994-03-01), Tamai et al.

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