Vehicle route guidance apparatus for re-searching for a new rout

Details Vehicle route guidance apparatus for re-searching for a new rout Vehicle route guidance apparatus for re-searching for a new rout

1993-07-23

1996-09-24

Hofsass, Jeffery

Communications: electrical

Vehicle position indication

Map display

340988, 340990, 340460, 304444, 304443, 304447, G08G 1123

Patent

active

055595111

ABSTRACT:
A route guidance section compares the current position provided by a current position determination section and the route provided by a route calculation section for detecting an off-route condition. When the off-route condition is detected, a researching key as well as the route and current place is displayed on a display section. When the researching key is touched, a search is again made for a new route from the current position to the destination. Then, route guidance is again started in response to the researching result. When the researching key is not touched, the route and current place continue to be displayed while the vehicle carrying the apparatus travles off route, thereby efficiently preventing the apparatus from executing unnecessary researching when the driver drives the vehicle off route on purpose.

REFERENCES:
patent: 4679147 (1987-07-01), Tsujii et al.
patent: 5043902 (1991-08-01), Yokoyama et al.
patent: 5243528 (1993-09-01), Lefebvre

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