Navigation system

Details Navigation system Navigation system

1995-07-18

1997-12-30

Chin, Gary

Boots, shoes, and leggings

340990, 340995, G06F16500

Patent

active

057037809

ABSTRACT:
A navigation system comprises a vehicle position detecting unit for determining the present position of a vehicle from the amount of change in vehicle bearing and a distance traveled by the vehicle, a forward road data storage unit for reading a road existing ahead of the present vehicle position from a map data storage unit based on the present vehicle position detected by the vehicle position detecting unit and storing it therein as data, a change-in-road detecting unit for detecting a change-in-road section in which the orientation of the road greatly varies, from the stored forward road data and judging whether the change-in-road section exists within a range in which a notification is required, and a notification unit for notifying the present vehicle position to a driver and notifying a change-in-road section in which the notification has been judged necessary, to the driver.

REFERENCES:
patent: 4679147 (1987-07-01), Tsujii et al.
patent: 4882696 (1989-11-01), Nimura et al.
patent: 5043902 (1991-08-01), Yokoyama et al.
patent: 5398189 (1995-03-01), Inoue et al.
patent: 5410486 (1995-04-01), Kishi et al.
patent: 5444629 (1995-08-01), Kishi et al.
patent: 5539397 (1996-07-01), Asanuma et al.
patent: 5546311 (1996-08-01), Sekine

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