Navigation apparatus for vehicle

Details Navigation apparatus for vehicle Navigation apparatus for vehicle

1991-04-16

1992-07-14

Ng, Jin F.

Communications: electrical

Vehicle position indication

Map display

73178R, 340990, 358103, 364449, G08G 112

Patent

active

051307090

ABSTRACT:
A navigation apparatus for a vehicle according to the present invention is designed to compare the distance from the previous intersection or feature to a further feature with the value from an odometer (2) and then to forcibly zero the remaining distance to the further feature when the difference between the distance and the value of the odometer becomes equal to or smaller than a predetermined value and when the feature is detected by a radar (12) or a road surface sensor (13). In consequence, even if the vehicle has to travel a long distance before it reaches an intersection where it makes a turn, a correct travelled distance can be obtained by correcting the distance detection errors as each feature is detected, thereby enabling a correct present position to be detected.

REFERENCES:
patent: 3775743 (1973-11-01), Carter
patent: 4774671 (1988-09-01), Itoh et al.
patent: 4774672 (1988-09-01), Tsunada et al.
patent: 4812845 (1989-03-01), Yamada et al.
patent: 4827420 (1989-05-01), Musa
patent: 4862047 (1989-08-01), Suzuki et al.
patent: 4937751 (1990-06-01), Nimura et al.
patent: 4996645 (1991-02-01), Schneyderberg Van Der Zon

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