Navigation apparatus for vehicle
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United States of America Patent
Stats
-
Jul 14, 1992
Issued Date -
N/A
app pub date -
Apr 16, 1991
filing date -
Dec 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
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