Navigation Apparatus
First Claim
1. A navigation apparatus, comprising:
- a map information storage unit that stores road information related to roads;
a position estimation unit that estimates the position of the vehicle;
a map matching unit that, using the road information, specifies a plurality of link candidate points corresponding to the position of the vehicle as estimated by the position estimation unit;
a parallel roads determination unit that, on the basis of the plurality of link candidate points, detects links of parallel roads that extend mutually parallel to one another;
a traveling link determination unit that, for each link of the parallel roads detected by the parallel roads determination unit, determines whether it is a traveling link upon which the vehicle is traveling, or a parallel link that extends parallel to the traveling link; and
a link position correction unit that obtains position correction amounts for nodes of the traveling link and of the parallel link on the basis of the distance between the one of the plurality of link candidate points that corresponds to the traveling link, and the position of the vehicle as estimated by the position estimation unit.
1 Assignment
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Accused Products
Abstract
A navigation apparatus includes: a map information storage unit that stores road information; a position estimation unit that estimates the position of the vehicle; a map matching unit that specifies link candidate points corresponding to the position of the vehicle; a parallel roads determination unit that detects links of parallel roads that extend mutually parallel to one another; a traveling link determination unit that, for each link of the parallel roads, determines whether it is a traveling link upon which the vehicle is traveling, or a parallel link that extends parallel to the traveling link; and a link position correction unit that obtains position correction amounts for nodes of the traveling link and of the parallel link on the basis of the distance between the link candidate point that corresponds to the traveling link and the position of the vehicle.
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Citations
9 Claims
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1. A navigation apparatus, comprising:
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a map information storage unit that stores road information related to roads; a position estimation unit that estimates the position of the vehicle; a map matching unit that, using the road information, specifies a plurality of link candidate points corresponding to the position of the vehicle as estimated by the position estimation unit; a parallel roads determination unit that, on the basis of the plurality of link candidate points, detects links of parallel roads that extend mutually parallel to one another; a traveling link determination unit that, for each link of the parallel roads detected by the parallel roads determination unit, determines whether it is a traveling link upon which the vehicle is traveling, or a parallel link that extends parallel to the traveling link; and a link position correction unit that obtains position correction amounts for nodes of the traveling link and of the parallel link on the basis of the distance between the one of the plurality of link candidate points that corresponds to the traveling link, and the position of the vehicle as estimated by the position estimation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A navigation apparatus, comprising:
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a map information storage unit that stores road information related to roads; a screen and audio output unit that displays a road map using the road information; a traveling position indication unit that indicates the road upon which the vehicle is traveling on the basis of input from the user; a traveling link determination unit that, on the basis of indication from the traveling position indication unit, determines whether it is the traveling link upon which the vehicle is traveling, or a parallel link that extends parallel to the traveling link; and a link position correction unit that corrects the position of the traveling link and the parallel link;
wherein;the screen and audio output unit shifts the traveling link and the parallel link upon the road map, so as to match their positions after correction by the link position correction unit.
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Specification