NAVIGATION APPARATUS
First Claim
1. A navigation apparatus which performs route guidance to a vehicle, the navigation apparatus comprising:
- a ready-made road data storage portion that stores road data of existing roads in a ready-made map, the road data of the existing roads being used in route guidance;
a learned road data storage portion that stores road data of a learned road, and auxiliary link data connecting a link of the learned road and a link of an existing road, the road data of the learned road and the auxiliary link data being used in route guidance;
a learned road detection section that detects a detected learned road based on a traveling locus from a withdrawal-point where a running position of the vehicle withdraws from an existing road stored in the ready-made road data storage portion to a return-point where the running position of the vehicle returns to an existing road stored in the ready-made road data storage portion, the learned road detection section generating road data related to a link of the detected learned road and end nodes of the link of the detected learned road;
an auxiliary link data generation section that generates auxiliary link data based on road data of a base link that is defined as a link of the existing road connected with the detected learned road, the auxiliary link data relating to an auxiliary link, which connects one end of the base link and a connection point between the existing road and the detected learned road, and auxiliary end nodes of the auxiliary link, the auxiliary link data also relating to an other auxiliary link, which connects an other end of the base link and the connection point between the existing road and the detected learned road, and auxiliary end nodes of the other auxiliary link; and
a recording section that records (i) the road data of the detected learned road generated by the learned road detection section and (ii) the auxiliary link data generated with respect to the detected learned road by the auxiliary link data generation section in the learned road data storage portion.
1 Assignment
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Accused Products
Abstract
When a vehicle runs in a region other than existing roads stored as ready-made map data, learned road data is generated based on a traveling locus. Further, an existing road connected with the learned road is defined as a base link. The base link is copied and divided, to generate auxiliary link data to define a connection status between the learned road and the existing road in an auxiliary way. The learned road data and the auxiliary link data are recorded in association with each other. The auxiliary link data is used in navigation-related processing as a substitute for road data related to the existing road connected with the learned road. With this configuration, the existing road and the learned road are logically connected, to supplement consistency in a map containing the learned road without partially changing the ready-made map data.
66 Citations
9 Claims
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1. A navigation apparatus which performs route guidance to a vehicle, the navigation apparatus comprising:
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a ready-made road data storage portion that stores road data of existing roads in a ready-made map, the road data of the existing roads being used in route guidance; a learned road data storage portion that stores road data of a learned road, and auxiliary link data connecting a link of the learned road and a link of an existing road, the road data of the learned road and the auxiliary link data being used in route guidance; a learned road detection section that detects a detected learned road based on a traveling locus from a withdrawal-point where a running position of the vehicle withdraws from an existing road stored in the ready-made road data storage portion to a return-point where the running position of the vehicle returns to an existing road stored in the ready-made road data storage portion, the learned road detection section generating road data related to a link of the detected learned road and end nodes of the link of the detected learned road; an auxiliary link data generation section that generates auxiliary link data based on road data of a base link that is defined as a link of the existing road connected with the detected learned road, the auxiliary link data relating to an auxiliary link, which connects one end of the base link and a connection point between the existing road and the detected learned road, and auxiliary end nodes of the auxiliary link, the auxiliary link data also relating to an other auxiliary link, which connects an other end of the base link and the connection point between the existing road and the detected learned road, and auxiliary end nodes of the other auxiliary link; and a recording section that records (i) the road data of the detected learned road generated by the learned road detection section and (ii) the auxiliary link data generated with respect to the detected learned road by the auxiliary link data generation section in the learned road data storage portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A program product stored in a non-transitory computer readable storage medium comprising instructions for execution by a computer, the instructions including a computer-implemented method for a navigation apparatus providing route guidance to a vehicle using road data indicating links and end nodes of the links relative to roads,
the navigation apparatus including (i) a ready-made road data storage portion in which existing road data relative to existing roads on a ready-made map is stored, and (ii) a learned road data storage portion in which road data relative to learned roads is stored, the instructions for implementing: -
a step of detecting a new learned road, which is not stored in the ready-made road data storage portion, based on a traveling locus from a withdrawal-point where a running position of the vehicle withdraws from a withdrawal existing link of a withdrawal existing road stored in the ready-made road data storage portion to a return-point where the running position of the vehicle returns to a return existing link of a return existing road stored in the ready-made road data storage portion; a step of generating learned road data of the new learned road, the learned road data indicating (i) a learned link of the new learned road and (ii) first and second learned end nodes of the learned link of the new learned road; a step of defining each of the withdrawal existing link and the return existing link as a base link while defining each of the withdrawal-point and the return-point as a connection point; a step of generating, based on road data relative to the base link stored in the ready-made road data storage portion, auxiliary link data with respect to each connection point of the base link, the auxiliary link data indicating (i) a first auxiliary link, which connects the each connection point with one of two end nodes of the base link, and two auxiliary end nodes of the first auxiliary link and (ii) a second auxiliary link, which connects the each connection point with an other of the two end nodes of the base link, and two auxiliary end nodes of the second auxiliary link; and a step of recording, with respect to the new learned road, the learned road data and the auxiliary link data in association with each other in the learned road data storage portion.
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Specification