MAP DATA UPDATE SYSTEM, MAP DATA UPDATE METHOD, COMPUTER-READABLE STORAGE MEDIUM STORING MAP DATA UPDATE PROGRAM
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Abstract
A map data update system includes a first storage portion that stores road network data that describes a road in terms of a connection relationship between a node and a link; an update portion that receives update data and updates the road network data based on the update data; a data obtaining portion that obtains additional data by a means that differs from a means that receives the update data; a second storage portion that stores the additional data including association information that indicates association between the additional data and the link; and a correcting portion that, when update processing of the road network data is executed by the update portion, the association information in the additional data that is associated with the link that is changed by the update processing.
22 Citations
33 Claims
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1-18. -18. (canceled)
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19. A map data update system, characterized by comprising:
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a first storage portion that stores road network data that describes a road in terms of a connection relationship between a node that corresponds to an intersection and a link that corresponds to a road that connects intersections; an update portion that receives update data that reflects changes in an actual road and updates the road network data based on the update data; a data obtaining portion that obtains additional data by a means that is provided in a vehicle; a second storage portion that stores the additional data that is obtained by the data obtaining portion together with association information that indicates association between the additional data and the link; and a correcting portion that, when update processing of the road network data is executed by the update portion, corrects the association information in the additional data that is stored in the second storage portion and is associated with the link that is changed by the update processing, wherein the correcting portion compares a link end coordinate and a link direction of the post-update link to a link end coordinate and a link direction of the pre-update link and corrects the association information based on the result of the comparison. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A map data update method, characterized by comprising:
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storing road network data that describes a road in terms of a connection relationship between a node that corresponds to an intersection and a link that corresponds to a road that connects intersections; receiving update data that reflects changes in an actual road and updating the road network data based on the update data; obtaining additional data by a means that differs from a means that receives the update data; storing the additional data together with association information that indicates association between the additional data and the link; and correcting, when update processing of the road network data is executed by the update portion, the association information in the additional data that is stored in the second storage portion and is associated with the link that is changed by the update processing, wherein, in the correcting step, a link end coordinate and a link direction of the post-update link are compared to a link end coordinate and a link direction of the pre-update link, and then the association information is corrected based on the result of the comparison.
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33. A computer-readable storage medium storing a map data update program, the program being characterized by comprising:
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storing road network data that describes a road in terms of a connection relationship between a node that corresponds to an intersection and a link that corresponds to a road that connects intersections; receiving update data that reflects changes in an actual road and updating the road network data based on the update data; obtaining additional data by a means that differs from a means that receives the update data; storing the additional data together with association information that indicates association between the additional data and the link; and correcting, when update processing of the road network data is executed by the update portion, the association information in the additional data that is stored in the second storage portion and is associated with the link that is changed by the update processing, wherein, in the correcting step, a link end coordinate and a link direction of the post-update link are compared to a link end coordinate and a link direction of the pre-update link, and then the association information is corrected based on the result of the comparison.
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Specification