Map display system
First Claim
1. A map display system comprising:
- a map data storing unit for storing map data used to draw a map and intersection data, wherein the intersection data includes names of roads and data of nodes of the respective roads, wherein each of the nodes includes at least one of an intersecting point, a branching point, and a merging point, wherein a name of a given road and data of nodes of the given road are mutually correlated;
a road name input unit for inputting only a name of a road so as to prevent limitation of the road;
a point designating unit for designating nodes, in ascending order of distances between the respective designated nodes and a given point, with reference to intersection data corresponding to the inputted name of the road; and
a display control unit for displaying on a screen one of the nodes designated by the point designating unit and a peripheral map corresponding to the one of the designated nodes.
1 Assignment
0 Petitions
Accused Products
Abstract
As the name of a given road is inputted, intersecting roads that share nodes such as an intersecting, merging, or branching point with the given road are designated. From the given road'"'"'s nodes shared by the designated intersecting roads, the nearest node to the present position is displayed along with its peripheral map. A portion of the given road that is far from the present position is thereby prevented from being displayed along with its peripheral map. This can eliminate additional manipulation such as changing a reduction scale of the displayed map or repeatedly scrolling the displayed map till an objective point is being displayed. As a result, operationality can be enhanced in designating a point such as an objective point by using a name of a road.
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Citations
20 Claims
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1. A map display system comprising:
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a map data storing unit for storing map data used to draw a map and intersection data, wherein the intersection data includes names of roads and data of nodes of the respective roads, wherein each of the nodes includes at least one of an intersecting point, a branching point, and a merging point, wherein a name of a given road and data of nodes of the given road are mutually correlated; a road name input unit for inputting only a name of a road so as to prevent limitation of the road; a point designating unit for designating nodes, in ascending order of distances between the respective designated nodes and a given point, with reference to intersection data corresponding to the inputted name of the road; and a display control unit for displaying on a screen one of the nodes designated by the point designating unit and a peripheral map corresponding to the one of the designated nodes. - View Dependent Claims (2, 3, 4, 5)
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6. A map display system comprising:
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a map data storing unit for storing map data used to draw a map and intersection data, wherein the intersection data includes names of roads, data of nodes of the respective roads, and names of intersecting roads, wherein each of the nodes includes at least one of an intersecting point, a branching point, and a merging point, wherein a given road shares nodes of the given road with given intersecting roads with which the given road intersects, wherein a name of the given road, data of the nodes of the given road, and names of the given intersecting roads are mutually correlated; a road name input unit for inputting only a name of a road so as to prevent limitation of the road; a road designating unit for designating, with reference to intersection data corresponding to intersecting roads with which the road of the inputted name intersects, the intersecting roads in ascending order of distances between a given point and the respective nodes shared by the intersecting roads; a list displaying control unit for displaying a list of the intersecting roads in the ascending order; a selecting unit for selecting a certain road from the list; and a display control unit for displaying on a screen a certain node that the selected certain road shares with the road of the inputted name and a peripheral map corresponding to the certain node. - View Dependent Claims (7, 8, 9)
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10. A map display system comprising:
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a map data storing unit for storing map data used to draw a map, and data of names and positions of roads that are displayed on the map; a road name input unit for inputting only a name of a road and for not inputting additional information so as to prevent further limiting the road; a position detector for detecting a present position; a point designating unit for designating, of the road having the inputted name, a closest point that has a shortest distance from the detected present position; and a display control unit for displaying on a screen the designated closest point by the point designating unit and a peripheral map corresponding to the designated closest point. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for displaying a map including a road in a map display system in a vehicle, the map displayed based on map data along with data of names and positions of roads, the method comprising:
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detecting a present position of the vehicle; inputting only a name of a certain road, the input of only the name of the certain road accompanied by no additional information further limiting the certain road; designating a closest point associated with the certain road, the closest point designated based on being closest to the detected present position; and displaying the designated closest point and its corresponding peripheral map, on a screen in the vehicle. - View Dependent Claims (18, 19, 20)
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Specification