Computer product having distribution map data, distribution map data generating method, distrubution map data generating apparatus and terminal device
First Claim
Patent Images
1. A computer readable storage medium having stored therein distribution map data used to distribute a map through communication, the distribution map data comprising:
- road data in correspondence to each of a plurality of map area blocks, the map area blocks ranging over individual areas of the map which are equal to one another in size, wherein the road data provides position information indicating positions of roads within the map area blocks; and
integrated name data that provides common name information for a road, such that the integrated name data provides a single set of name data for the road for use in all of the map area blocks in which the road is present, wherein;
the distribution map data includes the road data in each of a plurality of map layers set in correspondence to different specific scaling factors, each of the scaling factors having been set in accordance with ratios of distances between points as represented on the corresponding map layer and the actual distances between the points; and
the integrated name data provides the common name information such that the integrated name data provides the single set of name data in the plurality of the map layers.
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Abstract
Distribution map data for distributing a map by communication includes road data representing position information on the roads contained in a plurality of compartments and integrating name data for integrating name information for the same roads contained in the plurality of compartments without duplicating them.
14 Citations
19 Claims
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1. A computer readable storage medium having stored therein distribution map data used to distribute a map through communication, the distribution map data comprising:
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road data in correspondence to each of a plurality of map area blocks, the map area blocks ranging over individual areas of the map which are equal to one another in size, wherein the road data provides position information indicating positions of roads within the map area blocks; and integrated name data that provides common name information for a road, such that the integrated name data provides a single set of name data for the road for use in all of the map area blocks in which the road is present, wherein; the distribution map data includes the road data in each of a plurality of map layers set in correspondence to different specific scaling factors, each of the scaling factors having been set in accordance with ratios of distances between points as represented on the corresponding map layer and the actual distances between the points; and the integrated name data provides the common name information such that the integrated name data provides the single set of name data in the plurality of the map layers.
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2. A distribution map data generating method for generating distribution map data used to distribute a map through communication, comprising:
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extracting road data and name data over map area blocks, the map area blocks ranging over individual areas of the map which are equal to one another in size so as to indicate a route passing through the map area blocks, from road map data that provides position information indicating positions of roads in each of the map area blocks and that provides name information indicating names of the roads in each of the map area blocks; generating integrated name data by integrating name information for a road in the extracted name data, so as to provide common name information for the road such that the integrated name data provides a single set of name data for the road for use in all of the map area blocks through which the route passes; and generating the distribution map data by using the extracted road data and the integrated name data. - View Dependent Claims (3, 4, 5)
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6. A distribution map data generating apparatus that generates distribution map data used to distribute a map through communication, comprising:
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a storage device that stores road map data that provides position information and name information, the position information indicating positions of roads in each of map area blocks, the map area blocks ranging over individual areas of the map which are equal to one another in size, and the name information indicating names of the roads in each of the map area blocks; an extraction device that extracts road data and name data over the map area blocks to indicate a route passing through the map area blocks based upon the road map data; an integrating device that generates integrated name data by integrating name information for a road in the name data extracted by the extraction device so as to provide common name information for the road, such that the integrated name data provides a single set of name data for the road for use in all of the map area blocks through which the route passes; and a generating device that generates the distribution map data by using the road data extracted by the extraction device and the integrated name data. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification