MAP DISPLAY SYSTEM, MAP DISPLAY METHOD FOR MAP DISPLAY SYSTEM, MAP DISPLAY DEVICE, AND PROGRAM
First Claim
1. A map display system comprising:
- a database for storing map data; and
display means for displaying a planar map image or a bird'"'"'s-eye view map image on the basis of map data acquired from the database for storing map images;
the map display system being characterized in comprising;
image data creating means for creating image data on a planar map or image data on a bird'"'"'s-eye view map obtained by subjecting the planar map to projection transformation at a predetermined display width coefficient;
drawing means for drawing said image data on the planar map or image data on the bird'"'"'s-eye view map; and
display width coefficient control means; and
when said image data on the bird'"'"'s-eye view map is created, said display width coefficient control means controls said image data creating means so that roads on the planar map undergo projection transformation at a display width coefficient that is larger than said predetermined display width coefficient, and said display means displays the image data drawn by said drawing means.
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Accused Products
Abstract
When a bird'"'"'s-eye view map showing roads, the roads are emphatically displayed. A map display system comprises a database storing map data and display means for displaying an image of a planar map or a bird'"'"'s-eye view according to the map data acquired from the database storing map image. The map display system further comprises image data creating means for creating image data on a planar map or image data on a bird'"'"'s-eye view map created by projection transformation of a planar map with a predetermined display width coefficient, drawing means for drawing a map on basis of the image data on the planar map or the bird'"'"'s-eye view map, and display width coefficient control means. When the image data on the bird'"'"'s-eye view map is created, the display width coefficient control means controls image data creating means so that the roads shown on the planar map undergo projection transformation with a display width coefficient larger than the predetermined display width coefficient, and the display means displays the map of the image data drawn by the drawing means.
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Citations
8 Claims
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1. A map display system comprising:
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a database for storing map data; and display means for displaying a planar map image or a bird'"'"'s-eye view map image on the basis of map data acquired from the database for storing map images;
the map display system being characterized in comprising;image data creating means for creating image data on a planar map or image data on a bird'"'"'s-eye view map obtained by subjecting the planar map to projection transformation at a predetermined display width coefficient; drawing means for drawing said image data on the planar map or image data on the bird'"'"'s-eye view map; and display width coefficient control means; and when said image data on the bird'"'"'s-eye view map is created, said display width coefficient control means controls said image data creating means so that roads on the planar map undergo projection transformation at a display width coefficient that is larger than said predetermined display width coefficient, and said display means displays the image data drawn by said drawing means. - View Dependent Claims (2)
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3. A map display method in a map display system comprising a database for storing map data, and display means for displaying a planar map image or a bird'"'"'s-eye view map image on the basis of map data acquired from said database in which map images are stored;
- the map display method being characterized in that;
the map display system is provided with image data creating means for creating image data on a planar map or image data on a bird'"'"'s-eye view map obtained by subjecting the planar map to projection transformation at a predetermined display width coefficient, drawing means for drawing said image data on the planar map or image data on the bird'"'"'s-eye view map, and display width coefficient control means; and
the method having;a step in which map data is acquired from said database for storing map images; a step in which said display width coefficient control means controls said image data creating means so that when said bird'"'"'s eye view image data is created, roads on the planar map undergo projection transformation at a display width coefficient that is larger than said predetermined display width coefficient; and a step in which the image data drawn by the drawing means is displayed by the display means. - View Dependent Claims (4)
- the map display method being characterized in that;
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5. A map display device which is connected via a network to a route seek server having a database for storing map data;
- said map display device characterized in comprising;
display means for displaying planar map images or bird'"'"'s-eye view map images on the basis of map data acquired from said database for storing map images; and
further comprising;image data creating means for creating image data on a planar map, or image data on a bird'"'"'s-eye view map obtained by subjecting the planar map to projection transformation at a predetermined display width coefficient; drawing means for drawing said image data on the planar map or image data on the bird'"'"'s-eye view map; and display width coefficient control means; and when image data on the bird'"'"'s-eye view map is created, said display width coefficient control means controls said image data creating means so that roads on the planar map undergo projection transformation at a display width coefficient that is greater than said predetermined display width coefficient, and said display means displays the image data that is drawn by said drawing means. - View Dependent Claims (6)
- said map display device characterized in comprising;
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7. A program, characterized in that
a computer which constitutes a map display device connected via a network to a route seek server having a database for storing map data, and which comprises display means for displaying a planar map image or a bird'"'"'s-eye view map image on the basis of map data acquired from said database for storing map images, image data creating means for creating image data on a planar map or image data on a bird'"'"'s-eye view map obtained by subjecting the planar map to projection transformation at a predetermined display width coefficient, drawing means for drawing said image data on the planar map or image data on the bird'"'"'s-eye view map, and display width coefficient control means, is caused to execute a process as said display width coefficient control means for controlling said image data creating means so that when said image data on the bird'"'"'s-eye view map is created, roads on said planar map undergo projection transformation at a display width coefficient that is greater than said predetermined display width coefficient; - and a process for displaying the image data drawn by said drawing means on said display means.
- View Dependent Claims (8)
Specification