Map display device, a memory medium and a map display method
First Claim
Patent Images
1. A map display device, comprising:
- memory means for storing polygon map data;
drawing processing control means for drawing a polygon map by reading the polygon map data from the memory means; and
display means for displaying an output from the drawing processing control means, wherein the drawing processing control means is equipped with a function for determining a unit of a polygon map that should be drawn and draws a polygon map of the determined unit to distinguish between a plurality of unit levels, wherein the polygon map data has only one unit of polygon data stored with larger polygon map data units drawn from the one unit of polygon data.
1 Assignment
0 Petitions
Accused Products
Abstract
A map display device using an input unit for inputting a display scale, a memory for storing polygon map data, a drawing processing control unit for drawing a polygon map by loading polygon map data from the memory and a display unit for displaying an output from the drawing processing control unit, wherein the drawing processing control unit is provided with a function for determining a unit of a polygon map that should be drawn and drawing a polygon map of the determined unit.
11 Citations
11 Claims
-
1. A map display device, comprising:
-
memory means for storing polygon map data;
drawing processing control means for drawing a polygon map by reading the polygon map data from the memory means; and
display means for displaying an output from the drawing processing control means, wherein the drawing processing control means is equipped with a function for determining a unit of a polygon map that should be drawn and draws a polygon map of the determined unit to distinguish between a plurality of unit levels, wherein the polygon map data has only one unit of polygon data stored with larger polygon map data units drawn from the one unit of polygon data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A computer readable memory medium, wherein the computer readable memory medium stores therein a polygon map database, and programs for determining a unit of a polygon map that should be drawn and drawing a polygon map of the determined unit to distinguish between a plurality of unit levels, wherein the polygon map database has only one unit of polygon data stored with larger polygon map data units drawn from the one unit of polygon data.
-
11. A method for displaying a map, comprising:
-
storing polygon map data; and
displaying a polygon map by reading the stored polygon map data, determining a unit of a polygon map that should be displayed and displaying a polygon map of the determined unit to distinguish between a plurality of unit levels, wherein the polygon map data has only one unit of polygon data stored with larger polygon map data units drawn from the one unit of polygon data.
-
Specification