ELECTRONIC MAP APPARATUS AND ELECTRONIC MAP DISPLAY METHOD
First Claim
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1. An electronic map apparatus comprising:
- data fetching means for fetching map data from media for storing said map data to be displayed as a map;
a display device for displaying said map in accordance with said map data; and
a microcomputer for processing, to display said map in a perspective view, data of a circle or an arc which has a center at a specified point on said map and links points on said map at equal geographical distances from said center.
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Abstract
In an electronic map apparatus, an electronic map is displayed in accordance with map data read out from a DVD-ROM. Then, distance display circles which have a common center located at a point on the electronic map and each interconnect points on the electronic map at equal geographical distances from the point are drawn.
As a result, it is possible to know an approximate geographical distance to a destination intuitively and easily in the electronic map apparatus which is typically used for car navigation.
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Citations
15 Claims
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1. An electronic map apparatus comprising:
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data fetching means for fetching map data from media for storing said map data to be displayed as a map; a display device for displaying said map in accordance with said map data; and a microcomputer for processing, to display said map in a perspective view, data of a circle or an arc which has a center at a specified point on said map and links points on said map at equal geographical distances from said center. - View Dependent Claims (8)
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2. An electronic map apparatus comprising:
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data fetching means for fetching map data from media for storing said map data to be displayed as a map; a display device for displaying said map in accordance with said map data; and a microcomputer for processing data of a circle or an arc which has a center at a specified point on said map and links points on said map at equal geographical distances from said center, wherein said circle or said arc is displayed on said map displayed on said display device in a perspective view in accordance with said data processed by said microcomputer when said map is displayed on said display device. - View Dependent Claims (3, 4, 5, 6, 7)
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9. An electronic map display method comprising the steps of:
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fetching map data from predetermined media for storing said map data to be displayed as a map; displaying said map on a display device in a perspective view in accordance with said map data; and displaying a circle or an arc, which has a center at a specified point on said map and links points on said map at equal geographical distances from said center, on said map displayed on a display device in a perspective view. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification