Navigation system
First Claim
Patent Images
1. A navigation system comprising:
- a monitor screen operable to display images;
a map-image drawing unit operable to generate map image data for presentation of a map image in a window on the monitor screen;
a simple-map drawing unit operable to generate simple-map image data for presentation of a simple map image of a main road extending outside of the window; and
an image combining unit operable to display the map image inside the window and the simple image of the main road outside of the window on the monitor screen;
wherein the map image in the window is presented in greater detail than the simple map image located outside of the window.
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Abstract
In a navigation system, a detailed map of an area surrounding the vehicle is displayed in a window on a monitor on the scale designated by a user, and main roads extending outside the map displayed in the window are displayed in a deformed image around the window, so that the map of the surrounding area is displayed in detail, and only the main roads are simply displayed outside the window. This allows the user to grasp detailed information about the area surrounding the vehicle, main roads ahead of the vehicle, and the connections between the vehicle and the main roads at a glance at a single window.
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Citations
16 Claims
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1. A navigation system comprising:
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a monitor screen operable to display images;
a map-image drawing unit operable to generate map image data for presentation of a map image in a window on the monitor screen;
a simple-map drawing unit operable to generate simple-map image data for presentation of a simple map image of a main road extending outside of the window; and
an image combining unit operable to display the map image inside the window and the simple image of the main road outside of the window on the monitor screen;
wherein the map image in the window is presented in greater detail than the simple map image located outside of the window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A navigation system comprising:
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a monitor screen operable to display a map image;
a window portion provided at a predetermined position on the monitor screen operable to display a map image generated in a designated scale;
an simple image potion of the monitor screen external to the window portion operable to display a simple map image of a main road extending outside a the window. - View Dependent Claims (13)
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14. A method for displaying map image information, said method comprising the acts of:
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providing a vehicle;
providing a navigation system inside said vehicle, said navigation system including a monitor screen operable to display map images;
identifying intersections with a main road within a predetermined distance of the vehicle;
determining shape of road based on the intersections and on road links linking the intersections;
generating simplified map data for display outside of a predetermined portion of said monitor screen. - View Dependent Claims (15, 16)
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Specification