Navigation apparatus
First Claim
1. A navigation apparatus comprising:
- a building/landmark image forming unit for substantially opaquely and three-dimensionally displaying buildings on a map;
a navigation route drawing unit for displaying a navigation route on a road;
a navigation route obstructed-by-building detection unit for detecting a portion of the navigation route obstructed by the buildings displayed three-dimensionally; and
a modified navigation route drawing unit for lifting the portion of the navigation route obstructed by the buildings on or above the obstructing buildings and displaying the portion of the navigation route.
1 Assignment
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Accused Products
Abstract
A navigation route obstructed-by-building detection unit detects that a navigation route is obstructed by buildings, and a modified navigation route drawing unit in a navigation route drawing unit displays the navigation route by lifting it on or above the buildings. At the time, a ratio of obstructed portion calculating unit calculates the ratio of the portion of the navigation route obstructed by the buildings, and a display of navigation route in lifted state discriminating unit determines whether or not the ratio is equal to or larger than a predetermined value. When the ratio is equal to or larger than the predetermined value, an amount of navigation route displayed in lifted state calculating unit calculates a lifting amount, and a modified navigation route drawing unit displays the navigation route by lifting it by the lifting amount. Thereafter, a building/landmark image forming unit semi-transparently draws the portion of the buildings corresponding to the portion of the navigation route that is lifted and displayed. With the above arrangement, a user can easily observe the navigation route which is otherwise poor in observability.
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Citations
12 Claims
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1. A navigation apparatus comprising:
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a building/landmark image forming unit for substantially opaquely and three-dimensionally displaying buildings on a map;
a navigation route drawing unit for displaying a navigation route on a road;
a navigation route obstructed-by-building detection unit for detecting a portion of the navigation route obstructed by the buildings displayed three-dimensionally; and
a modified navigation route drawing unit for lifting the portion of the navigation route obstructed by the buildings on or above the obstructing buildings and displaying the portion of the navigation route. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A navigation route display method of a navigation apparatus comprising:
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calculating a navigation route to a destination;
displaying buildings substantially opaquely and three-dimensionally on a map;
three-dimensionally displaying the navigation route on a road;
detecting a portion of the navigation route obstructed by the buildings; and
lifting the obstructed portion of the navigation route on or above the buildings and displaying it. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification