Navigation apparatus
First Claim
1. A navigation apparatus comprising:
- a storage medium that includes exit direction information based on visual exit direction display provided around an intersection;
a specifying unit that specifies at the intersection an approximate direction of an exit road with respect to an approach road, based on the exit direction information included on the storage medium; and
a display unit that displays the exit road based on the specified approximate direction.
1 Assignment
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Accused Products
Abstract
A storage medium of a car navigation apparatus holds painted road sign information that is linked to a running lane of an approach road around an intersection. Suppose that a direction of an exit road with respect to an approach road at an intersection belongs to a peripheral portion of one of directional areas that are provided to determine at an intersection the approximate direction of the exit road with respect to the approach road. In this case, the approximate direction is specified based on the corresponding painted road sign information. The specified approximate direction is then outputted as a voice and/or image display. Thus, utilizing the painted road sign information can reduce user'"'"'s disagreeable feeling to the approximate direction.
19 Citations
8 Claims
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1. A navigation apparatus comprising:
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a storage medium that includes exit direction information based on visual exit direction display provided around an intersection;
a specifying unit that specifies at the intersection an approximate direction of an exit road with respect to an approach road, based on the exit direction information included on the storage medium; and
a display unit that displays the exit road based on the specified approximate direction. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method used in a navigation apparatus including exit direction information based on visual exit direction display provided around an intersection, the method comprising steps of:
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specifying at the intersection an approximate direction of an exit road with respect to an approach road, based on the exit direction information; and
outputting the exit road based on the specified approximate direction.
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8. A method used in a navigation apparatus including exit direction information based on visual exit direction display provided around an intersection, the method comprising steps of:
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determining whether or not a direction of an exit road with respect to an approach road is included in one of directional areas provided to determine an approximate direction of the exit road with respect to the approach road;
specifying, based on affirmative result in the determining, at the intersection the approximate direction based on the exit direction information when it is determined that the direction of the exit road with respect to the approach road belongs to a peripheral portion of one of the directional areas; and
specifying, based on negative result in the determining, at the intersection the approximate direction based on the exit direction information when it is determined that the direction of the exit road to the approach road belongs to a portion circumscribing one of the directional areas.
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Specification