Vehicle-guiding device for recognizing curved road and leading vehicle along curved road aurally
First Claim
1. A device for leading a vehicle along a route to a destination by issuing voice guidance at junctions of said route, said device comprising:
- map information storage means for storing map information including information about structures of said junctions;
judging means for judging, before said vehicle reaches a junction on a current road of said route, whether or not said junction on said route includes a curved road on a basis of said map information, said curved road being connected to said junction at an angle less than a predetermined angle, said angle of said curved road being measured with respect to directions of said current road and said curved road;
voice expression deciding means for deciding, before said vehicle reaches said junction on said route, a guidance voice expression on a basis of said direction of said curved road; and
voice outputting means for outputting a voice in accordance with said guidance voice expression decided by said voice expression deciding means.
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Accused Products
Abstract
A voice expression selection processing section recognizes a route from data from a route memory. When a vehicle has reached a junction, it is judged whether or not a curved road is present at the junction on the basis of connecting road number data from a junction data storage section, connecting angle data and connecting road width data. The content of the voice expression is changed in accordance with a case where the curved road is present or another case where the curved road is absent. Particularly, when the curved road is present, the direction of this curved road is added as a base of the voice expression. Therefore, the voice expression which matches with the feeling of a driver can be carried out to achieve suitable car guidance.
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Citations
12 Claims
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1. A device for leading a vehicle along a route to a destination by issuing voice guidance at junctions of said route, said device comprising:
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map information storage means for storing map information including information about structures of said junctions; judging means for judging, before said vehicle reaches a junction on a current road of said route, whether or not said junction on said route includes a curved road on a basis of said map information, said curved road being connected to said junction at an angle less than a predetermined angle, said angle of said curved road being measured with respect to directions of said current road and said curved road; voice expression deciding means for deciding, before said vehicle reaches said junction on said route, a guidance voice expression on a basis of said direction of said curved road; and voice outputting means for outputting a voice in accordance with said guidance voice expression decided by said voice expression deciding means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11)
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9. A device for leading a vehicle along a route to a destination by issuing voice guidance a junctions of said route, said device comprising:
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map information storage means for storing map information including information about structures of said junctions; judging means for judging whether or not a junction on said route includes a curved road on a basis of data regarding roads connected to said junction; voice expression deciding means for deciding a guidance voice expression on a basis of said curved road; and Voice outputting means for outputting a voice in accordance with said guidance voice expression decided by said voice expression deciding means, when said vehicle approaches said junction; wherein said voice expression deciding means judges whether or not said decided guidance voice expression is confusing from said map information in accordance with a road on said route connected at said junction, and if said guidance voice expression is judged to be confusing, said voice expression deciding means adds a confirm guidance voice expression with said decided guidance voice expression, said confirm guidance voice expression being an expression urging a driver of said vehicle to confirm the decided guidance voice expression with said guidance displayed in a display.
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12. A device for leading a vehicle along a route to a destination by issuing voice guidance at junctions on curved roads of said route, said device comprising:
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map information storage means for storing map information including information as to whether or not each junction includes a curved road, wherein said curved road is connected to a junction at an angle less than a predetermined angle; judging means for judging, before said vehicle reaches said junction on said route, whether or not said junction on said route includes a curved road on a basis of said map information; voice expression deciding means for deciding, before said vehicle reaches said junction on said route, a guidance voice expression on a basis of an angle measured from a direction of said curved road; and voice outputting means for outputting a voice in accordance with said guidance voice expression decided by said voice expression deciding means.
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Specification