TRAVEL GUIDANCE SYSTEM, TRAVEL GUIDANCE APPARATUS, TRAVEL GUIDANCE METHOD AND COMPUTER PROGRAM
First Claim
1. A travel guidance system comprising:
- a guide route setting unit that sets a guide route along which a movable object is guided, and a guide branch point on the guide route;
a branch point obtaining unit that obtains both a position of a first branch point that is closer to a point of departure of the guide route than the guide branch point, and a position of a second branch point that is closer to the point of departure than the first branch point;
a guidance setting unit that sets a guidance prompt for the guide branch point to a predetermined guidance prompt selected from among a plurality of potential guidance prompts; and
a branch point guidance unit that performs guidance for the guide branch point using the predetermined guidance prompt selected by the guidance setting unit, whereinthe guidance setting unit sets, for each of the plurality of potential guidance prompts, a guidance starting point that is a point where guidance starts to be spoken and a guidance ending point that is a point by which guidance is required to be finished being spoken;
the guidance starting point is defined by a position between the first branch point and the second branch point, based on one of the first branch point and the second branch point;
the guidance ending point is defined by a position based on one of the first branch point and the guide branch point;
the guidance setting unit determines, for each of the plurality of potential guidance prompts, whether a guidance distance that is a distance from the guidance starting point to the guidance ending point is greater than a speaking travel distance that is a distance traveled by the movable object while guidance is being spoken when performing guidance with the potential guidance prompt; and
the guidance setting unit selects the predetermined guidance prompt from among the plurality of potential guidance prompts, based on the determination result of whether the guidance distance of each potential guidance prompt is greater than the speaking travel distance.
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Accused Products
Abstract
A guidance prompt used for guidance for a guide branch point ahead of a movable object is selected from among a plurality of potential guidance prompts, based on whether a distance from a guidance starting point where guidance starts to a guidance ending point by which guidance is required to be finished is greater than a distance traveled by the movable object while guidance is being spoken. The selected guidance prompt is then set as the guidance prompt for the guide branch point, and guidance for the guide branch point by the set guidance prompt is performed when the movable object reaches the guidance starting point associated with the set guidance prompt.
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Citations
12 Claims
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1. A travel guidance system comprising:
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a guide route setting unit that sets a guide route along which a movable object is guided, and a guide branch point on the guide route; a branch point obtaining unit that obtains both a position of a first branch point that is closer to a point of departure of the guide route than the guide branch point, and a position of a second branch point that is closer to the point of departure than the first branch point; a guidance setting unit that sets a guidance prompt for the guide branch point to a predetermined guidance prompt selected from among a plurality of potential guidance prompts; and a branch point guidance unit that performs guidance for the guide branch point using the predetermined guidance prompt selected by the guidance setting unit, wherein the guidance setting unit sets, for each of the plurality of potential guidance prompts, a guidance starting point that is a point where guidance starts to be spoken and a guidance ending point that is a point by which guidance is required to be finished being spoken; the guidance starting point is defined by a position between the first branch point and the second branch point, based on one of the first branch point and the second branch point; the guidance ending point is defined by a position based on one of the first branch point and the guide branch point; the guidance setting unit determines, for each of the plurality of potential guidance prompts, whether a guidance distance that is a distance from the guidance starting point to the guidance ending point is greater than a speaking travel distance that is a distance traveled by the movable object while guidance is being spoken when performing guidance with the potential guidance prompt; and the guidance setting unit selects the predetermined guidance prompt from among the plurality of potential guidance prompts, based on the determination result of whether the guidance distance of each potential guidance prompt is greater than the speaking travel distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A travel guidance apparatus comprising:
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a guide route setting unit that sets a guide route along which a movable object is guided, and a guide branch point on the guide route; a branch point obtaining unit that obtains both a position of a first branch point that is closer to a point of departure of the guide route than the guide branch point, and a position of a second branch point that is closer to the point of departure than the first branch point; a guidance setting unit that sets a guidance prompt for the guide branch point to a predetermined guidance prompt selected from among a plurality of potential guidance prompts; and a branch point guidance unit that performs guidance for the guide branch point using the predetermined guidance prompt selected by the guidance setting unit, wherein the guidance setting unit sets, for each of the plurality of potential guidance prompts, a guidance starting point that is a point where guidance starts to be spoken and a guidance ending point that is a point by which guidance is required to be finished being spoken; the guidance starting point is defined by a position between the first branch point and the second branch point, based on one of the first branch point and the second branch point; the guidance ending point is defined by a position based on one of the first branch point and the guide branch point; the guidance setting unit determines, for each of the plurality of potential guidance prompts, whether a guidance distance that is a distance from the guidance starting point to the guidance ending point is greater than a speaking travel distance that is a distance traveled by the movable object while guidance is being spoken when performing guidance with the potential guidance prompt; and the guidance setting unit selects the predetermined guidance prompt from among the plurality of potential guidance prompts, based on the determination result of whether the guidance distance of each potential guidance prompt is greater than the speaking travel distance.
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11. A travel guidance method comprising:
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setting a guide route along which a movable object is guided, and a guide branch point on the guide route; obtaining both a position of a first branch point that is closer to a point of departure of the guide route than the guide branch point, and a position of a second branch point that is closer to the point of departure than the first branch point; setting a guidance starting point that is a point where guidance starts to be spoken and a guidance ending point that is a point by which guidance is required to be finished being spoken, for each of the plurality of potential guidance prompts; determining whether a guidance distance that is a distance from the guidance starting point to the guidance ending point is greater than a speaking travel distance that is a distance traveled by the movable object while guidance is being spoken when performing guidance with the potential guidance prompt, for each of the plurality of potential guidance prompts; setting a guidance prompt for the guide branch point to a predetermined guidance prompt selected from among a plurality of potential guidance prompts, based on the determination result of whether the guidance distance of each potential guidance prompt is greater than the speaking travel distance; and performing guidance for the guide branch point using the predetermined guidance prompt, wherein the guidance starting point is defined by a position between the first branch point and the second branch point, based on one of the first branch point and the second branch point, and the guidance ending point is defined by a position based on one of the first branch point and the guide branch point.
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12. A computer program that is installed on a computer and that causes a processor to perform a travel guidance function, the travel guidance function comprising:
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setting a guide route along which a movable object is guided, and a guide branch point on the guide route; obtaining both a position of a first branch point that is closer to a point of departure of the guide route than the guide branch point, and a position of a second branch point that is closer to the point of departure than the first branch point; setting a guidance starting point that is a point where guidance starts to be spoken and a guidance ending point that is a point by which guidance is required to be finished being spoken, for each of the plurality of potential guidance prompts; determining whether a guidance distance that is a distance from the guidance starting point to the guidance ending point is greater than a speaking travel distance that is a distance traveled by the movable object while guidance is being spoken when performing guidance with the potential guidance prompt, for each of the plurality of potential guidance prompts; setting a guidance prompt for the guide branch point to a predetermined guidance prompt selected from among a plurality of potential guidance prompts, based on the determination result of whether the guidance distance of each potential guidance prompt is greater than the speaking travel distance; and performing guidance for the guide branch point using the predetermined guidance prompt, wherein the guidance starting point is defined by a position between the first branch point and the second branch point, based on one of the first branch point and the second branch point, and the guidance ending point is defined by a position based on one of the first branch point and the guide branch point.
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Specification