Map display system, method, and program
First Claim
1. A map display system that displays a map on a display section, the map display system comprising:
- narrow-angle branch intersection determination software code for determining whether or not a guide target intersection is a narrow-angle branch intersection at which an intersection angle between roads is smaller than a predetermined threshold; and
a scale-changed view display for displaying a scale-changed view, which is obtained by changing a scale of the guide target intersection included in the map such that a value obtained by dividing a horizontal scale change rate by a vertical scale change rate is larger than 1, on the display section in the case where the guide target intersection is the narrow-angle branch intersection, wherein the scale-changed view display displays the guide target intersection in the scale-changed view at a position that is shifted forward in a travel direction such that more of an entry road is shown in the case where the guide target intersection is the narrow-angle branch intersection as compared to the case where the guide target intersection is not the narrow-angle branch intersection, thereby providing a driver more time to prepare for the narrow-angle branch intersection than for the case that the guide target intersection is not the narrow-angle branch intersection.
1 Assignment
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Accused Products
Abstract
A technique for displaying a scale-changed view of a narrow-angle branch intersection in an easily visually recognizable manner through simple processing. A map display system that displays a map on a display section includes: narrow-angle branch intersection determination code for determining whether or not a guide target intersection is a narrow-angle branch intersection at which an intersection angle between roads is smaller than a predetermined threshold; and a scale-changed view display for displaying a scale-changed view, which is obtained by changing a scale of the guide target intersection included in the map such that a value obtained by dividing a horizontal scale change rate by a vertical scale change rate is larger than 1, on the display section in the case where the guide target intersection is the narrow-angle branch intersection.
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Citations
4 Claims
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1. A map display system that displays a map on a display section, the map display system comprising:
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narrow-angle branch intersection determination software code for determining whether or not a guide target intersection is a narrow-angle branch intersection at which an intersection angle between roads is smaller than a predetermined threshold; and a scale-changed view display for displaying a scale-changed view, which is obtained by changing a scale of the guide target intersection included in the map such that a value obtained by dividing a horizontal scale change rate by a vertical scale change rate is larger than 1, on the display section in the case where the guide target intersection is the narrow-angle branch intersection, wherein the scale-changed view display displays the guide target intersection in the scale-changed view at a position that is shifted forward in a travel direction such that more of an entry road is shown in the case where the guide target intersection is the narrow-angle branch intersection as compared to the case where the guide target intersection is not the narrow-angle branch intersection, thereby providing a driver more time to prepare for the narrow-angle branch intersection than for the case that the guide target intersection is not the narrow-angle branch intersection. - View Dependent Claims (2)
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3. A map display method of displaying a map on a display section, the map display method comprising:
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a narrow-angle branch intersection determination step of determining whether or not a guide target intersection is a narrow-angle branch intersection at which an intersection angle between roads is smaller than a predetermined threshold; and a scale-changed view display step of displaying a scale-changed view, which is obtained by changing a scale of the guide target intersection included in the map such that a value obtained by dividing a horizontal scale change rate by a vertical scale change rate is larger than 1, on the display section in the case where the guide target intersection is the narrow-angle branch intersection, wherein the scale-changed view display displays the guide target intersection in the scale-changed view at a position that is shifted forward in a travel direction such that more of an entry road is shown in the case where the guide target intersection is the narrow-angle branch intersection as compared to the case where the guide target intersection is not the narrow-angle branch intersection, thereby providing a driver more time to prepare for the narrow-angle branch intersection than for the case that the guide target intersection is not the narrow-angle branch intersection.
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4. A non-transitory computer readable medium storing a map display program that causes a computer to implement a function of displaying a map on a display section, the map display program causing the computer to implement:
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a narrow-angle branch intersection determination function of determining whether or not a guide target intersection is a narrow-angle branch intersection at which an intersection angle between roads is smaller than a predetermined threshold; and a scale-changed view display function of displaying a scale-changed view, which is obtained by changing a scale of the guide target intersection included in the map such that a value obtained by dividing a horizontal scale change rate by a vertical scale change rate is larger than 1, on the display section in the case where the guide target intersection is the narrow-angle branch intersection, wherein the scale-changed view display displays the guide target intersection in the scale-changed view at a position that is shifted forward in a travel direction such that more of an entry road is shown in the case where the guide target intersection is the narrow-angle branch intersection as compared to the case where the guide target intersection is not the narrow-angle branch intersection, thereby providing a driver more time to prepare for the narrow-angle branch intersection than for the case that the guide target intersection is not the narrow-angle branch intersection.
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Specification