Navigation device with a three dimensional display
First Claim
1. A navigation device which performs 3 dimensional display when approaching an intersection which comprisesa map database which stores a number of vehicle lanes of a road which enters said intersection, a road width display database which stores road width display data which reduces a width of each vehicle lane and increases the width of the total road depending on a number of vehicle lanes on said road, a road width display data extraction means which extracts a number of vehicle lanes on a road which enters a subject intersection from said map database when approaching said intersection and which extracts road width display data corresponding to a number of extracted vehicle lanes from said road width display database, and a display means which performs display based on road width display data extracted by said road width display data extraction means.
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Abstract
The present invention is adapted to a navigation device which performs 3 dimensional display when approaching an intersection. The navigation device of the present invention comprises a map database which stores a number of vehicle lanes of a road which enters an intersection, a road width display database which decreases each vehicle lane width and increases the width of the total road depending on a number of vehicle lanes on a road, a road width display data extraction portion which extracts a number of vehicle lanes of a road which enters a corresponding intersection from a map database when approaching an intersection and which extracts road width display data corresponding to an extracted number of vehicle lanes from that road with display database a display which carries out display based on said extracted road width display data. In this way, it is easy to directly understand the number of vehicle lanes and such a display is easy to view.
72 Citations
14 Claims
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1. A navigation device which performs 3 dimensional display when approaching an intersection which comprises
a map database which stores a number of vehicle lanes of a road which enters said intersection, a road width display database which stores road width display data which reduces a width of each vehicle lane and increases the width of the total road depending on a number of vehicle lanes on said road, a road width display data extraction means which extracts a number of vehicle lanes on a road which enters a subject intersection from said map database when approaching said intersection and which extracts road width display data corresponding to a number of extracted vehicle lanes from said road width display database, and a display means which performs display based on road width display data extracted by said road width display data extraction means.
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5. A navigation device which performs 3 dimensional display when approaching an intersection which comprises
a map database which stores vehicle lane data about a road which enters each said intersection, a vehicle lane information extraction means which extracts vehicle lane information about a road which enters an intersection in question from said map database on approaching said intersection and a display means which displays only vehicle lane information about entering roads extracted by said vehicle lane information extraction means as vehicle lane information.
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9. A navigation device capable of performing three-dimensional display when approaching an intersection comprising:
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a map database which stores categories of data which discriminate each vehicle lane of a road which enters said each intersection into at least a straight lane, a right hand lane, a left hand lane, and a branching lane;
a sign designation means which extracts said categories of data from said map database on approaching said intersection and which designates a sign corresponding to categories of data with respect to each vehicle lane based on extracted categories of data; and
a display means which performs display based on sign designated by said sign designation means which further comprises a intersection name extraction means which extracts, from said map database, an intersection name of a subject intersection and of a sub-intersection in the vicinity of said subject intersection when approaching an intersection which should be indicated, said map database storing intersection names of each intersection;
wherein an intersection name of a subject intersection and of a sub-intersection in the vicinity of said subject intersection extracted by said intersection name extraction means are respectively distinguished and displayed.
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10. A navigation device capable of performing three-dimensional display when approaching an intersection comprising:
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a map database which stores categories of data which discriminate each vehicle lane of a road which enters said each intersection into at least a straight lane, a right hand lane, a left hand lane, and a branching lane;
a sign designation means which extracts said categories of data from said map database on approaching said intersection and which designates a sign corresponding to categories of data with respect to each vehicle lane based on extracted categories of data; and
a display means which performs display based on sign designated by said sign designation means which further comprises a vehicle lane information extraction means which extracts vehicle lane information about a subject intersection from said map database on approaching an intersection which should be guided, said map database storing vehicle lane information about roads which enter each intersection;
wherein after passing a sub-intersection before a subject intersection, vehicle lane information about said subject intersection extracted by said vehicle lane extraction means is displayed.
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11. A navigation device comprising:
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a map database for storing a number of vehicle lanes of a road entering an intersection;
a road width database for storing road width information including a width associated with each of the number of vehicle lanes and further including a total width associated with the road depending on the number of vehicle lanes of the road;
a road width display data extraction means for extracting the stored road width information including the number of vehicle lanes when approaching the intersection; and
a display for displaying the road according to the extracted road width display data.
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12. A navigation device for performing three-dimensional display when approaching an intersection, the navigation device comprising:
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a map database for storing information associated with a road entering the intersection according to categories, the categories including one or more of;
a straight lane, a right-hand lane, a left-hand lane, a branching lane, a number of lanes, and a road width;
a sign designation means for extracting the information when approaching the intersection and designating a sign corresponding to the categories; and
a display for displaying the designated sign.
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13. A method comprising the steps of:
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storing a number of vehicle lanes associated with a road entering an intersection;
storing road width information associated with the road including a width associated with each of the number of vehicle lanes and further including a total width associated with the road depending on the number of vehicle lanes associated with the road;
extracting the stored road width information including the number of vehicle lanes when approaching the intersection; and
displaying the road according to the extracted road width display data.
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14. A method for performing three-dimensional display when approaching an intersection, the method comprising the steps of:
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storing information associated with a road entering the intersection according to categories, the categories including one or more of;
a straight lane, a right-hand lane, a left-hand lane, a branching lane, a number of lanes, and a road width;
extracting the information when approaching the intersection and designating a sign corresponding to the categories; and
displaying the designated sign.
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Specification