WO2006126425A1

WO2006126425A1 - Navigation device, road surface angle diffrerence stogage method, waypoint information display method, program, and recording medium

Info

Publication number: WO2006126425A1
Application number: PCT/JP2006/309741
Authority: WO
Inventors: Tatsuya Kawashima
Original assignee: Pioneer Corporation
Priority date: 2005-05-24
Filing date: 2006-05-16
Publication date: 2006-11-30

Abstract

When a display device of a navigation device display a map near a car park (POI), a car park (POI) display control section displays, for a car park having no information on a road surface angle difference, an icon representing that the car park has no information on a road surface angle difference (STEP S13). Further, for a car park having information on a road surface angle difference, the car park (POI) display control section compares the road surface angle difference of the car park and the maximum road surface angle difference of an automobile on which the navigation device is mounted, and displays an icon representing that the automobile can be parked or cannot be parked (STEPs S14, S15). The navigation device can utilize information on an inclination angle difference of a car park road surface.

Description

Specification

Navigation device, road surface angle difference storage method, point information display method, program and recording medium

Technical field

The present invention relates to a navigation device, a road surface angle difference storing method, a point information display method, a program, and a recording medium, and more specifically, a navigation device for displaying point information and a road surface angle difference storing method. , Point information display method, program and recording medium.

Background art

[0002] In recent years, as a device installed in automobiles, etc., GPS (Global Positioning System) calculates its position and displays its position on a map, and also displays a route to a destination. Navigation devices for guiding are widely used. Such a navigation device holds information on peripheral facilities associated with points on the map called POI (Point of Interest), and superimposes information contained in the POI together with map information on the screen. By displaying, more information can be provided to the driver.

[0003] Information on nearby parking lots is displayed on the map displayed on the screen, which often includes parking lot information in POI information. Even so, parking can be found quickly. Furthermore, in order to determine whether or not a car equipped with the navigation device can be parked, additional information is added to the parking lot information to improve the convenience for the user. For example, Patent Document 1 uses information on parking space availability, business date and time, vehicle width, vehicle height, and fare. Patent Document 2 uses information on whether a parking lot is an elevator type, a step type, a gate type, a three-dimensional self-propelled type, or the like.

[0004] Patent Document 1: Patent Publication 2001—349740

Patent Document 2: Patent Publication No. 2004-205316

Disclosure of the invention Problems to be solved by the invention

[0005] These pieces of information are used as useful information when the driver uses the parking lot. However, in addition to this information, there is a difference in the inclination of the road surface of the parking lot as information that the driver wants to pay attention to when choosing a parking lot. In a parking lot that is built in a narrow area in an urban area, there are many cases where the angle difference of the road surface in the parking lot is large, especially when there is a large angle difference upward from the running road surface. The bottom side of the tip may be rubbed or crushed. This can happen when the center force of the front tire is too large (front overhang) to the tip of the body. Conversely, if the center force of the rear tire is too far from the rear end of the body (rear overhang), the rear end of the body may be rubbed.

[0006] These maximum angles that the vehicle can travel are called the approach angle and the departure angle in the vehicle, respectively, and are the quantities represented by AA and DA, respectively, in the car C in FIG. It has become an important parameter for vehicles. However, with the conventional navigation device, whether or not the difference in the inclination of the road surface of the parking lot exceeds these approach angles or departure angles is considered by actually going to the parking lot. And there was no power.

[0007] Even if the parking lot is not a parking lot, a road with a steep slope or a hump (a part of the road that is raised) is installed on the road. There are also places where you can hit the tip.

[0008] Furthermore, it is not easy to investigate in advance all the detailed data such as the road surface angle difference and install it as a part of the function of the navigation device.

[0009] The present invention has been made in view of the above circumstances, and obtains information about the angle difference between the slopes of the road surface and allows the user to determine whether or not the vehicle can travel. The object is to provide a road surface angle difference storage method, a point information display method, a program, and a recording medium.

Means for solving the problem

[0010] According to the first aspect of the present invention, a current position that is attached to the moving means and acquires the current position A navigation device comprising a position acquisition device, road surface angle difference information storage means for storing road surface angle difference information representing an angle difference of a road surface inclination in association with a point; and road surface angle difference information storage And a point information display means for displaying information on a designated point on a display device based on the road surface angle difference information stored in the means.

Here, the “moving means” includes an automobile. In addition, the “angle difference in road surface inclination” does not mean the inclination of the horizontal plane force, it means the change in angle in the traveling direction of the continuous road surface, and the convex angle difference only by the concave angle difference. Shall be included. In addition, the “road surface angle difference information” includes not only the “road surface angle difference” itself but also an expression such as “the road surface angle difference” expressed in five levels. The “point” is, for example, latitude and longitude information, and means a position on the earth. The “designated point” is, for example, a point included in the displayed area when the map is displayed on the navigation device, and the point where the navigation device is instructed to display information. means. “Point information” includes “road surface angle difference information” itself. Therefore, in this navigation device, by performing display based on information on the angle difference of the road surface inclination, the user can recognize the road surface angle difference and determine whether or not traveling is possible.

[0012] Further, the navigation device of the present invention further includes a maximum road surface angle difference information storage unit that stores maximum road surface angle difference information representing the maximum road surface angle difference information that the moving unit can travel, The point information display means compares the maximum road surface angle difference information with the road surface angle difference information of the specified point, determines whether or not the specified point can be traveled, and The information can be displayed on the display device in such a manner that the propriety of traveling can be determined.

[0013] Here, "display in a manner that can determine whether or not the vehicle can be traveled" includes a so-called POI icon to determine whether or not the vehicle can be used, and does not display items that cannot be used. Also included. Therefore, in this navigation device, the user can determine whether or not the vehicle can travel using the information on the angle difference of the road surface inclination. [0014] Further, the navigation device of the present invention further comprises road surface angle difference information acquisition means for measuring road surface inclination difference information when the moving means travels, and acquiring the road surface angle difference information. The road surface angle difference information acquired by the angle difference information acquisition unit is stored in the road surface angle difference information storage unit as the road surface angle difference information of the point specified by the current position acquired by the current position acquisition device. It can be.

[0015] Therefore, in this navigation apparatus, in order to further acquire information on the angle difference of the road surface inclination, it is possible to add road surface angle difference information that can determine whether or not the vehicle can travel. Moreover, even if the road surface angle difference information at all points is not investigated in advance, it can be obtained by the user himself.

[0016] In addition, in the navigation device of the present invention, when the point information display means receives a notification that the vehicle cannot travel due to an angle difference of the road surface at a point that should be determined to be able to travel, The maximum road surface angle difference information stored in the maximum road surface angle difference information storage unit may be corrected. Therefore, conditions for the difference in the angle of the road surface on which the vehicle can travel can be made strict according to the result of the actual use of the moving means, so that it is possible to accurately determine whether or not the vehicle can travel.

[0017] Further, in the navigation device of the present invention, each data of the road surface angle difference information stored in the road surface angle difference information storage means can be delivered. Here, “delivery possible” includes the case where delivery is performed using a communication function including infrared communication and mobile communication using only various media including optical recording media. Therefore, in this navigation device, road surface angle difference information that can determine whether or not the vehicle can travel can be additionally provided by passing the information on the road surface angle difference. Moreover, even if the road surface angle difference information at all points is not investigated in advance, it is possible to carry out additional calorie by handing it over.

[0018] Further, in the navigation device of the present invention, the road surface may be a parking lot road surface, and the location may be a parking lot location. Here, the “parking spot” may be a spot in the parking lot, or the parking lot itself may be applied as one spot. In this case, “running availability” includes the meaning of parking availability. Therefore, this navigation device acquires and uses information on the road surface angle difference of the parking lot. It can be done.

[0019] According to a second aspect, the present invention provides a road surface angle difference information storage method for storing road surface angle difference information representing an angle difference of a road surface inclination, and when the moving means travels on the road surface, A road surface angle difference information acquisition step of measuring the inclination of a surface and acquiring the road surface angle difference information; and the road surface angle difference information acquired by the road surface angle difference information acquisition step, the road surface angle of the traveled point A road surface angle difference information storage step for storing the road surface angle difference information as difference information. Therefore, in this road surface angle difference information storage method, it is possible to acquire information about the angle difference of the road surface inclination and use it by yourself or provide it to others.

[0020] According to a third aspect, the present invention provides a point information display method for displaying point information, which is road surface angle difference information indicating an angle difference of a road surface inclination, and includes a position information before a specified point. The road surface angle difference information is compared with the maximum road surface angle difference information representing the maximum value of the road surface angle difference information that can be traveled by the moving means to determine whether or not the designated point can be driven. A point information display step for displaying information on the designated point in such a manner that the travel propriety determined in the travel propriety determination step can be determined. This is an information display method.

[0021] According to a fourth aspect, the present invention is a road surface angle difference information storage program characterized by causing a calculation means to execute the road surface angle difference information storage method of the present invention.

[0022] From a fifth aspect, the present invention is a point information display program characterized by causing a calculation means to execute the point information display method of the present invention.

[0023] According to a sixth aspect of the present invention, there is provided a recording medium in which the road surface angle difference information storage program of the present invention is recorded so as to be readable by an arithmetic means.

[0024] According to a seventh aspect of the present invention, there is provided a recording medium characterized in that the point information display program of the present invention is recorded so as to be readable by a calculation means.

Brief Description of Drawings

1 is a diagram schematically showing a navigation apparatus 10 according to an embodiment of the present invention. FIG. 2 is a diagram schematically showing a hard disk 19 in FIG. FIG. 3 is a diagram schematically showing a configuration of a program unit 30 in FIG. 2.

[4] FIG. 4 is a diagram showing a configuration of the parking lot road surface angle difference storage unit 42 of FIG.

5 is a diagram showing a configuration of a maximum road surface angle difference storage unit 43 in FIG.

FIG. 6 is a diagram showing a state in which the parking lot road surface angle difference acquisition unit 32 in FIG. 3 acquires the angular difference of the parking lot road surface.

FIG. 7 is a sequence diagram (No. 1) showing a process for acquiring the angle difference of the road surface of the parking lot in the navigation device of FIG.

FIG. 8 is a sequence diagram (No. 2) showing a process for acquiring the angle difference of the road surface of the parking lot in the navigation device of FIG.

FIG. 9 is a diagram showing a configuration of a parking lot road surface angle difference storage unit 42 after the process of obtaining the road angle difference of the parking lot in FIG. 7.

10 is a diagram showing a configuration of a parking lot road surface angle difference storage unit 42 after information is added using the optical recording medium 17 of FIG. 1.

FIG. 11 is a flowchart showing a process of the parking lot POI display control unit 31 of FIG. 3.

FIG. 12 is a diagram showing a state of displaying a parking lot POI icon displayed on the display device 22 by the parking lot POI display processing of FIG. 11.

FIG. 13 is a diagram showing a state after correction of the maximum road surface angle difference storage unit 43 in FIG. 2.

FIG. 14 is a diagram for explaining an approach angle and a departure angle.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In these drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

[0027] <Device configuration>

FIG. 1 schematically shows a configuration of a navigation device 10 according to an embodiment of the present invention. The navigation device 10 is mounted on the automobile C, and as shown in FIG. 1, (a) a central processing unit (CPU) 11 that controls the system of the navigation device 10 as a whole, and (b) CPUl l Program power executed by RAM (Random Access Memory) 12 to be used, (c) ROM (Read Only Memory) 13 in which basic programs executed by CPU are stored, and (d) Measure the distance traveled by the installed vehicle Mileage sensor 14, (e) an inclinometer 15 that measures the tilt of the mounted vehicle, and (f) GPS radio wave power is received, the current position is calculated, and the current position is complemented by a gyro sensor. A GPS receiver 16 that performs processing, (g) an optical recording medium 17 that is a DVD—RAM storing information on parking lots to be added, and (h) light that reads information stored in the optical recording medium 17 A recording medium drive 18, (i) a hard disk 19 which is a mass storage device recorded by magnetism, (j) a remote control 20 which is an input device used when a user gives an external force instruction, and (k ) Remote control IZF21 that directly receives instructions from the remote control 20 and sends them to the CPU. (1) Map information and A display device 22 which is a liquid crystal display device for displaying guidance information; (m) a display controller 23 for controlling display on the display device 22; and (n) a voice output unit 24 for outputting guidance information and the like by voice. It is equipped with.

FIG. 2 schematically shows information stored in the hard disk 19. The hard disk 19 includes (i) a program unit 30 in which a program executed by CPU 11 is stored, and (ii) POI information in which POI information, which is facility information associated with latitude and longitude point information, is stored. A storage unit 41, and (iii) a parking lot road surface angle difference storage unit 42 that is associated with the parking facility information in the POI information and stores a road surface angle difference of each parking lot. A maximum road surface angle difference storage unit 43 storing approach angles and departure angles, and (V) a map information storage unit 44 storing map information.

Here, as shown in FIG. 3, the program unit 30 includes a parking lot POI display control unit 31 that controls the display of the parking lot POI icon displayed together with the map information on the display device 22, and a parking lot interior. The parking lot road surface angle difference acquisition unit 32 that acquires the road angle difference between the parking lot entrance, inside and exit, and the destination and waypoints set by the user using the remote controller 20 And a navigation function unit 33 for searching for a route and displaying it together with map information.

[0030] In addition, as shown in FIG. 4, the parking lot road surface angle difference storage unit 42 stores road surface angle differences at the entrance, inside, and exit of the parking lot at the point P1. Further, as shown in FIG. 5, the maximum road surface angle difference storage unit 43 includes the approach angle and deperture of the vehicle C. It is stored that the angle force is 19 ° and 28 ° respectively.

[0031] <Operation>

Next, a road surface angle difference storing method and a point information display method in the navigation device 10 configured as described above will be described.

[0032] FIG. 6 is a diagram showing the height difference of the parking lot at the point P2. When the driver of the car C tries to enter the parking lot at this point P2 and arrives at the point P21 which is the entrance of the parking lot, as shown in FIG. 7, the navigation function unit 33 receives the GPS receiver 16 From the current location information acquired from the POI and the parking lot POI at the point P2 acquired from the POI information storage unit 41, it is detected that the vehicle reaches the entrance point P21 of the parking lot. The navigation function unit 33 that has detected the entrance point P21 issues a road surface angle difference acquisition command to the parking lot road surface angle difference acquisition unit 32, and the parking lot road surface angle difference acquisition unit 32 that has received the road surface angle difference acquisition command receives the road surface angle difference acquisition command. In order to calculate the angle difference, the measurement value of the inclinometer 15 is started.

Next, when the car C arrives at the internal point P22 in FIG. 6, as shown in FIG. 7, the navigation function unit 33 detects that it is at the internal point P22 like the entrance point P21. . The navigation function unit 33 that has detected the internal point P22 instructs the parking lot road surface angle difference acquisition unit 32 to store the parking lot entrance angle difference. The parking lot road surface angle difference acquisition unit 32 that has received the entrance angle difference storage instruction calculates the road surface angle difference at the entrance and stores it in the parking lot road surface angle difference storage unit 42. Subsequently, the parking lot road surface angle difference obtaining unit 32 obtains a measurement value from the inclinometer 15 in order to measure the inside of the parking lot.

Here, when the automobile C is parked at the parking position, the navigation device 10 including the inclinometer 15 stops along with the engine stop. When the engine is started again, the measurement of the inclinometer 15 is resumed along with the navigation function. After the measurement is resumed, when the car C arrives at the exit point P23 in FIG. 6, as shown in FIG. 8, the navigation function unit 33 detects that it is at the exit point P23, similarly to the entrance point P21. The navigation function unit 33 that has detected the exit point P23 instructs the parking lot road surface angle difference acquisition unit 32 to store the internal angle difference of the parking lot. The parking lot road surface angle difference acquisition unit 32 that has received the internal angle difference storage command calculates the road surface angle difference inside the parking lot and stores it in the parking lot road surface angle difference storage unit 42. Subsequently, the parking lot road surface angle difference acquisition unit 32 measures the parking lot exit. Therefore, the measured value is acquired from the inclinometer 15.

Next, when the car C arrives at the external point P24 in FIG. 6, as shown in FIG. 8, the navigation function unit 33 detects that it is at the external point P24 as in the case of the entrance point P21. . The navigation function unit 33 that has detected the external point P24 instructs the parking lot road surface angle difference acquisition unit 32 to store the parking lot exit angle difference. The parking lot road surface angle difference acquisition unit 32 that has received the exit angle difference storage instruction calculates the road surface angle difference at the parking lot exit, stores it in the parking lot road surface angle difference storage unit 42, and acquires the parking lot road surface angle difference. End the process.

A state of the parking lot road surface angle difference storage unit 42 in which the information on the road surface angle difference of the parking lot at the point P2 obtained in this way is stored is shown in FIG. As shown in Fig. 9, as the information on the road surface angle difference of the parking lot at the point P2, an angle difference of 16 ° at the entrance, an angle difference of 5 ° at the inside, and an angle difference of 10 ° at the exit are newly added. Stored.

[0037] Next, when the driver of the car C causes the optical recording medium drive 18 to read the information on the optical recording medium 17 in which the information on the road surface angle difference of the parking lot at the point P4 is stored, the hard disk 19 is read. The information of the stored parking lot road surface angle difference storage unit 42 is updated, and information on the road surface angle difference of the parking lot at the point P4 is added as shown in FIG. Here, the driver adds the information on the road surface angle difference of the parking lots at the points P1 and P2 to the optical recording medium, and saves the information on the road surface angle difference of the parking lot in another navigation device. Can be provided.

[0038] In the navigation device 10 having the information on the parking lot road surface angle difference as shown in Fig. 10, when displaying the map of the area including the points P1 to P4, the parking lot POI display control unit 3 1 The process for displaying the power parking lot POI icon will be described with reference to the flowchart of FIG.

[0039] First, when the icon of the parking lot POI at the point P1 is displayed, in step S11, the presence or absence of road surface angle difference information is determined. Here, since the road surface angle difference information of the parking lot at the point P1 exists in the parking lot road surface angle difference storage unit 42, a positive determination is made. Subsequently, in step S12, the point P1 stored in the parking lot road angle difference storage unit 42 is stored. The maximum value 0 among the entrance, interior and exit values of the parking lot road angle difference and the maximum road angle

P

The difference between the approach angle and the departure angle stored in the difference storage unit 43 is compared with the minimum value Θ, and it is determined whether the maximum road angle difference is larger than the parking road surface angle difference.

C

Determined. Here, since the parking lot road surface angle difference is 21 ° at the entrance and the maximum road surface angle difference is 19 ° of the approach angle, a negative determination is made, and the routine proceeds to step S15. In step S15, an icon indicating that parking is not possible is displayed on the display device 22. This display is shown at point P 1 in Fig. 12! /

[0040] Next, when displaying the parking POI icon at point P2, as in the case of point P1, the presence or absence of road surface angle difference information is determined in step S11, and a positive determination is made. Is done. Subsequently, in step S12, it is determined whether the maximum road surface angle difference is larger than the parking lot road surface angle difference. Here, the parking lot road surface angle difference is 16 ° at the entrance, and the maximum road surface angle difference is 19 ° of the approach angle, so a positive determination is made and the process proceeds to step S14. In step S14, an icon indicating that parking is possible is displayed on the display device 22. This display is shown at point P2 in Fig. 12! /

[0041] Next, when displaying the parking POI icon at point P3, as in the case of point P1, the presence or absence of road surface angle difference information is determined in step S11. Since there is no road surface angle difference information for parking lots, a negative determination is made. Subsequently, the process proceeds to step S13, and a parking lot POI icon indicating that there is no road surface angle difference information is displayed on the display device 22. This display is shown at point P3 in Fig. 12!

[0042] Next, when displaying the parking POI icon at point P4, as in point P2, a positive determination is made at step S11 and step S12, and the fact that parking is possible at step S14. An icon to be displayed is displayed on the display device 22. This display is shown at point P4 in Fig.12.

[0043] After that, the driver of the car C equipped with the navigation device 10 tries to park in the parking lot at the point P4 where it is displayed that parking is possible. Here, the road surface angle difference of the parking lot at the point P4 newly acquired by the parking lot road angle difference acquisition unit 32 is the same as the road surface angle difference data already stored in the parking lot road angle difference storage unit 42. However, suppose that the lower part of the end of the body of car C is rubbed at the entrance. So driving When the operator operates the remote controller 20 and inputs that he / she entered the parking lot at the point P4, the approach angle of the maximum road surface angle difference storage unit 43 is from 19 ° to the angle of the parking lot entrance at the point P4. It can be rewritten as 18 °. The state power after this rewriting is shown in Fig. 13.

[0044] As described above, in the present embodiment, first, when the car C including the navigation device 10 uses the parking lot at the point P2, the road surface angle difference between the entrance, the inside, and the exit is obtained. Then, it is stored in the parking lot road surface angle difference storage unit 42. Next, the navigation apparatus 10 acquires information on the road surface angle difference of the parking lot at the point P4 from the optical recording medium 17. When the display device 22 continues to display a map near the parking lot POI, the parking lot POI display control unit 31 displays a icon indicating that there is no road surface angle difference information for a parking lot without road surface angle difference information. Is displayed. For parking lots with road surface angle difference information, the road surface angle difference of the parking lot is compared with the maximum road surface angle difference of car C, and an icon indicating that parking is possible or an icon indicating that parking is not possible is displayed. In addition, in the parking lot where the road surface angle difference was able to be parked, the maximum road surface angle difference of the vehicle C is corrected by the driver's input if there is a force that cannot be parked due to the road surface angle difference.

Therefore, according to the present embodiment, the driver can determine whether or not the parking lot can be used by using the parking lot road surface angle difference information.

Further, in the present embodiment, since the inclinometer 15 acquires information about the angle difference of the road surface inclination of the parking lot, the road surface angle difference information can be added by itself. In addition, since the information on the road surface angle difference can be delivered by the optical recording medium 17, the road surface angle difference information can be acquired and added from others, and can be provided to others. Therefore, even if the software provider of the navigation device does not investigate the road surface angle difference information of all parking lots in advance, it can be obtained by the user himself.

[0047] Further, in the present embodiment, when it is determined that the parking lot POI display control unit 31 can use the parking lot, and the result of the actual use of the car C for the parking lot cannot be used due to the road surface angle difference. Can be corrected by tightening the conditions of the angle difference that can use the parking lot, based on the driver's input, so that the determination of the availability of the parking lot can be made accurate.

<Modification of Embodiment> The present invention is not limited to the above embodiment, and various modifications are possible.

[0049] For example, in the present embodiment, it is possible to input the number of floors, the type of rooftop, or the like that is used to identify the parking lot by the location of the parking lot.

[0050] In the present embodiment, the entrance, interior, and exit are automatically detected by detecting the current position using GPS. However, the measurement point may be set manually. . Moreover, it is good also as acquiring a road surface angle difference, without distinguishing an entrance, an inside, and an exit, It is good also as acquiring only a specific place.

[0051] In this embodiment, the medium capable of delivering the parking lot road surface angle difference is an optical recording medium. However, the medium may be another medium or may be obtained by wireless communication or other communication means. It's also possible to offer!

[0052] Further, in the present embodiment, the maximum road surface angle difference storage unit 43 stores the approach angle and the departure angle as the maximum road surface angle difference that the vehicle can pass. Only the smaller one may be recorded.

[0053] In the present embodiment, the parking lot road surface angle difference storage unit 42 distinguishes and stores the entrance, the inside, and the exit, but only the maximum road surface angle difference is stored. As a matter of fact.

In the present embodiment, the focus is on the angle difference of the concave road surface. However, it is obvious that the same can be applied to the angle difference of the convex road surface.

[0055] In this embodiment, the parking lot POI display control unit 31 displays the information such as the icon when the parking lot that cannot be used is displayed, and the power indicating that the parking lot POI display control unit 31 cannot be used. Shina, as a matter of fact.

[0056] In the present embodiment, the parking lot POI display control unit 31 determines whether or not the parking lot can be used and displays the force, but does not determine whether or not the parking lot can be used. The road surface angle difference of the parking lot may be displayed as a numerical value as it is, or the road surface angle difference may be displayed with icons colored in stages.

It should be noted that the traffic information processing program 50 in the above embodiment is recorded on a computer-readable recording medium such as a hard disk, CD-ROM, DVD, etc., and the recording medium force is also read by the computer and executed. The In addition, these programs Alternatively, it may be acquired in a form recorded on a portable recording medium such as a CD-ROM or DVD, or may be acquired in a form of delivery via a network such as the Internet.

Claims

The scope of the claims

[1] A navigation device that is mounted on a moving means and includes a current position acquisition device that acquires a current position,

Road surface angle difference information storing means for storing road surface angle difference information representing an angle difference of road surface inclination in association with a point;

A navigation device comprising: point information display means for displaying information on a designated point on a display device based on the road surface angle difference information stored in the road surface angle difference information storage means. .

[2] The vehicle further comprises a maximum road surface angle difference information storage unit that stores maximum road surface angle difference information representing the maximum road surface angle difference information that the moving unit can travel,

The point information display means compares the maximum road surface angle difference information with the road surface angle difference information of the designated point, determines whether or not the designated point is allowed to travel, and determines the designated point. The navigation device according to claim 1, wherein the information is displayed on a display device in such a manner that whether or not the vehicle can travel is discriminated.

[3] When a notice that the vehicle cannot be driven due to a difference in the inclination of the road surface at a point that should be determined to be able to travel by the point information display unit is stored in the maximum road surface angle difference information storage unit. The navigation device according to claim 2, wherein the stored information on the maximum road surface angle difference of the moving means is corrected.

[4] The vehicle further comprises road surface angle difference information acquisition means for measuring the road surface inclination and acquiring the road surface angle difference information when the moving means travels,

The road surface angle difference information acquired by the road surface angle difference information acquisition unit is stored in the road surface angle difference information storage unit as the road surface angle difference information of the point specified by the current position acquired by the current position acquisition device. The navigation device according to claim 1, wherein the navigation device is stored.

[5] When a notification that the vehicle cannot travel due to the angle difference of the slope of the road surface is received at the point that should be determined to be able to travel by the point information display means, the maximum road surface angle difference information storage means 5. The navigation device according to claim 4, wherein the maximum road surface angle difference information of the stored moving means is corrected.

6. The navigation device according to claim 1, wherein each data of the road surface angle difference information stored in the road surface angle difference information storage means can be transferred.

7. The navigation device according to claim 1, wherein the road surface is a road surface of a parking lot, and the point is a parking lot point.

[8] A road surface angle difference information storage method for storing road surface angle difference information representing an angle difference of a road surface slope,

A road surface angle difference information acquisition step of measuring the slope of the road surface and acquiring the road surface angle difference information when the moving means travels on the road surface;

A road surface angle difference information storing step of storing the road surface angle difference information acquired by the road surface angle difference information acquiring step as the road surface angle difference information of the traveled point. Preservation method.

[9] A point information display method for displaying point information,

Road surface angle difference information representing the angle difference of the road surface inclination, and the maximum road surface angle difference representing the maximum value of the road surface angle difference information at a specified point and the road surface angle difference information that the moving means can travel. A travel capability determination step of comparing the information and determining whether the specified location is allowed to travel;

A spot information display method comprising: a spot information display process for displaying information on the designated spot in such a manner that the run propriety determined in the travel propriety determination process can be determined.

[10] A road surface angle difference information storage program characterized by causing a calculation means to execute the road surface angle difference information storage method according to claim 8.

[11] A point information display program that causes a calculation means to execute the point information display method according to claim 9.

[12] A recording medium in which the road surface angle difference information storage program according to claim 10 is recorded so as to be readable by an arithmetic means.

[13] A recording medium, wherein the point information display program according to claim 11 is recorded so as to be readable by a calculation means.