WO2008041338A1

WO2008041338A1 - Map display, map display method, map display program, and recording medium

Info

Publication number: WO2008041338A1
Application number: PCT/JP2006/319882
Authority: WO
Inventors: Koji Hirose; Makoto Yoshihashi; Kumiko Shudo
Original assignee: Pioneer Corporation; Increment P Corporation
Priority date: 2006-10-04
Filing date: 2006-10-04
Publication date: 2008-04-10
Also published as: JPWO2008041338A1

Abstract

A judging section (105) judges a map image including a road on which a movable body is present on the basis of the current point of the movable body detected by a position detecting section (103) and the height of the current point of the movable body detected by a height detecting section (104). An acquisition section (106) then acquires information on the road and an association section (107) associates the information with the map image including the road on which the movable body is present out of a plurality of map images. A display control unit (108) highlights the map image with which the information is associated.

Description

MAP DISPLAY DEVICE, MAP DISPLAY METHOD, MAP DISPLAY PROGRAM, AND RECORDING MEDIUM

The present invention relates to a map display device, a map display method, a map display program, and a recording medium that display a combination of a plurality of map images divided according to road types. However, use of the present invention is not limited to the above-described map display device, map display method, map display program, and recording medium.

Background art

Conventionally, there is a map display device provided with a control unit that searches a specified map specified by a user from a map information and a combined plane map using a degree of separation. In this map display device, the control unit is configured to synthesize and display a synthesized map by combining the searched designated map and the combined plane map. As a result, the user can easily determine where and how much the map (area) can be regarded as the same height as the map specified by referring to such a composite map. (For example, see Patent Document 1 below.)

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-317658

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in general, for information that overlaps in the height direction, information on the higher road is preferentially displayed. For example, information on the lower road such as a traffic light under an elevated road is viewed. One example is the problem of being unable to do so.

[0005] Also, in Patent Document 1 described above, it is possible to clarify the relationship between the height positions of maps. For example, a plurality of maps at different height positions are overlapped to create a two-dimensional plane. In the case of displaying in a diagram, there is an example of the problem that it is difficult to determine whether the road overlapped in the height direction is self-powered.

Means for solving the problem

[0006] In order to solve the above-described problems and achieve the object, a map display according to the invention of claim 1 In the map display device that displays a combination of a plurality of map images divided according to the type of road, the device is based on position detection means for detecting the current position of the moving body, and on the current position detected by the position detection means. Determining means for determining a map image including a road on which the moving body is present among the plurality of map images; and display control means for highlighting and displaying the map image determined by the determining means. It is characterized by having.

[0007] In addition, the map display method which is useful for the invention of claim 7 is a complex display method classified by road type.

A position detection step for detecting the current location of the mobile body, and a map image including a road where the mobile body is present among the plurality of map images based on the current location detected by the location detection step. A determination step of determining an image; and a display control step of highlighting and displaying the map image determined in the determination step.

[0008] Further, a map display program according to claim 8 causes a computer to execute the map display method according to claim 7.

[0009] Further, a recording medium according to the invention of claim 9 is characterized in that the map display program according to claim 8 is recorded in a computer-readable state.

Brief Description of Drawings

[0010] FIG. 1 is a block diagram showing a functional configuration of a map display device that works according to the present embodiment.

FIG. 2 is a flowchart showing a map display processing procedure of the map display device.

[FIG. 3] FIG. 3 is a block diagram showing a hardware configuration of a navigation apparatus that is effective in the present embodiment.

FIG. 4 is a flowchart showing the contents of processing of the navigation device.

FIG. 5 is an explanatory diagram showing an example of a layer for each type of road.

[FIG. 6] FIG. 6 is an explanatory diagram showing an example of a display screen on which map images are superimposed and displayed.

FIG. 7 is an explanatory diagram showing another example of a display screen that displays a map image superimposed thereon. Explanation of symbols

[0011] 100 map display device

101 Display

102 Memory unit

103 Position detector

104 Height detector

105 Judgment part

106 Acquisition Department

107 Pegging part

108 Display controller

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of a map display device, a map display method, a map display program, and a recording medium according to the present invention will be described in detail with reference to the accompanying drawings.

[0013] (Embodiment)

(Functional structure of map display device)

First, the functional configuration of the map display device 100 that is relevant to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing a functional configuration of the map display device according to the present embodiment.

In FIG. 1, a map display device 100 includes a display unit 101, a storage unit 102, a position detection unit 103, a height detection unit 104, a determination unit 105, an acquisition unit 106, and a linking unit 107. And a display control unit 108.

The display unit 101 includes a display screen that displays the map information stored in the storage unit 102. The map information is composed of a plurality of map images (layers) divided by road type. Specifically, the types of roads are, for example, toll roads, general roads, and underground roads. Further, specifically, the type of road may be distinguished by the height of the road from the ground regardless of the type of road, for example. Furthermore, the type of road may be distinguished for each type of moving object such as a pedestrian or a vehicle.

[0016] Each map image includes road network data, which is a node and a link force, and facilities. And image data drawn using features related to roads and other terrain (mountains, rivers, land). In addition, the map image may include character information, information such as the name and address of the facility, and an image of the facility. When common information is included in a plurality of map images, only information included in one of the displayed map images is displayed. Specifically, the common information is, for example, names of roads and intersections that overlap in the height direction.

[0017] In addition, the display unit 101 displays a mark representing the current location of the moving object on the map image. The mark representing the current position of the moving object may be represented by, for example, an arrow, and the direction of the mark may represent the direction of the moving object on the map image.

[0018] The position detection unit 103 detects the current location of the moving object. Specifically, for example, the current location of a moving object is detected from the output values of a GPS (Global Positioning System) receiver and various sensors. The current location of the mobile object is represented by, for example, latitude and longitude.

[0019] The height detection unit 104 detects the height of the current location of the moving object. Specifically, for example, the height of the current location of the moving object is detected from the output values of the GPS receiver and various sensors. By detecting the height of the current position of the moving object, the current position of the moving object can be detected as position information including altitude and latitude / longitude. Therefore, the current location of the moving object is specified as one point in the map information.

Based on the current location detected by the position detection unit 103, the determination unit 105 determines a map image including a road on which a moving body is present among a plurality of map images. Specifically, for example, it is determined whether the road on which the moving body exists is a toll road or a general road. In addition, for example, when two or more roads overlap in the height direction such as a three-dimensional intersection, the determination unit 105 determines whether the current point detected by the position detection unit 103 and the height detection unit 104 Based on the detected height, a map image including a road where a moving body is present may be determined from among a plurality of map images. Further, the determination unit 105 may determine a map image including a route along which the moving body is moving among a plurality of map images, based on the current location detected by the position detection unit 103. Specifically, the route along which the moving body moves is, for example, the road on which the moving body moved before arriving at the current location, or the future. Including roads that are scheduled to travel.

[0021] The acquisition unit 106 acquires information on a road. The information regarding the road is specifically road traffic information such as traffic jam information and traffic regulation information. The acquisition unit 106 may acquire road traffic information for each type of road, or only information on roads on the map image determined by the determination unit 105 to include roads with moving objects. May be.

[0022] The association unit 107 associates the information acquired by the acquisition unit 106 with a map image including a road where a moving body is present among a plurality of map images. Specifically, for example, when the moving body is on a toll road, the road traffic information of the toll road is linked to the map image of the toll road. Further, the associating unit 107 may associate the information acquired by the acquiring unit 106 with a plurality of map images.

The display control unit 108 highlights and displays the map image determined by the determination unit 105. Specifically, for example, only the map image determined by the determination unit 105 may be displayed. When a plurality of map images are displayed in a superimposed manner, for example, the map image determined by the determination unit 105 is displayed. Other map images may be displayed in a transparent manner.

[0024] The display control unit 108 also displays the information associated with the association unit 107 on the map image to be displayed with emphasis. Specifically, for example, traffic information is displayed with arrows, or displayed in a color different from normal.

[0025] The display control unit 108 shifts the coordinate axes of a plurality of map images by a predetermined amount and displays them in a superimposed manner. Specifically, for example, when a plurality of map images are superimposed and displayed, the roads that overlap in the vertical direction are displayed with a predetermined shift by shifting the coordinate axes by a predetermined amount.

[0026] In addition, the display control unit 108 may change the shape and size of a mark representing the current point of the moving object based on the height of the current point of the moving object. Specifically, for example, if the current location of the moving object is on the ground, the standard shape is used. If the current location of the moving object is on an elevated toll road, the shape is larger than the standard shape, such as a tunnel. If the current location of the moving object is in the basement, it is represented by a shape smaller than the standard shape.

[0027] (Map display processing procedure of map display device) Next, the map display processing procedure of the map display device 100 will be described. FIG. 2 is a flowchart showing the map display processing procedure of the map display device. In the flowchart of FIG. 2, first, the current position of the moving object is detected by the position detection unit 103 (Step S20 Do) Next, the current position of the moving object detected in Step S201 by the height detection unit 104 is detected. The height is detected (step S 202).

[0028] Based on the current location detected in step S201 and the height detected in step S202, the determination unit 105 determines a map image including a road on which a moving body is present. (Step S203).

Next, information on roads is acquired by the acquisition unit 106 (step S204). In step S204, it may be possible to acquire only information related to roads included in the map image determined to have a moving body in step S203, or information related to roads included in a plurality of map images may be acquired. Good.

[0030] Then, the information on the road acquired in step S204 is linked by the linking unit 107 to a map image including a road where a moving body is present among a plurality of map images (step S205), and display control is performed. The map image associated with the information by the unit 108 is highlighted and displayed (step S206), and the series of processing ends.

[0031] In the flowchart of Fig. 2, in step S205, the map image is associated with a map image including a road where a moving object is present, but the present invention is not limited to this. Specifically, for example, a configuration may be used in which information about roads included in other map information is linked.

[0032] In the flowchart of FIG. 2, the map image to which information is associated in step S206 is emphasized and displayed. Specifically, for example, the map image other than the map image to be highlighted is displayed. Information about roads linked to other map images and other map images may be displayed transparently.

Further, in the flowchart of FIG. 2, it is not limited to the force that the map image associated with information in step S206 is highlighted. Specifically, for example, the coordinate axes of the map image may be shifted by a predetermined amount, or only the map image associated with the information may be displayed. In addition, map image that information was tied to Whether or not to display only may be determined by accepting selection by the user.

[0034] As described above, according to map display apparatus 100 of the present embodiment, based on the current location detected by position detection unit 103, there is a moving body among the plurality of map images by determination unit 105. The map image including the road to be detected can be determined, and the display control unit 108 can highlight and display the map image including the road where the moving object exists.

[0035] Therefore, even in map information where there are a plurality of toll roads and general roads, it is possible to highlight and display information on roads where moving objects exist. As a result, the user can preferentially check the information of the road on which the user exists, and thus can accurately read the information about the road.

[0036] Also, according to the map display device 100 of the present embodiment, a plurality of map images are based on the current location detected by the position detection unit 103 and the height detected by the height detection unit 104. Among them, it is possible to determine a map image including a road where a moving body exists. Therefore, it is possible to determine the power of a moving body that exists on any of the roads that overlap in the vertical direction. As a result, the user can preferentially check the information of the road on which he / she exists, so that the user can accurately read the information on the road even if he / she exists on any of the roads that overlap each other. it can.

[0037] Also, according to the map display device 100 of the present embodiment, the display control unit 108 displays information on the road linked by the linking unit 107 together with the map image to be displayed with emphasis. Can do. Therefore, it is possible to highlight and display information about roads associated with the map image to be highlighted. As a result, the user can preferentially display the information of the road where the user exists even in the map information where the toll road and the general road exist, so that the traffic information can be read accurately. .

[0038] Also, according to the map display device 100 of the present embodiment, the determination unit 105 moves the moving body out of a plurality of map images based on the current location detected by the position detection unit 103. It is possible to determine a map image including a route that is present. As a result, the user can preferentially check the information on the road that has been moved up to that point and the road that is scheduled to move in the future, so that necessary information can be obtained with certainty. [0039] Furthermore, according to the map display device 100 of the present embodiment, the display control unit 108 can superimpose and display the coordinate axes of a plurality of map images shifted by a predetermined amount. Therefore, if there are roads that overlap in the vertical direction at the same coordinates on different layers, the roads can be displayed on the top and bottom. As a result, the user can display the road on which the user is present in a visually recognizable state even when the roads are slightly overlapped in the vertical direction.

Example

[0040] Examples of the present invention will be described below. In this embodiment, for example, an example in which the map display device of the present invention is implemented by a navigation device mounted on a moving body such as a vehicle (including a four-wheeled vehicle and a two-wheeled vehicle) will be described.

[0041] (Hardware configuration of navigation device)

Next, a hardware configuration of the navigation apparatus 300 that is useful in the present embodiment will be described. FIG. 3 is a block diagram showing the hardware configuration of the navigation apparatus that is useful in this embodiment. In FIG. 3, the navigation device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an optical disk drive 310, an optical disk 307, an audio IZF (interface) 308, and a microphone 309. A speaker 310, an input device 311, a video IZF 312, a display 313, a communication IZF 314, a GPS unit 315, various sensors 316, and a camera 317. Each component 301 to 317 is connected by a bus 320.

First, the CPU 301 governs overall control of the navigation device 300. The ROM 302 records programs such as a boot program and a data update program. In addition, RAM 303 is used as a work area for CPU 301. That is, the CPU 301 controls the entire navigation device 300 by executing various programs recorded in the ROM 302 while using the RAM 303 as a work area.

The magnetic disk drive 304 controls reading and writing of data to the magnetic disk 305 according to the control of the CPU 301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, HD (node disk) or FD (flexible disk) can be used. In addition, the optical disk drive 306 controls reading and writing of data with respect to the optical disk 307 according to the control of the CPU 301. The optical disc 307 is a detachable recording medium from which data is read according to the control of the optical disc drive 306. The optical disk 307 can use a writable recording medium. The removable recording medium may be a power MO of the optical disk 307, a memory card, or the like.

Examples of information recorded on the magnetic disk 305 and the optical disk 307 include map information and function information. Map information consists of multiple map images (layers) divided by road type. Specifically, for example, it is composed of a toll road layer, a general road layer, a tunnel / subway layer, and the like. Each map image includes background data that represents features (features) such as buildings, rivers, and the ground surface, and road shape data that represents the shape of the road. Data file.

[0046] The road shape data further includes traffic condition data. The traffic condition data includes, for example, the presence or absence of traffic lights or pedestrian crossings for each node, the presence or absence of junctions on expressways, the length (distance) for each link, road width, direction of travel, road type ( Highway, toll road, general road, etc.) are included.

[0047] The function information is three-dimensional data representing the shape of the facility on the map, character data representing the description of the facility, and other various data other than the map information. Map images and function information are recorded in blocks divided by road type, district, or function. In addition, for example, the function information is recorded in a state where each function can be divided into a plurality of blocks so as to realize one function.

[0048] In addition to the above-described 3D data and character data, the function information is data for realizing functions such as program data that realizes route search, calculation of required time, route guidance, and the like. The map information and function information are composed of a plurality of data files divided by road type, district or function.

The audio IZF 308 is connected to a microphone 309 for audio input and a speaker 310 for audio output. The voice received by the microphone 309 is AZD converted in the voice IZF308. For example, the microphone 309 is installed near the sun visor of the vehicle. But you can. From the speaker 310, a sound obtained by DZA-converting a predetermined sound signal in the sound IZF 308 is output. Note that sound input from the microphone 309 can be recorded on the magnetic disk 305 or the optical disk 307 as sound data.

[0050] Examples of the input device 311 include a remote controller having a plurality of keys for inputting characters, numerical values, and various instructions, a keyboard, and a touch panel. The input device 311 may be realized by any one form of a remote control, a keyboard, and a touch panel. The input device 311 may be realized by a plurality of forms.

[0051] The video IZF 312 is connected to the display 313. Specifically, the video IZF312 is output from, for example, a graphic controller that controls the entire display 313, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. It is configured by a control IC that controls the display 313 based on image data.

[0052] Display 313 displays icons, cursors, menus, windows, or various data such as characters and images. The map is drawn two-dimensionally or three-dimensionally on the display 313 by superimposing the above-described map images according to the coordinate axes. On the map image displayed on the display 313, a mark or the like indicating the current position of the vehicle equipped with the navigation device 300 can be displayed in an overlapping manner. The current position of the vehicle is calculated by the CPU 301 and displayed on the layer including the road where the vehicle exists.

[0053] As the display 313, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be used. The display 313 is installed near the dashboard of the vehicle, for example. A plurality of displays 313 may be installed on the vehicle, for example, near the dashboard of the vehicle or around the rear seat of the vehicle.

Communication IZF 314 is connected to a network via radio and functions as an interface between navigation device 300 and CPU 301. The communication I / F 314 is further connected to a communication network such as the Internet via radio and functions as an interface between the communication network and the CPU 301.

[0055] Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like. In particular, Communication IZF314 is composed of, for example, FM tuner, VICS (Vehicle Information and Communication System) Z beacon Resino, wireless navigation device, and other navigation devices, and roads such as traffic congestion and traffic regulations where VICS center power is also distributed. Get traffic information. VICS is a registered trademark.

[0056] The GPS unit 315 receives radio waves from GPS satellites and outputs information indicating the current position of the vehicle. The output information of the GPS unit 315 is used when the CPU 301 calculates the current position of the vehicle together with output values of various sensors 316 described later. The information indicating the current position is information that identifies one point on the map information, such as latitude'longitude and altitude.

[0057] Various sensors 316 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor, an acceleration sensor, and an angular velocity sensor. The output values of the various sensors 316 are used by the CPU 301 to calculate the current position of the vehicle and the amount of change in speed and direction.

[0058] The camera 317 captures an image inside or outside the vehicle. The image can be either a still image or a moving image.For example, the camera 317 captures the behavior of passengers inside the vehicle, and the captured image is output to a recording medium such as the magnetic disk 305 or the optical disk 307 via the image IZF312. To do. In addition, the situation outside the vehicle is photographed by the camera 317, and the photographed image is output to a recording medium such as the magnetic disk 305 and the optical disk 307 via the video IZF 312. In addition, the camera 317 has an infrared camera function, and the surface temperature distribution of an object existing inside the vehicle can be relatively compared based on video information captured using the infrared camera function. . In addition, the video output to the recording medium is overwritten and saved.

[0059] The display unit 101, the storage unit 102, the position detection unit 103, the height detection unit 104, the determination unit 105, the acquisition unit 106, the tying unit 107, and the display control unit 108 included in the map display device 100 illustrated in FIG. The CPU 301 executes predetermined programs using programs and data recorded in the ROM 302, RAM 303, magnetic disk 305, optical disk 307, etc. in the navigation device 300 shown in FIG. The function is realized by controlling the.

[0060] That is, the navigation device 300 of the present embodiment is not included in the navigation device 300. By executing the map display program recorded in the ROM 302 as a recording medium, the functions of the map display device 100 shown in FIG. 1 can be executed by the map display processing procedure shown in FIG.

[0061] (Contents of processing of navigation device 300)

Next, the processing contents of the navigation device 300 will be described. FIG. 4 is a flowchart showing the contents of processing of the navigation device. In the flowchart of FIG. 4, first, the vehicle waits until the vehicle starts to travel (step S401: No loop). When the vehicle starts to travel (step S401: Yes), the current position of the vehicle is detected (step S402). Here, the current location of the vehicle detects one point on the map information by detecting the latitude, longitude, and altitude.

[0062] Next, based on the current location of the vehicle detected in step S402, it is determined whether or not the vehicle is traveling on a toll road (step S403). In Figure 4, the map information is composed of a toll road layer and a general road layer.

[0063] If it is determined in step S403 that the vehicle is traveling on a toll road (step S403: Yes), the toll road layer is highlighted and displayed (step S404). On the other hand, if it is not determined in step S403 that the vehicle is traveling on a toll road (step S403: No), the general road layer is highlighted and displayed (step S405).

[0064] Then, road traffic information is acquired (step S406), and is associated with the layer highlighted in step S404 or step S405 (step S407). Next, it is determined whether or not it is possible to display a layer other than the layer associated with the road traffic information in step S407 (step S408). In step S408, whether or not to display another layer may be determined by accepting a selection by the user.

[0065] When another layer is displayed in step S408 (step S408: Yes), the other axes are displayed by shifting the coordinate axes by a predetermined amount to the layer to which the road traffic information is linked in step S407, respectively. (Step S409). On the other hand, when other layers are not displayed (step S408: No), only the layer associated with the road traffic information is displayed in step S407, and the process proceeds to step S410.

[0066] Then, it is determined whether or not the vehicle has finished running (step S410), and the running is finished. If this is the case (step S410: Yes), the series of processing ends.

[0067] On the other hand, if the traveling is not completed in step S410 (step S410: No), the process returns to step S402 and the subsequent processing is repeated.

[0068] In the flowchart of FIG. 4, the map information is a force composed of a toll road layer and a general road layer. Specifically, for example, a configuration including a tunnel / subway layer or a sidewalk layer may be used.

Further, in the flowchart of FIG. 4, the force that each coordinate axis is shifted by a predetermined amount in step S409 and displayed is not limited to this. Specifically, for example, the coordinate axes may be superimposed or may not be transmitted without being shifted by a predetermined amount.

[0070] (Example of layers for each type of road)

Next, the layers for each type of road will be described with reference to FIG. FIG. 5 is an explanatory diagram showing an example of a layer for each type of road. FIG. 5 shows a toll road layer 501, a general road layer 502, a tunnel / subway layer 503, and a current point mark 504.

[0071] The toll road layer 501 displays road information related to toll roads such as expressways. In FIG. 5, since the vehicle is traveling on a toll road, the current road mark 504 of the vehicle is displayed on the toll road layer 501 and the road traffic information is linked. Here, the road traffic information is, for example, traffic jam information, and is represented by an arrow. Further, the road traffic information may be linked to a layer where the vehicle is not traveling. In this case, when displaying the map image superimposed, it may be displayed transparently!

[0072] The general road layer 502 displays information on roads other than toll roads and trains operating on the ground. Tunnel / Subway Layer 503 displays information about roads and underground railways in the tunnel. The ground station in the general road layer 502 may be expressed as a convex, and the underground station in the tunnel / subway layer 503 may be expressed as a concave. In addition, animation may be displayed in each layer in conjunction with train, bus, and airplane operations.

[0073] As shown in FIG. 5, the map information is divided into layers for each type of road. 5 and optical disc 307. Further, for example, the map information may be divided into layers based only on the height of the road regardless of the type of road. Specifically, for example, it may be divided into an air layer, a ground layer, an underground layer, and the like. Furthermore, map information may divide a vehicle travel layer and a pedestrian layer, for example.

[0074] (An example of a display screen that displays map images superimposed)

Next, with reference to FIG. 6, an example of a display screen that displays map images in a superimposed manner will be described. FIG. 6 is an explanatory diagram showing an example of a display screen that displays map images in a superimposed manner. FIG. 6 shows map information 601 in which a toll road layer 501, a general road layer 502, and a tunnel / subway layer 503 are superimposed. The map information 601 may be displayed with the coordinate axes of each layer shifted by a predetermined amount and superimposed, or may be displayed without being shifted by a predetermined amount.

[0075] In Fig. 6, the coordinate axes of the respective layers are shifted by a predetermined amount and displayed in an overlapping manner. Thus, the user can display the portion where the toll road and the general road are actually overlapped on the map information 601 in a state where they can be seen from each other.

Note that in the explanatory diagram of FIG. 6, the force is displayed by superimposing the coordinate axes of the respective layers by a predetermined distance. For example, only the toll road layer 501 in which the vehicle is running may be displayed among the layers shown in FIG. 5 automatically or by accepting selection by the user.

[0077] (Another example of a display screen on which map images are superimposed)

Next, referring to FIG. 7, another example of the display screen that displays the map images in an overlapping manner will be described. FIG. 7 is an explanatory diagram showing another example of a display screen that displays map images in a superimposed manner. In Fig. 7, the map information is displayed with the coordinate axes aligned without making each layer transparent.

In FIG. 7, the height of the current location of the vehicle is expressed by changing the size of the current location mark. Specifically, for example, when the vehicle is traveling on a toll road, that is, when traveling on a position higher than the ground, the current position of the vehicle is represented by a mark 701 having a shape larger than the standard shape. /! [0079] Further, when the vehicle is traveling on a general road, that is, when traveling on the ground, the current point of the vehicle is represented by a mark 702 having a standard shape. Further, when the vehicle is traveling on a tunnel, that is, when traveling on a position lower than the ground, the current position of the vehicle is represented by a mark 703 having a shape smaller than the standard shape. As a result, even when the user is driving on one of the roads that overlap each other, for example, by checking the size of the mark at the current location of the vehicle, You can identify the road you are on.

As described above, according to the navigation device 300 of the present embodiment, there is a moving body among the plurality of map images by the determination unit 105 based on the current location detected by the position detection unit 103. A map image including a road can be determined, and a map image including a road where the moving object is present can be highlighted and displayed by the display control unit 108.

[0081] Therefore, even in map information including a plurality of toll roads and general roads, it is possible to emphasize and display information on roads where a moving body exists. As a result, the user can preferentially check the information of the road on which the user exists, and thus can accurately read the information about the road.

[0082] Also, according to the navigation device 300 of the present embodiment, a plurality of map images are displayed based on the current location detected by the position detector 103 and the height detected by the height detector 104. Among them, it is possible to determine a map image including a road where a moving object exists. Therefore, it is possible to determine the power of a moving body that exists on any of the roads that overlap in the vertical direction. As a result, the user can preferentially check the information of the road on which he / she exists, so that the user can accurately read the information on the road even if he / she exists on any of the roads that overlap each other. it can.

[0083] Further, according to the navigation device 300 of the present embodiment, the display control unit 108 can display information on the road linked by the linking unit 107 together with the map image to be displayed with emphasis. it can. Therefore, it is possible to highlight and display information about roads associated with the map image to be highlighted. As a result, the user can preferentially display the information of the road where the user exists even in the map information where the toll road and the general road exist, so that the traffic information can be read accurately. . [0084] Also, according to the navigation device 300 of the present embodiment, the determination unit 105 moves the moving body among the plurality of map images based on the current location detected by the position detection unit 103. A map image including a route can be determined. As a result, the user can preferentially check the information on the road that has been moved up to that point and the road that is scheduled to move in the future, so that necessary information can be obtained with certainty.

[0085] Further, according to the navigation device 300 of the present embodiment, the display control unit 108 can superimpose and display the coordinate axes of a plurality of map images shifted by a predetermined amount. Therefore, if there are roads that overlap in the vertical direction at the same coordinates on different layers, the roads can be displayed on the top and bottom. As a result, the user can display the road on which the user is present in a visually recognizable state even when the roads are slightly overlapped in the vertical direction.

As described above, according to the map display device, map display method, map display program, and recording medium of the present invention, the vehicle detected by the GPS unit 315 and the various sensors 316 in the navigation device 300. Based on the current location, the layer that includes the road where the vehicle exists is determined from the layers for each type of road constituting the map information. Then, the video IZF 312 can highlight and display the layer including the road where the vehicle exists. As a result, the user can preferentially check the information of the road on which the user is present, and thus can accurately read the information related to the road.

Note that the map display method described in the present embodiment can be realized by executing a prepared program on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed when the recording medium force is also read by the computer. The program may be a transmission medium that can be distributed through a network such as the Internet.

Claims

The scope of the claims

[1] In a map display device that displays a combination of multiple map images classified by road type,

Position detecting means for detecting the current position of the moving body;

Based on the current location detected by the position detecting means, a judging means for judging a map image including a road where the moving body is present among the plurality of map images, and a map image judged by the judging means A display control means for emphasizing and displaying the map display device.

[2] comprising a height detection means for detecting the height of the current position of the moving body,

The determination means includes a road on which the moving body is present among a plurality of map images based on the current point detected by the position detection means and the height detected by the height detection means. The map display device according to claim 1, wherein a map image to be determined is determined.

[3] acquisition means for acquiring information about the road;

Linking means for linking the information acquired by the acquisition means to a map image including a road where the moving body is present among the plurality of map images,

2. The map display device according to claim 1, wherein the display control unit displays the information associated with the association unit together with the map image to be displayed with emphasis.

[4] The determining means determines a map image including a route along which the moving body is moving among a plurality of map images based on the current location detected by the position detecting means. The map display device according to claim 1, wherein

[5] The display control means shifts the coordinate axes of the plurality of map images by a predetermined amount.

The map display device according to claim 1, wherein the map display device displays the images in a superimposed manner.

[6] The map information according to any one of claims 1 to 5, wherein one map image of the plurality of map information represents a toll road, and the other one map image represents a general road. The map display device described in 1.

[7] In a map display method that displays a combination of multiple map images divided by road type, A position detection step for detecting the current location of the moving object;

Based on the current location detected by the position detection step, a determination step of determining a map image including a road where the moving body is present among the plurality of map images, and a map image determined by the determination step A map display method, comprising: a display control step for highlighting and displaying.

[8] A map display program for causing a computer to execute the map display method according to claim 7.

[9] A computer-readable recording medium in which the map display program according to claim 8 is recorded.