WO2008056401A1

WO2008056401A1 - Map display device, map display method, map display program, and recording medium

Info

Publication number: WO2008056401A1
Application number: PCT/JP2006/322110
Authority: WO
Inventors: Makoto Yoshihashi; Kumiko Shudo; Koji Hirose
Original assignee: Pioneer Corporation; Increment P Corporation
Priority date: 2006-11-06
Filing date: 2006-11-06
Publication date: 2008-05-15
Also published as: JPWO2008056401A1

Abstract

A map display device (100) having a display section (101) for displaying map information, a direction detection section (102) for detecting the direction of movement, a speed detection section (103) for detecting the speed of a mobile body, a determination section (104) for determining whether or not the mobile body is traveling on a route having a curve, and a display control section (107) for controlling the display section (101). Depending on the result of detection and determination by the direction detection section (102), speed detection section (103), and determination section (104), the display control section (107) changes the position of a mark displayed on a display screen and representing the current position of the mobile body. The change is made so that the region in front of the direction of movement of the mobile body is greater than the region behind the direction of movement of the mobile body or the region in the direction of a curve is greater than the region opposite the direction of the curve. After the change, the display control section (107) displays map information, in which the position of display of the mark is changed, on the display section (101). This enables map information on a further area can be confirmed.

Description

Specification

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

TECHNICAL FIELD [0001] The present invention relates to a map display device, a map display method, a map display program, and a recording medium that change a display position on a display screen of a mark that represents a current point of a moving object in accordance with a moving direction and a speed. . However, the 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

[0002] Conventionally, displaying information on a map screen 'When a menu window screen is synthesized and displayed, if the vehicle speed is lower than the judgment speed, the information display' displaying the menu window screen while animating it gives a sense of quality. Produce. For example, the information display 'menu window screen may be displayed while moving from the right side to the left side of the screen, or the information display' menu window screen itself may be displayed while being wiped in the information display 'menu window screen. On the other hand, if the vehicle speed exceeds the judgment speed, the information display 'menu window screen is displayed as a still image, so it is possible to realize a more appropriate map display while preventing the animation from being overly distracted. A map display device has been proposed (see, for example, Patent Document 1 below).

[0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2003-322529

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in the technique of Patent Document 1 described above, it is possible to determine whether the information display 'menu window screen is animated and displayed as a still image or not according to the vehicle speed. For example, when you want to check map information farther than when the vehicle is stopped, such as when driving at a high speed or driving on a curve, the map information display area cannot be changed! .

Means for solving the problem

[0005] In order to solve the above-described problems and achieve the object, the map display according to the invention of claim 1 The apparatus includes a display unit having a display screen for displaying a mark representing a current position of the moving object on the map information, a direction detecting unit for detecting a moving direction of the moving object, and the display unit to control the direction. By changing the display position on the display screen of the mark indicating the current location of the moving body based on the moving direction detected by the detecting means, the area ahead of the moving direction on the display screen of the map information is changed. Display control means for displaying the image so as to be wider than the area behind the moving direction.

[0006] Further, the map display method according to the invention of claim 7 includes a direction detecting step for detecting a moving direction of the moving body, and a display screen for displaying a mark representing the current location of the moving body on the map information. By controlling the display means having and changing the display position on the display screen of the mark representing the current location of the moving body based on the moving direction detected by the direction detecting step, the map information And a display control step of displaying a region in the front of the moving direction on the display screen so as to be wider than a region in the rear of the moving direction.

[0007] Further, a map display program according to claim 8 causes a computer to execute the map display method according to claim 7.

[0008] 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

[0009] FIG. 1 is a block diagram showing a functional configuration of a map display device according to an 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] FIG. 5 is an explanatory diagram showing a display position of a mark representing the current position of the vehicle when the map information is displayed with the direction of travel of the vehicle facing upward.

[Fig. 6] Fig. 6 shows the vehicle in the case where map information is displayed with the azimuth set up upwards. It is explanatory drawing which showed the display position of the mark showing both present location.

Explanation of symbols

[0010] 100 map display device

101 Display

102 Direction detector

103 Speed detector

104 Judgment part

105 Direction detector

106 Direction display setting section

107 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.

[0012] (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 illustrating a functional configuration of the map display device according to the embodiment.

In FIG. 1, a map display device 100 includes a display unit 101, a direction detection unit 102, a speed detection unit 103, a determination unit 104, a direction detection unit 105, a direction display setting unit 106, and display control. Part 1 07 and the like.

The display unit 101 includes a display screen that displays map information. Here, the map information is stored in a storage unit (not shown). The map information includes road network data that also has nodes and links, and image data drawn using features related to facilities, roads, and other terrain (mountains, rivers, land). The map information may include text information, information such as facility names and addresses, and road and facility images. The display unit 101 also displays a mark representing the current location of the moving object on the map information. The mark indicating the current location of the moving object is, for example, an arrow, and the direction of the mark is indicated on the map information. It may be configured to indicate the direction of the moving body.

The direction detection unit 102 detects the moving direction of the moving body. Specifically, for example, the moving direction of a moving object is detected from the output values of a GPS (Global Positioning System) receiver and various sensors. Specifically, the detection of the moving direction may be determined, for example, when the back gear is selected by a gear change mounted on a vehicle or the like, and the moving body is moving backward.

[0016] The speed detection unit 103 detects the speed of the moving object. Specifically, for example, an output value force such as a speed sensor or an acceleration sensor also detects the speed of the moving body. Further, the speed detection unit 103 may determine whether or not the force has detected a speed greater than a predetermined speed (restricted speed, legal speed) based on road information received by a receiving unit (not shown).

[0017] The determination unit 104 determines whether or not the moving body is moving along a path formed by a curve. Specifically, for example, it is determined whether or not the output value force of an acceleration sensor, an angular velocity sensor, or the like is moving along a route constituted by the moving body force S curve. Further, the determination as to whether or not the moving body is moving along a route constituted by a curve may be made by, for example, detecting the state of handle operation by the user.

[0018] The direction detection unit 105 detects the direction in which the moving body is moving. Specifically, for example, the azimuth in the traveling direction of the moving body is detected by an output value of an azimuth sensor or the like. In addition, the direction detection unit 105 detects the direction of the moving object. Specifically, for example, the direction of the moving body may be detected regardless of the traveling direction of the moving body.

The direction display setting unit 106 sets whether or not to fix the direction of the map information displayed on the display screen. The azimuth display setting unit 106 determines and controls whether to fix the azimuth of the map information on the display screen or to fix the traveling direction of the moving object, for example. Specifically, for example, when the orientation of map information is fixed, the upper part of the display screen always shows the north direction regardless of the moving direction of the moving body, and the lower part of the display screen always shows the south direction. Yes. Further, for example, when the traveling direction of the moving body is fixed, the map information is rotated in a state that matches the direction of the moving body detected by the direction detecting unit 105.

[0020] Display control unit 107 controls display unit 101 to display a display position on the display screen of a mark representing the current location of the moving object based on the movement direction detected by direction detection unit 102. By changing, the area in front of the moving direction on the map information display screen is displayed to be wider than the area behind in the moving direction. Specifically, for example, when the moving body is stopped, a mark is displayed at the center of the display screen so that surrounding map information can be seen evenly. When the moving body moves forward, the display position of the mark is changed in a direction in which the area of the moving body on the display screen expands, and the map information ahead of the moving body is displayed wider than the map information behind the moving body. To do. Therefore, the user can broaden the map information of the part that is likely to be used in the map information by displaying the map information of the point that will proceed in the future rather than the map information of the point that has passed. Information can be used effectively.

[0021] In addition, the display control unit 107 controls the display unit 101 to change the display position on the display screen of a mark representing the current location of the moving body in accordance with the speed detected by the speed detection unit 103. By changing, the area in front of the moving direction on the map information display screen is displayed to be wider than the area behind in the moving direction. Specifically, for example, when the speed of the moving body is high, the time to reach an arbitrary point is earlier than when the speed is low. Therefore, since the map information of the distance in the direction of travel is needed quickly, the display position of the mark is expanded so that the area in the direction of travel of the moving object is expanded on the display screen so that more distance map information can be displayed. To display the map information ahead of the moving direction wider than the area behind the moving direction.

[0022] Furthermore, the display control unit 107 controls the display unit 101, and during the period in which the speed is detected to be greater than the predetermined speed by the speed detection unit 103, a mark indicating the current location of the moving object is displayed. Does not display on the display screen. Specifically, for example, if you are moving beyond the speed limit, that is, if you are speeding, you can make the user visually confirm that it is speeding by deleting the mark. it can.

[0023] In addition, the display control unit 107 controls the display unit 101, and when the determination unit 104 determines that the moving body moves along the path formed by the force curve! By changing the display position of the mark indicating the current position of the moving object on the display screen to a position opposite to the curve direction based on the direction, the area of the curve direction on the map information display screen is changed to the curve position. The area is displayed so as to be wider than the area opposite to the direction. Specifically, For example, in the case of a route constituted by a curve, the traveling direction is the direction of the curve. Therefore, by changing the display position of the mark to a position opposite to the direction of the curve, the map information in the forward direction can be displayed wider than the map information in the backward direction.

[0024] The display control unit 107 controls the display unit 101 when the setting of the azimuth of the map information is not fixedly controlled by the azimuth display setting unit 106, and controls the direction of the moving object detected by the azimuth detection unit 105. Rotate and display the map information in a state that matches. Specifically, for example, the direction of the mark indicating the moving direction of the moving object is set so that it always faces the top of the display screen, and the map information is rotated and displayed in accordance with the direction.

[0025] In addition, the display control unit 107 controls the display unit 101 and controls the direction detected by the direction detection unit 105 when the direction of the map information is set to be fixedly controlled by the direction display setting unit 106. The direction of the mark indicating the moving direction of the moving object is changed according to. Specifically, for example, the orientation of the map information is fixed so that the upper part on the display screen always indicates the north direction, and the direction of the mark indicating the traveling direction of the moving object is changed and displayed according to the direction.

[0026] (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 direction detection unit 102 detects the moving direction of the moving body (step S20 Do, and the speed detection unit 103 detects the speed of the moving body (step S202), and the determination unit 104 By this, it is determined whether or not the moving body is moving along the path constituted by the curve (step S203).

[0027] Based on the detection results detected from step S201 to step S203, the display control unit 107 changes the display position of the mark representing the current location of the moving object on the display screen (step S204). Then, the map information whose display position has been changed in step S204 is displayed on the display unit 101 (step S205), and the series of processing ends.

In the flowchart of FIG. 2, in step S204, the display position of the mark representing the current location of the moving object on the display screen based on the detection result detected in step S201 from step S201 force. Is not limited to this. Absent. Specifically, for example, based on the detection result detected from any one or two of the steps S201 to S203, the display position of the mark indicating the current position of the moving object on the display screen is displayed. You can change it.

[0029] In the flowchart of Fig. 2, the moving direction of the moving body is detected, but the present invention is not limited to this. Specifically, for example, if the back gear is selected by a gear converter mounted on the vehicle, etc., even if the vehicle is stopped, the display position on the display screen of the mark representing the current position of the vehicle is the central force vehicle. It may be changed to a position opposite to the direction of travel.

[0030] As described above, according to the map display device 100 of the embodiment, the display on the display screen of the mark representing the current location of the moving object based on the moving direction detected by the direction detecting unit 102 By changing the position, the area in the moving direction on the map information display screen can be displayed wider than the area behind the moving direction. Thus, the user can display more necessary map information on the display screen by changing the display area of the map information in accordance with the moving direction of the moving body. Therefore, for example, even when the display screen is small, necessary map information can be efficiently displayed.

[0031] Further, according to the map display device 100 of the embodiment, the display position on the display screen of the mark representing the current location of the moving body is changed according to the speed detected by the speed detection unit 103. Thus, the area in the moving direction on the map information display screen can be displayed wider than the area behind the moving direction. Thus, as the speed increases, the area of the map information ahead in the direction of movement becomes wider. Can be confirmed.

[0032] Further, according to the map display device 100 of the embodiment, when the determination unit 104 determines that the moving body moves along the path formed by the force curve! Based on this, by changing the display position of the mark representing the current position of the moving object on the display screen to a position opposite to the curve direction, the area of the curve direction on the map information display screen is changed to the curve direction. Can be wider than the reverse region.

[0033] With this, even when the moving object approaches the curve, the user can move much of the necessary map information on the display screen by moving the mark representing the current point of the moving object in the horizontal direction. Can be displayed. Therefore, for example, even when the display screen is small, necessary map information can be displayed efficiently.

[0034] Also, according to the map display device 100 of the embodiment, when the direction display setting unit 106 is set not to fix the direction of the map information, the moving object detected by the direction detection unit 105 is detected. Map information can be rotated and displayed in a state that matches the direction. This makes it easier for the user to visually confirm the map information because the orientation on the display screen is the same as the orientation that the user is actually facing.

[0035] Also, according to the map display device 100 of the embodiment, when the orientation display setting unit 106 is set to fix the orientation of the map information, the orientation is detected according to the orientation detected by the orientation detection unit 105. The moving object can be displayed by changing the direction of the mark indicating the direction of the moving object. As a result, the direction of the map information on the display screen does not always change and the map information is not rotated, so that the user can easily grasp the situation around him / herself when he / she gets lost.

[0036] Further, according to the map display device 100 of the embodiment, the speed detection unit 103 displays a mark representing the current location of the moving object during the period when the speed is detected to be greater than the predetermined speed. Can not be displayed on the screen. As a result, the user can visually check if he / she accidentally runs at a speed higher than the speed limit.

Example

[0037] 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.

[0038] (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. Speaker 310, input device 311, video IZF312, display 313, communication IZF314, A GPS unit 315, various sensors 316, and a camera 317 are provided. 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, a data update program, and a display control program. The RAM 303 is used as a work area for the 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 on 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 data reading / writing 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.

[0042] Examples of information recorded on the magnetic disk 305 and the optical disk 307 include map information and function data. The map information includes background data that represents features (figures) such as buildings, rivers, and the ground surface, and road shape data that represents road shapes, and is divided into multiple data files. It is constituted by. In addition, the current location of the vehicle is superimposed on the map information.

[0043] The road shape data further includes traffic condition data. The traffic condition data includes, for example, the presence / absence of traffic lights and pedestrian crossings, the presence / absence of highway doorways and junctions, the length (distance) of each link, road width, direction of travel, road type (high speed). Road, toll road, general road, etc.).

The functional data 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 information and functions Data is recorded in blocks divided by district or function. Specifically, for example, map information is recorded in such a state that each map can be divided into blocks so that each map represents a predetermined district on the map displayed on the display screen. Also, for example, the function data is recorded in a state where each function can be divided into a plurality of blocks so as to realize one function.

[0045] In addition to the above-described 3D data and character data, the function data is data for realizing functions such as program data that realizes route search, calculation of required time, route guidance, and the like. . Map information and function data are each composed of multiple data files divided by 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 may be installed near the sun visor of the vehicle, and the number may be one or more. 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.

[0047] Examples of the input device 311 include a remote controller, a keyboard, and a touch panel provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. The input device 311 may be realized by any one form of the remote control, the keyboard, and the touch panel. The input device 311 may be realized by a plurality of forms.

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.

The display 313 displays icons, cursors, menus, windows, or various data such as characters and images. On the display 313, the above-described map information is drawn two-dimensionally or three-dimensionally. The map information displayed on the display 313 includes a mark indicating the current position and traveling direction of the vehicle equipped with the navigation device 300. Can be displayed in layers. The current position of the vehicle is calculated by CPU301

[0050] In addition, the mark indicating the current position of the vehicle displayed on the display 313 has a variable display position on the display 313 according to the traveling direction of the vehicle, the traveling speed, and the like. Further, the direction of the map information displayed on the display 313 may be such that the direction in which the vehicle is traveling always faces the top of the display 313 and the map information is rotated in accordance with the direction. The orientation of the map information displayed on the display 313 is displayed with the orientation of the map information fixed in advance, and the direction of the mark on the display screen can be changed according to the direction in which the vehicle is traveling. Good.

[0051] 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.

[0053] Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like. Specifically, the communication IZF314 is composed of, for example, an FM tuner, VICS (Vehicle Information and Communication System) Z beacon resino, wireless navigation device, and other navigation devices. Get road traffic information such as traffic regulations. VICS is a registered trademark.

[0054] 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.

[0055] Various sensors 316 are vehicle speed sensors, acceleration sensors, angular velocity sensors, azimuth sensors, etc. Outputs information for judging the position and behavior of the vehicle. 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. Various sensors 316 output information for determining whether or not the vehicle is driving during a curve. Then, the CPU 301 determines whether the vehicle is traveling on a curve.

[0056] 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.

[0057] The display unit 101, the direction detection unit 102, the speed detection unit 103, the determination unit 104, the direction detection unit 105, the direction display setting unit 106, and the display control unit 107 included in the map display device 100 illustrated in FIG. The CPU 301 executes a predetermined program using the 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. 3, and controls each part in the navigation device 300. The function is realized.

That is, the navigation device 300 of the embodiment includes the map display device 100 shown in FIG. 1 by executing the map display program recorded in the ROM 302 as a recording medium in the navigation device 300. The function can be executed by the map display processing procedure shown in Fig. 2.

[0059] (Contents of navigation device processing)

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 wait until the navigation device 300 is turned on (step S40). 1: No loop) When the power is turned on (step S401: Yes), the current location of the host vehicle is acquired (step S402).

[0060] Next, it is determined whether or not the vehicle is traveling (step S403). Here, it is assumed that the mark representing the current point of the vehicle is at the center point of the display 313 (display screen) when the vehicle is stopped. If the vehicle is traveling in step S403 (step S403: Yes), it is determined whether the vehicle is moving forward (step S404).

[0061] When the vehicle is moving forward in step S404 (step S404: Yes), the mark indicating the current position of the vehicle is changed to the lower part of the display screen to expand the display range of the map information in front of the vehicle. (Step S405). Also, if the vehicle is moving backward in step S404 (step S404: No), or if the back gear is selected by a gear converter mounted on the vehicle, the map information behind the vehicle In order to widen the display range, the mark representing the current position of the vehicle is changed upward on the display screen (step S406).

[0062] Next, it is determined whether or not the vehicle is traveling on a curve (step S407). If the vehicle is running on a curve (step S407: Yes), it is determined whether the vehicle is on the left curve (step S408).

[0063] If it is determined in step S408 that the vehicle is a left curve (step S408: Yes), a mark indicating the current position of the vehicle is used to expand the display range of the map information in the vehicle traveling direction. Is changed to the right on the display screen (step S409). If it is determined in step S408 that the vehicle is on the right curve (step S408: No), a mark representing the vehicle's current location is displayed on the display screen in order to widen the map information display range of the vehicle's direction of travel. (Step S410).

[0064] On the other hand, if the vehicle is not driving in a curve in step S407 (step S407: No), the mark representing the current position of the vehicle has not changed in the left-right direction! /, So proceed directly to step S411, and thereafter Perform processing.

Next, the traveling speed of the vehicle is detected (step S411). Based on the traveling speed detected in step S411, the display position on the display screen of the mark representing the current location of the vehicle is adjusted (step S412). In step S412, the display position is adjusted by, for example, displaying a mark indicating the current position of the vehicle as the traveling speed increases. Change gradually downward on the surface. Then, it is determined whether or not the power of the navigation device 300 is turned off (step S413), and when the power is turned off (step S413: Yes), a series of processing ends.

[0066] On the other hand, if the vehicle is not traveling in step S403 (step S403: No), the mark representing the current position of the vehicle remains at the center of the display screen, and the process proceeds to step S413, where the power is turned off. Judge whether or not it is correct. If the power is not turned off in step S413 (step S413: No), the process returns to step S402, and the subsequent processing is repeated.

In the flowchart of FIG. 4, the case has been described in which the map information is rotated in a state in which the direction of the map information is aligned with the direction of the traveling direction of the vehicle without fixed control. However, the present invention is not limited to this. Absent. Specifically, for example, the orientation of the map information may be fixedly controlled, and the direction of the mark representing the current location of the vehicle may be changed to match the orientation of the traveling direction of the vehicle. In this case, the lower part of the display screen in FIG. 4 is the rear when facing the traveling direction, and the right side of the display screen is the right when facing the traveling direction.

[0068] (Display position of a mark indicating the current position of the vehicle when map information is displayed with the direction of travel of the vehicle facing up)

Next, the display position of the mark representing the current location of the vehicle when the map information is displayed with the direction of travel of the vehicle facing upward will be described with reference to FIG. FIG. 5 is an explanatory diagram showing the display position of a mark representing the current location of the vehicle when the map information is displayed with the direction of travel of the vehicle facing up.

[0069] FIG. 5 shows a display position corresponding to a traveling state of a mark representing the current position of the vehicle on the display 313 (display screen). First, a mark is displayed at position 501 when the vehicle is stopped. The position 501 is the center of the display screen or a position that is pre-set about 3/4 in the vertical direction so that the surroundings of the vehicle can be seen as much as possible when the vehicle is stopped. When the vehicle starts traveling and the traveling speed reaches 20 kmZ, the mark display position is changed to position 502.

[0070] Further, when the traveling speed reaches 40 kmZh, the mark display position is changed to position 503, and when the traveling speed reaches 60 kmZh, the mark display position is changed to position 504. Also, even if For example, when driving on a road with a speed limit (legal speed) of 60 kmZh at a speed of 60 kmZh or higher, the mark indicating the current location of the vehicle may not be displayed on the display screen. As a result, the user can visually check when the host vehicle is traveling beyond the speed limit.

[0071] Further, when the back gear is selected by changing the gear mounted on the vehicle, the display position of the mark indicating the current position of the vehicle is changed to position 505. As a result, the user can visually confirm that the gear is a knock gear at the start of traveling, and thus can prevent the vehicle from starting backward by mistake.

[0072] When the vehicle approaches a curve, the display position of the mark representing the current position of the vehicle is changed so that the map information ahead in the traveling direction is displayed widely. Specifically, for example, when the vehicle is traveling on a right curve at a traveling speed of 40 kmZh, the display position of a mark representing the current location of the vehicle is changed to position 506. Similarly, when the vehicle travels on the left curve at a traveling speed of 40 kmZh, the display position of the mark representing the current position of the vehicle is changed to position 507.

Furthermore, when the acceleration applied to the side surface of the vehicle is greater than a predetermined value G, the display position of the mark representing the current location of the vehicle is changed to position 508. As a result, the user can visually confirm that the vehicle has reached the curve at a speed that cannot bend the force curve, so that the road force can also be prevented from deviating.

[0074] In addition, in the explanatory diagram of FIG. 5, when the traveling speed increases in units of 20 kmZh, specifically, when the driving speed is 20 kmZh, 40 kmZh, 60 kmZh, the current position of the vehicle is indicated. Force that changes the display position of the mark is not limited to this. Specifically, for example, the unit of speed for changing the mark display position may be variable depending on user settings such as lOkmZh units and lkmZh units.

In the explanatory diagram of FIG. 5, when the acceleration applied to the vehicle is larger than a predetermined value G, the display position of the mark representing the current position of the vehicle is changed to the position 508. However, the present invention is not limited to this. is not. Specifically, for example, as the curvature of the curve increases, the display position of the mark representing the current position of the vehicle may be gradually changed to a position away from the center. [0076] (Display position of the mark that indicates the current location of the vehicle when map information is displayed with the azimuth direction set to the top)

Next, with reference to FIG. 6, the display position of the mark representing the current location of the vehicle when the map information is displayed with the azimuth determined upward will be described. FIG. 6 is an explanatory diagram showing a display position of a mark representing the current position of the vehicle when the map information is displayed with the predetermined orientation facing up. In Fig. 6, the azimuth is expressed in eight directions and is displayed with north facing up.

[0077] In FIG. 6, the mark indicating the current position of the vehicle when the vehicle traveling in the direction: northeast and traveling speed: 5kmZMNo. The change in display position and mark orientation is shown. The vehicle is traveling from azimuth: northeast, traveling speed: 5kmZh (No. 0) to azimuth: southwest, speed: 65kmZM No. 12) while changing azimuth and speed.

[0078] As shown in FIG. 6, the mark representing the current point of the vehicle moves away from the center position as the traveling speed increases. In addition, the direction of the mark representing the current position of the vehicle is displayed in the direction shown in FIG. 6 when the traveling direction of the vehicle is directed to eight directions.

As described above, according to the navigation device 300 of the embodiment, the display position on the display screen of the mark representing the current location of the moving body is determined based on the moving direction detected by the direction detecting unit 102. By changing the area, the area in the moving direction on the map information display screen can be displayed wider than the area behind the moving direction. Thus, the user can display more necessary map information on the display screen by changing the display area of the map information in accordance with the moving direction of the moving body. Therefore, for example, even when the display screen is small, necessary map information can be efficiently displayed.

[0080] Also, according to the navigation device 300 of the embodiment, the display position on the display screen of the mark representing the current location of the moving body is changed according to the speed detected by the speed detection unit 103. Thus, the area in the moving direction on the map information display screen can be displayed wider than the area behind the moving direction. As a result, as the speed increases, the area of the map information ahead in the direction of movement increases, so the user can move faster. When distant map information is needed quickly, it is possible to confirm the map information farther away.

[0081] Also, according to the navigation device 300 of the embodiment, when the determination unit 104 determines that the moving body moves along the route formed by the force curve! By changing the display position of the mark indicating the current location of the moving object on the display screen to a position opposite to the curve direction, the area of the curve direction on the map information display screen is the curve direction. It can be made wider than the reverse region.

Accordingly, even when the moving object approaches the curve, the user can move much of the necessary map information on the display screen by moving the mark representing the current point of the moving object in the horizontal direction. Can be displayed. Therefore, for example, even when the display screen is small, necessary map information can be displayed efficiently.

Further, according to the navigation apparatus 300 of the embodiment, when the setting for not fixedly controlling the direction of the map information is set by the direction display setting unit 106, the direction of the moving object detected by the direction detection unit 105 The map information can be rotated and displayed in a state adapted to. This makes it easier for the user to visually confirm the map information because the orientation on the display screen is the same as the orientation that the user is actually facing.

Further, according to the navigation device 300 of the embodiment, when the direction display setting unit 106 is set to fix the direction of the map information, the navigation apparatus 300 moves according to the direction detected by the direction detection unit 105. It can be displayed by moving the body and changing the direction of the mark indicating the direction. As a result, the direction of the map information on the display screen does not always change and the map information is not rotated, so that the user can easily grasp the situation around him / herself when he / she gets lost.

Further, according to the navigation device 300 of the embodiment, the speed detection unit 103 detects a speed greater than a predetermined speed and displays a mark representing the current location of the moving object during the display period. Can not be displayed on top. As a result, the user can visually check if he / she accidentally runs at a speed higher than the speed limit.

[0086] As described above, according to the map display device, the map display method, the map display program, and the recording medium of the present invention, the navigation device 300 is a vehicle detected by the GPS unit 315, various sensors 316, or the like. Based on the direction and speed of travel! The display position of the mark representing the current location of the vehicle on the i 313 can be changed. As a result, the user can display a larger amount of necessary map information on the display 313 by changing the display area of the map information in accordance with the moving direction of the moving body. Therefore, for example, even when the display 313 is small, necessary map information can be efficiently displayed.

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, a workstation, or a mobile terminal device (mobile phone). it can. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM ゝ MO, and a DVD, and is executed by being read by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

Claims

The scope of the claims

[1] Display means having a display screen for displaying a mark representing the current location of the moving object on the map information;

Direction detecting means for detecting a moving direction of the moving body;

By controlling the display means and changing the display position on the display screen of the mark representing the current location of the moving body based on the moving direction detected by the direction detecting means, the map information Display control means for displaying an area on the display screen in front of the moving direction so as to be wider than an area on the rear in the moving direction;

A map display device comprising:

[2] comprising a speed detection means for detecting the speed of the moving body,

The display control means controls the display means to change the display position on the display screen of the mark representing the current location of the moving body in accordance with the speed detected by the speed detection means, 2. The map display device according to claim 1, wherein the map information is displayed so that a region ahead in the movement direction on the display screen is wider than a region behind the movement direction.

[3] The vehicle comprises a judging means for judging whether or not the moving body is moving along a path constituted by a curve,

The display control means controls the display means when the judging means judges that the moving body is moving along a path constituted by a curve, and based on the direction of the curve, the moving body By changing the display position of the mark representing the current position on the display screen to a position opposite to the direction of the curve, the area of the curve direction on the display screen of the map information is changed to the position of the curve. 2. The map display device according to claim 1, wherein the map display device is displayed so as to be wider than a region opposite to the direction.

[4] Direction detecting means for detecting the direction of movement of the moving body,

Azimuth display setting means for setting whether or not to fix the direction of the map information displayed on the display screen,

The display control means controls the display means when the azimuth display setting means is set so as not to fix the azimuth of the map information. The map display device according to any one of claims 1 to 3, wherein the map information is rotated and displayed in a state in accordance with the direction of the detected moving body.

[5] The display control means controls the display means and is detected by the direction detection means when the direction of the map information is fixedly controlled by the direction display setting means. 5. The map display device according to claim 4, wherein the map display device displays the direction of the mark representing the direction in which the moving body is moving in accordance with the direction.

[6] The display control means controls the display means during a period in which a speed greater than a predetermined speed is detected by the speed detection means, and displays a mark indicating the current location of the moving object on the display screen. The map display device according to claim 2, wherein the map display device is not displayed.

[7] a direction detecting step for detecting the moving direction of the moving body;

A mark representing the current location of the moving object based on the moving direction detected by the direction detecting step by controlling display means having a display screen for displaying a mark representing the current location of the moving object on map information A display control step of displaying the map information on the display screen in such a manner that the area ahead of the moving direction on the display screen is wider than the area behind the moving direction by changing the display position on the display screen.

The map display method characterized by including.

[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.