WO2007119493A1

WO2007119493A1 - Map display device and map display method

Info

Publication number: WO2007119493A1
Application number: PCT/JP2007/055903
Authority: WO
Inventors: Takahito Ogawa
Original assignee: Pioneer Corporation
Priority date: 2006-04-17
Filing date: 2007-03-22
Publication date: 2007-10-25

Abstract

A map display device where the user can easily recognize a one-way road. The map display device is, for example, a navigation device and has display means, one-way road determination means, and drawn object display means. The display means displays map information on a display screen. The one-way road determination means determines, based on link information of the specific road, whether a specific road displayed on the display screen is a one-way road. When it is determined that the specific road is one-way traffic, the drawn object display means displays, based on the link information, a drawn object that directs the advance direction on the entire part of the specific road in a superposed manner. This enables the user to easily recognize the one-way road.

Description

Specification

Map display device and map display method

Technical field

The present invention relates to a map display device that displays map information.

Background art

[0002] Generally, a navigation device displays a predetermined range of map information on a display device centering on the current position of a moving body such as a vehicle. The user can know the current position of the vehicle by looking at the displayed map information. The navigation device searches for a route to the destination and displays the route on the display device. The user can know the route to the destination by looking at the route displayed on the display device. Recently, a navigation device that further displays a road sign icon on the displayed map information is known in order to provide traffic information more accurately to the user.

[0003] It should be noted that Patent Document 1 below describes a navigation device that displays a road sign icon on map information indicating an intersection that a user is about to enter.

[0004] However, when a user uses a known navigation device to display a wide-area map of the center of a large city, the one-way streets are densely packed in the center of the large city. A large number of road sign icons are displayed on the display screen. In this case, the user cannot easily recognize the road that becomes one-way because the power of which road becomes one-way becomes difficult to be divided. On the other hand, even if a user displays a detailed map of a road that is not crowded using a known navigation device, a road sign icon indicating one-way traffic may not be displayed on the display screen. In that case, the user cannot recognize a one-way road.

[0005] This is not limited to navigation devices, but also occurs in other map display devices such as a map display device that displays a map by starting a map display program on a personal computer (PC). obtain.

[0006] Especially in the case of a navigation device, if the user cannot easily recognize a one-way road, the user may make a mistake such as causing his / her vehicle to enter the road from a direction opposite to the one-way direction. Can cause entry.

[0007] Patent Document 1: JP 2001-84487 A

Disclosure of the invention

Problems to be solved by the invention

[0008] Examples of problems to be solved by the present invention include the above. The present invention provides a map display device that allows a user to easily recognize a one-way road.

[0009] In one aspect of the present invention, the map display device includes display means for displaying map information on a display screen, and the predetermined information based on link information of a predetermined road displayed on the display screen! If it is determined that the predetermined road is one-way, and the one-way determination means for determining whether or not the road is one-way! /, The progress is made based on the link information. And a drawing display means for displaying a drawing indicating the direction superimposed on the entire predetermined road.

[0010] The map display device described above is, for example, a navigation device, and includes display means, one-way determination means, and drawn matter display means. The display means displays the map information on the display screen. The one-way determining means determines whether the predetermined road is one-way or not based on link information of the predetermined road displayed on the display screen. When it is determined that the predetermined road is one-way, the drawing display means displays the drawing indicating the traveling direction based on the link information so as to be superimposed on the entire predetermined road. . Thereby, the user can easily recognize a one-way road.

[0011] In a specific embodiment of the map display device, the drawn matter display means continuously superimposes and displays a drawn matter of an arrow indicating the traveling direction on the entire predetermined road.

[0012] In another aspect of the present invention, a map display method includes: a display step of displaying map information on a display screen; and the predetermined display based on link information of a predetermined road displayed on the display screen! If it is determined that the road is one-way! /, A one-way determination step that determines whether or not the road is one-way, and if the predetermined road is determined to be one-way, the progress is made based on the link information. A drawing display step for displaying a drawing pointing in the direction superimposed on the entire predetermined road; It is characterized by providing. This method also allows the user to easily recognize a one-way road.

In still another aspect of the present invention, a map display program executed by a computer includes display means for displaying map information on a display screen, and link information on a predetermined road displayed on the display screen. Based on the link information, the one-way determining means for determining whether the predetermined road is one-way or not. The computer is caused to function as a drawn object display means for displaying a drawn object indicating a direction superimposed on the entire predetermined road. The above map display device can be realized by causing the computer to execute this map display program. The map display program can be handled in a state stored in a storage medium.

Brief Description of Drawings

FIG. 1 is a block diagram showing a schematic configuration of a navigation device.

FIG. 2 is an example of road map information displayed on the display screen of the map display device.

FIG. 3 is an example of road map information displayed on the display screen of the navigation device.

FIG. 4 is a flowchart of map display processing according to the present embodiment.

FIG. 5 is a modification of the road map information displayed on the display screen of the map display device. Explanation of symbols

[0015] 1 · · 'Navigation device

22 · · -CPU

23 · · -ROM

24 · · -RAM

36 · · · Data storage unit

44 · "Display

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The following description shows an example in which the present invention is applied to a vehicle navigation apparatus.

[0017] (Navigation device) FIG. 1 shows the configuration of the navigation device 1. As shown in FIG. 1, the navigation device 1 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 3 1, a data storage unit 36, a communication interface 37, a communication device 38, a display unit 40, An audio output unit 50 and an input device 60 are provided.

[0018] The self-supporting positioning apparatus 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects the acceleration of the vehicle, and outputs acceleration data. The angular velocity sensor 12 also has, for example, a vibration gyro force, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse having a pulse signal force that is generated as the vehicle wheel rotates.

[0019] The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle from latitude and longitude information.

The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24, and controls the entire navigation apparatus 1.

The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative bearing data, angular velocity data, GPS positioning data, absolute bearing data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data set in advance by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

[0022] A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50, and an input device 60 are a bus line 30 Are connected to each other via The disc drive 31 reads out and outputs content data such as music data and video data from a disc 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive.

[0024] The data storage unit 36 is configured by, for example, an HDD or the like, and stores various data used for navigation processing such as map data and facility data. Details of the map data will be described later.

[0025] The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and is distributed from a VICS (Vehicle Information Communication System) center via the communication interface 37. Receive road traffic information such as traffic jams and traffic information, and other information.

[0026] The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on a display screen such as a display. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and image information that can be displayed immediately, such as a VRAM (Video RAM). A display memory 43 that temporarily stores data, a display controller 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 are provided. . The display 44 is, for example, a liquid crystal display device having a diagonal angle of about 5 to 10 inches and is mounted near the front panel in the vehicle.

[0027] The audio output unit 50 is a digital to analog (DZA) of audio digital data sent via the bus line 30 from the CD-ROM drive 31 or DVD-ROM 32 or RAM 24 under the control of the system controller 20. A DZA converter 51 that performs conversion, an amplifier (AMP) 52 that amplifies the audio analog signal output from the Ό / 51 converter 51, and a speaker 53 that converts the amplified audio analog signal into audio and outputs it to the vehicle. With It is configured.

[0028] The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is arranged around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60. This touch panel functions as input means in the present invention.

[0029] (Map display device)

The map display device of the present invention is realized by executing a program stored in advance in the ROM 23 or the like of the CPU 22 of the navigation device 1. In the map display device of the present invention, the display 44 functions as a display means.

First, road map information will be described. Road map information consists of link information and node information. Link information is information on the road itself, and node information is information on intersections. That is, in the navigation apparatus 1, road map information is stored in the data storage unit 36 in the form of vector data in which nodes are intersections and links between the nodes are roads.

[0031] The link information includes a unique number for identifying the link, an identifier for identifying the type of road such as a highway and a general road, coordinates indicating the start and end of the link, the length of the link, and one-way traffic. It consists of information such as whether or not. Node information consists of information such as node-specific numbers, node coordinates, right / left turn prohibition at intersections, and presence / absence of traffic lights.

For example, when setting the route, the user sets the destination by operating the input device 60 and issues a route search instruction to the navigation device 1. The CPU 22 fetches necessary link and node information from the data storage unit 36 and performs route calculation. Then, the CPU 22 stores route information together with necessary map information in the buffer memory 42, and displays a map and a route to the destination on the display screen of the display 44.

[0033] The link information includes information on whether the road is one-way or not, and information on which direction the traveling direction is when the road is one-way. Yes. The navigation device 1 is based on information received from the VICS center. The information can be changed. For example, in the case where the navigation apparatus 1 temporarily becomes one-way due to one of the upper and lower lines being under construction on the road having the upper and lower lines, the road apparatus that received the VICS center force Based on the information indicating that the road is one-way, the link information can be changed to indicate that the road is one-way.

FIG. 2 (a) shows an example of road map information displayed on a display screen of a general map display device. In the display screen 70 shown in FIG. 2 (a), roads 71 and 72 and a one-way road 73 connecting the roads 71 and 72 are displayed. The sign 74 is a sign indicating one-way traffic. The direction in which the road 73 advances from the road 71 to the road 72 is the one-way traveling direction so that the arrow force drawn on the sign 74 is also divided. However, if the user displays map information for a place with many one-way roads, the sign 74 will be displayed as many as the one-way roads. It becomes difficult.

FIG. 2 (b) shows an example of road map information displayed on the display screen of the map display device of the present invention. The road map information displayed on the display screen 70a of the map display device of this embodiment differs from the road map information displayed on the display screen 70 of a general map display device in that it indicates a one-way street. Instead of being displayed, an arrow drawing 75 indicating the one-way travel direction is continuously superimposed on the entire one-way road. FIG. 3 shows an example of road map information displayed on the display screen when the present invention is applied to a navigation device. In the display screen 80 shown in FIG. 3, for a one-way road, an arrow drawing 75 is continuously superimposed on the one-way road, and for a non-one-way road, only a normal road is displayed. Is displayed.

[0036] As shown in Fig. 2 (b) and Fig. 3, in the map display device of the present invention, the user simply looks at the road itself displayed on the display screen and determines whether or not it is a one-way road. Or, if it is a one-way road, you can easily recognize which direction is the direction of travel.

[0037] (Map display processing)

Next, a map display processing method performed by the map display device of the present invention will be specifically described with reference to a flowchart. FIG. 4 is a flowchart showing the map display process. [0038] First, the CPU 22 determines whether or not the scale power of the map displayed on the display screen is below a predetermined scale (step S11). If it is determined that the scale is not below the predetermined scale (step Sl l: No), the process ends. This is because the map display device is often one-way when the scale of the displayed map is larger than a predetermined scale, and may not display a narrow street. In other words, the user knows which road is one-way, the case where it is, the case where it knows the route in detail, and the size of the scale of the map that is often displayed is This is because they are often relatively small. Note that a predetermined scale value as a reference is stored in a memory such as the ROM 23 in advance.

[0039] When the CPU 22 determines that the scale of the map displayed on the display screen is equal to or smaller than the predetermined scale (step S11: Yes), the link information of all roads displayed on the display screen is stored as data. Obtained from the storage unit 36 (step S12).

Next, the CPU 22 determines whether or not the predetermined road is a one-way road based on the displayed link information of the predetermined road (step S 13). If the CPU 22 determines that the predetermined road is not a one-way road (step S13: No), the process is terminated. Therefore, the CPU 22 functions as a one-way determining unit in the present invention.

[0041] If the CPU 22 determines that the predetermined road is a one-way road (step S13: Yes), the traveling direction of the predetermined road is determined based on the link information of the predetermined road. Information about whether this is to be obtained is acquired (step S14). As shown in Fig. 2 (b), the CPU 22 displays a drawing 75 of an arrow indicating the one-way travel direction on the entire predetermined road continuously superimposed on the acquired information. (Step S15), the process is terminated. Therefore, the CPU 22 also functions as a drawn object display means in the present invention. The CPU 22 performs the processing from step S13 to step S15 on all the roads displayed on the display screen.

[0042] As described above, the map display device of the present invention is based on display means for displaying map information on a display screen, and link information of a predetermined road displayed on the display screen! A one-way determining means for determining whether or not the predetermined road is one-way! /, And the predetermined road When it is determined that the road is one-way, there is provided a drawing display means for displaying a drawing indicating the traveling direction based on the link information so as to be superimposed on the entire predetermined road. As a result, the user can easily recognize a one-way road.

[0043] [Modification]

Next, a modification of the map display device of the present invention will be described. In the above-described embodiment, instead of or in addition to the force showing an example in which the present invention is applied to a complete one-way road, the upper and lower lines such as the two strips on the main national road are separated. The present invention can also be applied to roads that are present. In other words, an upward arrow road pointing object is continuously superimposed and displayed, and an downward arrow arrow pointing object is continuously superimposed on the downward road. To display. As a result, the user can easily recognize the traveling direction of the upper and lower lines even on a road where the upper and lower lines such as the two lines are separated.

[0044] Further, in the above-described embodiment, in FIG. 2 (b), the drawn object 75 of the arrow indicating the traveling direction of the one-way is displayed continuously superimposed on the entire one-way road. The drawing that is displayed superimposed on the entire one-way road is not limited to this. Instead, it is possible to use the drawing shown in Fig. 5 (a) and (b) below.

[0045] FIGS. 5 (a) and 5 (b) show modified examples of the drawn matter displayed superimposed on the entire predetermined road.

In the modification shown in FIG. 5 (a), the map display device periodically changes the color of the drawn object 75 of the arrow and shifts the timing of the color change of the drawn object 75 of the adjacent arrow from each other. ing. In FIG. 5 (a), the color of the drawn object 75 indicated by the solid line (hereinafter referred to as “color indicated by the solid line”) and the color of the drawn object 75 indicated by the broken line (hereinafter referred to as “the broken line”). Are referred to as “colors shown”). The drawn object 75 of the arrow periodically changes to the color indicated by the solid line and the color indicated by the broken line. The drawing objects 75 of the adjacent arrows are shifted in color change timing from each other. For example, if the drawn object 75 of the arrow at a predetermined position is displayed in a color indicated by a solid line at a predetermined time, an arrow at an adjacent position shifted in the direction of the arrow 82 from the predetermined position is displayed. Drawing 75 is displayed in the color indicated by the broken line Is done. Then, at the next moment, the drawn object of the arrow at the predetermined position is displayed in the color indicated by the broken line, and the arrow at the adjacent position shifted from the predetermined position in the direction of the arrow 82 is displayed. The drawing 75 is displayed in the color indicated by the solid line. In this way, as the time passes, the drawing object 75 of the arrow is displayed one after another in the color indicated by the solid line in the direction of the arrow 82, so that the movement flows in the one-way direction (the direction of the arrow 82). Can show.

[0047] In the modification shown in FIG. 5 (b), the map display device draws only a long arrow 83 indicating the traveling direction on the road over the entire predetermined road, and draws an arrow indicating the traveling direction. The amount of drawing can be reduced as compared with the case where the object 75 is continuously superimposed and displayed on the entire road.

[0048] Note that the map display device of the present invention is realized by starting the program of the present invention on a PDA (Personal Digital Assistants) or a personal computer on a desk instead of using only a car navigation device. It ’s okay, no, it ’s ugly! /.

Industrial applicability

[0049] The present invention can be used in a navigation apparatus for a moving body represented by a vehicle or the like.

Claims

The scope of the claims

[1] Display means for displaying map information on a display screen;

One-way determining means for determining whether or not the predetermined road is one-way based on link information of the predetermined road displayed on the display screen;

When it is determined that the predetermined road is one-way, a drawn object display means for displaying a drawn object indicating the traveling direction based on the link information superimposed on the entire predetermined road; A map display device comprising:

[2] The map according to claim 1, wherein the drawn matter display means continuously superimposes and displays a drawn matter of an arrow indicating the traveling direction on the entire predetermined road. Display device.

[3] a display process for displaying map information on a display screen;

A one-way determination step of determining whether or not the predetermined road is one-way based on link information of the predetermined road displayed on the display screen;

When it is determined that the predetermined road is one-way, a drawn object display step of superimposing and displaying a drawn object indicating the traveling direction based on the link information on the entire predetermined road; A map display method characterized by comprising:

[4] A map display program executed by a computer,

Display means for displaying map information on a display screen, displayed on the display screen !, and determining whether or not the predetermined road is one-way based on link information of the predetermined road When the determination means determines that the predetermined road is one-way, a drawing display means for displaying a drawing indicating the traveling direction based on the link information superimposed on the entire predetermined road A map display program for causing the computer to function as:

[5] A recording medium in which the map display program according to claim 4 is recorded.