JP6417987B2 - Map display system, map display program, and map display method - Google Patents

Description

  The present invention relates to a technique for displaying at least a map image as a display image on a display input device that displays an image on a display screen and receives an instruction input for the content of the display image displayed on the display screen.

  For example, some map display systems in navigation systems allow the user to set the content displayed on the display screen of the display device. For example, there are cases where additional information such as facility information such as illustrations and names of facilities existing within the display range of the map and traffic information indicating traffic congestion on the road is superimposed on the display screen together with the map. However, depending on the user, such additional information may be unnecessary. Therefore, there is a configuration in which a user can set display contents. #A in FIG. 9 illustrates a display screen in which facility information and traffic information are superimposed on map information as additional information. The mark “P” indicates the parking lot, and the mark “knife and fork” indicates the facility information of the restaurant. Further, hatching on the road indicates traffic information indicating that the road is congested.

  Here, when the user sets the facility information to non-display, a function setting screen as shown in #B and #C of FIG. 9 is displayed, and display / non-display is switched on the function setting screen. When the setting is confirmed on the function setting screen, the display form is changed as shown by #D in FIG. The display / non-display of the traffic information can be similarly switched. For example, an instruction manual (Non-Patent Document 1) of a navigation system showing the source below describes a method for setting a display form of facility information and traffic information. However, in many cases, such a function setting screen is composed of character information as illustrated in FIG. For this reason, the specific display form of the display screen after setting cannot be confirmed until the function setting screen is terminated and the normal map screen is displayed. If the display form after the setting is different from the user's feeling, it is necessary to return to the function setting screen and reset it, and it may take time to complete the display form desired by the user.

“Memory Navi Multi-AV Station Navigation & Audio Book”, pp. 104-108 and 179-182, [online], March 20, 2014, Toyota Motor Corporation, [Search January 21, 2015], Internet <http://toyota.jp/manual/navi/nscp-w61.pdf>

  In view of the above background, when it is possible to display additional information together with a map, it is desired to appropriately and efficiently set a user's desired display form.

The map display system considered in the above is comprised as follows as one suitable aspect. A map display system that displays an image on a display screen and displays at least a map image as the display image on a display input device that receives an instruction input for the content of the display image displayed on the display screen,
A display image generation unit for generating the display image;
An operation input receiving unit that receives the instruction input to the display input device,
The display image generation unit superimposes a base map layer in which a base map image including at least road network information is arranged on an additional image layer in which an additional information image added on the base map image is arranged. A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
The display image generation unit is a layer selection image that is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing the plurality of additional image layers are displayed side by side. Generating the display setting image including:
Whether the operation input reception unit displays, on the map image, the additional information image of a type corresponding to each additional image layer icon based on a user's selection operation on each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
The display image generation unit generates the map image by superimposing the base map layer and the additional image layer designated to be displayed by the necessity instruction.

  By displaying an image (layer selection image) in which layer icons schematically showing the base map layer and the additional image layer are displayed, the structure of the map image can be clearly shown to the user. The user can easily identify the additional image layer corresponding to the additional information image that needs to be displayed. Further, it is possible to instruct whether or not to display the additional information image on the map image based on a selection operation by the user with respect to the additional image layer icon. That is, the user can easily identify the additional image layer and easily select the additional image layer. As described above, according to this configuration, when the additional information can be displayed together with the map, it is possible to appropriately and efficiently set the display form desired by the user.

  Various technical features of the map display system can be applied to a map display program and a map display method. For example, as one aspect, the map display program causes a computer to execute various functions having the features of the map display system described above. As a matter of course, such a map display program can also provide the effects of the map display system described above. The same applies to the map display method.

As one aspect, a map display program that displays an image on a display screen and displays at least a map image as the display image on a display input device that receives an instruction input for the content of the display image displayed on the display screen,
A display image generation function in which a display image generation unit generates the display image;
An operation input accepting function for accepting the instruction input to the display input device by an operation input accepting unit;
Is realized on a computer,
In the display image generation function, the base map layer in which a base map image including at least road network information is arranged and the additional image layer in which an additional information image to be added on the base map image is overlaid, A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
In the display image generation function, a layer selection image which is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing each of the plurality of additional image layers are arranged side by side Generating the display setting image including:
Whether the operation input reception function displays the additional information image of a type corresponding to each additional image layer icon on the map image based on a user's selection operation on each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
In the display image generation function, the map image is generated by superimposing the base map layer and the additional image layer designated to be displayed by the necessity instruction.

Further, as one aspect, a map display method for displaying at least a map image as the display image on a display input device that displays an image on a display screen and receives an instruction input for the content of the display image displayed on the display screen is provided. ,
A display image generation step in which a display image generation unit generates the display image; and
An operation input receiving unit that receives an instruction input to the display input device;
In the display image generating step, the base map layer in which the base map image including at least road network information is arranged and the additional image layer in which the additional information image to be added on the base map image is overlaid are overlapped with each other. A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
In the display image generation step, a layer selection image is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing each of the plurality of additional image layers are arranged side by side Generating the display setting image including:
In the operation input receiving step, whether the additional information image of a type corresponding to each additional image layer icon is displayed on the map image based on a user's selection operation to each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
In the display image generation step, the map image is generated by superimposing the base map layer and the additional image layer designated to be displayed by the necessity instruction.

  Further features and advantages of the present invention will become apparent from the following description of embodiments of the invention which will be described with reference to the drawings.

Block diagram schematically showing the system configuration of the navigation system Explanatory drawing showing an example of the layer structure of the database Explanatory drawing which shows an example of the layer structure of a map image Explanatory drawing which shows an example of the procedure which selects the additional information image displayed on a map image The flowchart which shows an example of the setting procedure of the display form of an additional image layer icon, and the display form of an additional image layer Explanatory drawing which shows the other example of the setting screen which selects an additional information image Explanatory drawing which shows the other example of the setting screen which selects an additional information image Explanatory drawing which shows the other example of the layer structure of a map image Explanatory drawing which shows an example of the procedure which selects the conventional additional information image

  Hereinafter, an embodiment in which the map display system of the present invention is applied to a vehicle navigation system will be described as an example. However, this navigation system is not limited to a so-called in-vehicle navigation system that is fixedly mounted on the vehicle, and may be a portable navigation system that can be arbitrarily moved. Further, it may be a navigation system installed as an application in a portable device such as a mobile phone, a digital camera, or a PDA (Personal Digital (Data) Assistant).

  FIG. 1 is a block diagram schematically showing the system configuration of the navigation system 10 (map display system). In the present embodiment, the navigation system 10 is configured with an arithmetic processing unit 1 having an arithmetic processing device such as a microcomputer or DSP (Digital Signal Processor) as a core member. The arithmetic processing unit 1 cooperates with hardware such as an arithmetic processing device such as a microcomputer, a storage medium such as a memory and a disk device, peripheral circuits, and software such as programs and parameters used on the hardware. Thus, various functions as the navigation system 10 are realized. Note that FIG. 1 does not illustrate all storage media and peripheral circuits constituting the navigation system 10.

  In the arithmetic processing unit 1, functional units such as a location arithmetic unit 2, a navigation arithmetic unit 3, a graphic controller 4, and an operation input receiving unit 7 are constructed by cooperation of hardware and software. The location calculation unit 2 is a functional unit that specifies its own position indicating the current position of the navigation system 10. Although details will be described later, the location calculation unit 2 is configured to acquire the own position information from the camera 11, the GPS receiver 12, the direction sensor 13, and the speed sensor 14, and the own position information based on the own position information. The self-location specifying process for specifying is executed. The navigation calculation unit 3 performs a map information acquisition process for acquiring at least map information around the own position from the map database (map DB) 8 and a route guidance process to the destination when the destination is set. It is a functional part to be executed.

  The graphic controller 4 cooperates with the navigation calculation unit 3 to generate a map image based on the own position information and the map information, and display the map image on the display input device 20. The graphic controller 4 outputs image data (for example, a map image) according to the specifications of the display input device 20. As shown in FIG. 1, in the present embodiment, the graphic controller 4 includes a display image generation unit 5 and a display control unit 6. The display image generation unit 5 is a functional unit that generates a display image to be displayed on the display unit 21 (display screen) of the display input device 20. The display control unit 6 outputs image data (display image) according to the specifications of the display input device 20 and causes the display unit 21 of the display input device 20 to display the display image.

  The display input device 20 has a touch panel, for example. This touch panel functions as the display unit 21 (display screen) and also functions as the operation input unit 22 operated by the user. For example, on the touch panel (the display unit 21 and the operation input unit 22), buttons (icons) that can be operated by the user are arranged at predetermined coordinates as images. When the user performs an input operation on the image (button, icon, etc.), an instruction (command) corresponding to the image (button, icon, etc.) is received by the operation input receiving unit 7. The instruction is transmitted from the operation input receiving unit 7 to the navigation calculation unit 3 and the graphic controller 4 and processing corresponding to the instruction is executed. In the present embodiment, a touch sensor that constitutes a touch panel is illustrated as the operation input unit 22, but a remote controller receiving device using infrared rays, radio waves, or the like may be used as the operation input unit 22.

  The location calculation unit 2 calculates and acquires its own position by using surveying by GPS (Global Positioning System) and autonomous control by dead reckoning. GPS surveying is performed using the GPS receiver 12. Autonomous control is performed based on the traveling direction detected by the direction sensor 13, the traveling speed detected by the speed sensor 14 (distance sensor), and the traveling distance (obtained by multiplying the speed and time). Further, the location calculation unit 2 can improve the accuracy of its own position by recognizing road markings drawn on the road surface and features such as three-dimensional objects such as buildings and signs from images captured by the camera 11.

  The “own position” is a position that is defined in the navigation system 10 and can be recognized by a user who receives guidance from the navigation system 10 and the guidance result can be suitably used. For example, when the navigation system 10 is a vehicle-mounted navigation system fixedly mounted on a vehicle and the user is a passenger of the vehicle, the “own position” is the position of the navigation system 10 and the vehicle It is the position, the position of the user. When the navigation system 10 is a portable navigation system, the “own position” is at least the position of the navigation system 10 and the position of the user who carries the portable navigation system. When the portable navigation system is brought into the vehicle, the position of the vehicle is naturally included in the “own position”. The “local position” of the navigation system installed as an application in portable devices such as mobile phones, digital cameras, and PDAs is the same as that of the portable navigation system.

  The map database 8 included in the navigation system 10 is realized by an optical disk device, a magnetic disk device, an SSD (Solid State Drive), or the like. Although FIG. 1 illustrates an example in which the map database 8 is installed at the location of the navigation system 10, the map database 8 may be installed in a remote place such as an information center. In this case, the navigation system 10 (the navigation calculation unit 3 or the like) acquires map information through communication or the like. In the present embodiment, the map database 8 is constructed with a layer structure as shown in FIG. In the present embodiment, an example in which the road network layer M1 and the road shape layer M2 are stored in the map database 8 is shown.

  The road network layer M1 is a layer indicating connection information between roads. Specifically, it has information on a large number of nodes N having position information on a map expressed by latitude and longitude, and information on a large number of links K that connect the two nodes N to form a road. It is configured. Each link K has information such as the type of road (type of highway, toll road, national road, prefectural road, etc.) and link length as the link information. The road shape layer M2 is a layer that is stored in association with the road network layer M1 and indicates the shape of the road. Specifically, information on a number of road shape complementary points S, road width information, and the like, which are arranged between two nodes N (on the link K) and have position information on a map expressed in latitude and longitude. It is configured. Map information is composed of information stored in the road network layer M1 and the road shape layer M2.

  In addition to road network information and road shape information, the map database 8 also stores facility information that is information on a plurality of facilities. The facilities are, for example, restaurants, parking lots, gas stations, convenience stores, hospitals, and the like. Such facility information is additional information added to the map information. The additional information stored in the map database 8 includes, for example, feature information in addition to the facility information. The feature information is information on various features provided on or around the road, and the feature includes road markings provided on the road surface. Examples of such features related to road markings include pedestrian crossings, stop lines, traffic direction markings that specify the traveling direction of each lane (straight arrows, right-turn arrows, etc.), intersection shape markings (cross marks, T mark, etc.), lane markings dividing the lane along the road (solid line, broken line, double line, etc.), various display marks such as speed display, zebra zone and the like are included. In addition to such road markings, the features in which the feature information is stored can include various features such as traffic lights, signs, overpasses, and tunnels.

  The navigation system 10 can also guide a user by superimposing road markings and road signs as image information on a map image at an intersection, for example. The feature information includes at least position information about a position where the feature exists. As described above, the location calculation unit 2 improves the accuracy of its own position by recognizing road markings drawn on the road surface and features such as solid objects such as buildings and signs from images captured by the camera 11. You can also.

  The additional information can include information such as facility information and feature information stored in advance in the map database 8 as well as information on road conditions that change sequentially, weather information, and the like. For example, traffic information such as road congestion information and traffic regulation information provided from a road information system such as VICS (Vehicle Information and Communication System) (registered trademark) can be used as additional information. The navigation system 10 acquires traffic information transmitted by radio wave beacons, optical beacons, FM multiplex broadcasting, and the like via these receivers.

  These additional information is superimposed on a map image showing map information as an additional information image and displayed on the display unit 21 of the display input device 20. More specifically, layers on which images representing map information and additional information are arranged are overlapped to form a map image displayed on the display unit 21. FIG. 3 shows an example in which a map image is generated by overlaying layers. 3 is a base map layer in which a base map image G0 including at least road network information is arranged. Reference symbol L is an additional image layer in which additional information images (G1, G2) to be added on the base map image are arranged. Here, as the additional image layer L, two types of layers of a first additional image layer L1 and a second additional image layer L2 are illustrated.

  The first additional image layer L1 is an additional image layer L having, as an additional information image, a facility information image G1 indicating facility information that is information of each of a plurality of facilities. Here, the mark “P” is a parking lot, and the mark “knife and fork” is a facility information image G1 indicating a restaurant. The second additional image layer L2 is an additional image layer L having a traffic information image G2 indicating traffic information of a plurality of points as an additional information image. Here, the hatching on the road is a traffic information image G2 indicating that the road is congested. As described above, the additional information images (G1, G2) are classified into a plurality of types, and are distributed to a plurality of additional image layers (L1, L2) that are different for each type. As shown in FIG. 3, the display image generation unit 5 includes a base map layer M in which the base map image G0 is arranged, and an additional image layer L (L1, L2) in which the additional information images (G1, G2) are arranged. To generate a map image IM. In addition, code | symbol GM shown in FIG. 3 etc. is an icon which shows the own vehicle (own position).

  Incidentally, the additional information images (G1, G2) may not be displayed depending on the user. Therefore, the user can select whether or not to add the additional information image to the map image IM as necessary. FIG. 4 shows an example of a procedure in which the user selects the additional information image (G1, G2) and sets the display content of the map image IM. The display image generating unit 5 generates a map image IM by superimposing the base map layer M and the additional image layer L, and generates a display setting image IE that is an image of a setting screen for setting display contents of the map image. . # 10 and # 40 in FIG. 4 indicate the map image IM displayed on the display unit 21, and # 20 and # 30 in FIG. 4 indicate the display setting image IE.

  As shown in # 10 of FIG. 4, the map image IM includes a button icon B that is a transition button to a screen for displaying the display setting image IE. The user operation on the button icon B is detected by the operation input unit 22, and the operation input receiving unit 7 receives an instruction input corresponding to the button icon B. Here, the instruction input corresponding to the button icon B is a transition to the display setting screen. The instruction input received by the operation input receiving unit 7 is transmitted to the graphic controller 4 and the display content of the display unit 21 of the display input device 20 is switched. Specifically, the display image generation unit 5 generates the display setting image IE, and the display control unit 6 causes the display unit 21 to display the display setting image IE as a display image instead of the map image IM (# 20). .

  4 shows an example of the display setting image IE. The display image generation unit 5 generates a display setting image IE including the layer selection image IS. The layer selection image IS is an image that represents the map layer icon MI and a plurality of additional image layer icons LI (LI1, LI2) side by side. The map layer icon MI is an icon that schematically shows the base map layer M. In addition, the plurality of additional image layer icons LI (LI1, LI2) are icons schematically showing each of the plurality of additional image layer L (L1, L2). In the example shown in FIG. 4, the first additional image layer icon LI1 schematically shows the first additional image layer L1, and the second additional image layer icon LI2 schematically shows the second additional image layer L2. Yes.

  Incidentally, the additional image layer icon LI has a function of receiving a selection operation from the user. Since the map layer icon MI cannot set whether or not to display, the map layer icon MI does not have a function of receiving a selection operation from the user. Whether or not to display the additional information image of the type corresponding to each additional image layer icon LI on the map image IM based on the user's selection operation on each of the plurality of additional image layer icons LI. Is received. That is, whether or not to display the additional information image (facility information image G1) corresponding to the first additional image layer L1 on the map image IM based on the user's selection operation on the first additional image layer icon LI1. Accept instructions. Further, whether or not to display the additional information image (traffic information image G2) corresponding to the second additional image layer L2 on the map image IM based on the user's selection operation on the second additional image layer icon LI2 is determined. Accept instructions.

  The additional image layer icon LI functions as an alternate switch that alternately switches whether or not to display the additional information image corresponding to the additional image layer icon LI on the map image IM by a selection operation from the user. That is, when the additional information image corresponding to the additional image layer icon LI is set to be displayed on the map image IM in the display setting image IE, the additional image layer is displayed by an operation on the additional image layer icon LI. The additional information image corresponding to the icon LI is changed to a setting that is not displayed on the map image IM. Conversely, in the display setting image IE, when the additional information image corresponding to the additional image layer icon LI is set not to be displayed on the map image IM, the additional image layer icon LI is operated to operate the additional image layer icon LI. The additional information image corresponding to the icon LI is changed to the setting displayed on the map image IM.

  The display image generation unit 5 assigns each of the plurality of additional image layers L so that the additional image layer L that is designated as needing display can be distinguished from the additional image layer L that is designated as not necessary. The layer selection image IS is generated by changing the display form of the corresponding additional image layer icon LI. Therefore, the user can easily determine whether the additional information image corresponding to which additional image layer L is superimposed on the map image IM by viewing the layer selection image IS displayed on the display unit 21 of the display input device 20. Can be recognized.

  4 shows an example in which an operation instruction is given to the first additional image layer icon LI1. With this operation instruction, the setting for displaying the additional information image corresponding to the first additional image layer icon LI1 on the map image IM is changed. In the present embodiment, the setting of the first additional image layer L1 is changed from necessary to unnecessary display on the map image IM. At this time, as shown in # 30 of FIG. 4, the display form of the first additional image layer icon LI1 is changed. In this embodiment, when it is designated that display is unnecessary, the display form is changed so as to reduce the visibility of the additional image layer icon LI. In FIG. 4, # 30 shows an example in which the contrast of the first additional image layer icon LI1 is lowered and so-called grayed out.

  The flowchart of FIG. 5 schematically illustrates an example of processing for changing the display form of the additional image layer icon LI and changing the necessity setting for display of the additional image layer L by an operation on such an additional image layer icon LI. Show. First, it is determined whether or not an operation has been performed on the own layer icon (additional image layer icon LI) (# 1). If there is no operation, the display form of the additional image layer icon LI and the display necessity setting of the additional image layer L are not changed, and the process is terminated as it is.

  If there is an operation on the own layer icon, the process proceeds to step # 2, whether or not the display setting is ON, that is, whether or not the display necessity setting of the additional image layer L is “necessary”. Determined. When the display setting is ON, the necessity setting is switched by operating the self-layer icon, so the icon non-display setting for reducing the visibility of the additional image layer icon LI is changed to ON ( # 3). Further, the display setting of the additional image layer L corresponding to the additional image layer icon LI is changed to OFF (# 5). Step # 3 and step # 5 may be executed in the reverse order.

  On the other hand, if the display setting is OFF in step # 2, the icon non-display setting for reducing the visibility of the additional image layer icon LI is changed to OFF (# 4). Further, the display setting of the additional image layer L corresponding to the additional image layer icon LI is changed to ON (# 6). Step # 4 and step # 6 may be executed in the reverse order.

  As shown in # 20 and # 30 of FIG. 4, the display setting image IE includes a button icon B for confirming the setting displayed in the display setting image IE and making a transition (return) to the map image IM. It is. When the button icon B is operated, the setting is confirmed, and the map image IM on which the additional image layer L is overlaid according to the setting is displayed on the display unit 21 as a display image (# 40). As apparent from a comparison between # 10 and # 40 in FIG. 4, the first additional image layer L1 indicating the facility information is excluded by changing the display setting.

  As described above, at least the map image IM is displayed as a display image in the display input device 20 that displays an image on the display unit 21 (display screen) and receives an instruction input for the content of the display image displayed on the display unit 21. The map display system to be displayed is configured as a part of the navigation system 10. In the map display system, the map display system is constructed with the arithmetic processing unit 1, particularly the graphic controller 4 and the operation input receiving unit 7 as the core. The arithmetic processing unit 1 is constituted by a microcomputer and a DSP, and realizes various functions by cooperation of hardware and software. The map display program as software causes a computer (microcomputer or DSP) constituting the arithmetic processing unit 1 to realize the function.

  The map display system includes a display image generation unit 5 that generates a display image, and an operation input reception unit 7 that receives an instruction input to the display input device 20. The map display program realizes a display image generation function that generates a display image and an operation input reception function that receives an instruction input to the display input device 20, for example, in a computer that configures the arithmetic processing unit 1. The map display method includes a display image generation step in which the display image generation unit 5 generates a display image, and an operation input reception step in which the operation input reception unit 7 receives an instruction input to the display input device 20.

  In the map display system, the display image generation unit 5 includes a base map layer M in which a base map image G0 including at least road network information is arranged, and additional information images (G1, G2) added on the base map image G0. The map image IM is generated by superimposing the image on the additional image layer L on which is placed, and a display setting image IE that is an image of a setting screen for setting the display content of the map image IM is generated. In the display image generation function realized by the map display program in the computer (for example, the arithmetic processing unit 1), the base map layer M and the additional image layer L are similarly generated to generate the map image IM, and the display setting image IE is displayed. Generate. Similarly in the map display method, in the display image generation step, the display image generation unit 5 generates the map image IM by superimposing the base map layer M and the additional image layer L, and also generates the display setting image IE. To do.

  As described above, the additional information images (G1, G2) are classified into a plurality of types, and are distributed to a plurality of additional image layers L (L1, L2) that are different for each type. In the map display system, the display image generation unit 5 includes a map layer icon MI that schematically shows the base map layer M and a plurality of additional image layers that schematically show each of the plurality of additional image layers L (L1, L2). A display setting image IE including a layer selection image IS, which is an image representing icons LI (LI1, LI2) side by side, is generated. Similarly, in the display image generation function realized by the map display program on the computer (for example, the arithmetic processing unit 1), similarly, a layer selection that is an image in which the map layer icon MI and a plurality of additional image layer icons LI (LI1, LI2) are displayed side by side. A display setting image IE including the image IS is generated. Similarly, in the map display method, in the display image generation step, the display image generation unit 5 displays the layer selection image IS that is an image in which the map layer icon MI and the plurality of additional image layer icons LI (LI1, LI2) are displayed side by side. The display setting image IE including is generated.

  In the map display system, the operation input receiving unit 7 selects each additional image layer icon LI (LI1, LI2) based on the user's selection operation on each of the plurality of additional image layer icons LI (LI1, LI2). The additional information image (G1, G2) of the type corresponding to is received as to whether or not to display on the map image IM. Similarly, in the operation input reception function realized by the map display program in the computer (for example, the arithmetic processing unit 1), the necessity is determined based on the user's selection operation to each of the plurality of additional image layer icons LI (LI1, LI2). Accept instructions. Similarly, in the map display method, in the operation input reception step, the operation input reception unit 7 receives a necessity instruction based on a user's selection operation on each of the plurality of additional image layer icons LI (LI1, LI2). .

  Then, in the map display system, the display image generation unit 5 superimposes the base map layer M and the additional image layers L (L1, L2) that are specified to be displayed by the necessity instruction to generate the map image IM. Generate. In the display image generation function realized by the map display program on the computer (for example, the arithmetic processing unit 1), the base map layer M and the additional image layers L (L1, L2) designated to be displayed by the necessity instruction are overlapped. In addition, a map image IM is generated. In the map display method, in the display image generation step, the display image generation unit 5 superimposes the base map layer M and the additional image layers L (L1, L2) designated to be displayed by the necessity instruction. The map image IM is generated.

  By the way, the display setting image IE is not limited to the form exemplified in # 20 and # 30 of FIG. As shown in FIG. 6 and FIG. 7, the display setting image IE is added to the additional information image (G1, G1) of the additional image layer L designated to be displayed in response to the necessity instruction received by the operation input receiving unit 7. The base map image G0 on which G2) is superimposed and the layer selection image IS may be arranged side by side. That is, it is preferable that not only the layer selection image IS but also a schematic map image IM corresponding to the selection state of the additional image layer L is displayed simultaneously as the display setting image IE. In this case, the display image generation unit 5 adds the additional information image (G1, G1) of the additional image layer L that is designated to be displayed according to the layer selection image IS and the necessity instruction received by the operation input reception unit 7. The display setting image IE is generated by arranging the base map image G0 on which G2) is superimposed.

  The user can confirm what kind of map image IM is to be obtained by selecting the additional image layer L when selecting the additional image layer L. FIG. 6 corresponds to # 20 of FIG. 4 and shows an example in which an operation instruction is given to the first additional image layer icon LI1. FIG. 6 shows an example in which the display setting image IE includes a base map image G0 on which the additional information images (G1, G2) are superimposed in addition to the layer selection image IS. As described above, an operation instruction for the first additional image layer icon LI1 changes the setting from the necessity to the unnecessary display of the first additional image layer L1 on the map image IM. At this time, as shown in FIG. 7 corresponding to # 30 in FIG. 4, the display form of the first additional image layer icon LI1 is changed. In FIG. 7, the display form of the first additional image layer icon LI1 is changed, and the display form of the base map image G0 on which the additional information images (G1, G2) are superimposed is also changed. The base map image G0 included in the display setting image IE is obtained by superimposing the additional information images (G1, G2) of the additional image layer L designated to be displayed. Accordingly, as the display setting of the first additional image layer L1 is changed to OFF, the facility information image G1 is not superimposed.

  In the form described with reference to FIG. 4, if the map image is not displayed by operating the “confirm” button icon B on the setting screen of # 30, the base map on which the additional information images (G1, G2) are superimposed. The image G0 cannot be confirmed. Therefore, when the display form is different from the user's request, it is necessary to return to the setting screen and perform setting again. However, in the embodiment described with reference to FIGS. 6 and 7, the base map image G0 on which the additional information images (G1, G2) are superimposed is confirmed before the “confirm” button icon B is operated on the setting screen. can do. Therefore, even when the display form is different from the user's request, the setting can be quickly performed again.

[Other Embodiments]
Hereinafter, other embodiments of the present invention will be described. Note that the configuration of each embodiment described below is not limited to being applied independently, and can be applied in combination with the configuration of other embodiments as long as no contradiction arises.

(1) In the embodiment described above with reference to FIGS. 4, 6, 7, etc., the map layer icon MI corresponds to the display content of the base map image G0 in the map image IM when the display setting image IE is generated. It was a design (design). Further, the additional image layer icon LI is a design corresponding to the display content of the additional information image (G1, G2) in the map image IM when the display setting image IE is generated. For example, when the user tries to adjust the display contents with annoyance in the additional information images (G1, G2) superimposed on the map image IM, the layer icons (MI, LI) are displayed on the map. In the case of a design corresponding to the image IM, it is easy to make a selection for necessity determination or necessity indication. However, the design of each layer icon (MI, LI) may not correspond to the display content of the base map image G0.

  For example, the map layer icon MI may be a predefined design (regulated design) regardless of the display content of the base map image G0 in the map image IM when the display setting image IE is generated. Further, the additional image layer icon LI may also be a predetermined pattern (specified pattern) regardless of the display content of the additional information image (G1, G2) in the map image IM when the display setting image IE is generated. Good. Naturally, one of the map layer icon MI and the additional image layer icon LI is a design corresponding to the display content of the base map image G0, and the other is a design that does not correspond to the display content of the base map image G0 ( It may be a prescribed design). Depending on the target area of the map image IM, the additional information image (G1, G2) may not exist. In this case, the additional image layer icon LI cannot be generated with a design corresponding to the map image IM. Regardless of the map image IM, when the additional image layer icon LI is generated with the prescribed design, it is possible to generate the display setting image IE that is stable and has good visibility. In addition, it is not necessary to generate the additional image layer icon LI every time the display setting image IE is generated according to the map image IM, so that the processing load can be reduced.

(2) In the above description, as the additional image layer L, the first additional image layer L1 having the facility information image G1 as the additional information image, the second additional image layer L2 having the traffic information image G2 as the additional information image, Was illustrated. Further, as described above, an image of feature information (a road marking such as a pedestrian crossing or a stop line, a traffic light, a sign, or the like) can be used as the additional information image. FIG. 8 illustrates a third additional image layer L3 having, as an additional information image, a feature information image G3 indicating a traffic light or a one-way sign, for example. As is clear from this example, it is also possible to provide an additional image layer L having the feature information image G3 and other images as additional information images in addition to the facility information image G1 and the traffic information image G2. Whether or not to superimpose the additional image layer L on the base map layer M can also be selected.

[Outline of Embodiment of the Present Invention]
The outline of the map display system in the embodiment of the present invention described above will be briefly described below.

The map display system has one preferred aspect as follows:
At least a map image (IM) is displayed as the display image on the display input device (20) which displays an image on the display screen (21) and receives an instruction input for the content of the display image displayed on the display screen (21). A map display system (10)
A display image generation unit (5) for generating the display image;
An operation input receiving unit (7) for receiving the instruction input to the display input device (20);
With
The display image generation unit (5) includes a base map layer (M) in which a base map image (G0) including at least road network information is arranged, and an additional information image (G0) added on the base map image (G0). G1, G2) are superimposed on the additional image layer (L) on which the map image (IM) is generated to generate the map image (IM), and the display setting is an image of a setting screen for setting display contents of the map image (IM) Generate an image (IE),
The additional information images (G1, G2) are classified into a plurality of types, and are distributed to a plurality of the additional image layers (L (L1, L2)) different for each type,
The display image generation unit (5) schematically represents each of the map layer icon (MI) schematically showing the base map layer (M) and the plurality of additional image layers (L (L1, L2)). Generating the display setting image (IE) including a layer selection image (IS) which is an image representing a plurality of additional image layer icons (LI (LI1, LI2)) to be displayed side by side;
The operation input receiving unit (7) is configured to select each of the additional image layer icons (LI (LI1, LI2) based on a user's selection operation on each of the plurality of additional image layer icons (LI (LI1, LI2)). )) Accepting an instruction as to whether or not to display the additional information image (G1, G2) of the type corresponding to the map image (IM);
The display image generation unit (5) superimposes the base map layer (M) and the additional image layer (L (L1, L2)) designated to be displayed by the necessity instruction, A map image (IM) is generated.

  An image (layer selection image (IS)) in which layer icons (MI, LI (LI1, LI2)) schematically showing the base map layer (M) and the additional image layer (L (L1, L2)) are arranged is displayed. Thus, the structure of the map image (IM) can be clearly shown to the user. The user can easily identify the additional image layer (L (L1, L2)) corresponding to the additional information image (G1, G2) that needs to be displayed. Further, it is possible to instruct whether or not to display the additional information image (G1, G2) on the map image (IM) based on a selection operation by the user with respect to the additional image layer icon (LI (LI1, LI2)). is there. That is, the user can easily identify the additional image layer (L (L1, L2)) and easily select the additional image layer (L (L1, L2)). As described above, according to this configuration, when the additional information can be displayed together with the map, it is possible to appropriately and efficiently set the display form desired by the user.

  Here, the display image generation unit (5) can distinguish between the additional image layer (L) that is designated as requiring display and the additional image layer (L) that is designated as not requiring display. As described above, it is preferable to generate the layer selection image (IS) by changing the display form of the additional image layer icon (LI) corresponding to each of the plurality of additional image layers (L). Since the display form of the additional image layer icon (LI) differs depending on whether or not display is necessary, the user can easily identify the state in which the necessity of display is specified.

  Here, the map layer icon (MI) is a design corresponding to the display content of the base map image (G0) in the map image (IM) when the display setting image (IE) is generated. The image layer icon (LI) is preferably a design corresponding to the display content of the additional information image (G1, G2) in the map image (IM) when the display setting image (IE) is generated. For example, the user may be annoyed with the additional information images (G1, G2) superimposed on the map image (IM) and try to adjust the display content. In this case, when the map layer icon (MI) and the additional image layer icon (LI) are generated with the design corresponding to the map image (IM) when the display setting image (IE) is generated, the user can add the additional image. It is possible to easily determine whether or not the layer (L) is necessary and to make a selection for the necessity instruction.

  As another aspect, the map layer icon (MI) is preliminarily set regardless of the display content of the base map image (G0) in the map image (IM) when the display setting image (IE) is generated. The additional image layer icon (LI) is related to the display content of the additional information image (G1, G2) in the map image (IM) when the display setting image (IE) is generated. Instead, it may be a predefined design. Depending on the area that is the target of the map image (IM), the additional information image (G1, G2) may not exist. In this case, the additional image layer icon (LI) cannot be generated with a design corresponding to the map image (IM). Regardless of the map image (IM), when the additional image layer icon (LI) is generated with a predetermined design, it is possible to generate a display setting image (IE) that is stable and has good visibility. Further, it is not necessary to change the design of the additional image layer icon (LI) every time the display setting image (IE) is generated according to the map image (IM), so that the processing load can be reduced.

  Further, as one aspect, the display image generation unit (5) specifies that display is necessary according to the layer selection image (IS) and the necessity instruction received by the operation input reception unit (7). It is preferable to generate the display setting image (IE) by arranging the base map image (G0) on which the additional information images (G1, G2) of the additional image layer (L) being superimposed are superimposed. The user can confirm on the display setting image (IE) what kind of map image (IM) will be obtained by selecting the additional image layer (L) when selecting the additional image layer (L). .

  Here, the additional image layer (L) includes at least a first additional image layer (L1) having a facility information image (G1) indicating facility information as information of each of a plurality of facilities as the additional information image, It is preferable to include a second additional image layer (L2) having a traffic information image (G2) indicating traffic information of a plurality of points as the additional information image. The facility information and traffic information are highly convenient information, and are useful when displayed together with the base map image (G0). However, when such information is not required, the visibility of the base map image (G0) may be reduced. Therefore, if an image corresponding to these pieces of information is arranged in the additional image layer (L) and can be selected, it is preferable that information can be appropriately used as necessary.

  The various technical features of the map display system described above can also be applied to a map display program and a map display method. For example, as one aspect, the map display program causes a computer to execute various functions having the features of the map display system described above. The typical aspect is illustrated below. As a matter of course, such a map display program can also provide the effects of the map display system described above. Furthermore, various additional features exemplified as a preferred embodiment of the map display system can be incorporated into this map display program, and the program can also exhibit the effects corresponding to the respective additional features. The same applies to the map display method.

As one aspect, at least a map image is displayed as the display image on the display input device (20) that displays an image on the display screen (21) and receives an instruction input for the content of the display image displayed on the display screen (21). The map display program that displays (IM)
A display image generation unit (5) for generating the display image;
An operation input receiving unit (7) for receiving the instruction input to the display input device (20);
Is realized on a computer,
In the display image generation function, a base map layer (M) in which a base map image (G0) including at least road network information is arranged, and additional information images (G1, G2) added on the base map image (G0) ) Is superimposed on the additional image layer (L) in which the map image (IM) is arranged to generate the map image (IM), and the display setting image (IE) which is an image of a setting screen for setting the display content of the map image (IM) )
The additional information images (G1, G2) are classified into a plurality of types and distributed to a plurality of different additional image layers (L (L1, L2)) for each type,
In the display image generation function, a map layer icon (MI) schematically showing the base map layer (M) and a plurality of additional image layers (L (L1, L2)) are schematically shown. Generating the display setting image (IE) including a layer selection image (IS) that is an image representing the additional image layer icon (LI (LI1, LI2)) side by side;
In the operation input reception function, each additional image layer icon (LI (LI1, LI2)) is selected based on a user's selection operation on each of the plurality of additional image layer icons (LI (LI1, LI2)). Accepting an instruction as to whether or not to display the additional information image (G1, G2) of the corresponding type on the map image (IM);
In the display image generation function, the base map layer (M) and the additional image layer (L (L1, L2)) designated to be displayed by the necessity instruction are overlaid, and the map image ( IM).

Further, as one aspect, the display input device (20) that displays an image on the table display screen (21) and receives an instruction input with respect to the content of the display image displayed on the display screen (21) is used as the display image. A map display method for displaying at least a map image (IM) is as follows:
A display image generation step in which the display image generation unit (5) generates the display image;
An operation input receiving step (7) for receiving the instruction input to the display input device (20),
In the display image generation step, a base map layer (M) on which a base map image (G0) including at least road network information is arranged, and additional information images (G1, G2) added on the base map image (G0) ) Is superimposed on the additional image layer (L) in which the map image (IM) is arranged to generate the map image (IM), and the display setting image (IE) which is an image of a setting screen for setting the display content of the map image (IM) )
The additional information images (G1, G2) are classified into a plurality of types and distributed to a plurality of different additional image layers (L (L1, L2)) for each type,
In the display image generation step, a map layer icon (MI) schematically showing the base map layer (M) and a plurality of additional image layers (L (L1, L2)) are schematically shown. Generating the display setting image (IE) including a layer selection image (IS) that is an image representing the additional image layer icon (LI (LI1, LI2)) side by side;
In the operation input receiving step, each of the additional image layer icons (LI (LI1, LI2)) is assigned to each of the additional image layer icons (LI (LI1, LI2)) based on a user selection operation on each of the plurality of additional image layer icons (LI (LI1, LI2)). Accepting an instruction as to whether or not to display the additional information image (G1, G2) of the corresponding type on the map image (IM);
In the display image generation step, the base map layer (M) and the additional image layer (L (L1, L2)) designated to be displayed according to the necessity instruction are overlapped to generate the map image ( IM).

  INDUSTRIAL APPLICABILITY The present invention is applicable to a map display system that displays an image on a display screen and displays at least a map image as a display image on a display input device that receives an instruction input for the content of the display image displayed on the display screen. it can.

5: Display image generation unit 7: Operation input reception unit 10: Navigation system (map display system)
20: Display input device 21: Display section (display screen)
22: Operation input unit G0: Base map image G1: Facility information image (additional information image)
G2: Traffic information image (additional information image)
IE: Display setting image IM: Map image IS: Layer selection image L: Additional image layer L1: First additional image layer L2: Second additional image layer LI: Additional image layer icon LI1: First additional image layer icon LI2: First 2 Additional image layer icon M: Base map layer MI: Map layer icon

Claims (6)

A map display system that displays an image on a display screen and displays at least a map image as the display image on a display input device that receives an instruction input for the content of the display image displayed on the display screen,
A display image generation unit for generating the display image;
An operation input receiving unit that receives the instruction input to the display input device,
The display image generation unit superimposes a base map layer in which a base map image including at least road network information is arranged on an additional image layer in which an additional information image added on the base map image is arranged. A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
The display image generation unit is a layer selection image that is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing the plurality of additional image layers are displayed side by side. Generating the display setting image including:
The map layer icon is a design corresponding to the display content of the base map image in the map image when generating the display setting image,
The additional image layer icon is a design corresponding to the display content of the additional information image in the map image when generating the display setting image,
Whether the operation input reception unit displays, on the map image, the additional information image of a type corresponding to each additional image layer icon based on a user's selection operation on each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
The map display system, wherein the display image generation unit generates the map image by superimposing the base map layer and the additional image layer specified to be displayed by the necessity instruction.   The display image generation unit is configured so that each of the plurality of additional image layers is distinguishable from the additional image layer that is designated as requiring display and the additional image layer that is designated as not requiring display. The map display system according to claim 1, wherein the layer selection image is generated by changing a display form of each of the corresponding additional image layer icons. The display image generation unit superimposes the layer selection image and the additional information image of the additional image layer designated to be displayed in accordance with the necessity instruction received by the operation input reception unit. map display system according to claim 1 or 2 to generate the display setting image side by side, and the base map image. The additional image layer includes at least a first additional image layer having a facility information image indicating facility information as information of each of a plurality of facilities as the additional information image, and a traffic information image indicating traffic information of a plurality of points. The map display system according to any one of claims 1 to 3 , further comprising a second additional image layer included as the additional information image. A map display program for displaying at least a map image as the display image on a display input device that displays an image on a display screen and receives an instruction input for the content of the display image displayed on the display screen,
A display image generation function in which a display image generation unit generates the display image;
An operation input receiving unit that causes the computer to realize an operation input receiving function that receives the instruction input to the display input device;
In the display image generation function, the base map layer in which a base map image including at least road network information is arranged and the additional image layer in which an additional information image to be added on the base map image is overlaid, A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
In the display image generation function, a layer selection image which is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing each of the plurality of additional image layers are arranged side by side Generating the display setting image including:
The map layer icon is a design corresponding to the display content of the base map image in the map image when generating the display setting image,
The additional image layer icon is a design corresponding to the display content of the additional information image in the map image when generating the display setting image,
Whether the operation input reception function displays the additional information image of a type corresponding to each additional image layer icon on the map image based on a user's selection operation on each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
In the display image generation function, a map display program for generating the map image by superimposing the base map layer and the additional image layer specified to be displayed by the necessity instruction. A map display method for displaying at least a map image as the display image on a display input device that displays an image on a display screen and receives an instruction input for the content of the display image displayed on the display screen,
A display image generation step in which a display image generation unit generates the display image; and
An operation input receiving unit that receives an instruction input to the display input device;
In the display image generating step, the base map layer in which the base map image including at least road network information is arranged and the additional image layer in which the additional information image to be added on the base map image is overlaid are overlapped with each other. A map image is generated, and a display setting image which is an image of a setting screen for setting display contents of the map image is generated,
The additional information images are classified into a plurality of types, and are distributed to a plurality of the additional image layers that are different for each type,
In the display image generation step, a layer selection image is an image in which a map layer icon schematically showing the base map layer and a plurality of additional image layer icons schematically showing each of the plurality of additional image layers are arranged side by side Generating the display setting image including:
The map layer icon is a design corresponding to the display content of the base map image in the map image when generating the display setting image,
The additional image layer icon is a design corresponding to the display content of the additional information image in the map image when generating the display setting image,
In the operation input receiving step, whether the additional information image of a type corresponding to each additional image layer icon is displayed on the map image based on a user's selection operation to each of the plurality of additional image layer icons. Accepts the necessity instruction of no,
In the display image generation step, the map image is generated by superimposing the base map layer and the additional image layer designated to be displayed by the necessity instruction.

Images