JP4633170B2 - Guide image display device, guide image display method, guide image display program, and recording medium - Google Patents

Description

  The present invention relates to a guide image display device, a guide image display method, a guide image display program, and a recording medium that display a map image that guides a route to a set destination. However, the use of the present invention is not limited to the above-described guide image display device, guide image display method, guide image display program, and recording medium.

  Conventionally, in navigation devices, various image display techniques have been provided in order to guide a route in an easy-to-understand manner for a user. For example, a navigation device is provided on the route guidance screen to display the route status in the traveling direction and the landmark of the intersection that makes the next turn left or right even when the display screen changes immediately after turning an intersection. ing.

  Specifically, the navigation device described above temporarily displays a map without a building at the time of switching the display screen, and then three-dimensionally displays the building on the map. With such a display, while the map is displayed, it is possible to confirm the distant state of the currently traveling road and the connection state of other roads with respect to the currently traveling road. In addition, when three-dimensional display of buildings is performed, a plurality of buildings are displayed in three-dimensional order at a time interval that allows a user to visually recognize each building in order from a building far from the vehicle position. Therefore, the user can confirm a plurality of buildings one by one without being disturbed by the front building (see Patent Document 1 below).

JP 2004-226368 A

  However, the technique of Patent Document 1 is not suitable as a display screen display technique when navigation is performed by a mobile terminal device such as a mobile phone. This is because, in the case of a mobile terminal device, since the display screen is small, the displayable route range is narrowed when stereoscopic display as in Patent Document 1 is performed. Even if the scale is changed and a wide route range is displayed, the display size is small and the display is difficult for the user to recognize. As described above, in the case of a mobile terminal device, a problem that an easy-to-view display screen cannot be provided even by using a conventional display method is cited as an example.

  Further, in the case of a mobile terminal device, when a large amount of information is displayed on a small display screen, a problem that the content of necessary information cannot be recognized only by the user looking at the display screen is cited as an example.

  Moreover, in the case of the said patent document 1, the relationship between the priority of the information currently displayed on the display screen, and the layout of a display screen was not considered conventionally, regardless of the case of a portable terminal device. Therefore, in order to confirm a plurality of pieces of information, each display location in the display screen has to be viewed. Such a display screen has a problem that the viewing user is burdened because there are many viewpoint movements.

  The guide image display device according to the first aspect of the present invention is the guide image display device that displays on the display screen an image for guiding the moving body along the route to the set destination. A generating unit that generates a guidance image indicating a direction to travel at a plurality of intersections or branching points existing on the display unit, and a display control unit that displays the generated guidance image, the display control unit including: When the moving body moves along the route, the guidance images are arranged in the order of reaching the intersection or branch point, and the actual arrangement distance of the intersection or branch point is displayed at a reduced interval. The guide image is scrolled and displayed in accordance with the movement of the current position of the moving body.

  The guided image display method according to the invention of claim 8 is a guided image display method in a guided image display device for displaying an image for guiding a moving body along a route to a set destination on a display screen. A generation step of generating a guidance image indicating a direction to travel at a plurality of intersections or branch points existing on the route of the moving body, and a display control step of displaying the generated guidance image, In the display control step, when the moving body moves along the route, the guide images are arranged in an order of reaching the intersection or branch point, and an actual arrangement distance of the intersection or branch point is set. The guidance image is scrolled and displayed in accordance with the movement of the current point of the moving body while being displayed at a reduced interval.

  A guide image display program according to a ninth aspect of the invention causes a computer to execute the guide image display method according to the eighth aspect.

  According to a tenth aspect of the present invention, there is provided a recording medium in which the guidance image display program according to the ninth aspect is recorded in a computer-readable manner.

It is a block diagram which shows an example of a functional structure of the route guidance apparatus of this Embodiment of this invention. It is a flowchart which shows an example of the content of the process of a route guidance apparatus. It is a block diagram which shows an example of the hardware constitutions of the portable terminal device concerning a present Example. It is explanatory drawing which shows an example of a structure of the route guidance screen displayed on a display. It is a flowchart which shows an example of the content of the image display process of a route guidance screen. It is a flowchart which shows an example of the content of the display process which linked each display area. It is explanatory drawing which shows the other example of a display of a route guidance screen.

  Exemplary embodiments of a guide image display device, a guide image display method, a guide image display program, and a recording medium according to the present invention will be described below in detail with reference to the accompanying drawings.

(Functional configuration of the route guidance device)
First, the functional configuration of the route guidance device according to the embodiment of the present invention will be described. FIG. 1 is a block diagram showing an example of a functional configuration of the route guidance device according to the present embodiment of the present invention. As shown in FIG. 1, the route guidance device 100 according to the embodiment of the present invention includes a generation unit 101, a display control unit 102, and a detection unit 103. Further, the display control unit 102 includes an acquisition unit 104 and a layout unit 105. The route guidance device 100 is connected to a display screen 110 that displays a map image that guides the route to the set destination. A route is a guidance route obtained by searching a route to a destination set by a user using a route search device.

  The generation unit 101 generates guidance information to be displayed on the display screen 110. The guidance information is an image that indicates directions to travel at a plurality of intersections or branching points that exist on the guidance route ahead of the current location of the moving body on which the route guidance device 100 is mounted. Hereinafter, for the sake of convenience, the meaning of both an intersection and a branch point will be referred to as a “branch point”.

  Here, the guidance image will be described in detail. The guide image is an image made up of arrows or characters representing the direction of turning left or right. Specifically, for example, a guidance image including an arrow is configured by an arrow image indicating a direction in which the user actually turns left and right when traveling on a specified route in a specified direction of travel. The direction indicated by the arrow may be simply right, left, diagonal right, or diagonal left, but an arrow image may be generated in accordance with the shape of the guidance route at the actual branch point.

  Note that how much an arrow guide image having a shape similar to an actual guide route can be generated in the generation unit 101 is information about a branch point provided to the generation unit 101 (more specifically, paragraph number [0021] Depending on the accuracy). Further, even if an arrow image that is too similar to the actual shape is generated, the arrow image may not be suitable for the user to make a right / left turn determination instantaneously. Therefore, basically, it is set to generate an image of a simple arrow. Thereafter, the user may appropriately set variations in the shape of the arrow image to be generated, and generate an optimum image.

  Moreover, the guidance image which consists of a character is comprised by the image | video of the alphabet and Chinese character which showed the direction where a user turns right and left. Specifically, for example, “R”, “right” representing a right turn, “L”, “left” representing a left turn are generated. In addition, when representing diagonally right or diagonally left, a character representing a basic diagonal may be added, or an image in which the character itself is tilted in accordance with the actual branch shape may be generated.

  Further, in addition to the above-described guidance image with arrows and characters, the user may individually set so as to generate an image representing a left or right turn. For example, when the generation unit 101 acquires image information of a landmark that is a landmark in the direction to travel near the branch point as information about the branch point, the image information of the landmark may be used as a guide image. Thus, since the content of the guidance image can be set for each user, it is possible to generate a guidance image that is most easily recognized by each user.

  In addition, the production | generation part 101 is acquiring the information regarding a branch point from a guidance path | route, in order to produce | generate a guidance image. The information related to the branch point is information including position information of the branch point and right / left turn information. In addition to the above-mentioned information, the information related to the branch point includes information on the name of the branch point (for example, “× ○ Elementary School”, “□ Machi 3-chome”), and the landmark that serves as the landmark of the branch point. Image information and the like may be included. Information about these branch points is extracted from the map image of the guidance route.

  In addition, in order to generate a guide image in the generation unit 101, information on the current location is required along with information on the branch point described above. Therefore, the generation unit 101 is provided with information on the current location of the moving object. The current location information is information that represents a location where the user of the route guidance device 100 is currently located. Specifically, for example, latitude and longitude information is provided. In addition to the latitude and longitude information, coordinate information corresponding to a predetermined reference point may be provided.

  As a method for detecting the current location, for example, there is a method for detecting the current location by receiving a GPS (Global Positioning System) signal. In the case of a method using a GPS signal, the route guidance device 100 includes a GPS signal receiver, and latitude / longitude information is calculated based on the GPS signal received by the GPS receiver. In addition to the method of receiving GPS signals, there is a method of detecting the current location using communication base station information of a mobile phone or PHS (Personal Handy-phone System), and any method may be used. .

  When the moving body moves along the guidance route, the display control unit 102 arranges the guidance images generated by the generation unit 101 in the order of reaching the branch point and displays the guidance images on the display screen 110. In addition, when the moving body passes through a branch point corresponding to one of the guide images generated by the generation unit 101, the display control unit 102 deletes the one guide image from the display screen 110. Also good. The display control unit 102 arranges and displays a new guidance image that is not displayed on the display screen 110 in accordance with the order of arrival at the branch point together with the erasing process.

  The display control unit 102 can also scroll the guidance image on the display screen 110 in accordance with the movement of the traveling position of the moving body. When such display control is performed, the amount of change at equal time intervals in the information on the current location provided to the generation unit 101 is detected, and the speed is detected by calculating the amount of change at the current location at each time interval. do it. Alternatively, the detection unit 103 may be provided in the moving body. The detection unit 103 detects the traveling speed of the moving body. The guide image can be scrolled according to the traveling speed detected by the detection unit 103.

  Further, the display control unit 102 may include an acquisition unit 104 and a layout unit 105 in order to divide the display area of the display screen 110 and display an arbitrary image. The acquisition part 104 acquires the map image which guides the map image ahead of a moving body to the set destination. The layout unit 105 divides the display area of the display screen 110 into left and right so that the guide image is displayed on the same display screen as the map image acquired by the acquisition unit 104. And then. The guide image generated by the generation unit 101 is set to be displayed in one divided display area, and the map image acquired by the acquisition unit 104 is set to be displayed in another display area.

  In addition, the display control unit 102 displays the guidance images generated by the generation unit 101 in the order of the guidance route ahead of the travel position. The guide route order is the order of the branch points that the user reaches when traveling on the guide route from the current point to the destination. In addition, the guide images may be simply arranged at equal intervals, but preferably, the distance between the actual branch points is displayed at a reduced interval, and each time the traveling position approaches the branch point, The guidance image of the branch point may be displayed so as to move below the display area set by the layout unit 105. Such a display allows the user to intuitively confirm the distance to the next branch point.

  Further, the guide images arranged in the order of the guide routes are generated by the generation unit 101 by the number of branch points. However, depending on the total length of the guide routes and the display scale setting, all the guide images are displayed on the display screen 110 simultaneously. Cannot be displayed. Therefore, the display control unit 102 may display only a predetermined number of guide images in the order of the guide route.

  In addition, as described above, the display control unit 102 can divide the display area of the display screen 110 into left and right by the layout unit 105 and display a guide image on one side and a map image on the other side. Below the display area, it may be controlled to display a guidance image of a branch point within a predetermined distance from the traveling position among the guidance images. At the same time, control is performed so that the map image closest to the traveling position in the map information is displayed below the other display area.

  By performing the display control as described above, the display control unit 102 can concentrate and display information immediately before the current point, which is necessary immediately to confirm the guidance route, below the display screen 110. it can. In order to confirm the necessary information immediately, the user only needs to pay attention to the lower part of the display area, and does not need unnecessary viewpoint movement. Further, it may be controlled so that the information around the travel position is concentrated above the display area depending on the angle at which the user is viewing the display screen 110 and the direction of travel. . Further, when the display screen 110 is divided into upper and lower parts, control may be performed so that information around the traveling position is concentrated on the right or left side of the display area.

  Further, in order to perform a display that allows the user to easily recognize the guidance route, the display control unit 102 determines the scrolling speed of the guidance image according to the detected traveling speed when the detecting unit 103 detects the traveling speed. It is adjusted and displayed. Thus, by adjusting the actual traveling speed and the scrolling speed, it is possible to realize a display that allows the user to visually understand and recognize the traveling speed in addition to the guidance information.

  Similarly, the display control unit 102 displays a guidance image of a branch point when any branch point on the guide route is within a predetermined distance from the travel position in order to display the guide route so that the user can easily recognize the guide route. You may enlarge and display. In addition to enlarging the induced image, display such as changing the color or density of the induced image may be performed to recognize that the induced image approaching within a predetermined distance from the traveling position is important information.

(Contents of route guidance device processing)
Next, the processing contents of the route guidance device 100 will be described. FIG. 2 is a flowchart showing an example of the contents of processing of the route guidance device. In the flowchart of FIG. 2, it is first determined whether or not there is a branch point on the route ahead of the current point (step S201). Here, when there is no branch point on the route (step S201: No), since it is not necessary to display the guidance image, a series of processing is finished as it is. On the other hand, if there is a branch point on the route in step S201 (step S201: Yes), a guidance image representing the direction to travel at the branch point is generated (step S202).

  Next, it is determined whether or not guide images of all branch points on the route have been generated (step S203). If the guidance images for all branch points have not been generated (step S203: No), the process returns to step S202, and the remaining branch point guidance images are generated.

  On the other hand, when the guidance images of all branch points are generated in step S203 (step S203: Yes), the generated guidance images are arranged in the order of arrival (step S204), and the guidance images are displayed on the display screen 110 according to the current location. (Step S205).

  Then, it is determined whether or not the vehicle has passed a branch point as the moving body moves (step S206). Here, when the moving body passes through the branch point (step S206: Yes), the guidance image of the branch point that has passed is deleted from the display screen 110 (step S207). If the moving body has not passed the branch point (step S206: No), the process proceeds to step S208 as it is.

  Thereafter, it is determined whether or not the mobile body has reached the destination (step S208), and the process returns to step S205 until the destination is reached, and the guidance image is repeatedly displayed and erased (step S208: No loop). ). If it is determined in step S208 that the moving body has reached the destination (step S208: Yes), the series of processes is terminated as it is.

  As described above, the route guidance device 100 according to the embodiment of the present invention can generate a guidance image specialized for recognizing a direction to travel at a branch point. In addition, the guide image that generated the display of the guide image is displayed on the same display screen 110 as the map image, and important information is displayed in a concentrated manner in the designated display area (for example, below the display area). Control. Therefore, it is possible to provide the display screen 110 that is easy for the user to recognize by effectively displaying only important information for route guidance.

  Further, as described above, the route guidance device 100 can effectively display only important information. Therefore, even in a portable terminal device having a display screen smaller than that of a general navigation device, it is possible to realize a guidance image that allows necessary information to be recognized with a glance.

  Examples of the present invention will be described below. In the present embodiment, a description will be given of a case where a route guidance program according to the present invention is executed in a mobile terminal device that stores an application for performing vehicle navigation. Depending on the country or region, when the vehicle is navigated using the mobile terminal device, the driver's own operation of the mobile terminal device may not be permitted. Even in such a case, the passenger can confirm the guidance contents as a user of the portable terminal device and use the technique by instructing the driver about the guidance contents. Since the image display apparatus according to the present invention can perform display so that the contents of guidance are immediately transmitted, even with the above-described technique, the image display apparatus can be used as if the user himself / herself checks the screen.

(Hardware configuration of portable terminal device)
First, the hardware configuration of the mobile terminal device according to the present embodiment will be described. FIG. 3 is a block diagram illustrating an example of a hardware configuration of the mobile terminal device according to the present embodiment. In FIG. 3, a mobile terminal device 300 includes a CPU 301, a ROM 302, a RAM 303, a magnetic disk drive 304, a magnetic disk 305, an audio I / F (interface) 306, a microphone 307, a speaker 308, and an input device. 309, a video I / F 310, a display 311, a camera 312, a communication I / F (interface) 313, and a GPS unit 314. Each component 301 to 314 is connected by a bus 320.

  Hereinafter, each of the components 301 to 314 will be described. Note that the mobile terminal device 300 has a function as a mobile phone terminal and a function as a communication terminal that communicates by connecting to a network, but here, a description will be given of processing particularly when the navigation function is executed. The functions related to navigation will be described.

  First, the CPU 301 governs overall control of the mobile terminal device 300. In addition to the boot program, the ROM 302 records programs such as a route search program and a route guidance program in order to realize navigation in particular.

  As described above, a program such as the spot information search program may be recorded in the ROM 302 in advance, but the program may be downloaded from an external network via a communication I / F 313 described later. A program downloaded from the outside is recorded in a RAM 303 and a magnetic disk 305 described later.

  The RAM 303 is used as a work area of the CPU 301 and a built-in memory of the mobile terminal device 300. The magnetic disk drive 304 controls the reading / writing of the data with respect to the magnetic disk 305 according to control of CPU301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, an HD (hard disk) can be used.

  Another example of information recorded on the magnetic disk 303 is map information used for route search and route guidance. The map information includes background data representing features (features) such as buildings, rivers, and the ground surface, and road shape data representing the shape of the road. The map information can be displayed two-dimensionally or three-dimensionally on the display screen of the display 311. Drawn. When the mobile terminal device 300 is in the route guidance, the map information and the current location of the vehicle acquired by the GPS unit 314 described later are displayed in an overlapping manner.

  The background data of the map information includes latitude / longitude information of representative points of various features in addition to latitude / longitude information of each point on the map. For this reason, for example, when one point on the map information displayed on the display 311 described later is designated by the user, the latitude / longitude information of the point can be extracted from the map information. For example, when the name of a certain feature is input, the latitude / longitude information of the representative point can be extracted from the map information.

  In this embodiment, the map information is recorded on the RAM 303 or the magnetic disk 305, but the present invention is not limited to this. The map information is not limited to being recorded integrally with the hardware of the mobile terminal device 300, but may be recorded in an external server that can be connected to the mobile terminal device 300. In this case, the mobile terminal device 300 acquires map information via the communication network through the communication I / F 313, for example. The acquired map information is recorded in the RAM 303, the magnetic disk 305, or the like.

  The audio I / F 306 is connected to a microphone 307 for audio input and a speaker 308 for audio output. The sound received by the microphone 307 is A / D converted in the sound I / F 306. Also, sound is output from the speaker. The input device 309 includes input buttons for inputting characters, numerical values, various instructions, and the like. Further, an external connection connector may be provided, and an independent keyboard may be connected for input.

  The video I / F 310 is connected to the display 311. Specifically, the video I / F 310 includes, for example, a graphic controller that controls the entire display 311, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. Based on the output image data, the display 311 is configured by a control IC or the like.

  The display 311 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 311, for example, liquid crystal displays with various resolutions according to the application can be adopted. The camera 312 may be a type incorporated in the mobile terminal device 300 main body or an external type connected by an external connection connect. The video imaged by the camera 312 is converted into data for recording by the video I / F 310 and recorded in the RAM 303 or the magnetic disk 305 depending on the application.

  The communication I / F 313 is connected to a communication network via wireless and functions as an interface between the other mobile terminal device 300 and the CPU 301. Communication between the mobile terminal devices 300 via the communication I / F 313 may be performed directly, or may be performed via a predetermined base station. The communication I / F 313 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 301.

  The communication network includes a LAN, a public line network and a mobile phone network. Specifically, the communication I / F 313 includes, for example, an FM tuner, a VICS (Vehicle Information and Communication System) / beacon receiver, a wireless communication device, and other communication devices.

  The GPS unit 314 receives radio waves from GPS satellites and outputs information indicating the current location of the mobile terminal device 300. The output information of the GPS unit 314 is used when the CPU 301 calculates the current location of the mobile terminal device 300. The information indicating the current location is information for specifying one point on the map data, such as latitude / longitude and altitude.

  When corresponding to the hardware configuration of the mobile terminal device 300 described above, the generation unit 101 of the route guidance device 100 illustrated in FIG. 1 includes, for example, a CPU 301, a ROM 302, a magnetic disk drive 304, a magnetic disk 305, an input device 309, and The function is realized by the communication I / F 313. Further, the display control unit 102 realizes its function by, for example, the CPU 301, the ROM 302, the RAM 303, and the video I / F 310. The detection unit 103 realizes its function by, for example, the CPU 301, the ROM 302, and the GPS unit 314. The acquisition unit 104 realizes its function by, for example, the CPU 301, the ROM 302, the magnetic disk drive 304, and the magnetic disk 305. Further, the layout unit 105 can realize its function by, for example, the CPU 301, the ROM 302, and the video I / F. Further, the display screen 110 connected to the route guidance device 100 realizes its function by the display 311, for example.

(Configuration of route guidance screen)
Next, the configuration of the route guidance screen displayed on the display 311 by the mobile terminal device 300 will be described. FIG. 4 is an explanatory diagram illustrating an example of a configuration of a route guidance screen displayed on the display.

  As shown in FIG. 4, in the route guidance screen, the display area 400 of the display 311 is divided into a map image display area 410 and a guide image display area 420. The map image display area 410 includes a travel position point 411, a route 412, a nearest branch point 413, a straight route 414, a scale point 415, an orientation point 416, a route type 417, and a positioning type 418. Has been. Each of the components 411 to 418 of the map image display area 410 represents the following contents.

-Traveling position point 411: Indicates the current traveling position-Route 412: Indicates the guidance route to the destination-Nearest branch point 413: Indicates the next branch point-Straight route 414: Straight route from the traveling position to the destination・ Scale point 415: Map image scale ・ Direction point 416: Map image orientation ・ Route type 417: Current route type (paid / general) ・ Positioning type 418: Travel Indicates the positioning method

  Note that the map image in the display area 410 can basically perform display processing equivalent to that of a conventional route guidance screen. For example, when the user designates a location that the user wants to browse as a normal map image, processing for displaying the location, processing for displaying a route to the destination in advance, and the like are possible.

  On the other hand, the guide image display area 420 includes a left / right turn distance 421 and guide points 422 to 425. In addition, each of the components 421 to 425 of the guide image display area 420 represents the following contents. Since the guidance points are arranged according to the distance between the branch points, the number displayed at a time changes as appropriate according to the travel position.

・ Right / left turn distance 421: Indicates the distance from the travel position to the nearest branch point. Guidance points 422-425: Indicates the right / left turn direction at the branch point.

  In addition, when a change in the travel position is detected by the mobile terminal device 300, the mobile terminal device 300 enters a travel state, and the display contents of the display areas 410 and 420 are changed according to the travel speed.

  Specifically, in the display area 410, the travel position point 411 moves so as to travel along the route 412 in accordance with travel. Actually, since the travel position point 411 is fixedly displayed at a predetermined position in the display area 410, the route 412 is displayed so as to scroll down the display area 410.

  Moreover, in the display area 420, the numerical value of the right / left turn distance 421 changes according to traveling. In addition, for the guidance points 422 to 425, the guidance points that have passed are erased, and the guidance point that is arranged next is displayed at a position of 0 m.

  Specifically, when the travel position point 411 passes through the latest branch point 413, the guidance point 422 is deleted, and the guidance point 423 is arranged at a position of 0 m. In addition, the guidance point arranged behind the guidance point 425 is appropriately displayed according to the distance from the guidance point 423. As described above, the guidance points 422 to 425 are displayed so as to fall from the upper side to the lower side of the display area 420 according to the traveling.

  A display area 401 for displaying the distance to the destination independently of the two display areas 410 and 420 described above and a display area 402 for displaying the estimated arrival time are set. Thus, the display area 400 is set so that important information is concentrated and displayed downward.

(Contents of route guidance screen image display processing)
Next, details of specific processing for displaying the route guidance screen as shown in the display area 400 of FIG. 4 by the mobile terminal device 300 will be described in detail. FIG. 5 is a flowchart showing an example of the contents of the route guidance screen image display process. In the flowchart of FIG. 5, first, the current location of the mobile terminal device 300 is measured (step S501), and it is determined whether there is a searched route within a radius of 50 m of the current location (step S502).

  In step S502, when there is no route searched for within the radius of 50 m of the current location (step S502: No), the process returns to step 501 and shifts to the process of positioning the current location again (step S501). On the other hand, when there is a searched route within a radius of 50 m of the current location (step S502: Yes), route matching between the current location and the route is performed (step S503).

  Next, the traveling direction of the route specified by route matching is determined (step S504). Furthermore, a heading-up display of the map of the current location is displayed based on the determined traveling direction (step S505). The heading-up display is a display method for displaying so that the reference direction faces upward. Therefore, the map image is appropriately rotated by a left / right turn by the processing in step S505, and is displayed so that the traveling direction is always upward.

  After that, when information on the guide points within the displayable distance from the current location (in the case of FIG. 4, within about 1 km) is acquired (step S506), the acquired guide points are arranged in order of distance (step S507), and the distance from the current location is set. In response, the guidance point is displayed (step S508).

  Subsequently, it is determined whether there is a guidance point within a radius of 100 m of the current location (step S509). If there is a guidance point within a radius of 100 m (step S509: Yes), a guidance point corresponding to a radius of 100 m is determined. Is enlarged and displayed (step S510).

  When the process of step S510 is completed, or when there is no guidance point within a radius of 100 m (step S509: No), it is subsequently determined whether the route guidance is completed (step S511). If it is determined in step S511 that the route guidance is continuing (step S511: No), the process returns to step S501 and the display process is performed again. On the other hand, when the route guidance is finished (step S511: Yes), a series of display processing is finished as it is.

  Note that the value of the radius from the current location in step S502 and the value of the radius from the current location in step S509 shown in FIG. 5 are examples, and can be changed as appropriate by the user so that the display can be easily recognized. .

(Display processing that links each display area)
Next, a display process in which the display areas (display areas 410 and 420) are linked will be described. The display area 410 of the map image as shown in FIG. 4 and the display area 420 of the guide image can also perform display processing in which the display contents of both are linked.

  Specifically, when a designation from a user is received for any of the guidance points displayed in the display area 420, the display area 410 displays a map image of a branch point corresponding to the designated guidance point. Display processing can be performed.

  FIG. 6 is a flowchart showing an example of the contents of display processing in which the display areas are linked. In the flowchart of FIG. 6, first, it is determined whether or not the designation of the guidance point has been received from the user (step S601). Here, if designation | designated is received (step S601: Yes), the latitude longitude information of the designated guidance point will be acquired (step S602). If no designation is accepted in step S601 (step S601: No), the process proceeds to step S606 in order to display a map image corresponding to the current location as usual in the display area 410.

  Next, the traveling direction of the route at the acquired latitude / longitude is determined (step S603), and the acquired latitude / longitude map information is displayed in a heading-up manner based on the traveling direction determined at step S603 (step S604). .

  Then, it is determined whether or not a predetermined time has elapsed since the heading-up display in step S604 was performed (step S605). Here, it waits until a predetermined time elapses (step S605: No loop), and when it elapses (step S605: Yes), a map image of the current location is displayed in a heading-up with reference to the traveling direction (step S606). The process ends. By performing the processing as described above, the user can confirm what kind of road the designated guidance point is actually.

(Example of route guidance screen display)
Next, another display example of the route guidance screen will be described. FIG. 7 is an explanatory diagram illustrating another display example of the route guidance screen. Various displays can be set as displayed as display examples 710, 720, 730, and 740 in FIG.

  Display examples 710 and 720 in FIG. 7 are route guidance screens in which the types of guidance points are changed. A display example 710 is a route guidance screen displayed so that the guidance points 711 to 713 configured by kanji fall sequentially. The display example 720 is a route guidance screen displayed so that the guidance points 721 to 723 configured by English initials (L, R) representing left and right fall one after another.

  By displaying the guidance points 422 to 425 using kanji and alphabets as shown in the display examples 710 and 720, the process of converting the arrow into a word representing the actual direction can be omitted. As in the present embodiment, when another rider who is a user of the mobile terminal device 300 needs to instruct the driver to turn in the left or right direction, it prevents the passenger from making a mistake in the right or left turn direction. be able to.

  In addition, display examples 730 and 740 in FIG. 7 are route guidance screens to which new additional information is added. In the display example 730, among the guidance points 731 to 733, the guidance point 732 including specific information is displayed by changing the color. The specific information includes information that represents the vicinity of a route intermediate point, information that represents a break point set for each predetermined distance, information that represents a switching point between a general road and a toll road, and the like. In addition to these pieces of information, information arbitrarily set by the user can be added.

  In addition, the display example 740 represents a display having a function of displaying the road traffic situation. When the mobile terminal device 300 acquires traffic jam information using the communication I / F 313, a warning point 741 indicating a traffic jam location is additionally displayed on the route 412, and an area 742 corresponding to the warning point 741 is also jammed. Is displayed in a different color from other sections.

  In addition to the display example shown in FIG. 7, guidance points beyond 1 km are collectively overlapped with the farthest guidance point displayed on the screen (for example, guidance point 425 shown in FIG. 4). May be displayed. Further, at this time, it may be displayed so that it is possible to grasp how many induction points are overlapped. By performing such a display, the user can visually confirm how many more left and right turns to reach the destination.

  As described above, according to the present embodiment, even the display 311 of the mobile terminal device 300 can display information necessary for route guidance so that the user can easily recognize it.

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

DESCRIPTION OF SYMBOLS 100 Route guidance apparatus 101 Generation | occurrence | production part 102 Display control part 103 Detection part 104 Acquisition part 105 Layout part 110 Display screen

Claims (10)

In a guidance image display device that displays on a display screen an image for guiding a moving body along a route to a set destination,
Generating means for generating an induced image indicating the direction to be advanced in a plurality of intersections or branch point existing on the front Symbol path of the moving body,
And a display control means for displaying the derived image image pre SL is generated,
Wherein the display control unit, if the previous SL mobile moves along the path, the induction image, arranged in order to arrive at the intersection or branch point, and the actual placement distance of the intersection or branch point Is displayed at a reduced interval, and the guide image is scrolled and displayed in accordance with the movement of the current location of the mobile object. The present invention has an acquisition means for acquiring a map image for guiding the mobile body to the set destination in front of the current point of the mobile body,
  The display control means simultaneously displays the guidance image and the map image on the display screen, and is displayed according to the movement of the current location of the moving body when the moving body moves along the route. The guide image display device according to claim 1, wherein the map image and the guide image that are displayed are scrolled and displayed. The guidance image display device according to claim 2, wherein the display control means divides the display area of the display screen into an area for displaying the map image and an area for displaying the guidance image. The display control means displays a map image closest to the travel position in the map image below the area where the map image is displayed, and a predetermined distance from the travel position below the area where the guide image is displayed. The guide image display device according to claim 3, wherein the guide image is displayed within the guide image. Comprising detection means for detecting the traveling speed of the moving body,
  The guide image display according to any one of claims 1 to 4, wherein the display control means adjusts and displays a scroll speed of the guide image according to a traveling speed detected by the detection means. apparatus. The said generation means produces | generates the induced image which consists of the arrow or character showing the direction which should advance at an intersection or a branch point using the information regarding an intersection or a branch point. The guidance image display device described in 1. The display control means enlarges and displays a guidance image of the intersection or branch when any intersection or branch on the route approaches within a predetermined distance from the travel position. Item 7. The induced image display device according to any one of items 1 to 6. In a guide image display method in a guide image display device for displaying an image for guiding a moving body along a route to a set destination on a display screen,
  Generating a guidance image indicating directions to travel at a plurality of intersections or branch points existing on the route of the moving body;
  A display control step of displaying the generated guidance image,
In the display control step, when the moving body moves along the route, the guide images are arranged in an order of reaching the intersection or branch point, and an actual arrangement distance of the intersection or branch point is set. A guide image display method, wherein the guide image is displayed at a reduced interval, and the guide image is scrolled and displayed in accordance with the movement of the current location of the mobile object. A guide image display program for causing a computer to execute the guide image display method according to claim 8. A recording medium in which the guidance image display program according to claim 9 is recorded in a computer-readable manner.

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