JP2021015126A - Display control device, display control method, and display control program - Google Patents

Abstract

To improve convenience for a user.SOLUTION: An on-vehicle device 100 comprises: an acquisition unit 102 that acquires position information on another vehicle V2 from information received through radio communication; a display control unit 104 that controls a display 2 to display a current position of the another vehicle V2 on an electronic map EM on the basis of the position information acquired by the acquisition unit 102; and a changing unit 103 that, when the current position of the another vehicle V2 is outside a display range 50 of the electronic map EM displayed on the display 2, changes the scale of the electronic map EM so that the current position of the another vehicle V2 falls within the display range 50.SELECTED DRAWING: Figure 6

Description

The present invention relates to a display control device, a display control method, and a display control program that display the current position of another mobile body based on information received via wireless communication.

For example, Patent Document 1 discloses a technique for transmitting / receiving information to / from another mobile body using vehicle-to-vehicle communication.

Japanese Unexamined Patent Publication No. 2004-164315

For example, when the display range of the map by the display means is set narrower than the communicable range, or when the above display range is set to be the same as or wider than the communicable range, communication is possible by improving the communication status. When the range becomes wider than the display range, information can be received from other moving objects whose current position is outside the display range and which exists at a relatively distant position of the user. The current position of another moving object whose current position is outside the above display range and which exists at a relatively distant position of the user is not displayed on the map displayed on the display means.

By the way, for example, in order to support safe driving to notify whether vehicles come into contact with each other, it suffices to provide the user with the existence of another moving body existing at a relatively close position to the user and the current position thereof. Other moving objects that are outside the display range and are located at a relatively distant position of the user may not be displayed on the map displayed by the display means. However, for example, if you are aware in advance whether there are emergency vehicles, construction vehicles, vehicles driven by beginners or elderly people, etc., it will be useful for driving in the sense of preventive or advance avoidance, and other than safe driving support. If you want to know whether there are other moving objects such as the user's family / acquaintance's vehicle or the vehicle registered in advance by the user for the purpose, if the current position is outside the above display range, that is, the user's Even if it exists at a relatively distant position, it is very convenient if the existence and its current position can be provided to the user. In addition, if the presence of other moving objects that are relatively close to the user cannot be displayed depending on the scale, such as when the scale of the map is enlarged and displayed, the above-mentioned safe driving support is also available. It would be very convenient if the user could be provided with its existence and its current position.

The above-mentioned problems are given as an example of the problems to be solved by the present invention.

In order to solve the above problem, the invention according to claim 1 is based on the self-position information indicating the position of the self and the position information of the other moving body indicating the position of the other moving body, and the self-position and the other moving body. A display control device that displays the position of a moving body on a map, and when the position of the other moving body is outside the display range of the map, the control to change the scale of the map and the display range are displayed. A display control means for changing the display so that the position of the self and the position of the other moving body are within the display range by performing the scrolling control is provided.

Further, in order to solve the above problem, the invention according to claim 5 is based on the self-position information indicating the self-position and the other-moving body position information indicating the position of the other moving body, and the self-position and the other. A display control procedure for displaying and controlling the position of the moving body on the map, and a control for changing the scale of the map when the position of the other moving body is outside the display range of the map. The display is controlled to scroll the display range, and the display is changed so that the self-position and the position of the other moving body are within the display range.

Further, in order to solve the above problem, the invention according to claim 6 is based on the self-position information indicating the self-position and the other-moving body position information indicating the position of another moving body, and the self-position and the other. A display control procedure for displaying and controlling the position of the moving body on the map, and a control for changing the scale of the map when the position of the other moving body is outside the display range of the map. The computer is made to execute the control of scrolling the display range and the change procedure of changing the display so that the self-position and the position of the other moving body are within the display range.

It is a figure which shows an example of a plurality of vehicles including the vehicle equipped with the in-vehicle device which is one Embodiment of the navigation device of this invention. It is a block diagram which shows the hardware composition example of the electronic system of the own vehicle. It is a functional block diagram which shows the functional configuration example of the wireless communication control part of the in-vehicle device of another vehicle. It is a functional block diagram which shows the functional configuration example of the wireless communication control unit of the vehicle-mounted device of the own vehicle, and the functional configuration example of the control unit exhibited by the CPU executing a predetermined program stored in the storage device. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is a flowchart which shows the control procedure example of the navigation method executed by the CPU in the in-vehicle device of the own vehicle by the navigation program stored in the storage device. It is a flowchart which shows the control procedure example of the navigation method executed by the CPU in the in-vehicle device of the own vehicle by the navigation program stored in the storage device. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and another vehicle in the modification which scrolls a display range. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is explanatory drawing which shows the transition of the display content of the display of the own vehicle with the movement of the own vehicle and other vehicles. It is exhibited by executing a function configuration example of the wireless communication control unit of the in-vehicle device of the own vehicle and a predetermined program stored in the storage device by the CPU in the modified example of returning to the original display mode after the lapse of a predetermined time. It is a functional block diagram which shows the functional structure example of a control part. By executing a function configuration example of the wireless communication control unit of the in-vehicle device of the own vehicle and a predetermined program stored in the storage device by the CPU in the modified example of changing the display range when the change of the display range is approved. It is a functional block diagram which shows the functional structure example of the control part exhibited. In the modified example of changing the display range when the vehicle registered in advance is out of the display range, the function configuration example of the wireless communication control unit of the in-vehicle device of the own vehicle and the CPU execute a predetermined program stored in the storage device. It is a functional block diagram which shows the functional structure example of the control part which is exhibited by this.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of a plurality of vehicles including a vehicle equipped with an in-vehicle device according to an embodiment of the navigation device of the present invention.

As shown in FIG. 1, the vehicle V1 is equipped with the in-vehicle device 100, and the vehicle V2 is equipped with the in-vehicle device 200. Although only one vehicle V2 is shown in FIG. 1, it is not limited to the case where only one vehicle V2 exists, and a plurality of vehicles V2 may exist. The vehicle-mounted device 100 of the vehicle V1 and the vehicle-mounted device 200 of the vehicle V2 can transmit and receive information to and from each other via wireless communication. In the present embodiment, based on the information received by the vehicle-mounted device 100 (corresponding to the navigation device) of the vehicle V1 from the vehicle-mounted device 200 of one or more vehicles V2 (corresponding to another mobile body) via wireless communication, 1 A case where the current positions of one or more vehicles V2 are drawn on the electronic map EM described later and displayed on the display 2 described later will be described. Hereinafter, the vehicle V1 is referred to as "own vehicle V1" and the vehicle V2 is referred to as "other vehicle V2" as appropriate.

FIG. 2 is a block diagram showing a hardware configuration example of the electronic system of the own vehicle V1.

As shown in FIG. 2, the own vehicle V1 includes an in-vehicle device 100, a display 2, a wireless communication antenna 3, a vehicle speed sensor 4, a brake switch 5, a blinker switch 6, an in-vehicle camera 7, GPS 8, and a gyro sensor 9.

The in-vehicle device 100 includes a control unit 10, a graphic controller 13, and a wireless communication control unit 14.

The control unit 10 includes a CPU 11 and a storage device 12.

The CPU 11 (corresponding to a computer) executes various programs stored in the storage device 12 (including a navigation program for causing the CPU 11 to execute each procedure of the navigation method shown in the flow of FIGS. 9 and 10 described later). By doing so, it has a function of controlling the entire in-vehicle device 100 by performing various processes, exchanging information with other parts, and outputting various control instructions.

The storage device 12 includes a ROM 12a, a RAM 12b, and a storage medium 12c. The ROM 12a is an information storage medium in which the various programs and other necessary information are written in advance. The RAM 12b is an information storage medium in which information necessary for the CPU 11 to execute the various programs is written and read. The storage medium 12c (corresponding to the registration means) is a non-volatile information storage medium such as a flash memory or a hard disk. The storage medium 12c stores various types of information such as map information.

The graphic controller 13 has a function of acquiring image data from a video RAM (not shown) or the like under the control of the CPU 11, drawing an image based on the image data, and displaying the image on the display 2. For example, the graphic controller 13 draws an electronic map EM (corresponding to a map; see FIG. 5 and the like described later) based on the map information stored in the storage medium 12c under the control of the CPU 11, and displays it on the display 2. Further, for example, the graphic controller 13 draws the current position of the own vehicle V1 on the electronic map EM and displays it on the display 2 based on the position information (described later) of the own vehicle V1 under the control of the CPU 11. Based on the position information (described later) of the other vehicle V2, the current positions of one or more other vehicles V2 are drawn on the electronic map EM and displayed on the display 2. The graphic controller 13 may not draw the current position of the own vehicle V1 on the electronic map EM, but may draw only the current position of one or more other vehicles V2 and display it on the display 2.

The display 2 (corresponding to the display means) is composed of, for example, an LCD panel or the like, and displays various information images based on the image signal input from the graphic controller 13.

The wireless communication control unit 14 has a function of controlling transmission / reception of information with the in-vehicle device 200 of each other vehicle V2 by wireless communication via the wireless communication antenna 3.

The wireless communication antenna 3 is attached to the outside of the own vehicle V1 and transmits the information signal input from the wireless communication control unit 14, and the wireless communication control unit 14 of the information signal received from the in-vehicle device 200 of each other vehicle V2. Output to and do.

The vehicle speed sensor 4 has a function of detecting the traveling speed of the own vehicle V1. Based on the detection signal of the vehicle speed sensor 4, the CPU 11 can recognize how fast the own vehicle V1 is traveling at that time.

The brake switch 5 has a function of detecting whether or not the brake of the own vehicle V1 is depressed by a predetermined amount or more to enter the operating state, that is, whether or not the own vehicle V1 is in the decelerating state due to the braking operation.

The winker switch 6 has a function of detecting the presence or absence of a winker operation in either the right direction or the left direction of the own vehicle V1.

The in-vehicle camera 7 has a function of capturing a landscape image in the imaging direction from the own vehicle V1 using, for example, a CCD image sensor, and outputting the corresponding image signal to the CPU 11. The in-vehicle camera 7 may be an infrared sensor, a radar, or the like.

The GPS 8 has a function of positioning the current position of the own vehicle V1, acquiring position information expressed in latitude and longitude, and outputting the position information to the CPU 11.

The gyro sensor 9 has a function of detecting the traveling direction (traveling direction) of the own vehicle V1. Based on the detection signal of the gyro sensor 9, the CPU 11 can recognize in which direction (direction) the own vehicle V1 is traveling at that time.

The own vehicle V1 may not be provided with one or more of the vehicle speed sensor 4, the brake switch 5, the blinker switch 6, the in-vehicle camera 7, and the gyro sensor 9, or may be provided with hardware other than the above. Good.

Further, the electronic system of the other vehicle V2 can have the same hardware configuration as above, but it is not always necessary to have the same hardware configuration as above, and each other vehicle V2 has the same hardware configuration. It doesn't have to be. In the other vehicle V2, the wireless communication control unit of the in-vehicle device 200 is referred to as a "wireless communication control unit 24", and the other units have the same names as described above.

FIG. 3 is a functional block diagram showing a functional configuration example of the wireless communication control unit 24 of the in-vehicle device 200 of the other vehicle V2.

As shown in FIG. 3, the wireless communication control unit 24 includes a transmission / reception unit 241.

The transmission / reception unit 241 intermittently transmits / receives information via wireless communication. One of the most important functions of the transmission / reception unit 251 is to wirelessly transmit information including at least the identification information of the other vehicle V2 (hereinafter, appropriately referred to as "vehicle ID") and the position information of the other vehicle V2 detected by GPS8. It is to transmit intermittently (for example, every 100 [ms]) via communication.

FIG. 4 shows an example of the functional configuration of the wireless communication control unit 14 of the in-vehicle device 100 of the own vehicle V1 and the functional configuration of the control unit 10 exhibited by the CPU 11 executing a predetermined program stored in the storage device 12. It is a functional block diagram which shows an example.

As shown in FIG. 4, the wireless communication control unit 14 includes a transmission / reception unit 141.

The transmission / reception unit 141 intermittently transmits / receives information via wireless communication. One of the most important functions of the transmission / reception unit 141 is to intermittently transmit information including at least the vehicle ID and position information transmitted from the transmission / reception unit 241 in one or more other vehicles V2 via wireless communication. It is to receive the target (for example, every 100 [ms]). The information received by the transmission / reception unit 141 is output to the control unit 10. The information is not limited to being transmitted and received intermittently, and wireless communication may be connected and disconnected intermittently. Further, in wireless communication, information packets are constantly or continuously transmitted, or the contents of continuously transmitted information are updated at the above intervals (for example, every 100 [ms]). May be good. Further, the actual position information transmitted by the other vehicle V2 may include an error in positioning, and the degree of the error does not matter here.

Further, the control unit 10 includes an acquisition unit 102, a change unit 103, and a display control unit 104.

The acquisition unit 102 (corresponding to the acquisition means) acquires at least the position information of the other vehicle V2 from the information received by the transmission / reception unit 141. The information acquired by the acquisition unit 102 is stored and stored in the RAM 12b.

Here, among other vehicles V2 for which information has been received by the transmission / reception unit 151, the current position based on the position information acquired by the acquisition unit 102 corresponds to the drawing range of the electronic map EM by the graphic controller 13. Another vehicle V2 within the display range 50 of the electronic map EM (see FIG. 5 and the like described later) may be included. The display range 50 is basically one of a plurality of scales (for example, 1/2500 scale, 1/5000 scale, 1/10000 scale, etc.) prepared in advance as the scales of the electronic map EM that can be set. A range is set in which the current position of the own vehicle V1 in the electronic map EM set to a predetermined or desired scale is always substantially the center position. At this time, the display range 50 may be reduced or enlarged or the display range 50 may be scrolled by manually operating the user to increase or decrease the scale of the electronic map EM. In the above case, the display control unit 104 (corresponding to the display control means) controls the graphic controller 13 and determines the other vehicle V2 whose current position is within the display range 50 based on the acquired position information. Alternatively, the current position is drawn on the electronic map EM set to a desired scale and displayed on the display 2.

On the other hand, among the other vehicles V2 whose information has been received by the transmission / reception unit 151, the other vehicle V2 whose current position based on the position information acquired by the acquisition unit 102 is outside the display range 50 of the electronic map EM by the display 2. It may be included. For example, when the display range 50 is set narrower than the communicable range, information can be acquired from another vehicle V2 whose current position is outside the display range, or the display range 50 is the same as or equal to the communicable range. When the communication status improves when the setting is wider than the display range, the communicable range becomes wider than the display range 50, and information is acquired from another vehicle V2 whose current position is outside the display range. For example, when the other vehicle V2 whose current position is within the display range 50 moves to a relatively distant position, the current position of the other vehicle V2 is outside the display range 50. In such a case, the change unit 103 (corresponding to the change means) scales the electronic map EM so that the current position is within the display range 50 for all the other vehicles V2 for which the information is received by the transmission / reception unit 151. The display range 50 is expanded (corresponding to a change) by reducing the size. In this example, the changing unit 103 sets the scale of the electronic map EM to the minimum that the current positions of all the other vehicles V2 for which information is received by the transmitting / receiving unit 151 are within the display range 50 among the plurality of scales prepared in advance. The display range 50 is expanded by changing to the scale of. Hereinafter, the display range 50 before the scale of the electronic map EM is changed by the changing unit 103 is referred to as an “original display range 50”, and the display range 50 after the scale of the electronic map EM is changed by the changing unit 103 is referred to as “original display range 50”. Is referred to as "display range 50 after scale change". Then, the display control unit 104 controls the graphic controller 13, and the display range 50 is scaled from the original display range 50 based on the acquired position information for all the other vehicles V2 for which the information is received by the transmission / reception unit 151. The current position is drawn on the changed (reduced scale) electronic map EM to the changed display range 50, and is displayed on the display 2.

5 and 8 are explanatory views showing the transition of the display contents of the display 2 of the own vehicle V1 as the own vehicle V1 and the other vehicle V2 move. In addition, in these FIGS. 5 to 8, in order to avoid the complexity of the illustration and facilitate understanding, one other vehicle V2 that transmits information is used.

In FIG. 5A, the own vehicle V1 is traveling on the road R1 along the vertical direction in the figure toward the upper side in the figure, and the other vehicle V2 intersects the road R1 in the left-right direction in the figure. It shows the situation of traveling on the road R2 along the road toward the right side in the figure. In the situation shown in FIG. 5A, the own vehicle V1 has not received information from the other vehicle V2 by the transmission / reception unit 151, and the other vehicle V2 is outside the display range 50 of the 1/2500 scale electronic map EM. Existing.

In this case, as in the example shown in FIG. 5B, the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position on the 1/2500 scale electronic map EM displayed on the display 2. However, the mark indicating the current position of the other vehicle V2 is not displayed.

In FIG. 6A, which shows a situation slightly after the situation shown in FIG. 5A, the vehicle V1 is slightly above the position shown in FIG. 5A on the road R1. It shows a situation in which the other vehicle V2 is traveling toward the upper center and the other vehicle V2 is traveling on the right side of the figure toward the right side of the figure slightly from the position shown in FIG. 5 (a) of the road R2. .. In the situation shown in FIG. 6A, the own vehicle V1 receives the information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists outside the display range 50 of the 1/2500 scale electronic map EM. At the time shown in FIG. 6A, the scale of the electronic map EM is changed from 1/2500 scale to 1/10000 scale, which is the first scale at which the current position of the other vehicle V2 becomes the display range 50, by the change unit 103. By doing so, the display range 50 is expanded. Then, the graphic controller 13 was controlled by the display control unit 104, and the display range 50 was changed from the original display range 50 to the display range 50 after the scale change (changed from 1/2500 scale to 1/10000 scale). ) The current position of another vehicle V2 is drawn on the electronic map EM.

In this case, as shown in the example shown in FIG. 6B, the display range 50 displayed on the display 2 is changed from the original display range 50 to the display range 50 after the scale change (from the scale of 1/2500). On the electronic map EM (changed to 1/10000 scale), the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position, and the mark M2 indicating the current position of the other vehicle V2 is displayed. To.

Further, in FIG. 7 (a) showing a situation different from the situation shown in FIGS. 5 (a) and 6 (a), the own vehicle V1 is traveling on the road R1 toward the upper side in the figure, and is also shown. The situation where the other vehicle V2 is traveling on the road R2 toward the right side in the figure is shown. In the situation shown in FIG. 7A, the own vehicle V1 receives the information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists within the display range 50 of the electronic map EM at 1/2500 scale. At the time shown in FIG. 7A, the graphic controller 13 is controlled by the display control unit 104, and the current position of the other vehicle V2 is drawn on the electronic map EM at 1/2500 scale.

In this case, as in the example shown in FIG. 7B, the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position on the 1/2500 scale electronic map EM displayed on the display 2. At the same time, the mark M2 indicating the current position of the other vehicle V2 is displayed.

In FIG. 8A, which shows a situation slightly later than the situation shown in FIG. 7A, the own vehicle V1 stops at a position substantially the same as the position shown in FIG. 7A on the road R1. At the same time, the other vehicle V2 is traveling on the right side of the figure toward the right side of the figure slightly from the position shown in FIG. 7A of the road R2. In the situation shown in FIG. 8A, the own vehicle V1 receives the information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists outside the display range 50 of the 1/2500 scale electronic map EM. At the time shown in FIG. 8A, the scale of the electronic map EM is changed from 1/2500 to 1/5000, which is the first scale in which the current position of the other vehicle V2 becomes the display range 50, by the change unit 103. By doing so, the display range 50 is expanded. Then, the graphic controller 13 was controlled by the display control unit 104, and the display range 50 was changed from the original display range 50 to the display range 50 after the scale change (changed from 1/2500 scale to 1/5000 scale). ) The current position of another vehicle V2 is drawn on the electronic map EM.

In this case, as shown in the example shown in FIG. 8B, the display range 50 displayed on the display 2 is changed from the original display range 50 to the display range 50 after the scale change (from the scale of 1/2500). On the electronic map EM (changed to 1/5000 scale), the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position, and the mark M2 indicating the current position of the other vehicle V2 is displayed. To.

9 and 10 are flowcharts showing an example of a control procedure of a navigation method executed by the CPU 11 in the in-vehicle device 100 of the own vehicle V1 by the navigation program stored in the storage device 12 in order to realize the above method. In addition, in these FIGS. 9 and 10, in order to avoid the complexity of the illustration and facilitate understanding, a case where there is one other vehicle V2 will be described. However, when there are a plurality of other vehicles V2, it can be applied by executing the process described below for each other vehicle V2.

In FIGS. 9 and 10, the process shown in this flow is started, for example, when the power of the in-vehicle device 100 of the own vehicle V1 is turned on (in other words, when the engine of the own vehicle V1 is turned on).

First, in step S5, the CPU 11 sets the scale of the electronic map EM to a predetermined or desired scale among a plurality of scales prepared in advance.

Then, in step S10, the CPU 11 controls the graphic controller 13, and the current position of the own vehicle V1 is substantially determined based on the position information of the own vehicle V1 input from the GPS 8 and the map information stored in the storage medium 12c. Draw the electronic map EM at the scale set in step S5 above (however, if the scale of the electronic map EM has been changed by the user's manual operation, the scale after the change) so as to be the center position. At the same time, the current position of the own vehicle V1 is drawn on the electronic map EM and displayed on the display 2. The process of step S10 is repeated at predetermined time intervals.

After that, in step S20, in the CPU 11, the information (including at least the vehicle ID and the position information) transmitted from the transmission / reception unit 241 in the other vehicle V2 via wireless communication is the function of the transmission / reception unit 141 of the wireless communication control unit 14. Is received via wireless communication, and it is determined whether or not the information is input from the wireless communication control unit 14. Until the information from the other vehicle V2 is input from the wireless communication control unit 14, the determination in step S20 is not satisfied (S20: NO), and the loop standby is performed. When the information from the other vehicle V2 is input from the wireless communication control unit 14, the determination in step S20 is satisfied (S20: YES), and the process proceeds to step S40.

In step S40, the CPU 11 determines whether or not the same vehicle ID as the vehicle ID included in the information input in step S20 is stored in the RAM 12b, so that the information is received from the other vehicle V2. Determines if is the first. If the same vehicle ID as the vehicle ID included in the information input in step S20 is not stored in the RAM 12b, it is considered that the information is first received from the other vehicle V2, and in step S40. When the determination is satisfied (S40: YES), the process proceeds to step S50.

In step S50, the CPU 11 acquires the vehicle ID and position information of the other vehicle V2 from the information input in step S20 by the function of the acquisition unit 102.

Then, in step S60, the CPU 11 newly records the vehicle ID and the position information acquired in step S50 in the RAM 12b.

After that, the process proceeds to step S70, and the CPU 11 acquires the position information newly recorded in step S60 from the RAM 12b.

Then, in step S80, the CPU 11 determines whether or not the current position of the other vehicle V2 based on the position information acquired in step S70 is within the display range 50. When the current position of the other vehicle V2 is within the display range 50, the determination in step S80 is satisfied (S80: YES), and the process proceeds to step S100. On the other hand, when the current position of the other vehicle V2 is outside the display range 50, the determination in step S80 is not satisfied (S80: NO), the process proceeds to step S90, and the CPU 11 uses the function of the change unit 103 to move to the electronic map EM. The display range 50 is changed to the smallest scale in which the current position of the other vehicle V2 based on the position information acquired in step S70 is within the display range 50 among the plurality of scales prepared in advance. After expanding, the process proceeds to step S100.

In step S100 when the transition from step S80 is performed, the CPU 11 controls the graphic controller 13 by the function of the display control unit 104, and the scale set in step S5 is based on the position information acquired in step S70. (However, if the scale of the electronic map EM has been changed by the user's manual operation, the scale after the change) The current position of the other vehicle V2 is drawn on the electronic map EM and displayed on the display 2. .. After that, the process returns to step S20 and the same procedure is repeated. On the other hand, in step S100 when shifting from step S90, the CPU 11 controls the graphic controller 13 by the function of the display control unit 104, and based on the position information acquired in step S70, the display range in step S90. 50 is changed from the original display range 50 to the display range 50 after the scale change. The current position of the other vehicle V2 is drawn on the electronic map EM (at the scale set in step S90 above) and displayed on the display 2. .. After that, the process returns to step S20 and the same procedure is repeated.

On the other hand, in step S40, when the same vehicle ID as the vehicle ID included in the information input in step S20 is stored in the RAM 12b, the information is received from the other vehicle V2 from the second time onward. The determination in step S40 is not satisfied (S40: NO), and the process proceeds to step S110.

In step S110, the CPU 11 acquires the position information of the other vehicle V2 from the information input in step S20 by the function of the acquisition unit 102.

After that, the process proceeds to step S120, and the CPU 11 additionally records the position information acquired in step S110 in the RAM 12b.

Then, in step S130, the CPU 11 acquires the latest position information from the RAM 12b.

After that, the process proceeds to step S140, and the CPU 11 determines whether or not the current position of the other vehicle V2 based on the position information acquired in step S130 is within the display range 50. When the current position of the other vehicle V2 is within the display range 50, the determination in step S140 is satisfied (S140: YES), and the process proceeds to step S160. On the other hand, when the current position of the other vehicle V2 is outside the display range 50, the determination in step S140 is not satisfied (S140: NO), the process proceeds to step S150, and the CPU 11 uses the function of the change unit 103 to move to the electronic map EM. By changing the scale of the other vehicle V2 to the smallest scale within the display range 50 based on the position information acquired in step S130, among the plurality of scales prepared in advance, the display range 50 After expanding, the process proceeds to step S160.

In step S160 when the transition from step S140 is performed, the CPU 11 controls the graphic controller 13 by the function of the display control unit 104, and the scale set in step S5 is based on the position information acquired in step S130. (However, if the scale of the electronic map EM has been changed by the user's manual operation, the scale after the change) The current position of the other vehicle V2 is drawn on the electronic map EM and displayed on the display 2. .. After that, the process returns to step S20 and the same procedure is repeated. On the other hand, in step S100 when shifting from step S150, the CPU 11 controls the graphic controller 13 by the function of the display control unit 104, and based on the position information acquired in step S130, the display range 50 in step S150. Is changed from the original display range 50 to the display range 50 after the scale change. The current position of the other vehicle V2 is drawn on the electronic map EM (at the scale set in step S150 above) and displayed on the display 2. After that, the process returns to step S20 and the same procedure is repeated.

The process shown in this flow is terminated, for example, when the power supply of the in-vehicle device 100 of the own vehicle V1 is turned off (in other words, when the engine of the own vehicle V1 is turned off).

Further, in FIGS. 9 and 10 described above, the procedures of steps S50 and S110 correspond to the acquisition procedure. Further, the procedures of steps S100 and S160 correspond to the display control procedure. Further, the procedures of steps S90 and S150 correspond to the change procedure.

As described above, the in-vehicle device 100 (corresponding to the navigation device) of the present embodiment is an acquisition unit that acquires the position information of another vehicle V2 (corresponding to another mobile body) from the information received via wireless communication. Display 2 (corresponding to the display means) so that the current position of the other vehicle V2 is displayed on the electronic map EM (corresponding to the map) based on the position information acquired by the acquisition unit 102 and 102 (corresponding to the acquisition means). ), And the current position of the other vehicle V2 is outside the display range 50 of the electronic map EM by the display 2 when the current position of the other vehicle V2 is outside the display range 50 of the display control unit 104 (corresponding to the display control means). It has a changing unit 103 (corresponding to a changing means) that changes the display range 50 so as to be inside.

Further, the navigation method of the present embodiment is based on a procedure of acquiring the position information of another vehicle V2 (corresponding to another moving body) from the information received via wireless communication and the acquired position information of the other vehicle. The procedure for displaying and controlling the display so that the current position of V2 is displayed on the electronic map EM (corresponding to the map), and the current position of the other vehicle V2 is outside the display range 50 of the electronic map EM by the display 2 (corresponding to the display means). There is a procedure for changing the display range 50 so that the current position of the other vehicle V2 is within the display range 50.

Further, the navigation program of the present embodiment acquires the position information of the other vehicle V2 (corresponding to another moving body) from the information received via wireless communication, and the other vehicle based on the acquired position information. The procedure for displaying and controlling the display so that the current position of V2 is displayed on the electronic map EM (corresponding to the map), and the current position of the other vehicle V2 is outside the display range 50 of the electronic map EM by the display 2 (corresponding to the display means). In the case of, the CPU 11 (corresponding to a computer) executes the procedure of changing the display range 50 so that the current position of the other vehicle V2 is within the display range 50.

In the present embodiment, under the control of the display control unit 104, the current position of the other vehicle V2 based on the position information acquired by the acquisition unit 102 is displayed on the electronic map EM displayed on the display 2. As a result, the user can visually recognize the existence of the other vehicle V2 and its current position within the display range 50 of the electronic map EM by the display 2.

Here, for example, when the display range 50 is set narrower than the communicable range, or when the display range 50 is set to be the same as or wider than the communicable range, the communication status improves and the communicable range is improved. When is wider than the display range 50, information can be received from another vehicle V2 whose current position is outside the display range 50 and which exists at a relatively distant position of the user. The current position of another vehicle V2, whose current position is outside the display range 50 and exists at a relatively distant position of the user, is not displayed on the electronic map EM displayed on the display 2.

By the way, for example, in order to support safe driving to notify whether or not vehicles come into contact with each other, it is sufficient to provide the user with the existence of another vehicle V2 existing at a relatively close position to the user and the current position thereof. The other vehicle V2, which is outside the display range 50 and exists at a relatively distant position of the user, may not be displayed on the electronic map EM displayed on the display 2. However, for example, if you are aware in advance whether there are emergency vehicles, construction vehicles, vehicles driven by beginners or elderly people, etc., it will be useful for driving in the sense of preventive or advance avoidance, and other than safe driving support. If you want to know whether another vehicle V2 such as a vehicle of the user's family / acquaintance or a vehicle registered in advance by the user exists in the vicinity for the purpose, the current position is outside the display range 50, that is, the comparison of the users. Even if it exists at a distant position, it is very convenient if the existence and its current position can be provided to the user. In addition, if the presence of another vehicle V2 that exists relatively close to the user cannot be displayed depending on the scale, such as when the scale of the electronic map EM is enlarged and displayed, the above-mentioned safe driving support is provided. It would be very convenient if the existence and its current position could be provided to the user.

Therefore, in the present embodiment, when the current position of the other vehicle V2 is outside the display range 50, that is, when the other vehicle V2 exists at a relatively distant position of the user, the changing unit 103 changes the current position of the other vehicle V2. The display range 50 is automatically changed so that it is within the display range 50. As a result, the current position of another vehicle V2 existing at a relatively distant position of the user whose current position is outside the original display range 50 is displayed on the electronic map EM in which the display range 50 displayed on the display 2 is changed. Can be displayed automatically. As a result, the user can visually recognize the existence of another vehicle V2 existing at a relatively distant position and the current position thereof without performing any particular operation, so that the convenience of the user can be improved.

Further, in the in-vehicle device 100, the changing unit 103 expands the display range 50 by reducing the scale of the electronic map EM so that the current position of the other vehicle V2 is within the display range 50.

By enlarging the display range 50 by reducing the scale of the electronic map EM, the current position of the other vehicle V2, which could not be displayed on the electronic map EM in the original display range 50, can be displayed on the electronic map EM. It can be displayed on the map EM, and the convenience of the user can be surely improved. In consideration of the case where the positional relationship with another vehicle V2 in the immediate vicinity of the own vehicle V1 becomes difficult to see due to the scale being made too small, a lower limit of the scale that can be changed when the scale is reduced may be set. .. In this case, all other vehicles V2 may not be displayed even at the lower limit scale, but in that case, it is also possible to select the scale that most appropriately displays all other vehicles V2 that can be displayed at the lower limit scale. Good.

Further, in the in-vehicle device 100, the changing unit 103 changes the display range 50 when the current position of the other vehicle V2 within the display range 50 is outside the display range 50.

In the present embodiment, the current position of the other vehicle V2 is within the display range 50, and the other vehicle V2 existing at a relatively close position to the user moves to a relatively distant position, so that the current position of the other vehicle V2 is displayed in the display range 50. When it goes out, the changing unit 103 automatically changes the display range 50 so that the current position of the other vehicle V2 is within the display range 50. As a result, the current position of the other vehicle V2, whose current position has moved from the original display range 50 to the outside of the display range 50 and has moved from a relatively close position to a position far from the user, is displayed on the display 2. Can be automatically displayed on the modified electronic map EM. As a result, the user can visually recognize the current position of the other vehicle V2 that has moved from a relatively close position to a relatively distant position without any particular operation, so that the user loses sight of the other vehicle V2. Can be suppressed, and the convenience of the user can be further improved.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit and technical idea. Hereinafter, such modification examples will be sequentially described.

(1) When scrolling the display range In the above embodiment, the changing unit 103 expands the display range 50 by reducing the scale of the electronic map EM so that the current position of the other vehicle V2 is within the display range 50. However, the present invention is not limited to this, and the display range 50 may be scrolled so that the current position of the other vehicle V2 is within the display range 50.

In this modification, the current position based on the position information acquired by the acquisition unit 102 is outside the display range 50 of the electronic map EM by the display 2 among the other vehicles V2 for which the information is received by the transmission / reception unit 151. When the vehicle V2 is included, the scale of the electronic map EM remains unchanged so that the change unit 103 keeps the current position within the display range 50 for all the other vehicles V2 for which the information is received by the transmission / reception unit 151. Scroll (corresponds to change) the display range 50 with. The changing unit 103 may scroll the display range 50 while increasing the scale of the electronic map EM. However, in the following, for convenience of explanation, a case where the changing unit 103 scrolls the display range 50 while keeping the scale of the electronic map EM will be described. Hereinafter, the display range 50 before being scrolled by the changing unit 103 is referred to as "original display range 50", and the display range 50 after being scrolled by the changing unit 103 is referred to as "display range 50 after scrolling". Then, the display control unit 104 controls the graphic controller 13, and the display range 50 scrolls from the original display range 50 based on the acquired position information for all the other vehicles V2 for which the information is received by the transmission / reception unit 151. The current position is drawn on the electronic map EM changed to the later display range 50 (the display range 50 is scrolled) and displayed on the display 2.

11 to 14 are explanatory views showing the transition of the display contents of the display 2 of the own vehicle V1 as the own vehicle V1 and the other vehicle V2 move, and are the views corresponding to the above-mentioned FIGS. 5 to 8. ..

In FIG. 11A, the own vehicle V1 is traveling on the road R3 along the vertical direction in the figure toward the upper side in the figure, and the other vehicle V2 intersects the road R3. Shows the situation of traveling toward the right side in the figure. In the situation shown in FIG. 11A, the own vehicle V1 has not received information from the other vehicle V2 by the transmission / reception unit 151, and the other vehicle V2 is outside the display range 50 of the 1/2500 scale electronic map EM. Existing.

In this case, as in the example shown in FIG. 11B, the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position on the 1/2500 scale electronic map EM displayed on the display 2. However, the mark indicating the current position of the other vehicle V2 is not displayed.

In FIG. 12A, which shows a situation slightly after the situation shown in FIG. 11A, the vehicle V1 is slightly above the position shown in FIG. 11A on the road R3. It shows a situation in which the other vehicle V2 is traveling toward the upper center and the other vehicle V2 is traveling on the right side of the figure toward the right side of the figure slightly from the position shown in FIG. 11A of the road R2. .. In the situation shown in FIG. 12A, the own vehicle V1 receives information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists outside the display range 50 of the 1/2500 scale electronic map EM. At the time shown in FIG. 12A, the display range 50 is scrolled by the change unit 103 so that the current position of the other vehicle V2 is within the display range 50. Then, the graphic controller 13 is controlled by the display control unit 104, and the current display range 50 of the other vehicle V2 is displayed on the 1/2500 scale electronic map EM in which the display range 50 is changed from the original display range 50 to the scrolled display range 50. The position is drawn.

In this case, as shown in the example shown in FIG. 12B, the 1/2500 scale electronic map EM displayed on the display 2 in which the display range 50 is changed from the original display range 50 to the scrolled display range 50. A mark M1 indicating the current position of the own vehicle V1 is displayed above, and a mark M2 indicating the current position of the other vehicle V2 is displayed.

Further, in FIG. 13 (a) showing a situation different from the situation shown in FIGS. 11 (a) and 12 (a) above, the own vehicle V1 is traveling on the road R3 toward the upper side in the figure, and is also shown. The situation where the other vehicle V2 is traveling on the road R2 toward the left side in the figure is shown. In the situation shown in FIG. 13A, the own vehicle V1 receives the information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists within the display range 50 of the electronic map EM at 1/2500 scale. At the time shown in FIG. 13A, the graphic controller 13 is controlled by the display control unit 104, and the current position of the other vehicle V2 is drawn on the electronic map EM at 1/2500 scale.

In this case, as in the example shown in FIG. 13B, the mark M1 indicating the current position of the own vehicle V1 is displayed at the substantially center position on the 1/2500 scale electronic map EM displayed on the display 2. At the same time, the mark M2 indicating the current position of the other vehicle V2 is displayed.

In FIG. 14 (a), which shows a situation slightly after the situation shown in FIG. 13 (a), the own vehicle V1 stops at a position substantially the same as the position shown in FIG. 13 (a) on the road R3. At the same time, the other vehicle V2 is traveling on the left side of the figure toward the left side of the figure slightly from the position shown in FIG. 13 (a) of the road R2. In the situation shown in FIG. 14A, the own vehicle V1 receives the information from the other vehicle V2 by the transmission / reception unit 151, and the acquisition unit 102 acquires the position information of the other vehicle V2, and the other vehicle. V2 exists outside the display range 50 of the 1/2500 scale electronic map EM. At the time shown in FIG. 14A, the display range 50 is scrolled by the change unit 103 so that the current position of the other vehicle V2 is within the display range 50. Then, the graphic controller 13 is controlled by the display control unit 104, and the current display range 50 of the other vehicle V2 is displayed on the 1/2500 scale electronic map EM in which the display range 50 is changed from the original display range 50 to the scrolled display range 50. The position is drawn.

In this case, as in the example shown in FIG. 14B, the 1/2500 scale electronic map EM displayed on the display 2 in which the display range 50 is changed from the original display range 50 to the scrolled display range 50. A mark M1 indicating the current position of the own vehicle V1 is displayed above, and a mark M2 indicating the current position of the other vehicle V2 is displayed.

As described above, in the in-vehicle device 100 of the present modification, the changing unit 103 scrolls the display range 50 so that the current position of the other vehicle V2 is within the display range 50.

By scrolling the display range 50, the current position of another vehicle V2, which could not be displayed on the electronic map EM in the original display range 50, can be displayed on the electronic map EM in which the display range 50 is scrolled, which is convenient for the user. You can definitely improve your sex.

The display range 50 may be set more appropriately by both changing the scale described above and scrolling described here.

(2) When returning to the original display mode after a lapse of a predetermined time That is, as shown in FIG. 15 corresponding to FIG. 4 described above, in this modification, the control unit 10 in the in-vehicle device 100 is the acquisition unit 102 and the change unit. A 103, a display control unit 104, and a return unit 105 are provided.

The acquisition unit 102, the change unit 103, and the display control unit 104 have the same functions as those described in the above embodiment.

As described above, the restoration unit 105 (corresponding to the restoration means) has the display range 50 expanded by the change unit 103, and the display 2 has changed the scale of all the other vehicles V2 for which the information has been received by the transmission / reception unit 151. When a predetermined time (for example, 5 seconds) has elapsed (corresponding to the case where a predetermined condition is satisfied) after the current position is displayed on the electronic map EM changed to the display range 50 of the electronic map EM. The display range 50 is reduced and the display mode of the display range 50 is restored by returning the scale to the scale before being changed by the changing unit 103 (a scale larger than the scale at this point).

As described above, in the in-vehicle device 100 of the present modification, after the current position of the other vehicle V2 is displayed on the electronic map EM whose display range 50 is changed by the change unit 103 on the display 2, a predetermined position is determined. Further, it has a restoring unit 105 (corresponding to a restoring means) that restores the display mode of the display range 50 when the conditions are satisfied.

After changing the display range 50, when a predetermined condition is satisfied, the display mode is automatically returned to the original display range 50, so that the user does not have to bother to return to the original display mode of the display range 50. Therefore, the operation load on the user can be reduced, and the convenience of the user can be further improved.

Further, in the in-vehicle device 100, a predetermined time elapses after the restoration unit 105 is displayed on the electronic map EM in which the display range 50 is changed by the change unit 103 at the current position of the other vehicle V2 on the display 2. If so, the display mode of the display range 50 is restored.

By automatically returning to the original display mode of the display range 50 after a predetermined time has elapsed after changing the display range 50, the user does not have to bother to return to the original display mode of the display range 50. The burden can be reduced and the convenience of the user can be further improved.

In the above, the change unit 103 has the same function as the function described in the above embodiment, the display range 50 is expanded by the change unit 103, and the information is received by the transmission / reception unit 151 on the display 2. For all V2, the restoration unit 105 restores the display mode of the display range 50 when a predetermined time elapses after the current position is displayed on the electronic map EM changed to the display range 50 after the scale change. However, it is not limited to this. That is, the changing unit 103 has the same function as the function described in the modified example of (1) above, the display range 50 is scrolled by the changing unit 103, and information is received by the transmitting / receiving unit 151 by the display 2. For all of the vehicle V2, when a predetermined time elapses after the current position is displayed on the electronic map EM changed to the display range 50 after scrolling, the restoration unit 105 displays the display range 50 of the own vehicle V1. The display mode of the display range 50 may be restored by returning the current position to a range in which the current position is substantially the center position. In this case as well, the same effect as described above is obtained. In the above case, the restoration unit 105 scrolls when the current position of the own vehicle V1 is not displayed in the display range 50 after scrolling, or the current position is displayed in the original display range 50. The restoration of the display range 50 may be performed only when there is another vehicle V2 whose current position is no longer displayed in the display range 50 later.

(3) When returning to the original display mode after the user visually recognizes That is, in this modified example, the display range 50 of the restoration unit 105 is expanded by the change unit 103 as described above, and the display 2 displays the display 2 and the transmission / reception unit 151. For all other vehicles V2 for which information was received, after the current position is displayed on the electronic map EM changed to the display range 50 after the scale change (for example, by a method such as detecting the user's line of sight), the other vehicle When the current position of V2 is visually recognized by the user (corresponding to the case where a predetermined condition is satisfied), the scale of the electronic map EM is changed to the scale before being changed by the changing unit 103 (larger than the scale at this time). By returning to the scale), the display range 50 is reduced and the display mode of the display range 50 is restored.

As described above, in the in-vehicle device 100 of the present modification, the restoration unit 105 is displayed on the electronic map EM in which the current position of the other vehicle V2 is changed by the change unit 103 and the display range 50 is changed by the display 2. After that, when the current position of the other vehicle V2 is visually recognized by the user, the display mode of the display range 50 is restored.

After changing the display range 50, when the current position of the other vehicle V2 is visually recognized by the user, the user automatically returns to the original display mode of the display range 50, so that the user bothers to return to the original display mode of the display range 50. Since it is not necessary to perform the operation, the operation load on the user can be reduced, and the convenience of the user can be further improved.

In the above, the change unit 103 has the same function as the function described in the above embodiment, the display range 50 is expanded by the change unit 103, and the information is received by the transmission / reception unit 151 on the display 2. For all V2, after the current position is displayed on the electronic map EM changed to the display range 50 after the scale change, when the current position of another vehicle V2 is visually recognized by the user, the restoration unit 105 displays the display range 50. The display mode of was restored, but it is not limited to this. That is, the changing unit 103 has the same function as the function described in the modified example of (1) above, the display range 50 is scrolled by the changing unit 103, and information is received by the transmitting / receiving unit 151 by the display 2. When the current position of the other vehicle V2 is visually recognized by the user after the current position is displayed on the electronic map EM changed to the display range 50 after scrolling for all the vehicle V2, the restoration unit 105 displays the display range. The display mode of the display range 50 may be restored by returning the 50 to a range in which the current position of the own vehicle V1 is substantially the center position. In this case as well, the same effect as described above is obtained. In the above case, the restoration unit 105 scrolls when the current position of the own vehicle V1 is not displayed in the display range 50 after scrolling, or the current position is displayed in the original display range 50. The restoration of the display range 50 may be performed only when there is another vehicle V2 whose current position is no longer displayed in the display range 50 later.

(4) When returning to the original display mode when it becomes possible to display in the original display mode In other words, in this modification, the display range 50 of the restoration unit 105 is expanded by the change unit 103 as described above, and the display is displayed. With respect to all the other vehicles V2 for which the information was received by the transmission / reception unit 151, the current position of the other vehicle V2 is changed after the current position is displayed on the electronic map EM changed to the display range 50 after the scale change. When the display range 50 is reached within the display range 50 (when the scale of the electronic map EM is the scale before the change by the change unit 103) in the display mode before the display range 50 is expanded by the change unit 103 (predetermined). The scale of the electronic map EM is changed to the scale before being changed by the changing unit 103 (at this point) when the display mode of the original display range 50 can be displayed. By returning to a scale larger than the scale), the display range 50 is reduced and the display mode of the display range 50 is restored.

As described above, in the in-vehicle device 100 of the present modification, the restoration unit 105 is displayed on the electronic map EM in which the current position of the other vehicle V2 is changed by the change unit 103 and the display range 50 is changed by the display 2. After that, when the current position of the other vehicle V2 reaches within the display mode 50 in the display mode before the display range 50 is changed by the change unit 103, the display mode of the display range 50 is restored.

After changing the display range 50, when the current position of the other vehicle V2 reaches within the display range 50 in the original display mode, that is, when it becomes possible to display in the original display mode, the original display range 50 is automatically displayed. By returning to the mode, the user does not have to bother to return to the display mode of the original display range 50, so that the operation burden on the user can be reduced and the convenience of the user can be further improved.

In the above, the change unit 103 has the same function as the function described in the above embodiment, the display range 50 is expanded by the change unit 103, and the information is received by the transmission / reception unit 151 on the display 2. For all V2, after the current position is displayed on the electronic map EM changed to the display range 50 after the scale change, the current position of the other vehicle V2 is displayed before the display range 50 is expanded by the change unit 103. When the display mode 50 is reached, the restoration unit 105 restores the display mode of the display range 50, but the present invention is not limited to this. That is, the change unit 103 has the same function as the function described in the modified example of (1) above, the display range 50 is scrolled by the change unit 103, and information is received by the transmission / reception unit 151 by the display 2. For all vehicle V2, after the current position is displayed on the electronic map EM changed to the scrolled display range 50, the current position of the other vehicle V2 is displayed before the display range 50 is scrolled by the change unit 103. When it reaches the display mode 50 in the mode, the restoration unit 105 restores the display mode of the display range 50 by returning the display range 50 to a range in which the current position of the own vehicle V1 is substantially the center position. You may. In this case as well, the same effect as described above is obtained. In the above case, the restoration unit 105 may return the display range 50 to a range in which the current position of the own vehicle V1 is substantially the center position, or may return it moment by moment. Further, when the current position of the own vehicle V1 is not displayed in the display range 50 after scrolling, or when the current position is displayed in the original display range 50, the restoration unit 105 displays the display range 50 after scrolling. Then, the display range 50 may be restored only when there is another vehicle V2 whose current position is no longer displayed.

(5) When the display range is changed when the change of the display range is approved That is, as shown in FIG. 16 corresponding to FIG. 4 described above, in this modification, the control unit 10 in the in-vehicle device 100 is the acquisition unit 102. , Operation reception unit 106, change unit 103, and display control unit 104.

The acquisition unit 102 has the same function as the function described in the above embodiment.

In this modification, in the other vehicle V2 for which the information is received by the transmission / reception unit 151, the current position based on the position information acquired by the acquisition unit 102 is outside the display range 50 of the electronic map EM by the display 2. When the vehicle V2 is included, the CPU 11 notifies the user by voice from a speaker (not shown, corresponding to the notification means) provided in the own vehicle V1. The CPU 11 may notify the user of the above by displaying the above effect on the display 2 in characters or the like. In this case, the display 2 corresponds to the notification means. Alternatively, the CPU 11 may perform both the notification by voice from the speaker and the notification by displaying characters and the like on the display 2. In this case, the speaker and the display 2 correspond to the notification means. However, in this modification, for convenience of explanation, a case where the CPU 11 notifies the user of the above by voice from the speaker will be described.

The operation reception unit 106 (corresponding to the operation reception means) performs a user selection operation on whether or not to approve the change of the display range 50 by the change unit 103 after the speaker notifies the above. It is received via an operation unit (not shown, for example, an operation button or an operation panel provided on the vehicle-mounted device 100) provided in the vehicle.

When the operation receiving unit 106 accepts the operation of accepting the change of the display range 50, the changing unit 103 expands the display range 50 as in the above embodiment. Alternatively, the changing unit 103 may scroll the display range 50 as in the modification of (1) above. However, in this modification, for convenience of explanation, a case where the change unit 103 expands the display range 50 as in the above embodiment will be described.

The display control unit 104 has the same function as the function described in the above embodiment.

As described above, in the in-vehicle device 100 of the present modification, when the current position of the other vehicle V2 is outside the display range 50, it is notified by the speaker (corresponding to the notification means) and the speaker. After that, the change unit 103 further includes an operation reception unit 106 (corresponding to an operation reception means) that accepts a user's selection operation for whether or not to approve the change of the display range 50 by the change unit 103, and the change unit 103 operates. When the reception unit 106 accepts the operation of accepting the change of the display range 50, the display range is changed.

By letting the user select whether or not to change the display range 50 each time, it is possible to suppress the change of the display range 50 even when the user does not want it, and the convenience of the user can be further improved. ..

(6) When the display range is changed when the vehicle registered in advance is outside the display range That is, in this modification, the storage medium 12c of the storage device 12 of the in-vehicle device 100 has the display range 50 of the change unit 103 in advance. Other vehicles V2 (for example, vehicles of family members and acquaintances) or their types (for example, vehicles of beginner drivers, vehicles of elderly drivers, emergency vehicles, construction vehicles, etc.) to be changed are registered.

Further, in this modification, the transmission / reception unit 241 of the wireless communication control unit 24 of the in-vehicle device 200 of the other vehicle V2 has the vehicle ID and position information of the other vehicle V2, as well as other vehicle-related information (movement) related to the other vehicle V2. Information including (corresponding to body-related information) is transmitted intermittently via wireless communication. Other vehicle-related information includes, for example, identification information of another vehicle V2 (for example, a registration number written on a license plate), information that the other vehicle V2 is a beginner driver's vehicle, and another vehicle V2 is an elderly driver. Information that the other vehicle V2 is an emergency vehicle, information that the other vehicle V2 is a construction vehicle, and the like can be mentioned.

Further, as shown in FIG. 17 corresponding to FIG. 4 described above, in this modification, the transmission / reception unit 141 of the wireless communication control unit 14 in the in-vehicle device 100 is intermittent from the transmission / reception unit 241 in one or more other vehicles V2. Information including the vehicle ID, position information, and other vehicle-related information transmitted to the user is intermittently received via wireless communication.

Further, in this modification, the control unit 10 in the in-vehicle device 100 includes an acquisition unit 102, a determination unit 107, a change unit 103, and a display control unit 104.

The acquisition unit 102 acquires the position information of the other vehicle V2 and the other vehicle-related information related to the other vehicle V2 from the information received by the transmission / reception unit 141.

The determination unit 107 (corresponding to the determination means) uses the other vehicle-related information acquired by the acquisition unit 102 to specify that the other vehicle V2 or its type whose information is received by the transmission / reception unit 151 is registered in the storage medium 12c. It is determined whether or not it is another vehicle V2 or a specific type (corresponding to satisfying a predetermined condition). For example, when a vehicle of a family member or a friend is registered in the recording medium 12c, the determination unit 107 receives the information by the transmission / reception unit 151 included in the other vehicle-related information acquired by the acquisition unit 102. By determining whether or not the identification information of the vehicle V2 matches the identification information of the vehicle of the family or friend registered in the storage medium 12c, whether or not the other vehicle V2 is a vehicle of the family or friend is determined. You just have to judge. Further, for example, when an emergency vehicle is registered in the recording medium 12c, the determination unit 107 makes an emergency for the other vehicle V2 for which the information is received by the transmission / reception unit 151 in the other vehicle-related information acquired by the acquisition unit 102. By determining whether or not the information indicating that the vehicle is a vehicle is included, it may be determined whether or not the other vehicle V2 is an emergency vehicle.

When the current position of the specific other vehicle V2 or the other vehicle V2 determined to be of a specific type by the determination unit 107 is outside the display range 50, the change unit 103 has the display range 50 as in the above embodiment. To expand. Alternatively, the changing unit 103 may scroll the display range 50 as in the modification of (1) above. However, in this modification, for convenience of explanation, a case where the change unit 103 expands the display range 50 as in the above embodiment will be described.

The display control unit 104 has the same function as the function described in the above embodiment. The display control unit 104 may change the display mode of the current position to be displayed on the electronic map EM according to the type of the other vehicle V2.

As described above, in the in-vehicle device 100 of the present modification, the acquisition unit 102 can acquire other vehicle-related information (corresponding to mobile object-related information) related to the other vehicle V2 in addition to the position information from the information. In addition, it further has a determination unit 107 (corresponding to a determination means) for determining whether or not a predetermined condition is satisfied with respect to the other vehicle V2 by using the other vehicle-related information acquired by the acquisition unit 102, and the change unit 103. Changes the display range 50 when the current position of the other vehicle V2 determined by the determination unit 107 to satisfy the predetermined condition is outside the display range 50.

As a result, the display range 50 is changed only for the other vehicle V2 that satisfies the predetermined condition, so that it is possible to suppress the change of the display range 50 even for the other vehicle V2 that does not satisfy the predetermined condition.

Further, the in-vehicle device 100 further has a storage medium 12c (corresponding to the registration means) for registering another vehicle V2 or its type to be changed in the display range 50 by the change unit 103 in advance, and the determination unit 107 , The other vehicle V2 or its type is determined whether or not it is a specific other vehicle V2 or a specific type registered in the storage medium 12, and the changing unit 103 determines whether the other vehicle V2 or its type is a specific other vehicle V2 or a specific type by the determination unit 107. When the current position of the other vehicle V2 determined to be the type is outside the display range 50, the display range 50 is changed.

As a result, the display range 50 is changed only for the other vehicle V2 or type that the user wants to change the display range 50, so that the display range 50 is changed even for the other vehicle V2 or type that does not want to change the display range 50. Can be suppressed.

(7) Others In the above, the case where the in-vehicle device 100 corresponding to the navigation device is mounted on the vehicle has been described as an example, but the navigation device is not limited to this, and the navigation device is a moving body other than the vehicle (for example, an aircraft or a ship, etc.). It may be held by humans, etc.) or equipment that does not move. In the above, the case where the position information of the vehicle is acquired and the current position is displayed has been described as an example, but the present invention is not limited to this, and a moving body other than the vehicle (for example, an aircraft, a ship, a human being, an animal other than a human being, etc.) The current position may be displayed by acquiring the position information of.

Further, the flowcharts shown in FIGS. 9 and 10 are not limited to the procedure for illustrating the present invention, and the procedure may be added / deleted or the order may be changed within a range that does not deviate from the purpose and technical idea. Good.

In addition to the above, the methods according to the above-described embodiment and each modification may be appropriately combined and used.

In addition, although not illustrated one by one, the present invention is carried out with various modifications within a range not deviating from the gist thereof.

2 Display (display means)
11 CPU (equivalent to a computer)
12c Storage medium (equivalent to registration means)
50 Display range 100 In-vehicle device (equivalent to navigation device)
102 Acquisition section (corresponding to acquisition means)
103 Change part (corresponding to change means)
104 Display control unit (corresponding to display control means)
105 Return part (corresponding to return means)
106 Operation reception unit (equivalent to operation reception means)
107 Judgment unit (corresponding to judgment means)
EM electronic map (equivalent to a map)
V2 Other vehicle (equivalent to other moving body)

Claims (6)

It is a display control device that displays the position of the self and the position of the other moving body on a map based on the self-position information indicating the position of the self and the position information of the other moving body indicating the position of another moving body. hand,
When the position of the other moving body is outside the display range of the map
Display control that changes the scale of the map and scrolls the display range so that the position of the self and the position of the other moving body are within the display range. A display control device comprising means. The display control device according to claim 1, wherein the control for changing the scale of the map is provided with an upper limit or a lower limit of the scale that can be changed. In the scrolling control in the display control means, the self-position and the position of the other moving body are within the display range by scrolling in the direction of the other moving body position with the scale fixed. The display control device according to claim 1 or 2, wherein the display is changed. Further equipped with specific processing means to identify other moving objects whose position should be displayed,
The display control device according to any one of claims 1 to 3, wherein the other moving body is a moving body specified by the specific processing means. Display control so that the position of the self and the position of the other moving body are displayed on the map based on the self-position information indicating the position of the self and the position information of the other moving body indicating the position of the other moving body. Display control procedure to be performed and
When the position of the other moving body is outside the display range of the map
A change procedure for changing the display so that the self-position and the position of the other moving object are within the display range by performing control for changing the scale of the map and control for scrolling the display range. When,
A display control method characterized by having. Display control so that the position of the self and the position of the other moving body are displayed on the map based on the self-position information indicating the position of the self and the position information of the other moving body indicating the position of the other moving body. Display control procedure to be performed and
When the position of the other moving body is outside the display range of the map
A change procedure for changing the display so that the self-position and the position of the other moving object are within the display range by performing control for changing the scale of the map and control for scrolling the display range. When,
A display control program characterized by having a computer execute.

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