JP2010271272A - On-vehicle map display, and vehicle control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress increase in processing load, even if the number of other vehicles to be displayed increases, in an on-vehicle map display that receives data from other vehicles through inter-vehicle communication and displays the positions of other vehicles predetermined based on the data. <P>SOLUTION: The on-vehicle map display displays a map (step S20), displays own- vehicle mark showing the position of the own vehicle (step S30), and displays an other-vehicle mark showing the position of other vehicle (step S140), based on the received position information of other vehicle; and when position information is transmitted from a plurality of other vehicles, an other-vehicle group mark collectively showing the positions of the plurality of other vehicles is displayed, in place of the other-vehicle mark (steps S120 and S130). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an in-vehicle map display device that is mounted on a vehicle and displays a map, and a vehicle control system having the in-vehicle map display device.

  2. Description of the Related Art Conventionally, an in-vehicle device that receives data from another vehicle by inter-vehicle communication and displays the position of the other vehicle specified based on the data on a map is known (see Patent Document 1).

JP 2005-141324 A

  Since the conventional in-vehicle device disclosed in Patent Document 1 displays all the positions of other vehicles capable of inter-vehicle communication on a map, there arises a problem that the processing load increases as the number of other vehicles to be displayed increases. .

A vehicle-mounted map display device according to a first aspect of the present invention is connected to a communication device that receives position information of another vehicle transmitted by communication, and a map display control unit that displays a map on a display monitor; The vehicle mark display control means for displaying the vehicle mark indicating the vehicle on the map, and the vehicle mark display for displaying the vehicle mark indicating the position of the other vehicle on the map based on the position information received by the communication device When the position information is transmitted from the control means and a plurality of other vehicles and received by the communication device, the other vehicle group mark that collectively indicates the positions of the plurality of other vehicles is displayed on the map instead of the other vehicle mark. And other vehicle group mark display control means.
In addition, a vehicle-mounted map display device according to a second aspect of the present invention is connected to a communication device that receives position information of another vehicle transmitted by communication, and displays a map on a display monitor. The vehicle mark display control means for displaying the vehicle mark indicating the position of the vehicle on the map, and the other vehicle for displaying the vehicle mark indicating the position of the other vehicle on the map based on the position information received by the communication device Mark display control means, and the other vehicle mark display control means does not display the other vehicle mark for other vehicles traveling in the direction facing the host vehicle.

  According to the present invention, an increase in processing load can be suppressed even if the number of other vehicles to be displayed increases.

1 is a configuration diagram of a vehicle control system according to an embodiment of the present invention. It is a block diagram of a navigation apparatus. It is a flowchart of the process at the time of displaying the own vehicle mark and other vehicle mark or other vehicle group mark on a map. It is a figure which shows the example of the map screen on which the own vehicle mark, the other vehicle mark, and the other vehicle group mark were displayed. It is a figure which shows the example of the other vehicle group mark which simulated the shape of the vehicle.

  FIG. 1 shows the configuration of a vehicle control system according to an embodiment of the present invention. This vehicle control system exchanges positional information of each other by inter-vehicle communication in which the own vehicle 1 and the other vehicle 2 are wirelessly communicated, thereby determining each other's running state, thereby allowing various vehicles as necessary. Control is performed. The host vehicle 1 includes a navigation device 10, a vehicle control device 11, a communication control device 12, and an antenna 13. Similarly, the other vehicle 2 includes a navigation device 20, a vehicle control device 21, a communication control device 22, and an antenna 23. Although only one other vehicle 2 is shown in FIG. 1, vehicle-to-vehicle communication is actually performed between a plurality of other vehicles 2 existing in the communication area and the host vehicle 1.

  The navigation device 10 displays a map within a predetermined range from the host vehicle 1 on a display monitor. At this time, the navigation device 10 displays the own vehicle mark indicating the position of the own vehicle 1 on the map, and indicates the position of the other vehicle 2 based on the other vehicle position information received by the communication control device 12. Display the car mark on the map. Further, when the other vehicle position information transmitted from the plurality of other vehicles 2 satisfies the conditions described later, the other vehicle group mark that collectively indicates the positions of the plurality of other vehicles 2 instead of the other vehicle mark. Is displayed on the map. By performing such map display, the positional relationship between the host vehicle 1 and the other vehicle 2 is notified to the user.

  Further, the navigation device 10 outputs a warning sound or displays a warning message according to an instruction from the vehicle control device 11 as necessary. As a result, the user can be notified of the presence of the other vehicle 2 traveling toward the host vehicle 1.

  Furthermore, the navigation apparatus 10 performs a navigation process for guiding the host vehicle 1 to the destination by setting the destination. That is, when a destination is set for the navigation device 10 by a user operation or the like, the navigation device 10 searches for a recommended route to the destination based on the map data. Then, the searched recommended route is displayed on the map, and the user's vehicle 1 is guided to the destination by instructing the user in the traveling direction according to the recommended route. Also at this time, as described above, the vehicle mark and the other vehicle mark are displayed on the map.

  The vehicle control device 11 controls various operations in the host vehicle 1 according to the behavior of the host vehicle 1 and the driving operation of the user. For example, the acceleration generated in the host vehicle 1 is controlled by adjusting the accelerator opening according to the depression amount of the accelerator pedal, the engine speed, and the like. Furthermore, the vehicle control device 11 determines the positional relationship between the own vehicle 1 and the other vehicle 2 and the change state thereof based on the detection result of the own vehicle position by the navigation device 10 and the identification result of the other vehicle position. Depending on the result, warning instructions for the navigation device 10 and drive control of the host vehicle 1 are performed as necessary. For example, it is assumed that the other vehicle 2 traveling on the road intersecting the traveling road of the host vehicle 1 is determined to approach the host vehicle 1 within a predetermined distance. In such a case, the vehicle control device 11 instructs the navigation device 10 to warn that the other vehicle 2 is approaching, and controls the brake of the own vehicle 1 to control the own vehicle 1 if necessary. Stop.

  The communication control device 12 is a device that performs vehicle-to-vehicle communication with the communication control device 22 mounted on the other vehicle 2 using the antenna 13. Through the inter-vehicle communication performed by the communication control device 12, the communication control device 12 receives other vehicle position information representing the position of the other vehicle 2 and transmits own vehicle position information representing the position of the own vehicle 1. At this time, vehicle ID information for specifying each vehicle that performs inter-vehicle communication and traveling direction information indicating the traveling direction of each vehicle are transmitted together with the own vehicle position information or the other vehicle position information. In this way, the position information of the host vehicle 1 and the other vehicle 2 is exchanged.

  The other vehicle position information received by the communication control device 12 is output from the communication control device 12 to the navigation device 10. Based on the other vehicle position information, the navigation device 10 specifies the position of the other vehicle 2 as described above, and outputs the result to the vehicle control device 11. When the identification result of the other vehicle position is output from the navigation device 10 in this way, the vehicle control device 11 performs the above-described control on the own vehicle 1 based on the output result. Note that, for example, a communication system based on DSRC (Dedicated Short Range Communications) can be used for the inter-vehicle communication performed between the own vehicle 1 and the other vehicle 2 using the communication control devices 12 and 22.

  The navigation device 10, the vehicle control device 11, the communication control device 12, and the antenna 13 that are mounted on the host vehicle 1 perform processing and operations as described above. The navigation device 20, the vehicle control device 21, the communication control device 22, and the antenna 23 mounted on the other vehicle 2 perform the same processing and operation.

  Next, the configuration of the navigation device 10 is shown in FIG. The navigation device 10 includes a control unit 101, a vibration gyro 102, a vehicle speed sensor 103, a hard disk (HDD) 104, a GPS receiving unit 105, a display monitor 106, and an input device 107.

  The control unit 101 includes a microprocessor, various peripheral circuits, a RAM, a ROM, and the like, and executes various processes based on a control program and map data recorded in the HDD 104. The control unit 101 executes various processes in the navigation device 10. For example, a destination search process when setting a destination, a recommended route search process to the set destination, a vehicle position detection process, various image display processes, a route guidance process, and the like are executed. The

  The control unit 101 is connected to the vehicle control device 11 and the communication control device 12, and various signals and data are input / output between them. For example, information on the vehicle position detected by the control unit 101 is output to the communication control device 12 every predetermined time. The own vehicle position information is transmitted from the own vehicle 1 to the other vehicle 2 by inter-vehicle communication performed by the communication control device 12. On the other hand, the other vehicle position information received from the other vehicle 2 is input from the communication control device 12 to the control unit 101.

  When the other vehicle position information is input from the communication control device 12, the control unit 101 specifies the position of the other vehicle 2 based on the other vehicle position information. At this time, by performing map matching based on the other vehicle position information and the map data recorded on the HDD 104, it is determined which road the other vehicle 2 is traveling on the map, and the determination result is reflected. Then, the position of the other vehicle 2 may be specified. The result of specifying the other vehicle position is output from the control unit 101 to the vehicle control device 11 together with the detection result of the own vehicle position. Based on these, the vehicle control device 11 determines the positional relationship between the own vehicle 1 and the other vehicle 2 and the change state thereof, and performs the warning instruction and the drive control as described above as necessary.

  The vibration gyro 102 is a sensor for detecting the angular velocity of the host vehicle 1. The vehicle speed sensor 103 is a sensor for detecting the vehicle speed of the host vehicle 1. By detecting the motion state of the host vehicle 1 at predetermined time intervals using these sensors, the amount of movement of the host vehicle 1 is obtained, and the current position of the host vehicle 1 is thereby detected.

  The HDD 104 is a non-volatile recording medium in which data can be rewritten, and various types of data including map data are recorded. The map data recorded in the HDD 104 is read out under the control of the control unit 101 as necessary, and is used for various processes and controls executed by the control unit 101. This map data includes route calculation data, route guidance data, road data, and background data. The route calculation data is used for route search to the destination. The route guidance data is used to guide the host vehicle 1 to a destination according to a set route, and represents an intersection name, a road name, and the like. The road data represents the shape and type of the road. The background data represents map shapes other than roads such as rivers and railways, positions of various facilities, and the like.

  The GPS receiving unit 105 receives a GPS signal transmitted from a GPS satellite and outputs it to the control unit 101. The GPS signal includes the position and transmission time of the GPS satellite that transmitted the GPS signal as information for obtaining the position of the host vehicle 1 and the current time. Therefore, by receiving GPS signals from a predetermined number or more of GPS satellites, the current position and current time of the host vehicle 1 can be calculated based on these pieces of information.

  The display monitor 106 is a device for displaying various screens in the navigation device 10 and is configured using a liquid crystal display or the like. As described above, the display monitor 106 displays a map around the host vehicle 1 and displays the host vehicle mark and the other vehicle mark or the other vehicle group mark on the map. The contents of the screen displayed on the display monitor 106 are determined by screen display control performed by the control unit 101. The display monitor 106 is installed at a position where the user can easily see, for example, on the dashboard of the own vehicle 1 or in the instrument panel.

  The input device 107 is a device for a user to perform various input operations for operating the navigation device 10, and includes various input switches. By operating the input device 107, the user can input, for example, the name of a facility or point desired to be set as a destination, select a destination from pre-registered registered locations, or select an arbitrary map. Or scroll in the direction. The input device 107 can be realized by an operation panel, a remote controller, or the like. Alternatively, the input device 107 may be realized by a touch panel integrated with the display monitor 106.

  When the user operates the input device 107 to set the destination, the navigation device 10 searches for a recommended route to the destination by performing a predetermined algorithm operation based on the above-described route calculation data. Then, the current position of the host vehicle 1 is detected, and the host vehicle 1 is guided to the destination according to the searched recommended route while displaying the road map around it.

  FIG. 3 shows a flowchart of processing when the navigation device 10 displays the own vehicle mark, the other vehicle mark, and the other vehicle group mark on the map. This flowchart is executed by the control unit 101 at predetermined processing cycle intervals.

  In step S10, the control unit 101 detects the vehicle position. Here, as described above, the position of the host vehicle 1 is detected based on the detection results of the vibration gyro 102 and the vehicle speed sensor 103. At this time, by performing map matching based on the map data recorded in the HDD 104, it is determined which road the host vehicle 1 is traveling on the map, and the position of the host vehicle is reflected by reflecting the determination result. It may be detected. Thereby, the own vehicle position can be corrected according to the road on which the own vehicle 1 is traveling.

  In step S <b> 20, the control unit 101 displays a map around the vehicle position detected in step S <b> 10 on the display monitor 106 based on the map data recorded in the HDD 104. In the next step S30, the control unit 101 displays the vehicle mark indicating the vehicle position detected in step S10 on the map displayed in step S20.

  In step S <b> 40, the control unit 101 receives other vehicle position information from the communication control device 12. Here, as described above, the other vehicle position information indicating the position of the other vehicle 2 is transmitted from the other vehicle 2 by the inter-vehicle communication performed between the own vehicle 1 and the other vehicle 2 using the communication control device 12. . At the same time, vehicle ID information and traveling direction information are also transmitted. The other vehicle position information thus transmitted is received by the communication control device 12 and output from the communication control device 12 to the control unit 101.

  In step S50, the control unit 101 classifies the other vehicle 2 that has acquired the position information in step S40 according to the traveling road and the traveling direction. At this time, the traveling road of the other vehicle 2 is determined based on the position of the other vehicle 2 indicated by the received other vehicle position information and the map data recorded in the HDD 104. Further, the traveling direction of the other vehicle 2 is determined based on the traveling direction information transmitted together with the other vehicle position information. Alternatively, the traveling direction may be determined based on the position history of the other vehicle 2 without using the traveling direction information. In this case, the traveling direction information may not be transmitted from the other vehicle 2 to the own vehicle 1. In addition, you may exclude the other vehicle 2 located outside the range of the map displayed at step S20 from the classification | category object in step S50.

  By executing step S50, the plurality of other vehicles 2 whose position information is received by the communication control device 12 are classified into a plurality of groups (other vehicle groups). Each other vehicle group is constituted by a plurality of other vehicles 2 traveling in the same direction on the same road within the map range. As a result of the classification, there may be only one other vehicle 2 constituting one group. Even in such a case, in the following description, the other vehicle 2 will be referred to as another vehicle group for the sake of convenience.

  When classifying the other vehicle 2 in the above step S50, the other vehicle 2 running on the same road as the own vehicle 1 and located within a predetermined distance (for example, within 10 m) from the own vehicle position is selected. Categorize into a group different from other groups. This group is composed of other vehicles 2 that are close to the host vehicle 1. In the following description, this is referred to as a proximity other vehicle group.

  In step S60, the control unit 101 selects one of the other vehicle groups classified according to the traveling road and the traveling direction in step S50.

  In step S70, the control unit 101 determines whether or not the other vehicle group selected in step S60 includes a vehicle that is not subject to the other vehicle group mark display. The vehicle other than the other vehicle group mark display target mentioned here is a vehicle that should display its position on a map and alert the user. For example, emergency vehicles such as ambulances and police cars, vehicles that may stop frequently such as route buses, school buses, taxis, and vehicles that run at low speeds such as road sweepers and snowplows . In addition, the user may be allowed to designate in advance the types of vehicles that are not subject to display of other vehicle group marks. Note that it is possible to determine whether the vehicle is not subject to other vehicle group mark display based on the vehicle ID information transmitted together with the other vehicle position information. Or the information which shows the kind of vehicle may be transmitted with other vehicle position information, and you may determine based on this.

  If it is determined in step S70 that the selected other vehicle group includes vehicles that are not subject to other vehicle group mark display, the control unit 101 proceeds to step S80. In step S80, the other vehicle mark is displayed at the position of the other vehicle 2 that is determined to be a vehicle that is not subject to other vehicle group mark display in step S70. Here, the other vehicle 2 on which the other vehicle mark is displayed is excluded from the subsequent processing targets. Thereby, a specific vehicle type is excluded from the display target of the other vehicle group mark. After executing Step S80, the control unit 101 proceeds to Step S90. On the other hand, if it is determined in step S70 that the selected other vehicle group does not include vehicles that are not subject to other vehicle group mark display, the control unit 101 proceeds to step S90 without executing step S80.

  In step S90, the control unit 101 determines whether the other vehicle group selected in step S60 is an oncoming vehicle. If the other vehicle group is an oncoming vehicle, that is, the other vehicle group constituted by one or a plurality of other vehicles 2 traveling on the same road as the own vehicle 1 in the direction facing the own vehicle 1 is determined in step S60. If it is selected at step S150, the control unit 101 proceeds to step S150. Thereby, the other vehicle mark or the other vehicle group mark is not displayed for the oncoming vehicle that does not affect the traveling of the host vehicle 1, and the processing load on the control unit 101 is reduced. On the other hand, if the other vehicle group is not an oncoming vehicle, the control unit 101 proceeds to step S100.

  In step S100, the control unit 101 determines whether a plurality of other vehicles 2 are included in the other vehicle group selected in step S60. When a plurality of other vehicles 2 are included in the other vehicle group, the control unit 101 proceeds to step S110. On the other hand, when the other vehicle group does not include a plurality of other vehicles 2, that is, when the other vehicle group is configured by only one other vehicle 2, the control unit 101 proceeds to step S140.

  In step S110, the control unit 101 determines whether or not the other vehicle group selected in step S60 is the above-described adjacent other vehicle group. When the selected other vehicle group is a nearby other vehicle group, that is, the other vehicle group is configured by a plurality of other vehicles 2 that are traveling on the same road as the own vehicle 1 and are located within a predetermined distance from the position of the own vehicle 1. If so, the control unit 101 proceeds to step S120. On the other hand, when the selected other vehicle group is not the adjacent other vehicle group, the control unit 101 proceeds to step S130.

  In step S120, the control unit 101 displays the other vehicle group mark corresponding to the other vehicle group selected in step S60 on the map displayed in step S20. Here, the other vehicle group mark is displayed over the host vehicle mark displayed in step S30. If step S120 is performed, the control part 101 will progress to step S150.

  In step S130, the control unit 101 displays the other vehicle group mark corresponding to the other vehicle group selected in step S60 on the map displayed in step S20. Here, the other vehicle group mark is displayed at the position of the other vehicle 2 closest to the host vehicle 1 among the other vehicles 2 included in the other vehicle group. At this time, the number of other vehicles 2 may be displayed together with other vehicle group marks. If step S130 is performed, the control part 101 will progress to step S150.

  In step S140, the control unit 101 displays the other vehicle mark corresponding to the other vehicle group selected in step S60 on the map displayed in step S20. Here, the other vehicle mark is displayed at the position of one other vehicle 2 constituting the other vehicle group. If step S140 is performed, the control part 101 will progress to step S150.

  When position information is transmitted from a plurality of other vehicles 2 and received by the communication control device 12, the plurality of other vehicles 2 are classified into another vehicle group. When the other vehicle group thus classified is constituted by a plurality of other vehicles 2, the process of step S120 or step S130 as described above is executed. Thereby, it replaces with an other vehicle mark and the other vehicle group mark which shows the position of several other vehicles 2 collectively is displayed on a map. On the other hand, when the other vehicle group is configured by one other vehicle 2, the other vehicle mark is displayed on the map by executing the process of step S140 as described above.

  In step S150, the control unit 101 determines whether all other vehicle groups classified in step S50 have been selected in step S60. If all other vehicle groups have been selected, the control unit 101 ends the flowchart of FIG. On the other hand, if there is another vehicle group that has not yet been selected, the control unit 101 returns to step S60. Then, after selecting any one of the unselected other vehicle groups in step S60, the processing as described above is repeated.

  By executing the processing described above, the own vehicle mark, the other vehicle mark, and the other vehicle group mark are displayed on the map. An example of the map screen at this time is shown in FIG. In the map screen of FIG. 4, another vehicle group mark 31 is displayed so as to overlap the own vehicle mark 30. The other vehicle group mark 31 is displayed for a plurality of other vehicles 2 traveling within a predetermined distance from the host vehicle 1 by the process of step S120 of FIG. Further, the other vehicle group mark 32 is displayed for a plurality of other vehicles 2 traveling on the same road as the host vehicle 1 by the process of step S130 of FIG.

  The other vehicle group marks 33 and 34 are displayed for a plurality of other vehicles 2 traveling on a road different from the own vehicle 1 by the process of step S130 of FIG. The other vehicle group marks 33 and 34 display the number of other vehicles 2 together as described above. When displaying such a number, you may make it include the number of vehicles which cannot communicate between vehicles between the own vehicles 1. FIG. For example, a camera is mounted on the other vehicle 2, and information on surrounding vehicles photographed by the other vehicle 2 by this camera is transmitted to the host vehicle 1 by inter-vehicle communication. The total value of the number of vehicles that cannot be communicated between vehicles determined based on the information thus transmitted and the number of other vehicles 2 that have received position information through inter-vehicle communication is displayed along with other vehicle group marks.

  On the other hand, the other vehicle marks 35 and 36 are displayed for one other vehicle 2 by the process of step S140 in FIG. When there is no other vehicle traveling on the same road in the same direction, the other vehicle group mark is not displayed, and such another vehicle mark is displayed.

  Instead of the other vehicle group marks 31 to 34 shown in FIG. 4, other vehicle group marks simulating the shape of the vehicle may be displayed as shown in FIG. FIG. 5A is an example of another vehicle group mark when a plurality of other vehicles 2 are traveling in the vertical direction of the map, and FIG. It is an example of the other vehicle group mark at the time of drive | working toward the left-right direction. In addition, other vehicle group marks in various display forms can be displayed on the map.

According to the embodiment described above, the following operational effects are obtained.
(1) The navigation device 10 that is an in-vehicle map display device is connected to a communication control device 12 that receives position information (other vehicle position information) of the other vehicle 2 transmitted from the other vehicle 2 by wireless communication. In addition, the navigation device 10 displays a map on the display monitor 106 by the processing of the control unit 101 (step S20), and displays a vehicle mark indicating the position of the vehicle 1 on the map (step S30). Based on the position information of the other vehicle 2 received by the communication control device 12, the other vehicle mark indicating the position of the other vehicle 2 is displayed on the map (step S140). Furthermore, the navigation device 10 replaces the other vehicle mark with the position of the plurality of other vehicles 2 when the position information is transmitted from the plurality of other vehicles 2 and received by the communication control device 12 by the processing of the control unit 101. Are displayed together on the map (steps S120 and S130). Since it did in this way, the navigation apparatus 10 should just display one other vehicle group mark with respect to several other vehicles irrespective of the number. Therefore, an increase in processing load can be suppressed even if the number of other vehicles to be displayed increases.

(2) In steps S120 and S130, the control unit 101 detects other vehicles 2 for a plurality of other vehicles 2 traveling on the same road or a plurality of other vehicles 2 traveling in the same direction. One group mark is displayed. Since it did in this way, the position of a plurality of other vehicles 2 can be shown on a map in an easy-to-see manner by other vehicle group marks.

(3) However, for one or a plurality of other vehicles 2 traveling in a direction facing the host vehicle 1, no other vehicle mark or other vehicle group mark is displayed by the process of step S90. did. Thereby, it is possible to reduce the processing load of the control unit 101 by preventing the other vehicle mark or the other vehicle group mark from being displayed for an oncoming vehicle that does not significantly affect the traveling of the host vehicle 1.

(4) In step S120, the controller 101 travels on the same road as the host vehicle 1 and adds one other vehicle group mark to the plurality of other vehicles 2 located within a predetermined distance from the host vehicle position. Overlaid on the car mark. Since it did in this way, the some other vehicle 2 adjacent to the own vehicle 1 can be represented by one other vehicle group mark.

(5) When displaying the other vehicle group mark in step S120 or S130, the control unit 101 can display the number of other vehicles 2 indicated by the other vehicle group mark together with the other vehicle group mark. In this way, it is possible to easily notify the user how many other vehicles 2 are included in the other vehicle group.

(6) The control unit 101 excludes a specific vehicle type from the display target of the other vehicle group mark among the plurality of other vehicles 2 (steps S70 and S80). Because of this, emergency vehicles such as ambulances and police cars, vehicles that stop frequently such as route buses and school buses, vehicles that run at low speeds such as road sweepers and snowplows, vehicles that are designated in advance by the user, etc. The position can be displayed alone on the map to alert the user.

(7) When displaying the other vehicle group mark in step S <b> 130, the control unit 101 displays the other vehicle group mark at the position of the other vehicle 2 closest to the host vehicle 1 among the plurality of other vehicles 2. Since it did in this way, an other vehicle group mark can be displayed in the position of the other vehicle 2 with the largest influence on driving | running | working of the own vehicle 1 among the several other vehicles 2 which comprise an other vehicle group.

  In the embodiment described above, the example in which the processing shown in the flowchart of FIG. 3 is executed by the navigation device 10 has been described. However, the present invention is not limited to this and can be applied to various in-vehicle electronic devices.

  The embodiment and various modifications described above are merely examples. Therefore, the present invention is not limited to these contents as long as the features of the invention are not impaired.

  In the embodiment described above, each unit described in the claims is realized by processing executed in the control unit 101 of the navigation device 10. That is, the control unit 101 of the navigation device 10 functions as map display control means, host vehicle mark display control means, other vehicle mark display control means, and other vehicle group mark display control means. Note that the above description is merely an example, and when interpreting the invention, the correspondence between the description items of the embodiments and the description items of the claims is not limited or restricted.

1: host vehicle 2: other vehicle 10, 20: navigation device 11, 21: vehicle control device 12, 22: communication control device 13, 23: antenna 101: control unit 102: vibration gyro 103: vehicle speed sensor 104: HDD
105: GPS receiver 106: Display monitor 107: Input device

Claims (10)

An in-vehicle map display device connected to a communication device that receives position information of other vehicles transmitted by communication,
Map display control means for displaying a map on a display monitor;
Own vehicle mark display control means for displaying the own vehicle mark indicating the position of the own vehicle on the map;
Other vehicle mark display control means for displaying an other vehicle mark indicating the position of the other vehicle on the map based on the position information received by the communication device;
When the position information is transmitted from a plurality of other vehicles and received by the communication device, other vehicle group marks that collectively indicate the positions of the plurality of other vehicles are displayed on the map instead of the other vehicle marks. An on-vehicle map display device comprising: other vehicle group mark display control means for displaying on the vehicle. The in-vehicle map display device according to claim 1,
The on-vehicle map display device characterized in that the other vehicle group mark display control means displays the other vehicle group mark on a plurality of the other vehicles traveling on the same road. The in-vehicle map display device according to claim 2,
The on-vehicle map display device, wherein the other vehicle group mark display control means displays the other vehicle group mark on a plurality of the other vehicles traveling in the same direction. The in-vehicle map display device according to claim 3,
The on-vehicle map display device, wherein the other vehicle group mark display control means does not display the other vehicle group mark for a plurality of the other vehicles traveling in a direction facing the host vehicle. . In the vehicle-mounted map display apparatus as described in any one of Claims 1-4,
The other vehicle group mark display control means displays the other vehicle group mark on the plurality of other vehicles running on the same road as the own vehicle and located within a predetermined distance from the position of the own vehicle. An on-vehicle map display device characterized by being displayed over a mark. In the vehicle-mounted map display device according to any one of claims 1 to 5,
The on-vehicle map display device, wherein the other vehicle group mark display control means displays the number of the other vehicles indicated by the other vehicle group mark together with the other vehicle group mark. In the vehicle-mounted map display device according to any one of claims 1 to 6,
The said other vehicle group mark display control means excludes a specific vehicle type from the display object of the said other vehicle group mark among several said other vehicles, The vehicle-mounted map display apparatus characterized by the above-mentioned. In the vehicle-mounted map display apparatus as described in any one of Claims 1-7,
The said other vehicle group mark display control means displays the said other vehicle group mark in the position of the other vehicle nearest from the said own vehicle among several said other vehicles, The vehicle-mounted map display apparatus characterized by the above-mentioned. An in-vehicle map display device connected to a communication device that receives position information of other vehicles transmitted by communication,
Map display control means for displaying a map on a display monitor;
Own vehicle mark display control means for displaying the own vehicle mark indicating the position of the own vehicle on the map;
Another vehicle mark display control means for displaying on the map a vehicle mark indicating the position of the vehicle on the basis of the position information received by the communication device,
The on-vehicle map display device, wherein the other vehicle mark display control means does not display the other vehicle mark on the other vehicle traveling in a direction facing the host vehicle.   The vehicle control system which has a vehicle-mounted map display apparatus and communication apparatus as described in any one of Claims 1-9.

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