JP2010181274A - Navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To notify a driver intelligibly of a state of a route from own vehicle position to a destination, in a navigation apparatus. <P>SOLUTION: The navigation apparatus sets the destination 32, and detects own vehicle position 30. Then, the navigation apparatus generates a summarized map 23 for showing the route from own vehicle position 30 to the destination 32, and displays the summarized map 23, a normal map 22 and a crossing enlarged map 21, simultaneously on a display monitor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a navigation device for a vehicle.

  Conventionally, a navigation device that divides the display monitor screen into left and right, displays a normal map in one screen area, and displays a map near the guidance point where the vehicle should turn is used in the other screen area. ing. In such a navigation apparatus, a technique is known in which a map near the guidance point is enlarged and displayed as the vehicle approaches the guidance point (see Patent Document 1).

JP 2002-54936 A

  In the conventional technique disclosed in Patent Document 1, a normal map and a map near the guidance point are displayed simultaneously. However, a map of the route from the vehicle position to the destination is not displayed. Therefore, even if the driver wants to know the state of the route from the vehicle position to the destination, it cannot be notified in an easy-to-understand manner.

  A navigation apparatus according to the present invention includes destination setting means for setting a destination, vehicle position detection means for detecting the vehicle position, and summary map creation for creating a summary map representing a route from the vehicle position to the destination. Means and display control means for simultaneously displaying on the display monitor three or more screens including a summary map screen on which the summary map is displayed.

  According to the present invention, it is possible to easily inform the driver of the route from the vehicle position to the destination.

It is a block diagram which shows the structure of the navigation apparatus by one Embodiment of this invention. It is a figure which shows an example of the map screen displayed in the case of route guidance in the navigation apparatus by 1st Embodiment. It is a flowchart of the process performed when displaying a map screen in the navigation apparatus by 1st Embodiment. It is a figure which shows an example of the map screen displayed in the case of route guidance in the navigation apparatus by 2nd Embodiment. It is a flowchart of the process performed when displaying a map screen in the navigation apparatus by 2nd Embodiment.

-First embodiment-
FIG. 1 shows the configuration of a navigation device according to an embodiment of the present invention. As shown in FIG. 1, the navigation apparatus 1 includes a control unit 10, a vibration gyro 11, a vehicle speed sensor 12, a hard disk (HDD) 13, a GPS (Global Positioning System) receiving unit 14, and a VICS (Vehicle Information and Communication System) information reception. Unit 15, display monitor 16, speaker 17, and input device 18.

  The control unit 10 includes a microprocessor, various peripheral circuits, a RAM, a ROM, and the like, and executes various processes described later based on a control program and map data recorded in the HDD 13.

  The vibration gyro 11 is a sensor for detecting the angular velocity of the host vehicle. The vehicle speed sensor 12 is a sensor for detecting the vehicle speed of the host vehicle. By detecting the motion state of the host vehicle at predetermined time intervals using these sensors, the position movement amount of the host vehicle is obtained by the control unit 10, thereby detecting the current position of the host vehicle and the direction of the host vehicle. Is done.

  The HDD 13 is a non-volatile recording medium in which various data including map data are recorded. Data recorded in the HDD 13 is read out under the control of the control unit 10 as necessary, and is used for various processes and controls executed by the control unit 10.

  The map data recorded in the HDD 13 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 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. Note that the minimum unit representing each road in the map data is called a link. That is, each road in the map data is composed of a plurality of links.

  The GPS receiver 14 receives a GPS signal transmitted from a GPS satellite and outputs it to the controller 10. 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 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 can be calculated based on these pieces of information.

  The VICS information receiving unit 15 receives VICS information transmitted from the VICS center (not shown) to the navigation device 1. With this VICS information, various road traffic information such as traffic jam information, traffic regulation information, and parking lot information is transmitted to the navigation device 1 and acquired by the navigation device 1. The VICS information received by the VICS information receiving unit 15 is output to the control unit 10 and used when the control unit 10 searches for a recommended route. Further, the contents are displayed on the display monitor 16.

  The transmission of VICS information from the VICS center to the navigation device 1 is performed mainly by radio wave beacons installed on highways, optical beacons installed mainly on general roads, or FM multiplex broadcasting. . The radio wave beacon and the optical beacon transmit VICS information locally to the vehicle passing near the installation point by radio waves or light (infrared rays). In contrast, FM multiplex broadcasting can transmit VICS information to a relatively wide area.

  The display monitor 16 is a device for displaying various images and videos, and a liquid crystal display or the like is used. The display monitor 16 displays a map around the vehicle position, a summary map up to the next guidance intersection, and the like. The display monitor 16 is installed at a position that is easy to see from the driver's seat, for example, on the dashboard of the host vehicle or in the instrument panel. The speaker 17 outputs a route guidance voice or the like under the control of the control unit 10.

  The input device 18 is a device for a user to perform various input operations for operating the navigation device 1 and includes various input switches. The user operates the input device 18 to input, for example, the name of a facility or point desired to be set as the destination, select a destination from registered locations registered in advance, or select any map on the map. Or scroll in the direction. The input device 18 can be realized by an operation panel, a remote controller, or the like. Alternatively, the input device 18 may be a touch panel integrated with the display monitor 16.

  When the user operates the input device 18 to set a destination, the navigation device 1 performs a route search process by calculating a predetermined algorithm based on the above-described route calculation data, with the current position of the host vehicle as the departure point. By this route search process, a route from the departure point to the destination is searched, and this is set as a recommended route. When the recommended route is set in this way, the recommended route is displayed on the map separately from other roads by a method such as using a color different from that of the other roads. Thereby, the user can easily recognize the recommended route on the map screen displayed on the display monitor 16. In addition, the navigation device 1 guides the host vehicle by instructing the traveling direction by an image or voice to the user so that the host vehicle can travel according to the recommended route. In this way, route guidance to the destination is performed.

  In the above route guidance, the navigation device 1 displays a summary map with a simplified road shape in order to represent a route (hereinafter simply referred to as a route) of a recommended route from the vehicle position to the destination. The created summary map is displayed on the display monitor 16 together with the normal map. Further, the distance from the vehicle position to the nearest guidance point is obtained, and if this is less than a predetermined value, an enlarged intersection view enlarged around the guidance point is shown in order to show the traveling direction of the vehicle at the guidance point. Displayed on the display monitor 16. In this way, three map screens are displayed simultaneously. The guidance point is a target point where the navigation device 1 provides direction indication guidance by voice or screen display to the driver so that the host vehicle can travel according to the recommended route. Specifically, a point where the traveling direction of the host vehicle changes on the recommended route, for example, a right / left turn intersection, a branch point, a junction point, or the like is set as the guidance point.

  When the summary map and the enlarged intersection map are displayed together with the normal map as described above, the navigation device 1 superimposes an arrow for indicating the direction in which the host vehicle should turn at the guidance point on these maps. indicate. In route guidance, the vehicle is guided to the destination by displaying the summary map and the enlarged intersection. A specific method for creating the summary map will be described later.

  FIG. 2 is an example of a map screen displayed on the display monitor 16 in the navigation device 1 of the present embodiment during route guidance. As shown in FIG. 2, the navigation device 1 divides the screen of the display monitor 16 into three screen areas, displays an enlarged intersection view 21 in the left screen area, and a normal map 22 in the central screen area. And the summary map 23 is displayed in the screen area on the right side.

  In the enlarged intersection view 21, the vicinity of the guide point 34 closest to the vehicle position 30 is enlarged. This intersection enlarged view 21 may use image data corresponding to each intersection stored in the HDD 13 or may be generated from the same map data as the normal map 22. At the guidance point 34, an arrow indicating the traveling direction of the host vehicle is displayed, and an icon 33 indicating a facility as a landmark is displayed. In addition, although the intersection enlarged view which simplified the road shape was illustrated here, you may expand and display a normal map.

  The map 22 is a road shape map represented by the map data recorded in the HDD 13, and represents the state of the road within a predetermined range from the vehicle position 30. In this map 22, the recommended route extending from the departure point 31 toward the destination is displayed so as to be identifiable by a color different from that of other roads. On the recommended route, guide points 34, 35 and 36 existing within the map range are shown. Further, based on the VICS information received by the VICS information receiving unit 15, traffic congestion information 51, 52 and 53 indicating traffic congestion sections on the road are displayed on the map 22.

  The summary map 23 represents a route from the vehicle position 30 to the destination 32, and is a map created by simplifying the shape of the road including the route based on the map data recorded in the HDD 13. . When the host vehicle 30 changes as the host vehicle travels toward the destination 32, the range of the route displayed on the summary map 23 changes continuously accordingly. In accordance with this change, the scale of the summary map 23 also changes continuously. Such a change in map scale is called free zoom.

  The summary map 23 shows guidance points 34, 35, 36 and 37 between the vehicle position 30 and the destination 32. Of these, the guidance point 34 is a landmark as in the enlarged intersection view 21. A facility icon 33 is displayed. In addition, among the above-described traffic jam information 51 to 53, traffic jam information 53 indicating the traffic jam section of the route represented by the summary map 23 is also displayed.

  A road 41 and a road 42 are connected to the route represented by the summary map 23. The roads 41 and 42 are both displayed on the enlarged intersection map 21 and the map 22, but only one road 41 is displayed on the summary map 23, and the road 42 is not displayed. Such a difference in display content is performed by selecting a summary target road from roads connected to the route, and creating a summary map 23 by simplifying the shape of the selected summary target road and the shape of the route. A specific method for selecting the road to be summarized will be described in detail later.

  As described above, the navigation apparatus 1 simultaneously displays the enlarged intersection map 21, the map 22, and the summary map 23 on the display monitor 16. As a result, the driver is informed of the state of the route from the vehicle position 30 to the destination 32.

  In FIG. 2, the enlarged intersection map 21, the map 22, and the summary map 23 are displayed so that, for example, north is on the upper side of the screen in the same predetermined direction. Thereby, each map is displayed on the display monitor 16 so as to face each other in the same direction. Alternatively, each map described above is displayed toward the direction in which the host vehicle is facing, and the direction of the host vehicle position 30 is displayed in accordance with the direction so that the maps are directed in the same direction. Good. Thus, when the three maps face the same direction, it becomes easier for the user to grasp the directions of the three maps. However, the directions of these three maps may be different depending on the user's request.

  FIG. 3 shows a flowchart of processing executed when displaying the map screen as described above. This flowchart is executed by the control unit 10. In step S10, the control unit 10 sets a departure place and a destination. That is, as described above, the current vehicle position is set as the departure point, and the destination of the vehicle is set according to the operation of the input device 18 by the user. Thereby, the starting point 31 and the destination 32 of FIG. 2 are set. In step S20, the control unit 10 searches for a recommended route from the departure point to the destination set in step S10.

  In step S30, the control unit 10 sets a guidance point on the recommended route searched in step S20. Here, a point where the traveling direction of the vehicle changes, such as a right-left turn intersection in the recommended route, is set as the guidance point. Thereby, the guide points 34 to 37 in FIG. 2 are set on the recommended route.

  In step S40, the control unit 10 detects the vehicle position. Here, as described above, the vehicle position is detected based on detection results output from various sensors such as the vibration gyro 11, the vehicle speed sensor 12, and the GPS receiver 14. Thereby, the vehicle position 30 in FIG. 2 is detected. In step S50, the control unit 10 displays a normal map representing the vicinity of the vehicle position detected in step S40 on the display monitor 16 based on the map data recorded in the HDD 13. Thereby, the map 22 of FIG. 2 is displayed.

  In step S60, the control unit 10 calculates the distance from the vehicle position detected in step S40 to the destination set in step S10. At this time, a linear distance from the vehicle position to the destination may be obtained, or a route along the route from the vehicle position to the destination may be obtained.

  In step S70, the control unit 10 sets the scale of the summary map. Here, the scale of the summary map is set so that the map scale is as large as possible within the range where the vehicle position and the destination enter the display area set in the screen. Thus, the scale of the summary map is set so that the scale becomes larger as the vehicle position approaches the destination. Alternatively, based on the distance calculated in step S60, the scale of the summary map may be set so that the scale becomes larger as the distance becomes shorter.

  In step S80, the control unit 10 selects a summary target road. Here, the road on the route from the vehicle position detected in step S40 to the destination and any road among the roads connected to the route are selected as the summary target roads. Of these roads, the road connected to the route is selected preferentially at the guidance point set in step S30. As a result, the traveling direction of the host vehicle at the guidance point can be seen on the summary map. If there are too many guidance points, some roads may be omitted.

  On the other hand, for roads connected to the route other than the guidance point, the summarization target road can be selected based on the road type. That is, a road with a higher road type among roads connected to the route is preferentially selected as a summary target road. For example, when a national road and a general road are connected to the route, the national road is selected as the summarization target road and the general road is not selected.

  Alternatively, the summarization target road may be selected based on the distance between the road connected to the route and the vehicle position or the destination. For example, a road that is connected to the route at a position closer to the own vehicle position, or a road that is connected to the route at a position closer to the destination on the contrary, is preferentially selected as the summarization target road. At this time, the selection method can be switched with the intermediate point of the route as a boundary. For example, between the vehicle position and the intermediate point of the route, the road that is connected to the route at a position closer to the vehicle position is preferentially selected as the road to be summarized, and between the intermediate point of the route and the destination, A road connected to the route at a position closer to is preferentially selected as a road to be summarized.

  It should be noted that the selection of summary target roads as described above is preferably executed when the total number of roads connected to the route exceeds a predetermined threshold value. The threshold value may be changed according to the length of the route. In addition, when a plurality of roads connected to a route are adjacent to each other within a predetermined distance, the adjacent roads are counted regardless of whether or not the total number of roads connected to the route exceeds a threshold value. It is preferable to select any one of the roads as a summary target road. At this time, the distance between the roads determined to be adjacent may be changed according to the length of the route.

  Since the selection method of the summarization target road described above is an example, another selection method may be used. For example, the summarization target road can be selected on the basis of the width of the road, the number of lanes, the traffic condition, the past travel history, and the like. A plurality of selection methods may be used in combination.

  In step S90, the control unit 10 creates a summary map by simplifying the shape of the summarization target road selected in step S80 based on the map data recorded in the HDD 13. At this time, for roads on the route, among the links constituting the recommended route, the link corresponding to the vehicle position and the link existing between the link and the destination are to be created as a summary map. . For roads connected to a route, a link directly connected to the route link is a summary map creation target. Each link is linearized according to its length, and the intersection angle of each link is quantized in a predetermined angle unit, for example, 45 ° unit, thereby creating a summary map. Note that the summary map creation method described here is merely an example, and other methods may be used. That is, any summary map creation method may be used as long as the shape of the summary target road can be simplified.

  In step S100, the control unit 10 displays the summary map created in step S90 on the display monitor 16. Thereby, the summary map 23 of FIG. 2 is displayed.

  In step S110, the control unit 10 determines whether the distance from the vehicle position detected in step S40 to the guide point closest to the vehicle position among the guide points set in step S30 is less than a predetermined value. judge. When it is less than the predetermined value, for example, within 1 km, the control unit 10 proceeds to the next step S120. In step S120, the control unit 10 displays an enlarged enlarged view of the intersection on the display monitor 16 in an enlarged manner around the guidance point closest to the vehicle position. As a result, the intersection enlarged view 21 of FIG. 2 is displayed for the nearest guidance point such as the nearest intersection within a predetermined distance from the vehicle position. If step S120 is performed, the control part 10 will progress to step S130.

  On the other hand, when it determines with the distance from the own vehicle position to the nearest guidance point being more than predetermined value in step S110, the control part 10 progresses to step S130, without performing step S120. Thereby, when the distance from the own vehicle position to the nearest guidance point is a predetermined value or more, the enlarged intersection map 21 is not displayed.

  In step S130, the control unit 10 determines whether or not the host vehicle has arrived at the destination. When arriving at the destination, the flowchart of FIG. 3 is terminated. On the other hand, if the destination has not yet been reached, the process returns to step S40 and the above processing is repeated. As a result, the contents of the map displayed in step S50, the summary map displayed in step S100, and the intersection enlarged view displayed in step S120 are updated according to the new vehicle position detected in step S40.

According to 1st Embodiment described above, there exists the following effect.
(1) The navigation device 1 sets a destination by the processing of the control unit 10 (step S10), and detects the vehicle position (step S40). Then, a summary map representing the route from the vehicle position to the destination is created (step S90), and the summary map, the normal map, and the intersection enlarged view are simultaneously displayed on the display monitor 16 (steps S100, S50). , S120). Since this is done, it is possible to inform the driver of the route from the vehicle position to the destination in an easy-to-understand manner.

(2) The navigation device 1 selects a target road for summarization from roads connected to the route by the processing of the control unit 10 (step S80). In step S90, a summary map is created by simplifying the shape of the target road and route. Since it did in this way, the summary map which expressed the mode of the route from the own vehicle position to the destination clearly can be created.

(3) In step S80, when a plurality of roads connected to the route are adjacent to each other, the control unit 10 can select any one of the plurality of roads as a target road for summarization. In this way, when there are roads that are adjacent enough to overlap each other on the summary map, it is possible to provide an easy-to-read summary map without displaying one of them.

(4) In step S80, the control unit 10 may select the target road for summarization based on the type of road connected to the route and the distance between the road connected to the route and the vehicle position or the destination. it can. In this way, it is possible to select an appropriate road as a target road for summarization in order to easily express the state of the route from the vehicle position to the destination on the summary map.

(5) The navigation device 1 sets a guidance point on the route by the processing of the control unit 10 (step S30). In step S80, the road to be summarized is selected with priority given to the road connected to the route at this guidance point. Since it did in this way, the advancing direction of the own vehicle in a guidance point can be displayed on a summary map clearly.

  In the first embodiment described above, the enlarged intersection map is displayed when the distance from the vehicle position to the guidance point is less than a predetermined value. An enlarged intersection map may always be displayed regardless of the distance. Or you may switch the display of an intersection enlarged view according to a user's operation.

-Second Embodiment-
Next, a second embodiment of the present invention will be described. The navigation device according to the present embodiment creates summary maps for a plurality of routes from the vehicle position to the destination, and simultaneously displays the created summary maps. Thus, the driver is informed of the state of the plurality of routes in an easy-to-understand manner. The configuration of the navigation device according to the present embodiment is the same as that of the navigation device 1 according to the first embodiment shown in FIG. Therefore, the following description will be performed using the configuration of the navigation device 1.

  FIG. 4 is an example of a map screen displayed on the display monitor 16 in the navigation device 1 of the present embodiment during route guidance. As shown in FIG. 4, the navigation device 1 divides the screen of the display monitor 16 into three screen areas, and displays a normal map 22 in the central screen area as in FIG. 2. In addition, summary maps 23 and 24 representing different routes are displayed in the left screen area and the right screen area, respectively. The summary map 23 is the same as that displayed in the screen area on the right side of the map screen of FIG.

  The summary map 23 represents a route from the vehicle position 30 to the destination 32 via the guide points 34, 35, 36 and 37. At the guidance point 34, an icon 33 indicating a facility as a landmark is displayed. In addition, traffic jam information 53 is displayed in front of the guidance point 36. The route represented by the summary map 23 is indicated by a solid line on the map 22.

  On the other hand, the summary map 24 represents a route to the destination 32 via the guide points 34, 38 and 37. The guidance point 34 displays an icon 33 indicating a landmark facility as in the summary map 23. In addition, traffic jam information 51 and 52 is displayed near the guidance point 38. The route represented by the summary map 24 is indicated by a broken line on the map 22.

  FIG. 5 shows a flowchart of processing executed when displaying the map screen as described above. This flowchart is executed by the control unit 10. In the flowchart of FIG. 5, the same step numbers are assigned to the processing steps having the same contents as those in the flowchart according to the first embodiment shown in FIG. In the following, description of FIG.

  In step S21, the control unit 10 searches for a plurality of recommended routes from the departure point to the destination set in step S10. At this time, for example, a plurality of recommended routes can be searched by setting a plurality of types of route search conditions and obtaining an optimum recommended route under each condition. Alternatively, a plurality of recommended routes may be searched under one route search condition.

  In step S51, the control unit 10 selects one of the plurality of recommended routes searched in step S21. For the route from the vehicle position to the destination among the recommended routes selected in this way, the control unit 10 creates and displays a summary map by executing the processing of steps S60 to S100 as described in FIG. Displayed on the monitor 16.

  In step S101, the control unit 10 determines whether or not a summary map of all routes has been displayed. When the summary map of all routes is displayed, that is, all recommended routes searched in step S21 are selected in step S51, and a summary map showing the route from the vehicle position to the destination is created and displayed for each recommended route. If already displayed on the monitor 16, the process proceeds to step S130. On the other hand, when the summary map of all the routes has not been displayed, the process returns to step S51 to newly select a recommended route, and then the processing of steps S60 to S100 is repeated. As a result, a plurality of summary maps are created and simultaneously displayed on the display monitor 16.

  If it is determined in step S130 that the destination has been reached, the control unit 10 ends the flowchart of FIG. On the other hand, if it is determined that the destination has not yet been reached, the process returns to step S40 and the above processing is repeated.

  According to the second embodiment described above, the control unit 10 creates a plurality of summary maps by creating summary maps for a plurality of routes in step S90. In step S100, the plurality of summary maps created in this way are simultaneously displayed on the display monitor 16. Since it did in this way, the mode of a plurality of courses can be told to a driver clearly.

  In each of the embodiments described above, the summary map representing the route from the vehicle position to the destination is always displayed. However, the summary map is displayed when traffic jam information about the route is acquired. It is good as well. That is, if the VICS information received by the VICS information receiving unit 15 includes traffic jam information at any point on the route from the vehicle position to the destination, a summary map is displayed on the display monitor 16. The traffic jam information is displayed on the summary map. However, when the traffic information on the route is not included, only the normal map or only the normal map and the intersection enlarged view are displayed on the display monitor 16 without displaying the summary map. In this way, when traffic jams occur on the route, the traffic jam information can be easily shown to the driver.

  Further, in each of the embodiments described above, as shown in the map screen of FIG. 2 or FIG. 4, the screen of the display monitor 16 is divided into three screen areas, and each of the divided screen areas is divided into the three types described above. The example which displays the map, ie, the intersection enlarged view 21, the map 22, and the summary map 23, or the map 22, the summary maps 23 and 24 has been described. However, three display monitors 16 may be mounted on the navigation device 1, and the above three types of maps may be displayed on the three display monitors 16. Alternatively, two display monitors 16 may be used, and one of the two screens may be divided into two to display two of the three types of maps and the remaining map to be displayed on the other. In addition to this, the display monitor 16 may have any form as long as three types of maps can be displayed simultaneously.

  Further, in each of the above-described embodiments, a normal map, an enlarged intersection map, and a summary map have been described as examples of the three types of maps displayed simultaneously. However, other maps may be displayed simultaneously. Or you may display four or more types of maps simultaneously. Any map may be used as long as it displays three or more maps including a summary map representing the route from the vehicle position to the destination, and any number of maps may be displayed at the same time.

  In each of the embodiments described above, the navigation apparatus mounted on a vehicle and used has been described as an example, but the present invention is not limited to this. The present invention can be applied to various devices as long as the vehicle is a map display device mounted on a vehicle and displaying a map.

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

1: navigation device, 10: control unit, 11: vibration gyro, 12: vehicle speed sensor,
13: HDD, 14: GPS receiver, 15: VICS information receiver, 16: Display monitor,
17: Speaker, 18: Input device

Claims (12)

Destination setting means for setting a destination;
Own vehicle position detecting means for detecting the own vehicle position;
Summary map creation means for creating a summary map representing a route from the vehicle position to the destination;
A navigation apparatus comprising: display control means for simultaneously displaying three or more maps including the summary map on a display monitor. The navigation device according to claim 1, wherein
The summary map creation means creates a plurality of the summary maps by creating the summary maps for each of a plurality of routes from the vehicle position to the destination,
The navigation apparatus, wherein the display control means simultaneously displays the plurality of summary maps created by the summary map creation means on the display monitor. The navigation device according to claim 1, wherein
The summary map creating means creates the summary map by simplifying the shape of the road including the route based on map data recorded in advance on a recording medium,
The display control means simultaneously displays the summary map, an enlarged view of an intersection within a predetermined distance from the vehicle position, and a road shape map represented by the map data on the display monitor. Navigation device. In the navigation device according to any one of claims 1 to 3,
The navigation apparatus characterized in that the display control means simultaneously displays the three or more maps on the display monitor so as to face each other in the same direction. The navigation device according to claim 4, wherein
The navigation apparatus according to claim 1, wherein the display control means displays the three or more maps on the display monitor in the same predetermined direction. The navigation device according to claim 4, wherein
The vehicle position detection means further detects the direction of the vehicle toward the vehicle position,
The navigation apparatus according to claim 1, wherein the display control means displays the three or more maps on the display monitor in the direction detected by the vehicle position detection means. In the navigation device according to any one of claims 1 to 6,
Road selection means for selecting a target road from roads connected to the route,
The summary map creating means creates the summary map by simplifying the shape of the route and the target road. The navigation device according to claim 7,
The road selection means, when a plurality of roads connected to the route are adjacent to each other, selects any one of the plurality of roads as the target road. The navigation device according to claim 7 or 8,
The navigation apparatus according to claim 1, wherein the road selection means selects the target road based on a type of road connected to the route. The navigation device according to any one of claims 7 to 9,
The navigation apparatus according to claim 1, wherein the road selection unit selects the target road based on a distance between a road connected to the route and the vehicle position or the destination. In the navigation apparatus as described in any one of Claims 7-10,
A guidance point setting means for setting a guidance point on the route;
The navigation apparatus according to claim 1, wherein the road selection means preferentially selects the target road at a road connected to the route at the guidance point. The navigation device according to any one of claims 1 to 11,
It further comprises a traffic information acquisition means for acquiring traffic information,
The navigation apparatus, wherein the display control means displays the summary map when the traffic information on the route is acquired by the traffic information acquisition means.

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