JP4138505B2 - In-vehicle information terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-vehicle information terminal such as a navigation device to which map data is distributed by communication.
[0002]
[Prior art]
A route map display device that detects the current position of the host vehicle and displays a map around it, searches for a route to a set destination, and displays the route on a map around the current position is known. (Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 09-061183
In the above-described route map display device, when the vehicle is away from the route and is outside the range of the display screen, the position of the route on the map cannot be confirmed, and the positional relationship between the current location of the vehicle and the route cannot be understood. .
[0005]
The present invention provides an in-vehicle information terminal that displays a map including a route even when the vehicle leaves the route.
[0006]
[Means for Solving the Problems]
The on-vehicle information terminal according to the invention of claim 1 is a map display control means for displaying a map within a predetermined cutout range from a recommended route from the current location to the destination on a display monitor based on map information distributed from a distribution center. And scroll button display control means for displaying a plurality of scroll buttons for scrolling the map displayed by the map display control means in accordance with the user's operation on the display monitor in each direction. The means includes a display form of a scroll button corresponding to a direction within the cutout range, a scroll button corresponding to a direction outside the cutout range, and a recommended route displayed when the map is scrolled by a predetermined amount according to a user operation. The display mode of the scroll button corresponding to the direction away from the screen is changed and displayed.
According to a second aspect of the present invention, in the in-vehicle information terminal according to the first aspect of the present invention, the vehicle-mounted information terminal further includes use restriction means for disabling a scroll button corresponding to a direction outside the cutout range.
According to a third aspect of the present invention, in the in-vehicle information terminal according to the first aspect, when the map is scrolled by a predetermined amount in accordance with a scroll button corresponding to a direction outside the cutout range and a user operation, the recommended route is obtained. The apparatus further includes use restriction means for disabling the scroll button corresponding to the direction away from the display monitor screen.
A fourth aspect of the present invention is the in-vehicle information terminal according to any one of the first to third aspects, further comprising detection means for detecting the vehicle position, wherein the map display control means is detected by the detection means. If the vehicle position is fixedly displayed at a specific position on the display monitor, the map is displayed at a predetermined scale, and if the recommended route deviates from a predetermined area preset on the display monitor, the map display control means recommends The scale of the map is changed so that the route is displayed in the predetermined area.
According to a fifth aspect of the present invention, in the in-vehicle information terminal according to the fourth aspect, when the recommended route cannot be displayed when the recommended route deviates from the predetermined area, the recommended route is displayed on the display monitor. This is to notify that the image protrudes from the screen.
In the vehicle information terminal according to any one of claims 1 to 5, the invention according to claim 6 provides a new information to the distribution center when the host vehicle is out of the cutout range and the map display control means cannot display the map. It requests map information.
The invention according to claim 7 is the vehicle information terminal according to any one of claims 1 to 6, wherein the communication means communicates with an external communication terminal and makes a call to the outside via the communication terminal; Calling disconnect button display control means for displaying on the display monitor a call button for selecting to make a call via the communication terminal by the communication means and a line disconnect button for selecting to disconnect the line established by the call. And a display switching means for switching a display form between the call button and the line disconnect button according to the use state of the communication terminal.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
-First embodiment-
1st Embodiment of the map information delivery system using the car navigation apparatus by this invention is described. A car navigation device (hereinafter referred to as an in-vehicle device) 100 mounted on the vehicle 1 and a communication terminal 200 are connected to each other by wireless communication using Bluetooth. The communication terminal 200 is connected to the information distribution center 400 via the mobile communication network 300 under the control of the in-vehicle device 100. At this time, radio waves for mobile communication, which are different from wireless communication using the Bluetooth method, are used. The information distribution center 400 receives various requests from the in-vehicle device 100 transmitted from the communication terminal 200, transmits various information such as map data to the communication terminal 200 according to the request content, and supplies the information to the in-vehicle device 100. . Further, the communication terminal 200 can be connected to another communication terminal (not shown), a fixed telephone, or the like via the mobile communication network 300 to transmit and receive voice and various information. As the communication terminal 200, a mobile phone having a Bluetooth communication function, a PDA (Personal Digital Assistance), or the like is used.
[0008]
FIG. 2 is a system block diagram showing the configuration of the in-vehicle device 100. The current location detection device 101 that detects the current location of the vehicle 1 includes, for example, an orientation sensor 101a that detects a traveling direction of the vehicle 1, a vehicle speed sensor 101b that detects a vehicle speed, a GPS sensor 101c that detects a GPS signal from a GPS satellite, and the like. The control circuit 102 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 103 using the RAM 104 as a work area. The image memory 105 stores image data to be displayed on the display monitor 106. The image data includes road map drawing data and various graphic data, and displays map information on the display monitor 106 based on map data transmitted from the information distribution center 400 shown in FIG. On the display monitor 106, a screen for various settings of the in-vehicle device 100, for example, a screen for setting a communication terminal to be used is displayed. Note that a touch panel is used as the display monitor 106, and the user inputs a destination of a vehicle, selects various processes, and the like by selecting an arbitrary position on the screen with a finger or the like.
[0009]
The nonvolatile memory 107 is a memory that stores various types of information such as map data received from the information distribution center 400. The nonvolatile memory 107 can hold the stored data even when the power of the in-vehicle device 100 is turned off. For this, for example, a flash memory or the like is used. The Bluetooth communication device 108 is a device that performs Bluetooth communication with the communication terminal 200. Via the Bluetooth communication device 108, the communication terminal 200 is controlled from the in-vehicle device 100, and various data are transmitted and received between the control circuit 102 and the communication terminal 200.
[0010]
FIG. 3 is a system block diagram showing the configuration of the information distribution center 400. The information distribution center 400 is connected to the mobile communication network 300 via the external interface 401. The request reception server 402 receives a request for route search or the like sent through the external interface 401 and requests each server described later to execute each process such as a route search request and a map request. In addition, the processing result output from each server is output to the external interface 401.
[0011]
The map distribution server 403 stores map data in a storage medium such as a hard disk, and in accordance with a map request from the request reception server 402, searches for corresponding map data from the stored map data and outputs it to the request reception server 402. To do. The route search server 404 searches for the corresponding route according to the route search request from the request reception server 402 based on the vehicle position information from the location information search server 405, the traffic information database from the traffic information server 406, and the like. Is output. The position information search server 405 also has a function of searching for facility information in the vicinity of a predetermined point. The traffic information server 406 holds a database of current traffic information. The customer DB server 407 holds personal data of customers who own the vehicle-mounted device 100 and updates the personal data according to the usage status of the information distribution center 400. The personal data includes, for example, billing information.
[0012]
FIG. 4 shows a data flow when a route search request is made. When the destination is set by the user operating the display monitor 106, the in-vehicle device 100 issues a route search request. A route search request issued from the in-vehicle device 100 is transmitted to the information distribution center 400 via the communication terminal 200 and the mobile communication network 300. The route search request received at the information distribution center 400 passes through the external interface 401 and then is input to the request reception server 402, where the content is recognized. The request reception server 402 first makes a route search request to the route search server 404. The route search server 404 performs a route search based on the vehicle position information from the position information search server 405 and the traffic information from the traffic information server 406, and returns a route search result to the request reception server 402. The request reception server 402 that has received the route search result from the route search server 404 then outputs a map request for the route to the map distribution server 403. The map distribution server 403 extracts map information obtained by cutting out a certain range along the route by a method to be described later, from the stored map data, and returns the map information to the request reception server 402.
[0013]
In this way, the request reception server 402 that has obtained the map information outputs the route guidance data and map information data of the route search result to the external interface 401. The output data is transmitted to the in-vehicle device 100 via the mobile communication network 300 and the communication terminal 200. The in-vehicle device 100 displays the transmitted information as an image and provides it to the user. In this way, a series of processing for route search is completed.
[0014]
FIG. 5 shows a method of cutting out a map in a cutout region within a predetermined distance from a set range along the set route, that is, a recommended route. When the destination is set in the in-vehicle device 100, the route search server 404 sets the current location 52 and the destination 53, and a recommended route 54 connecting between the current location 52 and the destination 53 is set by a known route search calculation process. The cutout range 55 in this route is set as a portion within a certain range from the route 54, for example, a range indicated by shading in the drawing. In addition, a wider range is set around the current location 52 and the destination 53 than on other routes. The map data in the area of the cutout range 55 is extracted for each mesh of the mesh 51 obtained by dividing the map into predetermined ranges, and distributed from the information distribution center 400 to the in-vehicle device 100 as map information data.
[0015]
In this way, based on the distributed map information data, the in-vehicle device 100 displays a map within a predetermined distance from the recommended route on the display monitor 106. The user is guided to the destination based on the displayed map.
[0016]
An example of the map displayed on the display monitor 106 is shown in FIG. The display indicated by reference numeral 61 indicates the current location of the vehicle 1, and the direction of the arrow at the current location 61 indicates the traveling direction of the vehicle 1. A road denoted by reference numeral 62 indicates a route from the current position to the destination, and the display color of the route 62 is changed from that of other roads. The display indicated by reference numeral 63 or 64 is a call display icon indicating the call state of the communication terminal 200. The call display icon 63 in FIG. 6A indicates that a call is in progress, and the call display icon 64 in FIG. 6B indicates that a call is not in progress. A portion indicated by reference numeral 65 indicates a map display portion where a map is displayed, and a portion indicated by reference numeral 66 indicates an information display portion where information other than the map such as various icons is displayed. In addition to the call display icon 63 or 64, various information is displayed on the information display portion 66 depending on the situation, but illustration and description thereof are omitted here.
[0017]
When the communication terminal 200 makes a call, the communication terminal 200 is in a call. A method for making a call by controlling the communication terminal 200 by the in-vehicle device 100 will be described below. First, the telephone operation screen shown in FIG. The telephone operation screen shown in FIG. 7 is such that the menu screen shown in FIG. 8 is displayed by pressing an operation button (not shown) provided in the in-vehicle device 100, and then the telephone icon indicated by reference numeral 81 on this menu screen is selected. Can be displayed.
[0018]
Next, the telephone number of the call destination is entered on the telephone operation screen of FIG. Each time one of the number buttons indicated by reference numeral 71 is selected, the number corresponding to the selected button is sequentially displayed on the telephone number display portion indicated by reference numeral 72, and the telephone number of the call destination can be input. In this way, when all the telephone numbers of the call destination are input and the call button 73 is selected in a state where the telephone number is displayed on the telephone number display section 72, the communication terminal 200 can make a call. At this time, a line with the call destination is established via the mobile communication network 300, and various communications such as a call can be performed. When the line established by the call is disconnected and the communication with the call destination is terminated, a line disconnect button indicated by reference numeral 74 is selected.
[0019]
In addition to the above method, the telephone number of the call destination may be input using buttons indicated by reference numerals 75 to 77. Reference numeral 75 denotes a call history button. When this button is selected, a predetermined number of telephone numbers of call destinations by the communication terminal 200 are displayed in a list in the past. Reference numeral 76 denotes an incoming call history button. When this button is selected, a predetermined number of telephone numbers of callers that have been received by the communication terminal 200 in the past are displayed in a list. Reference numeral 77 denotes a telephone directory button. When this button is selected, a list of telephone numbers registered in the communication terminal 200 is displayed. When one of the telephone numbers displayed by these buttons 75 to 77 is selected, the telephone number is input and displayed on the telephone number display unit 72. At this time, if the call button 73 is selected, a call can be made using the communication terminal 200.
[0020]
The display of the call button 73 and the line disconnect button 74 is switched depending on the use state (call state) of the communication terminal 200. FIG. 7A shows a display state when the communication terminal 200 is in a call, and FIG. 7B shows a display state when the communication terminal 200 is not in a call. This indicates that the display of the call button 73 and the line disconnect button 74 corresponds to the state during the call and the state during the non-call, respectively, and the one different from the use state of the communication terminal 200 is blacked out. In this way, it can be easily confirmed whether or not a call is in progress. Also, the display of the call display icons 63 and 64 in FIG. 6 is switched depending on whether the communication terminal 200 is busy or not, and either one is displayed.
[0021]
In FIG. 6, the current location 61 is fixed at the same position on the screen. When the vehicle 1 moves, the position of the current location 61 on the map is moved by scrolling the map vertically and horizontally accordingly. Therefore, when the vehicle 1 moves and moves away from the road indicated by the route 62, the route 62 may protrude from the screen, and the positional relationship between the current location 61 and the route 62 may not be known. In order to avoid this, in the present embodiment, an area is set on the map, and when the route is located outside the area, the scale of the map is switched to display a wider area map. This will be described below with reference to FIG.
[0022]
FIG. 9 is an example of a simplified map displayed on the display monitor 106 when the vehicle 1 is away from the route. Reference numeral 91 indicates the current location of the vehicle 1, and reference numeral 92 indicates a route from the current location to the destination. When the vehicle 1 gradually moves away from the road indicated by the route 92, the current location 91 and the route 92 on the map gradually move away from each other in FIG. 9A. At this time, the path 92 moves toward the edge of the screen, and the path 92 is positioned outside the area indicated by reference numeral 93. In this case, the map scale is switched to display FIG. 9B, which is a map of a wider area than FIG. 9A. As a result, the path 92 moves toward the center of the screen, and the path 92 can be prevented from protruding from the screen. Note that the area 93 is an area that is internally set for processing, and is not actually displayed.
[0023]
FIG. 10 shows a processing flow when the map scale is switched in this way. The processing flow of FIG. 10 will be described below with reference to FIG. This flowchart is a processing flow based on a program executed by the control circuit 102, and is executed when the vehicle 1 moves a predetermined distance. In step S1, the position of the current location 91 is updated based on the detection result of the current location detection device 101, a map to be displayed on the display monitor 106 at this time is calculated, and the route 92 is within the area 93 in the calculated map. Determine which is out of range. When it is within the range, the process proceeds to step S3, and when it is out of the range, the process proceeds to step S2. At this point, the map display position is not updated yet.
[0024]
In step S2, the scale of the map to be displayed is switched, the map shown in FIG. 9A is changed to the map shown in FIG. 9A, and the map in FIG. To do. That is, for example, if the map that has been displayed so far has a scale of 1 / 25,000, and the map of a wide area that is one level lower than that has a scale of 1 / 50,000, in step S2, this 50,000 / min. Switch to 1 scale map. Thereby, the space | interval of the present location 91 and the path | route 92 on a screen becomes short, and the path | route 92 moves to the center side (direction of the present location 91) of a screen, and is displayed. If there is no map of a wider area than the map displayed so far, the process proceeds to the next step S3 without switching the scale of the map to be displayed. At this time, the user may be notified by voice or image that the route is protruding from the screen.
[0025]
In step S3, the map display position is updated. At this time, the position of the current location 91 on the screen is fixed, and the map scrolls up / down / left / right in accordance with the position of the current location 91 on the map. When the map display position is updated, the process of step S3 is terminated, and the process flow of FIG. 10 is terminated.
[0026]
In this way, when the current location and the route are separated from each other by a certain range on the map, the map scale is switched to display a wider map to prevent the route from protruding from the screen.
[0027]
In the above description, the map displayed on the display monitor 106 has been distributed from the information distribution center 400, which is cut out from a certain range near the route 92 as described above. Therefore, a map cannot be displayed for a portion other than the cut out range. For this reason, if the vehicle 1 is out of the range cut out of the map, a map in the vicinity cannot be displayed. In this case, it is possible to prompt the user to request the information distribution center 400 for a new map by notifying the user that there is no map by voice or an image. When a route search request is made based on the position of the vehicle 1 at that time by a user operation, a new route and a map near the route are distributed from the information distribution center 400. Alternatively, when the vehicle 1 is out of the range where the map is cut out and a nearby map cannot be displayed, the in-vehicle device 100 may automatically request a new map from the information distribution center 400. In this case, whether or not to request a new map may be displayed on the display monitor 106 and may be selected by the user.
[0028]
In addition, although the example where the position on the screen of the current location is fixed has been described above, the position of the current location on the screen can be arbitrarily moved by scrolling the map by a user operation. This method will be described using an example of the scroll operation screen shown in FIG. 11 displayed on the display monitor 106. In FIG. 11, the current location indicated by reference numeral 111 and the route indicated by reference numeral 112 are displayed on the map. Further, a graphic indicated by reference numeral 113 is a scroll button, and is composed of 8-direction buttons 113a to 113h. When the user arbitrarily selects these scroll buttons, the part displayed on the map can be moved in the direction indicated by the button, that is, the map can be scrolled in the direction opposite to the buttons. For example, when the scroll button 113a is selected, the map is scrolled downward in the figure, and a portion of the map positioned above the previously displayed map is displayed.
[0029]
Whether or not to display the scroll button 113 can be arbitrarily switched by a user operation. By this switching operation, a map display screen in which the scroll button 113 is not displayed and a scroll operation screen in which the scroll button is displayed are switched.
[0030]
Here, the map that is scrolled by the scroll button 113 is distributed from the information distribution center 400, and is cut out from a certain range near the route as described above. Therefore, a map cannot be displayed for a portion other than the cut out range. For this reason, when the map after scrolling cannot be displayed, the scroll button in that direction cannot be used. At this time, by changing the display form of the scroll buttons that can be used and the scroll buttons that cannot be used, for example, the color, the user can recognize the scrollable direction. In FIG. 11, the scroll buttons 113a to 113e can be used, but the scroll buttons 113f to 113h whose colors have been changed cannot be used because there is no map in that direction. Further, even when the route protrudes from the screen after scrolling, the scroll buttons cannot be used by the same method as described above.
[0031]
FIG. 12 shows a processing flow when the map is scrolled in this way. The processing flow of FIG. 12 will be described below with reference to FIG. This flowchart is a processing flow based on a program executed by the control circuit 102, and is executed when a scroll operation screen is selected by the user. In step S11, a surrounding check for the presence of the surrounding map and a route check for the route display range are performed. In the peripheral check, it is determined whether or not there is a map to be displayed when the map is scrolled by a predetermined amount in the eight directions around the currently displayed map. This map is distributed from the information distribution center 400 and stored in the nonvolatile memory 107. In the route check, it is determined whether or not the route 112 protrudes from the screen when the map is scrolled by a predetermined amount in the eight directions around the currently displayed map. When there is no map to be displayed in the peripheral check, or when the route 112 protrudes from the screen in the route check, the direction is stored in the RAM 104.
[0032]
In step S12, the scroll button for moving the display range of the map in the direction stored in the RAM 104 in step S11 is disabled. For example, when the left direction is stored in the RAM 104 in step S11, the corresponding scroll button 113g indicating the left direction is disabled. Furthermore, the display form of the scroll buttons that cannot be used is changed, and for example, the scroll buttons 113f to 113h are changed to a color different from the usable scroll buttons 113a to 113e.
[0033]
In step S13, it is determined whether or not to end the scroll operation screen. When the user exits the scroll operation screen and switches to the map display screen, the scroll button 113 is turned off and the processing flow of FIG. On the other hand, if any of the scroll buttons 113a to 113e for which scrolling is effective is selected by the user, the process proceeds to step S14 without ending the scroll operation screen. If it is neither of the above cases, the process stays at step S13 and waits for the user to select either case. Note that even if any of the scroll buttons 113f to 113h is selected by the user, the scroll button cannot be used. Therefore, it is determined that neither is the case, and the process stays at step S13.
[0034]
In step S14, the map display range is moved in the direction of the scroll button selected by the user in step S13. For example, if the scroll button 113a is selected by the user in step S13 among the scroll buttons 113a to 113e, the map display range is moved upward by scrolling the map downward by a predetermined amount. When the map display range is moved in either direction, the process returns to step S11.
[0035]
In this way, when the map after scrolling cannot be displayed, the scroll button in that direction cannot be used to limit the scroll range of the map.
[0036]
In the above description, a touch panel is used as the display monitor 106, but the present invention is not limited to this. For example, the display monitor 106 may be a liquid crystal panel, and a specific part on the screen may be selected by an input device provided in the in-vehicle device 100. Any configuration can be used as long as the display device 106 can display a map and various setting screens and the vehicle-mounted device 100 includes means for selecting a specific part on the screen.
[0037]
According to the in-vehicle information terminal according to the first embodiment described above, the following operational effects can be obtained.
(1) When an area 93 is set on the map displayed on the display monitor 106 and the route 92 is located outside the area 93, the scale of the displayed map is switched to display a wider area map. . As a result, it is possible to prevent the positional relationship between the current location 91 and the path 92 from being lost due to the path 92 protruding from the screen.
(2) Switching display modes of a call button 73 for making a call by the communication terminal 200 and a line disconnect button 74 for cutting the line of the communication terminal 200 established by the call depending on the use state of the communication terminal 200. did. As a result, it can be easily confirmed whether the communication terminal 200 is busy.
(3) When the scroll button 113 for scrolling the map in an arbitrary direction is displayed on the display monitor 106 and the map after scrolling cannot be displayed, the scroll button in that direction cannot be used and cannot be used as a usable scroll button. The display form of the scroll button was changed. As a result, scrolling in a direction in which the map cannot be displayed is limited, and the scrollable direction can be recognized.
[0038]
In the above embodiment, the navigation device that receives and displays a distributed map by a wirelessly connected communication terminal has been described. However, the present invention is an in-vehicle device that is connected to a communication terminal by wired communication and distributes map data. It can also be applied to an information terminal for a vehicle, and can also be applied to an in-vehicle information terminal using map data stored in various storage media. Further, in the above embodiment, the current position detection device 101 as the detection means, the information distribution center 400 as the route calculation means, the control circuit 102 as the display control means, the display switching means and the scroll means, the Bluetooth communication device 108 as the communication means, and the display. Each means is realized by the display monitor 106. However, these are merely examples, and each component is not limited to the above-described embodiment as long as the characteristics of the present invention are not impaired.
[0039]
【The invention's effect】
According to the present invention, it is possible to prevent the positional relationship between the current location and the route from being lost due to the route protruding from the screen.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a map information distribution system. FIG. 2 is a block diagram showing a configuration of an in-vehicle device. FIG. 3 is a block diagram showing a configuration of an information distribution center in the map information distribution system. FIG. 5 is a diagram showing a flow of data at the time of request. FIG. 5 is a diagram showing a method of cutting out a map within a certain range along a route. FIG. 6 is a diagram showing an example of a map to be displayed. When a call is in progress, (b) shows a time when the communication terminal is not in a call.
7A and 7B are diagrams illustrating a telephone operation screen, in which FIG. 7A illustrates a case where the communication terminal is in a call and FIG. 7B illustrates a case where the communication terminal is not in a call.
FIG. 8 is a diagram showing a menu screen to be displayed. FIG. 9 is a diagram showing a simplified example of a map displayed when the vehicle is away from the route. FIG. (B) shows a map of a wider area after switching the scale.
FIG. 10 is a diagram showing a processing flow when switching the scale of a map. FIG. 11 is a diagram showing an example of a scroll operation screen. FIG. 12 is a diagram showing a processing flow when scrolling a map.
DESCRIPTION OF SYMBOLS 1 Vehicle 100 In-vehicle apparatus 200 Communication terminal 300 Mobile communication network 400 Information distribution center

Claims (7)

Map display control means for displaying a map within a predetermined cutout range on a display monitor from a recommended route from the current location to the destination based on map information distributed from the distribution center;
Scroll button display control means for displaying a plurality of scroll buttons for scrolling the map displayed by the map display control means in accordance with a user operation on the display monitor in each direction ;
The scroll button display control means scrolls the map by a predetermined amount in accordance with a scroll button display mode corresponding to a direction within the cutout range, a scroll button corresponding to a direction outside the cutout range, and the user's operation. An in-vehicle information terminal, wherein the recommended route is displayed by changing a display form of a scroll button corresponding to a direction in which the recommended route deviates from the screen of the display monitor. The in-vehicle information terminal according to claim 1 ,
An in-vehicle information terminal further comprising a use restriction unit that disables use of a scroll button corresponding to a direction outside the cutout range. The in-vehicle information terminal according to claim 1 ,
A scroll button corresponding to a direction outside the cutout range, and a scroll button corresponding to a direction in which the recommended route deviates from the screen of the display monitor when the map is scrolled by a predetermined amount according to the user's operation. An in-vehicle information terminal further comprising a use restriction means for disabling use. The in-vehicle information terminal according to any one of claims 1 to 3 ,
It further comprises detection means for detecting the vehicle position,
The map display control means fixedly displays the vehicle position detected by the detection means at a specific position on the display monitor, and displays the map at a predetermined scale rate.
When the recommended route deviates from a predetermined area set in advance on the display monitor, the map display control means changes the scale ratio of the map so that the recommended route is displayed in the predetermined area. An in-vehicle information terminal. The in-vehicle information terminal according to claim 4 ,
When the recommended route deviates from the predetermined area, if a map of a wider area than the map that has been displayed up to now cannot be displayed, it is notified that the recommended route protrudes from the screen of the display monitor. Information terminal. In the in-vehicle information terminal according to any one of claims 1 to 5 ,
An in-vehicle information terminal that requests new map information from the distribution center when the own vehicle is out of the cutout range and the map display control means cannot display the map. The in-vehicle information terminal according to any one of claims 1 to 6 ,
A communication means for communicating with an external communication terminal and making a call to the outside via the communication terminal;
Call disconnection for displaying on the display monitor a call button for selecting to make a call via the communication terminal by the communication means and a line disconnect button for selecting to disconnect the line established by the call Button display control means;
An in-vehicle information terminal comprising: a display switching unit that switches a display form between the call button and the line disconnect button according to a use state of the communication terminal.

Images