JP2005308475A - Vehicle-mounted information terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for indicating road traffic information allowing to provide a user with the contents of original road traffic information without deteriorating visibility even in an area upon which the contents of road traffic information are concentrated. <P>SOLUTION: When parking-lot marks overlap one another, a plurality of overlapping parking-lot marks are replaced by integrated parking-lot marks 31, 32 as indication marks for indicating parking-lot information indicated by each of the plurality of the parking-lot marks with being integrated into one. For each of the integrated parking-lot marks 31, 32, number indications 33, 34 indicating the number of the parking-lot marks prior to the integration are indicated. The ratio of an area of each color-coded part of the integrated parking-lot marks 31, 32 to the whole is equal to the ratio of the total number for every state of availability to the whole total number of the parking-lot marks prior to the integration. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle information terminal such as a navigation device that displays road traffic information on a road map.

  A navigation device that displays various road traffic information contents using various display marks and provides them to the user, such as displaying a parking mark indicating the parking space availability at the position of each parking lot on the road map. Conventionally known. However, in areas where the content of road traffic information to be displayed is concentrated, for example, in dense parking areas, the display marks may overlap, making it difficult to see the screen. In view of this, there is a navigation device that displays only high-priority information display marks when the display marks overlap with each other so as not to impair the visibility of the screen (Patent Document 1).

JP 2002-107155 A

  In the navigation device disclosed in Patent Document 1, since the display mark of information with low priority among the overlapping display marks is not displayed, there is a problem that the content of the original road traffic information cannot be provided to the user. Therefore, there is a need for a road traffic information display method that can provide the user with the original content of road traffic information without losing visibility even in areas where the content of road traffic information is concentrated.

The in-vehicle information terminal according to the invention of claim 1 is a road traffic information acquisition means for acquiring road traffic information, a road map display means for displaying a road map on a display monitor, and a road traffic information acquired by the road traffic information acquisition means. When displaying a plurality of marks on the display monitor for displaying each of the contents of the road traffic information separately on the road map, and when the mark display means displays a plurality of marks overlapping each other An integrated mark display means for replacing the plurality of marks and displaying an integrated mark for displaying on the road map by integrating the contents of the road traffic information represented by each of the plurality of marks. Is.
According to a second aspect of the present invention, in the in-vehicle information terminal of the first aspect, the mark number display means for displaying the total number of the plurality of marks replaced with the integrated marks by the integrated mark display means on the display monitor for each integrated mark. It is to be prepared.
According to a third aspect of the present invention, in the in-vehicle information terminal according to the first or second aspect, the integrated mark display means is replaced with a plurality of overlapping types of marks, and is in accordance with a ratio of the total number for each type of the plurality of overlapping marks. The integration mark is displayed in the display form.
According to a fourth aspect of the present invention, in the in-vehicle information terminal according to the third aspect, the display form of the integrated mark displayed by replacing with a plurality of overlapping types of marks has a plurality of color-coded portions arranged according to the type of the mark. The ratio of the area occupied by each color-coded portion with respect to the entire integrated mark is equal to the ratio of the total number of each type to the total number of overlapping types of marks.
The in-vehicle information terminal according to the invention of claim 5 displays a road map on a display monitor, and displays on the display monitor an integrated parking lot mark for integrating the contents of the parking lot information for a plurality of parking lots and displaying them on the road map. It is to be displayed.
According to a sixth aspect of the present invention, in the in-vehicle information terminal of the fifth aspect, the total number of parking lots in the contents of the parking lot information represented by the integrated parking lot mark is displayed on the display monitor for each integrated parking lot mark.
According to a seventh aspect of the present invention, there is provided an in-vehicle information terminal according to the fifth or sixth aspect, wherein a display form according to the ratio of the total number of parking lots for each empty situation in the contents of the parking lot information represented by the integrated parking lot mark A parking lot mark is displayed.

  According to the present invention, road traffic information is acquired, and various marks are displayed on the road map based on the road traffic information. When a plurality of marks are displayed in an overlapping manner, the marks are replaced with the plurality of marks. The integrated mark for displaying on the road map by integrating the contents of the road traffic information represented by each of the plurality of marks is displayed. Since it did in this way, the content of original road traffic information can be provided, without impairing visibility, also in the area where the content of road traffic information is concentrated.

  A configuration of a navigation apparatus according to an embodiment of the present invention is shown in FIG. This navigation device is mounted on a vehicle, guides the host vehicle to the destination by searching for a recommended route and displaying a road map, receives VICS information transmitted from the VICS center, and receives the VICS information. The contents of various road traffic information such as parking lot information included in the are displayed on the road map. The navigation device 1 shown in FIG. 1 includes a control circuit 11, a ROM 12, a RAM 13, a current location detection device 14, an image memory 15, a display monitor 16, an input device 17, a VICS information receiving unit 18, and a disk drive 19. The disk drive 19 is loaded with a DVD-ROM 20 on which map data is recorded.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various processes and controls as will be described later by executing a control program stored in the ROM 12 using the RAM 13 as a work area. The current location detection device 14 is a device that detects the current location of the host vehicle. For example, a vibration gyro 14a that detects the traveling direction of the host vehicle, a vehicle speed sensor 14b that detects a vehicle speed, and a GPS sensor that detects a GPS signal from a GPS satellite. 14c and the like. The navigation main body 1 can determine a route search start point to be described later based on the current location of the host vehicle detected by the current location detection device 14.

  The image memory 15 temporarily stores image data to be displayed on the display monitor 16. This image data includes road map drawing data for displaying a road map, various graphic data, and the like, and is received by the map data recorded on the DVD-ROM 20 or the VICS information receiving unit 18 described later. It is created in the control circuit 11 based on the VICS information. When the image data created by the control circuit 11 is output to the image memory 15, a road map is displayed on the display monitor 16, and various road traffic information is displayed on the road map.

  The input device 17 has various input switches for the user to set a destination and a transit point of the vehicle (hereinafter simply referred to as a destination). The input device 17 is realized by an operation panel, a remote controller, or the like. The user can set a destination by specifying a place name, a position on a map, and the like by operating the input device 17 in accordance with a screen instruction displayed on the display monitor 16.

  The VICS information receiving unit 18 receives VICS information transmitted to the navigation device 1 from a VICS information center (not shown). With this VICS information, various road traffic information such as parking lot information, traffic jam information, and traffic regulation information is transmitted to the navigation device 1. The VICS information received by the VICS information receiving unit 18 is output to the control circuit 11, and as described above, the control circuit 11 creates image data for displaying the content of the road traffic information on the road map. In this way, based on the received VICS information, the contents of various road traffic information are displayed on the display monitor 16 separately. The specific display contents at this time will be described later.

  Transmission of VICS information from the VICS information center to the navigation apparatus 1 is performed mainly by radio wave beacons installed on highways, optical beacons installed mainly on general roads, or FM multiplex broadcasting. A radio beacon or an optical beacon transmits VICS information locally by radio waves or light to a vehicle passing near its installation point. In contrast, FM multiplex broadcasting can transmit VICS information to a relatively wide area.

  In the VICS information transmitted from the VICS information center to the navigation device 1 as described above, only road traffic information in a certain area near the current location, for example, the same prefecture is transmitted. For this reason, a base station that can acquire road traffic information of the whole country from the VICS center may be provided, and the road traffic information of the whole country may be distributed from the base station to the navigation device 1 via a mobile phone line or the like.

  The disk drive 19 reads map data for displaying a road map from the loaded DVD-ROM 20. This map data includes route calculation data used for route search, route guidance data used to guide the vehicle to the destination according to recommended routes, such as intersection names and road names, and road data representing roads. include. The map data also includes background data representing map shapes other than roads such as rivers, railways, various facilities on the map (landmarks), and the like.

  In the road data, the minimum unit representing a road section is called a link, and each road is composed of a plurality of links. A point connecting the links is called a node, and each node has position information (coordinate information). The link shape, that is, the shape of the road is determined based on the position information of the node. Although an example using a DVD-ROM is described here, the map data may be read from a recording medium other than the DVD-ROM, such as a CD-ROM or a hard disk.

  When the user operates the input device 17 to set the destination, the navigation device 1 uses the current location detected by the current location detection device 14 as a route search start point and calculates a predetermined algorithm based on the above-described route calculation data. By doing so, a route search from the present location to the destination is performed. The recommended route obtained as a result of the route search is displayed on the road map separately from other roads by changing its display form, for example, display color. Thus, the user can recognize the recommended route on the road map 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 by displaying the road map and guiding the vehicle to the destination according to the recommended route.

  Further, when the VICS information is received by the VICS information receiving unit 18, the navigation device 1 displays the contents of various road traffic information as described above on the display monitor 16 based on the VICS information. For example, the contents of the parking lot information are displayed by displaying the parking lot mark color-coded according to the parking space availability at the position of each parking lot on the road map. As an example of color coding at this time, each parking lot mark is displayed in blue when there is room (empty), orange when there is little (crowded), and red when there is no available (full). . In addition, display marks for representing the contents of other road traffic information such as traffic jam information and traffic regulation information are displayed as images. Thus, each of the contents of road traffic information is separately represented on a road map using various display marks.

  The VICS information transmitted from the VICS center has three levels, level 1 to level 3. The display form when the road traffic information transmitted by the VICS information is displayed differs depending on the level. In the case of level 1, the contents of road traffic information are displayed by characters. For example, a sentence expressing a traffic congestion point name, a traffic congestion distance, a required time between certain points, and the like is displayed by level 1 VICS information. In the case of level 2, the contents of road traffic information expressed using simple graphics (representing road alignment in simple graphics) are displayed. For example, an image showing a traffic jam on a specific road on a simple figure in red or orange is displayed with level 2 VICS information.

  As described above, the road traffic information based on the VICS information of level 1 and level 2 is displayed alone without being combined with the road map. On the other hand, road traffic information based on VICS information of level 3 is displayed in combination with a road map like the parking lot mark described above. As described above, when displaying the image of the road traffic information superimposed on the road map, the level 3 VICS information is used, and the level 1 and level 2 VICS information is not used.

  Next, a specific method for displaying the parking lot mark on the road map will be described. In the level 3 VICS information, the location information and availability of each parking lot are transmitted as the parking lot information. In this vacant state, any one of the above-described empty vehicle, congestion, or full vehicle is set. Based on such parking information, the parking mark color-coded as described above is displayed at the position of each parking lot on the road map, so that the contents of the parking information can be easily displayed on the road map. indicate.

  However, when the parking lot mark is displayed as described above, in a region where the parking lot is dense, etc., a large number of parking lot marks may be overlapped, which may make it difficult to see the screen. FIG. 2 shows the state of the screen at that time. In this screen example, a total of 16 parking lot marks are displayed. Under the parking lot marks 21 and 22 displayed at the top, seven other parking lot marks overlap each other.

  In the screen example of FIG. 2, the color of the parking lot mark 21 is, for example, blue, indicating that it is an empty car. All the parking marks of the same color are empty cars, and there are a total of eight parking marks including the parking mark 21. Similarly, the parking lot mark of the same color as the parking lot mark 23, for example, an orange parking lot mark indicates that it is congested, and there are a total of four. Moreover, the same color as the parking lot mark 22, for example, a red parking lot mark, indicates that the parking lot is full, and there are four in total. In the following description, each of these color-coded parking lot marks is also referred to as an empty mark, a congestion mark, and a full mark. In addition, the mark of the code | symbol 24 is the own vehicle position mark which shows the own vehicle position, and the road of the code | symbol 25 shown with the thick line represents the recommended route.

  In the present invention, when parking lot marks are overlapped and displayed as shown in FIG. 2, the parking lot marks are integrated into one and displayed so that the display is easy to see. FIG. 3 is a diagram showing this state. The display marks indicated by reference numerals 31 and 32 are display marks for integrating and representing the contents of the parking lot information represented by each of a plurality of overlapping parking lot marks in FIG. Hereinafter, such a display mark is referred to as an integrated parking lot mark.

  The integrated parking lot mark 31 is an integrated display of the parking lot mark 21 of FIG. 2 and the seven parking lot marks that overlap therewith. Among the eight parking lot marks before the integration, there are four empty vehicle marks including the parking lot mark 21 and two congestion marks and two full marks. Similarly, the integrated parking lot mark 32 is an integrated display of the parking lot mark 22 in FIG. 2 and the seven parking lot marks that overlap thereunder, and a total of eight parking lot marks are displayed. Consists of 4 empty marks, 2 congestion marks, and 2 full marks.

  The integrated parking lot mark 31 is color-coded in the parts indicated by reference numerals 311, 312 and 313. The color-coded portions 311, 312 and 313 are colored in the same colors as the empty vehicle mark, the congestion mark and the full vehicle mark in FIG. 2, for example, blue, orange and red. By arranging the colors in this way, each color-coded portion of the integrated parking lot mark 31 corresponds to the vacant state of each parking lot mark before integration. That is, the color-coded portion 311 corresponds to an empty vehicle mark, the color-coded portion 312 corresponds to a congestion mark, and the color-coded portion 313 corresponds to a full vehicle mark. In addition, when the integrated parking lot mark includes a case where the availability is unknown, a color-coded portion corresponding to this (for example, gray) may be added.

  Furthermore, the ratio of the area occupied by each of the color-coded portions 311, 312 and 313 to the entire integrated parking lot mark 31 is the total number of the parking lot marks overlapping in FIG. It is equal to the ratio. By setting the area ratio of each color-coded part in this way, the display form of the integrated parking lot mark 31 corresponds to the ratio of the empty situation before integration. That is, the area ratio occupied by the color-coded portions 311 corresponding to a total of four empty vehicle marks is 4/8 = 0.5 with respect to the entire integrated parking lot mark 31 in which a total of eight parking lot marks are integrated. . Similarly, the ratio of the area occupied by the color-coded portion 312 corresponding to a total of two congestion marks and the color-coded portion 313 corresponding to a total of two full marks is the same for the entire integrated parking lot mark 31, respectively. 2/8 = 0.25.

  Moreover, below the integrated parking lot mark 31, as shown by the code | symbol 33, the number (total number) of the parking lot marks before integration is displayed. In the following description, such display is referred to as the number display. This number display 33 shows how many parking lot marks the integrated parking lot mark 31 is integrated. Further, the color-coded portions 311, 312 and 313 described above can understand the ratio of each empty situation to the total number of parking lot marks.

  As for the integrated parking lot mark 32, the color arrangement and the area ratio of the color-coded portions 321, 322, and 323 are determined in the same manner as the integrated parking lot mark 31 described above. A number display 34 indicating the number of parking lot marks before the integration is also displayed. As described above, the integrated parking lot marks 31 and 32 in FIG. 3 are displayed in place of the parking lot marks in FIG. 2, and the number display 33 and 34 are displayed for each integrated parking lot mark. Thereby, overlapping parking lot marks can be combined into one, and the original contents of the parking lot information can be displayed in an easy-to-view manner without impairing the amount of information.

  In order to prevent the integrated parking lot marks from overlapping each other, as shown in FIGS. 2 and 3, the area occupied by the integrated parking lot mark on the road map is the entire overlapping parking lot mark before the integration. Needless to say, it should be smaller than the area occupied above.

  FIG. 4 shows a flowchart of processing executed in the control circuit 11 when displaying the integrated parking lot mark and the parking lot mark as described above on the road map and providing the contents of the parking lot information to the user. In step S1, a road map of a predetermined range is drawn based on the map data recorded on the DVD-ROM 20. In step S2, it is determined whether or not the VICS information (level 3) for the road map range drawn in step S1 has been received. If the VICS information has been received, the process proceeds to the next step S3. On the other hand, if the VICS information has not been received, the processing flow of FIG. 4 ends. In this case, only the road map is displayed on the display monitor 16, and the integrated parking lot mark is not displayed.

  In step S3, the parking lot information included in the received VICS information is extracted. In this parking lot information, the position information and the vacancy status for each parking lot are set as described above. In step S4, any one parking lot is selected in the parking lot information extracted from the VICS information in step S3.

  In step S5, it is determined whether or not the parking lot selected in step S4 is displayed within any overlap determination range when a parking lot mark is displayed. The overlap determination range here is set by executing step S7, which will be described later, and is not yet set when this step S5 is executed for the first time. When the display position of the parking lot mark of the selected parking lot overlaps with one of the overlap determination ranges set at that time, that is, when the parking lot mark is displayed, it is displayed within one of the overlap determination ranges The process proceeds to step S6.

  In step S6, the number of parking lots within the overlap determination range determined to overlap with the parking lot mark in step S5 is counted up. By executing this step S6 for each parking lot, the number of parking lots is counted up by the number of parking lot marks included in each set overlap determination range. At this time, in order to determine the area ratio of each color-coded portion of the integrated parking lot mark later in step S12, the number of parking lots for each empty situation (either empty, crowded or full) is also counted. After executing step S6, the process proceeds to step S9.

  On the other hand, when it is determined in step S5 that the parking mark display position of the selected parking lot does not overlap any overlap determination range, the process proceeds from step S5 to step S7. In step S7, an overlap determination range is set at the parking lot position selected in step S4. Using the overlap determination range, the determination in step S5 described above is executed. In addition, it is preferable that the magnitude | size of the overlap determination range set here is at least the same as that of a parking lot mark or an integrated parking lot mark, or larger than them.

  In the next step S8, the number of parking lots within the overlap determination range set in step S7 is set to 1. The number of parking lots is counted up one by one by executing step S6 described above. After executing step S7, the process proceeds to step S9.

  In step S9, it is determined whether or not all parking lots have been selected in step S4 executed so far. When all the parking lots are selected, the process proceeds to the next step S10. If there is a parking lot that has not yet been selected, the process returns to step S4, and after selecting a new parking lot in step S4, processing as described above is executed for the parking lot.

  In step S10, one of the overlap determination ranges set in step S7 executed so far is selected. In the next step S11, it is determined whether or not the number of parking lots within the overlap determination range selected in step S10 is two or more. As described above, the number of parking lots is sequentially counted up from 1 by executing the process of step S6 for the overlap determination. If the number of parking lots within the selected overlap determination range is 2 or more, the process proceeds to step S12. If not, the process proceeds to step S13.

  In step S12, an integrated parking lot mark and the number display are displayed according to the number of parking lots within the selected overlap determination range. At this time, as described above, the area ratio of each color-coded portion of the integrated parking lot mark is determined according to the number of parking lots for each empty situation. As a result, the integrated parking lot marks 31 and 32 and the number of displays 33 and 34 in FIG. 3 are displayed on the road map on the display monitor 16. After executing Step S12, the process proceeds to Step S14.

  On the other hand, in step S13, a parking lot mark is displayed. Thereby, when the parking lot mark does not overlap, the parking lot mark is displayed on the road map on the display monitor 16 instead of the integrated parking lot mark. After executing step S13, the process proceeds to step S14.

  In step S14, it is determined whether all overlap determination ranges have been selected in step S10 executed so far. When all the overlap determination ranges are selected, the processing flow in FIG. 4 is ended. However, if there is an overlap determination range that has not yet been selected, the process returns to step S10, and after selecting a new overlap determination range in step S10, the process described above is executed for the overlap determination range.

  As described above, by displaying the integrated parking lot mark and the parking lot mark on the road map based on the received VICS information, the contents of the original parking lot information can be easily provided to the user.

According to the embodiment described above, the following operational effects can be obtained.
(1) The parking lot information is extracted from the received VICS information (step S3), and a parking lot mark is displayed on the road map displayed on the display monitor 16 based on the parking lot information. When a plurality of parking lot marks are displayed in an overlapping manner, the integrated parking lot mark is displayed on the road map in place of the plurality of parking lot marks (step S12). Since it did in this way, the content of the original parking lot information can be provided to a user, without impairing visibility, also in the parking lot dense area where a parking lot mark is displayed overlapping.

(2) Since the number display indicating the total number of the plurality of parking lot marks replaced with the integrated parking lot mark is displayed for each integrated parking lot mark (step S12), how many integrated parking lot marks are there? You can see whether the parking mark is integrated.

(3) Each of the integrated parking lot marks is displayed in a display form according to the ratio of the total number of parking lots for each empty situation in the contents of the parking lot information represented by the integrated parking lot mark. Specifically, the ratio of the area occupied by each color-coded portion of the integrated parking lot mark to the entire integrated parking lot mark is the total number of each overlapping parking lot mark before the integration for each empty situation. It was made to become equal to each ratio. Since it did in this way, the ratio of the parking lot mark for every empty situation before integration is known from the display form of the integrated parking lot mark.

  In the above embodiment, the example of displaying the contents of the parking lot information using the parking lot mark or the integrated parking lot mark has been described. However, the present invention may be applied to other road traffic information. For example, the present invention can be applied to a traffic regulation mark that displays the contents of traffic regulation information to display an integrated traffic regulation mark. At this time, in the above embodiment, the integrated traffic regulation mark is color-coded in the same manner as the area ratio of each color-coded portion of the integrated parking lot mark is changed according to the number of parking lots for each empty space, and each color-coded portion The area ratio can be changed according to the total number for each type of traffic regulation. Furthermore, you may make it integrate the content of several road traffic information, such as parking lot information and traffic regulation information.

  Further, the integrated parking lot mark may be displayed in another display form. For example, in the integrated parking lot marks 41 to 43 shown in FIG. 5, a three-dimensional display is provided by adding a shadow, and the height of the three-dimensional display is changed according to the number of integrated parking lot marks. In the example of FIG. 5, the height of the three-dimensional display is changed every ten cases. That is, the integrated parking lot mark 42 in which 12 parking lot marks are integrated is longer than the integrated parking lot mark 41 in which eight parking lot symbols are integrated, so that the shadow portion is longer, and the three-dimensionally higher appearance appears. ing. The integrated parking lot mark 43 obtained by integrating the 24 parking lot marks has a display form that looks higher than these. In this way, just by looking at the integrated parking lot mark, the approximate number of integrated parking lot marks can be determined.

  Or you may make it like the integrated parking lot mark 51 shown in FIG. The integrated parking lot mark 51 is color-coded into color-coded portions 511, 512 and 513. The outermost color-coded portion 511 corresponds to the type of vacancy with the largest number of parking lots in the integrated parking lot mark (in this case, the empty vehicle mark). It corresponds to the type (the order of congestion mark and full mark here). If it does in this way, the order of the number of parking lots for every empty situation will become easier to understand. In addition, the area of each color classification part at this time is constant, and does not change with the number of parking lots.

  Furthermore, in the above-described embodiment, in response to a request from the user such as an integrated parking lot mark being selected by operating the input device 17, the map scale is automatically enlarged so that the parking lot marks do not overlap. You may do it.

  In the above embodiment, the example of displaying the contents of road traffic information acquired by VICS information or distribution from the base station has been described. However, the contents of road traffic information acquired by other methods may be displayed. Good. For example, the location information of a parking lot stored in advance in the map data can be acquired from the map data, and this content can be displayed as road traffic information. Furthermore, the present invention can also be applied to the case where the contents of road traffic information acquired by various methods are displayed simultaneously.

  In the above embodiment, an example is described in which the navigation device performs a route search based on map data recorded on a storage medium such as a DVD-ROM and guides the host vehicle according to the recommended route searched. The present invention is not limited to this content. For example, the present invention can be applied to a communication navigation apparatus that downloads map data from an information distribution center using wireless communication using a mobile phone or the like.

  The present invention is not limited to the above embodiment, and other modes conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

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 a mode that a parking lot mark has overlapped. It is a figure which shows a mode that the overlapping parking lot mark was integrated and the integrated parking lot mark was displayed. It is a flowchart of the process performed when displaying an integrated parking lot mark and a parking lot mark on a road map. It is a figure which shows the example displayed in three dimensions as another display form of an integrated parking lot mark. It is a figure which shows the example of another display form of an integrated parking lot mark.

Explanation of symbols

1 Navigation body 11 Control circuit 12 ROM
13 RAM
DESCRIPTION OF SYMBOLS 14 Present location detection apparatus 15 Image memory 16 Display monitor 17 Input apparatus 18 VICS information receiving part 19 Disk drive 20 DVD-ROM
21-23 Parking lot mark 31, 32 Integrated parking lot mark 33, 34 Number of cases displayed

Claims (7)

Road traffic information acquisition means for acquiring road traffic information;
Road map display means for displaying a road map on a display monitor;
Mark display means for displaying on the display monitor various marks for separately representing the contents of the road traffic information on the road map based on the road traffic information acquired by the road traffic information acquisition means; ,
When a plurality of marks are displayed in an overlapping manner by the mark display means, the contents of the road traffic information represented by each of the plurality of marks are integrated and represented on the road map. And an integrated mark display means for displaying the integrated mark on the display monitor. The in-vehicle information terminal according to claim 1,
An in-vehicle information terminal further comprising mark number display means for displaying a total number of a plurality of marks replaced with the integrated mark by the integrated mark display means on the display monitor for each integrated mark. In the in-vehicle information terminal according to claim 1 or 2,
The integrated mark display means replaces with a plurality of types of overlapping marks, and displays the integrated marks in a display form corresponding to the ratio of the total number of the types of the plurality of overlapping marks. Terminal. The in-vehicle information terminal according to claim 3,
The display form of the integrated mark to be displayed by replacing with a plurality of types of overlapping marks,
It has a plurality of color-coded parts arranged according to the type of the mark,
The in-vehicle information terminal characterized in that the ratio of the area occupied by each color-coded portion with respect to the whole of the integrated mark is equal to the ratio of the total number for each type to the total number of the plurality of overlapping types of marks. Display the road map on the display monitor,
An in-vehicle information terminal characterized in that an integrated parking lot mark for integrating the contents of parking lot information for a plurality of parking lots and displaying it on the road map is displayed on the display monitor. The in-vehicle information terminal according to claim 5,
The in-vehicle information terminal characterized by displaying the total number of parking lots in the contents of the parking lot information represented by the integrated parking lot mark on the display monitor for each integrated parking lot mark. The in-vehicle information terminal according to claim 5 or 6,
The in-vehicle information terminal characterized in that the integrated parking lot mark is displayed in a display form corresponding to the ratio of the total number of parking lots for each empty situation in the contents of the parking lot information represented by the integrated parking lot mark.

Images