JP2011043383A - Navigation device, navigation method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device 20 performing emphasized display of information on facilities located on the left side of a road with respect to the direction of traveling of the own vehicle, when it becomes difficult for the vehicle to drop in facilities located on the right side. <P>SOLUTION: This navigation device 20 has: a map data storage 27; a facility information storage 21 for storing, for each facility ID, coordinates of the facility and an icon for the facility; a current position calculation part 26 for calculating the current position and the traveling direction of the vehicle; a facility ID extraction part 23 for extracting from the map data storage 27 information on the road where the vehicle travels, and extracting from the facility information storage 21 facility IDs for the facilities located on the left side of the road with respect to the traveling direction of the vehicle, when the road fulfills predetermined conditions; and a display controller 22 for extracting from the facility information storage 21 the icons for the facilities corresponding to the facility IDs extracted by the facility ID extraction part 23, and displaying the extracted icons in a mode different from that for icons of the other facilities. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for providing a user with information on a facility that is mounted on a moving body such as a vehicle and is present near a running road.

  Patent Document 1 below discloses an in-vehicle navigation device that displays only landmarks of facilities located on the left side in the traveling direction of the host vehicle from facilities existing around the guidance route.

JP 2001-116565 A

  By the way, on a narrow road, even if the facility is on the right side of the road in the traveling direction, it may not be so difficult to stop by compared to the facility on the left side. In such a case, it may be beneficial for the driver to provide information about the facility even if the facility is on the right side of the road in the direction of travel. is there.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to highlight information on the facility on the left side when it is difficult to stop at the facility on the right side of the road with respect to the traveling direction. There is to do.

  In order to solve the above-described problem, a first aspect of the present invention is a navigation device mounted on a vehicle, which stores link data that is information about a link indicating a road and map data that is information about a map. Data storage means, facility information storage means for storing coordinates of the facility and an icon indicating the facility in association with a facility ID for identifying each facility, and current position calculation for calculating the current position and traveling direction of the vehicle Information on the road on which the vehicle is traveling is extracted from the map data storage means based on the current position and the traveling direction of the vehicle calculated by the current position calculating means, and the road on which the vehicle is traveling is determined in advance. If the condition is satisfied, the facility ID of the facility located on the left side of the road in the traveling direction of the vehicle is extracted from the facility information storage means. When the facility ID is extracted by the ID extraction unit and the facility ID extraction unit, the facility icon corresponding to the extracted facility ID is extracted from the facility information storage unit, and the extracted icon is extracted by the facility ID extraction unit Provided is a navigation device comprising display control means for displaying in a manner different from the facility icon corresponding to the facility ID that has not been performed.

  According to a second aspect of the present invention, there is provided a navigation method in a navigation device mounted on a vehicle, wherein the navigation device calculates a current position and a traveling direction of the vehicle at a current position calculation step and a current position calculation step. Based on the calculated current position and traveling direction of the vehicle, information relating to the road on which the vehicle is traveling is extracted from map data storage means for storing link data that is information relating to a link indicating a road and map data that is information relating to a map. When the road on which the vehicle is traveling satisfies a predetermined condition, the facility information storage means stores the coordinates of the facility and an icon indicating the facility in association with the facility ID for identifying each facility, Facility ID for extracting the facility ID of the facility located on the left side of the road in the traveling direction of the vehicle When the facility ID is extracted in the exit step and the facility ID extraction step, the facility icon corresponding to the extracted facility ID is extracted from the facility information storage means, and the extracted icon is not extracted in the facility ID extraction step There is provided a navigation method characterized by executing a display control step of displaying in a different form from the facility icon corresponding to the facility ID.

  According to a third aspect of the present invention, there is provided a program for causing a computer to function as a navigation device mounted on a vehicle, wherein the computer is linked data that is information relating to a link indicating a road and map data that is information relating to a map. A map data storage function for storing the facility, a facility information storage function for storing the coordinates of the facility and an icon indicating the facility in association with the facility ID for identifying each facility, and a current position for calculating the current position and traveling direction of the vehicle Based on the current position and traveling direction of the vehicle calculated by the position calculation function and the current position calculation function, information on the road on which the vehicle is traveling is extracted from the map data storage function, and the road on which the vehicle is traveling is determined in advance. The facility ID of the facility located on the left side of the road in the direction of travel of the vehicle When the facility ID is extracted by the facility ID extraction function extracted from the facility information storage function and the facility ID extraction function, the icon of the facility corresponding to the extracted facility ID is extracted from the facility information storage function, and the extracted icon Is provided in a manner different from the icon of the facility corresponding to the facility ID that has not been extracted by the facility ID extracting function.

  According to the navigation device of the present invention, when it is difficult to stop at a facility on the right side of the road with respect to the traveling direction, information on the facility on the left side can be highlighted.

1 is a system configuration diagram illustrating an example of a configuration of a navigation system 10 according to an embodiment of the present invention. It is a figure which shows an example of the data structure of the link table 270 stored in the map data storage part 27. FIG. It is a figure which shows an example of the structure of the data stored in the facility information storage part. It is a conceptual diagram for demonstrating an example of the display of an icon. It is a conceptual diagram for demonstrating the display example of the icon in the case of route guidance, and the display example of the icon in the case of not being route guidance. 4 is a flowchart showing an example of the operation of the navigation device 20. 2 is a hardware configuration diagram illustrating an example of a computer 50 that realizes the function of the navigation device 20. FIG.

  Embodiments of the present invention will be described below.

  FIG. 1 is a system configuration diagram showing an example of the configuration of a navigation system 10 according to an embodiment of the present invention. The navigation system 10 includes a display device 11, an input device 12, a speaker 13, a sensor 14, and a navigation device 20. The navigation device 20 includes a facility information storage unit 21, a display control unit 22, a facility ID extraction unit 23, a route search unit 24, a route guidance unit 25, a current position calculation unit 26, and a map data storage unit 27.

  The map data storage unit 27 stores a link table including link data that is information related to a link indicating a road and map data that is information related to a map. In the link table, for example, as shown in FIG. 2, data relating to a link is stored as mesh data 271 for each predetermined map area. Each mesh data 271 includes a mesh ID 272 that identifies each mesh, link data 273 that is data related to links in the mesh, and the like.

  Each link data 273 is connected to a link ID 274 for identifying each link, a link start node coordinate 275, a link end node coordinate 276, a link road type 277, a link length 278, and a link start node. The start connection link 279 that is identification information of another link, the end connection link 280 that is identification information of another link connected to the end node of the link, the name 281 of the link, and the number of lanes 282 of the link are stored. Yes.

  The sensor 14 is, for example, a GPS (Global Positioning System) receiver, an azimuth sensor, a distance sensor, etc., and measures a GPS signal transmitted from a geodetic satellite, a traveling direction of the vehicle, a moving distance of the vehicle, etc. Is supplied to the current position calculator 26.

  Based on the measurement information supplied from the sensor 14 and the link data stored in the map data storage unit 27, the current position calculation unit 26, for example, every time the vehicle on which the navigation device 20 is mounted moves for a predetermined distance (for example, 10 m). In addition, for example, the current position and traveling direction of the vehicle are calculated by map matching or the like, and information indicating the calculated current position and traveling direction of the vehicle is provided to the facility ID extracting unit 23, the route searching unit 24, and the route guiding unit 25. To do.

  When the search information including the coordinates of the departure point, the destination point, and the waypoint, the search condition, and the like is received from the user via the input device 12 such as a touch panel, the route search unit 24 stores the information in the map data storage unit 27. Based on the search information, for example, an algorithm such as Dijkstra's method is used to search for a route from the departure point to the destination point using an algorithm such as the Dijkstra method, and the search result is displayed via the display control unit 22. It is displayed on the display device 11.

  When the route search unit 24 receives information specifying the route searched for by the user via the input device 12, the facility ID extraction unit 23 and the route guide unit 25 use the route specified by the user as the guide route. Send to. Note that the route search unit 24 may perform a route search using the current position of the vehicle as a departure point.

  When the route guidance unit 25 receives the information indicating the guidance route from the route search unit 24, the route guidance unit 25 acquires the map data near the current position of the vehicle stored in the map data storage unit 27, and uses the acquired map data. The route guidance is started by superimposing the guidance route and the car mark indicating the current position of the vehicle on the map to be sent to the display control unit 22.

  The route guidance unit 25 refers to the current position of the vehicle calculated by the current position calculation unit 26 and the link data stored in the map data storage unit 27, and is within a predetermined distance ahead of the vehicle on the guidance route. In addition, when there is a guide point for which the direction of travel exists, an image related to the guide point is displayed on the display device 11 via the display control unit 22 and sound indicating guidance is reproduced via the speaker 13. To guide the direction to go. Further, the route guidance unit 25 terminates the route guidance when the user gives an instruction to finish the route guidance or when the vehicle arrives near the destination, and notifies the facility ID extraction unit 23 to that effect. To do.

  In the facility information storage unit 21, for example, as shown in FIG. 3, for each facility ID 210 for identifying each facility, a facility coordinate 211 indicating coordinates on the map where the facility is located and icon data 212 corresponding to the facility are stored. Are stored in advance.

  The facility ID extraction unit 23 refers to the map data storage unit 27 based on the current position and traveling direction of the vehicle calculated by the current position calculation unit 26, and extracts information about the road on which the vehicle is traveling (see FIG. 2). To do. Then, the facility ID extraction unit 23 refers to the extracted information and determines whether or not the road on which the vehicle is traveling satisfies a predetermined condition. In the present embodiment, the facility ID extraction unit 23 employs as a predetermined condition whether or not the number of lanes on the road on which the vehicle is traveling is two lanes or more on one side.

  As another example, the facility ID extraction unit 23 determines whether the road type is equal to or higher than a predetermined rank, whether the road width is equal to or higher than a predetermined value, and the like. You may employ | adopt as a defined condition. Here, the type of road refers to a road (for example, a national road) that is managed by an organization that has jurisdiction over a wider administrative division, and a road that is managed by an organization that has jurisdiction over a smaller administrative division ( (For example, municipal roads, etc.) indicate lower ranks.

  When the road on which the vehicle is traveling satisfies a predetermined condition, the facility ID extraction unit 23 determines whether the route search unit 24 is in the course of route guidance. When the route search unit 24 is in the route guidance, the facility ID extraction unit 23 is positioned on the left side of the guidance route with respect to the traveling direction of the vehicle in the guidance route within the first distance in front of the vehicle (for example, within 10 km). The facility ID of the facility to be extracted is extracted from the facility information storage unit 21, and the extracted facility ID is notified to the display control unit 22.

  On the other hand, when route guidance is not performed by the route search unit 24, the facility ID extraction unit 23 is a road having the same name as the traveling road and within a second distance ahead of the vehicle (for example, within 1 km) ), The facility ID of the facility located on the left side of the road with respect to the traveling direction of the vehicle is extracted from the facility information storage unit 21, and the extracted facility ID is notified to the display control unit 22.

  The facility ID extraction unit 23 determines that the route guidance unit 25 has started the route guidance when the route search unit 24 is notified of the guidance route, and is notified of the end of the route guidance from the route guidance unit 25. In this case, it is determined that the route guidance has been completed. Further, when the facility ID of the facility located on the left side with respect to the traveling direction of the vehicle is extracted, the facility ID extracting unit 23 performs the guidance in the facility located on the left side of the guidance route with respect to the traveling direction of the vehicle. It is preferable to extract the facility ID of the facility within a predetermined distance (for example, within 300 m) from the route.

  The display control unit 22 displays the guidance route candidates received from the route search unit 24 on the display device 11. Further, when the display control unit 22 receives the map data on which the car mark indicating the guidance route and the current position of the vehicle is superimposed from the route guidance unit 25, if the facility ID is not notified from the facility ID extraction unit 23. The facility icon on the map indicated by the map data is acquired from the facility information storage unit 21 and further superimposed on the map and displayed on the display device 11.

  In addition, when the display control unit 22 is instructed to display a map by the user via the input device 12 and the facility ID is not notified from the facility ID extraction unit 23, the display near the point instructed by the user Is acquired from the map data storage unit 27, the icon of the facility on the map is acquired from the facility information storage unit 21, and the acquired icon is superimposed on the acquired map and displayed on the display device 11.

  When the facility ID is notified from the facility ID extraction unit 23, the display control unit 22 acquires the facility icon corresponding to the facility ID from the facility information storage unit 21, and the acquired icon is determined in advance. The mode is changed and displayed on the display device 11 together with other icons. The display control unit 22 displays a facility icon corresponding to the facility ID notified from the facility ID extraction unit 23, for example, a color different from the facility icon corresponding to the facility ID not notified from the facility ID extraction unit 23. The icon of the facility corresponding to the facility ID notified from the facility ID extracting unit 23 is obtained by enclosing the icon of the facility corresponding to the facility ID notified from the facility ID extracting unit 23 with a frame or blinking. Are displayed on the display device 11 in a manner different from the icon of the facility that has not been notified.

  Thereby, for example, as shown in FIG. 4A, the navigation device 20 displays the icon 31 and the icon 34 on the left side of the traveling road when the vehicle is traveling on a two-lane road on the right side. Are displayed on the display device 11 in a mode different from the icon 32 and the icon 33 (in the example of FIG. 4A, reverse display).

  Further, for example, as shown in FIG. 4B, the navigation device 20 displays an icon 31 and an icon 34 on the left side of the traveling road when the vehicle is traveling on a road less than two lanes on one side. Are displayed on the display device 11 in the same manner as the icons 32 and 33 shown in FIG.

  When the number of lanes increases, traffic volume may increase or there may be a median strip, and it is often not easy to stop at facilities on the right side of the road. In such a case, the navigation device 20 of the present embodiment displays the facility icon on the left side in a different manner from the other icons, highlights the facility that is easy to stop by, and on roads with a small number of lanes, Normal icon display. Thereby, the navigation apparatus 20 can highlight the information of the facility on the left side when it becomes difficult to stop at the facility on the right side of the road with respect to the traveling direction.

  During route guidance, for example, as shown in FIG. 5A, the display control unit 22 displays the facility icon 41, the icon 43, and the icon 44 on the front left side of the guidance route (thick line in the figure). If the icon 42 is displayed on the display device 11 in a mode different from that of the other icons 42 and the route is not being guided, a road having the same name as the road on which the vehicle is traveling is displayed as shown in FIG. The facility icon 41 and the icon 42 on the left front side are displayed on the display device 11 in a manner different from the other icons 43 and 44.

  In the example of FIG. 5A, the range 45, the range 46, and the range 47 of the guide route indicate the range of the first front distance (for example, 10 km) of the vehicle, and the example of FIG. , A road range 48 and a range 49 having the same name as the road on which the vehicle is traveling indicate a range of a second distance (for example, 1 km) ahead of the vehicle.

  In this way, the navigation device 20 can provide the driver with information on facilities that are easy to stop during the route guidance, and even if the route guidance is not performed, the navigation device 20 continues to travel on the same road. Within the range that can be assumed, it is possible to provide the driver with information on facilities that are easy to stop by.

  FIG. 6 is a flowchart illustrating an example of the operation of the navigation device 20. At a predetermined timing such as when the power is turned on, the navigation device 20 starts the operation shown in this flowchart.

  First, based on the measurement information supplied from the sensor 14 and the link data stored in the map data storage unit 27, the current position calculation unit 26 calculates the current position and traveling direction of the vehicle by map matching, for example. Information indicating the current position and the traveling direction of the completed vehicle is provided to the facility ID extracting unit 23, the route searching unit 24, and the route guiding unit 25 (S100).

  Next, the facility ID extraction unit 23 refers to the map data storage unit 27 based on the current position and traveling direction of the vehicle calculated by the current position calculation unit 26, and extracts information related to the road on which the vehicle is traveling. Then, the facility ID extraction unit 23 refers to the extracted information and determines whether the road on which the vehicle is traveling satisfies a predetermined condition (for example, two lanes or more on one side) (S101). When the predetermined condition is not satisfied (S101: No), the current position calculation unit 26 executes the process shown in step S100 again.

  When the predetermined condition is satisfied (S101: Yes), the facility ID extraction unit 23 determines whether or not the route search unit 24 is in the course of guidance (S102). When route guidance is being performed by the route search unit 24 (S102: Yes), the facility ID extraction unit 23 is located on the left side of the guidance route with respect to the traveling direction of the vehicle in the guidance route within the first distance ahead of the vehicle. The facility ID of the facility to be extracted is extracted from the facility information storage unit 21 (S103), and the extracted facility ID is notified to the display control unit 22.

  Next, the display control unit 22 acquires a facility icon corresponding to the facility ID notified from the facility ID extraction unit 23 from the facility information storage unit 21, and sets the acquired icon in a predetermined mode (for example, reverse display or the like). ) And other icons are displayed on the display device 11 (S105), and the current position calculation unit 26 executes the process shown in step S100 again.

  On the other hand, when the route is not being guided by the route search unit 24 (S102: No), the facility ID extraction unit 23 is a road having the same name as the road that is running and within the second distance ahead of the vehicle. On the road, the facility ID of the facility located on the left side of the road with respect to the traveling direction of the vehicle is extracted from the facility information storage unit 21 (S104). Then, the facility ID extraction unit 23 notifies the display facility 22 of the extracted facility ID, and executes the process shown in step S105.

  FIG. 7 is a hardware configuration diagram illustrating an example of a computer 50 that realizes the functions of the navigation device 20. The computer 50 includes a central processing unit (CPU) 51, a random access memory (RAM) 52, a read only memory (ROM) 53, a hard disk drive (HDD) 54, an input interface (I / F) 55, an output interface (I / F). F) 56 and a media interface (I / F) 57.

  The CPU 51 operates based on a program stored in the ROM 53 or the HDD 54 and controls each unit. The ROM 53 stores a boot program executed by the CPU 51 when the computer 50 is started up, a program depending on the hardware of the computer 50, and the like. The HDD 54 stores programs executed by the CPU 51, data, and the like.

  The input interface 55 receives a signal from the input device 12 or the sensor 14 and sends it to the CPU 51. The CPU 51 controls the input device 12 and the sensor 14 via the input interface 55 and acquires signals from the input device 12 or the sensor 14 via the input interface 55. The output interface 56 outputs the data acquired from the CPU 51 to the display device 11 or the speaker 13. The CPU 51 controls the display device 11 and the speaker 13 via the output interface 56 and outputs the generated data to the display device 11 or the speaker 13 via the output interface 56.

  The media interface 57 reads a program or data stored in the recording medium 58 and provides it to the CPU 51 via the RAM 52. The CPU 51 loads the program from the recording medium 58 onto the RAM 52 via the media interface 57 and executes the loaded program. The recording medium 58 is, for example, an optical recording medium such as a DVD (Digital Versatile Disk) or PD (Phase change rewritable disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory. Etc.

  The CPU 51 of the computer 50 executes the program loaded on the RAM 52, thereby the facility information storage unit 21, the display control unit 22, the facility ID extraction unit 23, the route search unit 24, the route guidance unit 25, and the current position calculation unit. 26 and the functions of the map data storage unit 27 are realized. The ROM 53 or the HDD 54 stores data in the facility information storage unit 21 and the map data storage unit 27.

  The computer 50 reads these programs from the recording medium 58 and executes them. As another example, the computer 50 is provided with a communication function and acquires these programs via a wired or wireless communication line. Also good.

  The embodiment of the present invention has been described above.

  As is clear from the above description, according to the navigation device 20 of the present embodiment, when it is difficult to stop at the facility on the right side of the road with respect to the traveling direction, the information on the facility on the left side is highlighted. be able to.

  In addition, this invention is not limited to above-described embodiment, Many deformation | transformation are possible within the range of the summary.

  For example, when a vehicle is traveling on an expressway, it is rare to stop outside the service area, there is a possibility that facilities that cannot be reached without getting off the expressway may be extracted, and the service area itself is too much For reasons such as not many, the facility ID extraction unit 23 may not execute the process of extracting the facility ID. For example, in step S101 of FIG. 6, it can be realized by adding as a condition whether or not the vehicle is traveling on a road other than a highway.

  Also, if the opposite lane is congested, even if the number of lanes is small, it is difficult to stop at the facility on the right side of the road you are driving, or even if you can stop, it will return to the original road Since it may become difficult, in step S101 in FIG. 6, the facility ID extraction unit 23 may adopt as a condition whether or not the opposite lane is congested.

  Moreover, in step S101 of FIG. 6, the facility ID extraction unit 23 adopts a plurality of conditions and determines whether or not the conditions are satisfied by integrating the degree to which each condition is satisfied. Also good. For example, the facility ID extraction unit 23 may calculate a score indicating the number of lanes on the road being traveled, a score indicating the rank of the road being traveled, a score indicating the width of the road being traveled, and a traffic jam in the opposite lane on the road being traveled. If the total score indicating the degree is calculated and the total is equal to or greater than a predetermined threshold value, the display of the icon of the facility on the left side may be changed assuming that the condition is satisfied.

  In the above-described embodiment, the case where the vehicle passes on the left side of the road has been described in accordance with traffic conditions such as Japan, but the present invention is not limited to this, as in other countries, The present invention can also be applied when the vehicle travels on the right side of the road. In this case, when the traveling road satisfies a predetermined condition, the navigation device 20 displays the facility icon on the right side on the road ahead in a manner different from the icons of other facilities. The predetermined condition is that when the number of lanes being traveled is greater than or equal to a predetermined number of lanes, or when the road being traveled is a predetermined type of road, the width of the road being traveled is determined in advance. This is the case when the value is greater than or equal to the specified value.

DESCRIPTION OF SYMBOLS 10 ... Navigation system, 11 ... Display apparatus, 12 ... Input device, 13 ... Speaker, 14 ... Sensor, 20 ... Navigation apparatus, 21 ... Facility information storage part, 22 ... Display control unit, 23 ... Facility ID extraction unit, 24 ... Route search unit, 25 ... Route guidance unit, 26 ... Current position calculation unit, 27 ... Map data storage unit, 50 ... Computer, 51 ... CPU, 52 ... RAM, 53 ... ROM, 54 ... HDD, 55 ... Input interface, 56 ... Output interface, 57 ... Media interface 58 ... Recording medium

Claims (8)

A navigation device mounted on a vehicle,
Map data storage means for storing link data, which is information related to links indicating roads, and map data, which is information related to maps;
A facility information storage means for storing coordinates of the facility and an icon indicating the facility in association with a facility ID for identifying each facility;
Current position calculating means for calculating a current position and a traveling direction of the vehicle;
Based on the current position and traveling direction of the vehicle calculated by the current position calculating means, information on the road on which the vehicle is traveling is extracted from the map data storage means, and the road on which the vehicle is traveling is determined in advance. A facility ID extracting means for extracting, from the facility information storage means, a facility ID of a facility located on the left side of the road in the traveling direction of the vehicle,
When the facility ID is extracted by the facility ID extraction unit, the facility icon corresponding to the extracted facility ID is extracted from the facility information storage unit, and the extracted icon is not extracted by the facility ID extraction unit. A navigation apparatus comprising: display control means for displaying in a manner different from the facility icon corresponding to the facility ID. The navigation device according to claim 1,
The facility ID extraction means
A navigation device that extracts a facility ID of a facility located on the left side of the road in the traveling direction of the vehicle when the road on which the vehicle is traveling is equal to or more than a predetermined number of lanes. The navigation device according to claim 1,
The facility ID extraction means
A navigation device that extracts a facility ID of a facility located on the left side of the road in the traveling direction of the vehicle when the type of the road on which the vehicle is traveling is a predetermined type. The navigation device according to claim 1,
The facility ID extraction means
A navigation apparatus that extracts a facility ID of a facility located on the left side of the road in the traveling direction of the vehicle when the width of the road on which the vehicle is traveling is equal to or greater than a predetermined value. The navigation device according to any one of claims 1 to 4,
When a guidance route is set by the user, the vehicle further comprises route guidance means for performing route guidance according to the guidance route,
The facility ID extraction means
When the information about the road on which the vehicle is traveling is extracted from the map data storage means, and the road satisfies a predetermined condition,
If route guidance is performed by the route guidance means, the facility ID of the facility located on the left side is extracted for a range less than the first distance ahead of the vehicle on the guidance route;
If route guidance is not performed by the route guidance means, a second distance that is in front of the vehicle on a road having the same name as the road on which the vehicle is traveling and is shorter than the first distance. A navigation apparatus that extracts a facility ID of a facility located on the left side of a range less than the range. The navigation device according to any one of claims 1 to 5,
The display control means includes
The facility icon corresponding to the facility ID extracted by the facility ID extraction means is made different in color, size, or both from the facility icon corresponding to the facility ID not extracted by the facility ID extraction means; Alternatively, the facility icon corresponding to the facility ID extracted by the facility ID extracting unit is displayed by surrounding or blinking the facility icon corresponding to the facility ID extracted by the facility ID extracting unit with the facility ID. A navigation apparatus, characterized by being displayed in a manner different from a facility icon corresponding to a facility ID that has not been extracted by the ID extracting means. A navigation method in a navigation device mounted on a vehicle,
The navigation device is
A current position calculating step for calculating a current position and a traveling direction of the vehicle;
Based on the current position and the traveling direction of the vehicle calculated in the current position calculating step, the vehicle is traveling from map data storage means for storing link data that is information about a link indicating a road and map data that is information about a map. When the road on which the vehicle is traveling satisfies a predetermined condition, the coordinates of the facility and an icon indicating the facility are associated with the facility ID for identifying each facility. A facility ID extracting step for extracting a facility ID of a facility located on the left side of the road in the traveling direction of the vehicle from the stored facility information storage means;
If the facility ID is extracted in the facility ID extraction step, the facility icon corresponding to the extracted facility ID is extracted from the facility information storage means, and the extracted icon is not extracted in the facility ID extraction step A navigation method, comprising: executing a display control step of displaying in a different form from the facility icon corresponding to the ID. A program for causing a computer to function as a navigation device mounted on a vehicle,
In the computer,
Map data storage function for storing link data that is information about links indicating roads and map data that is information about maps,
A facility information storage function for storing coordinates of the facility and an icon indicating the facility in association with a facility ID for identifying each facility;
A current position calculating function for calculating a current position and a traveling direction of the vehicle;
Based on the current position and traveling direction of the vehicle calculated by the current position calculation function, information on the road on which the vehicle is traveling is extracted from the map data storage function, and the road on which the vehicle is traveling is determined in advance. The facility ID is extracted by the facility ID extraction function that extracts the facility ID of the facility located on the left side of the road in the traveling direction of the vehicle from the facility information storage function, and the facility ID extraction function. The facility icon corresponding to the extracted facility ID is extracted from the facility information storage function, and the extracted icon is the facility icon corresponding to the facility ID not extracted by the facility ID extracting function. A program for realizing a display control function for displaying in different modes.

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