JPH0814924A - In-vehicle map display device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it easy for the user to identify the area or boundary during running. [Structure] Position detection means 2 and map data storage means 1
Boundary crossing judging means 4 for judging that the mobile body has passed the administrative boundary based on the data from, and area name acquiring means 5 for acquiring the area name at least on the side of the moving body traveling direction of the boundary from the boundary data 1n. And a boundary passage notifying means 6 for notifying the passage of the boundary on the screen of the map display means 3 by text and / or voice. Further, it comprises area selection means for selecting an area, boundary data acquisition means for acquiring boundary data of the selected area, and area display means for highlighting a boundary or an area from the acquired boundary data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted map display device such as a navigation system.

[0002]

2. Description of the Related Art Conventionally, a vehicle-mounted map display device of this type is
Boundary data in map data including road data, character / symbol data, water system data, etc. can be discriminated by prefecture boundary, municipal boundary boundary, etc. As shown on the map in different colors or linetypes. By displaying these boundaries and the area names surrounded by boundaries such as prefecture names, municipalities, etc. on the map, the position of the moving body and the area name on the displayed map can be determined.

[0003] In addition, as described in Japanese Patent Application No. 3-205096, this type of vehicle-mounted map display device has an area name and an area name so that a map of prefectures, municipalities, etc. can be displayed with few operations. If you have a table with the center position and recommended display scale and select the area name from the area name list display, the entire area is displayed centered on the position of that area from the center position of the table and the recommended display scale data. As described above, the map can be displayed at an appropriate scale.

[0004]

However, in the above-mentioned conventional vehicle-mounted map display device, the user must determine the area name from the boundary and the prefecture name or the municipality name on the map. Therefore, on the map It is necessary to display many area names on the map, and the boundaries must also be displayed in an easy-to-understand manner on the map, so other character information, lines, graphic information, etc. cannot be displayed due to restrictions, making it difficult to distinguish. There was a problem.

The present invention is intended to solve such a conventional problem, and an object thereof is to provide an on-vehicle map display device which allows a user to easily know a region name or a boundary during traveling. .

[0006]

In order to achieve the above-mentioned object, the present invention provides a boundary passage judging means for judging that a moving body has passed an administrative boundary, and at least a boundary passing direction side of the moving body. An area name acquisition means for acquiring the area name and a boundary passage notifying means for notifying the passage of the boundary by characters and / or voice are provided.

According to the present invention, the area selecting means for selecting the area surrounded by the boundary, the boundary data acquiring means for acquiring the boundary data of the selected area, and the boundary or the area are highlighted from the acquired boundary data. And area display means.

[0008]

Therefore, according to the present invention, the boundary passage determining means determines that the moving body has passed the boundary, and the area name acquiring means acquires the area name after the boundary passage from the boundary data in the map data. Since the boundary passage notifying means notifies that the boundary has been passed and the area name, the user can know that the boundary has been passed and the area name without looking at the map.

Further, according to the present invention, the boundary data acquisition means acquires the boundary data of the area selected by the area selection means from the map data, and the area display means highlights the boundary or the area from the boundary data. It is possible to easily know the area and size of the selected area and the relative position of the own vehicle within the area.

[0010]

【Example】

(Embodiment 1) FIG. 1 is a schematic block diagram of a vehicle-mounted map display device according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 is a map data storage means using a CD-ROM or a semiconductor memory, which stores road data 1a, character / symbol data 1b, water system data 1c, facility shape data 1d, boundary data 1n and the like. . The boundary data 1n includes area names on both sides of the boundary. A position detecting means 2 estimates the current position of the moving body based on the data from the distance sensor and the direction sensor. Alternatively, the position of the moving body separated from the vehicle-mounted map display device is acquired by the communication means. A map display means 3 draws map data around the estimated current position of the moving body in an image memory and displays it on a liquid crystal display or a CRT display. Four
Is a boundary passage determining means for determining that the moving body has passed the administrative boundary from the current position of the moving body and the boundary data 1n, and 5 is the boundary data 1n for the area name on the moving body advancing direction side of the passed boundary. Is a region name acquisition means, and 7 is a boundary passage notifying means for notifying the passage of the boundary by characters and / or voice.

Next, the operation of the above embodiment will be described with reference to FIG. In FIG. 2A, 11 is a screen of the map display unit 3, 12 is a road, 13 is a moving body, 14 is a boundary, and 15 is a name of a region surrounded by the boundary 14. The area name 15 may not be displayed. The boundary passage determining means 4 is the moving body 1 estimated by the position detecting means 2.
Boundary data 1 in the current position 3 and the map data storage means 1
It is determined from n and whether or not the moving body 13 has passed the boundary 14, and if it has passed, the area name acquisition means 5 acquires the area name 15 after passing, and the boundary passage notification means 6 has passed the boundary. The information and the area name after passing are displayed on the screen 11 as shown in FIG. In this case, the guide notification may be voice only or the guide notification may be accompanied by characters and voice.

As described above, according to the above-described embodiment, the fact that the moving body has passed the boundary and the area name thereof are informed by text and / or voice, so that the user can see the boundary without looking at the map. You can easily know that you have passed and the area name.

As shown in FIG. 3, when the interpolation points P of the boundary data 1n of the map data storage means 1 are lined up in order in one direction, the area name on the right side when the interpolation points are in ascending order. And the area name on the left side are stored separately, the area name before the moving body passes through the boundary and the area name after passing the boundary are
It can be determined from the displacement of the position of the moving body and the position of the boundary data. In FIG. 3, for the three boundaries P1 to P5, P5 to P8, and P9 to P13 representing the storage order of the interpolation points, the area names on both sides of the boundary may be stored.

(Second Embodiment) FIGS. 4 and 5 show a second embodiment of the present invention. This embodiment differs from the first embodiment in that the boundary data 1 of the map data storage means 1 is different.
It is only the structure of n ′ and that the area code table 7 is connected to the area name acquisition means 5. Boundary data 1n '
Stores a code indicating the area (area code 16 in FIG. 5) instead of the area name.
The area name is acquired from the area name code table 7 based on the area code 16. Other configurations and operations are the same as those of the first embodiment.
Is the same as

Therefore, according to the present embodiment, the map data storage means 1 need not store only the area name having a large amount of information, but only the area code of only the numbers for judging the area. Since it is not necessary to include the unnecessary area name in the normal map display in the boundary data 1n, there is an advantage that the data reading time is shortened and the map display can be performed quickly. .

(Embodiment 3) FIG. 6 shows a third embodiment of the present invention. In FIG. 6, reference numeral 21 denotes a map data storage means using a CD-ROM or a semiconductor memory, which stores boundary data 21n in addition to road data, character / symbol data, water system data, facility shape data and the like. An area name table 22 stores information such as area names, coordinates of the areas, and scales. Reference numeral 23 is an area name display means, which normally generates a signal for displaying the area name on a display screen on which a map is displayed. Reference numeral 24 is an area selecting means for selecting an area displayed on the display screen.
25 is the coordinates of the area selected from the area name table 22,
It is an area information acquisition unit that acquires a scale and the like. Reference numeral 26 is a boundary data acquisition means for acquiring boundary data of the selected area. Reference numeral 27 denotes an area display means for highlighting a boundary or area from the map data storage means 21 and the acquired coordinates, scale and boundary data of the area. The other functions of the vehicle-mounted map display device are omitted in FIG.

Next, the operation of this embodiment will be described with reference to FIG. When a user who is driving a vehicle that is a moving body wants to display the area where he / she is currently located or the area he is about to go to, he first operates the area name display means 23. Then, as shown in FIG. 7A, the names of the area where the moving body of itself is located and the area in the vicinity thereof are displayed on the display screen, and the area to be displayed is selected by the area selecting means 24. select. Next, the area information acquisition means 25 reads the coordinates, scale, etc. of the selected area from the area name table 22, and the boundary data acquisition means 26 acquires the boundary of the area from the boundary data 21n of the map data storage means 21. . Then, the area display means 27 emphasizes the boundary of the selected area as shown in FIG. 7B according to the coordinates and scale of the selected area and displays it on the display screen.

As described above, according to the present embodiment, since the boundary of the selected area is emphasized and displayed, the shape of the area can be easily understood and each facility etc. on the map can be located in the area. It is possible to easily grasp the relative position within the area such as the position.

In this embodiment, instead of emphasizing the boundary, the entire area surrounded by the boundary may be painted or shaded so as not to obstruct the map display. Further, this embodiment can be carried out in combination with the first and second embodiments.

[0020]

According to the present invention, as is apparent from the above-described embodiment, the fact that the moving body has passed the boundary and the area name thereof are notified, so that the user can see the boundary without looking at the map. You can easily know the passing and the area name. Further, in the vehicle-mounted map display device having the route guidance function, more appropriate route guidance can be provided by calling the user's attention each time the vehicle passes through the boundary of the area to which the destination belongs.

Further, according to the present invention, when the map of the selected area is displayed, the boundary or area is highlighted.
The area and size of the selected area and the relative position of the vehicle within the area can be easily known.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a vehicle-mounted map display device according to a first embodiment of the present invention.

FIG. 2 is a screen diagram showing an example of a display screen in the first embodiment of the present invention.

FIG. 3 is a schematic diagram showing a structure of boundary data according to the first embodiment of the present invention.

FIG. 4 is a schematic block diagram of an on-vehicle map display device according to a second embodiment of the present invention.

FIG. 5 is a screen diagram showing an example of a display screen in the second embodiment of the present invention.

FIG. 6 is a schematic block diagram of an on-vehicle map display device according to a third embodiment of the present invention.

FIG. 7 is a screen diagram showing an example of a display screen in the third embodiment of the present invention.

[Explanation of symbols]

 1 map data storage means 2 position detection means 3 map display means 4 boundary passage determination means 5 area name acquisition means 6 boundary passage notification means 7 area code table 21 map data storage means 22 area name table 23 area name display means 24 area selection means 25 area information acquisition means 26 boundary data acquisition means 27 area display means

Claims (3)

[Claims] 1. A boundary passage judging means for judging that a moving body has passed an administrative boundary from position data of the moving body and boundary data in map data, and an area at least on the moving body traveling direction side of the boundary. An in-vehicle map display device comprising: an area name acquisition unit that acquires a name from the boundary data; and a boundary passage notification unit that notifies a boundary passage by text and / or voice. 2. A boundary code in the map data stores a region code that encodes a region name, and a region code table that stores a region name corresponding to the region code is provided.
The vehicle-mounted map display device according to claim 1, wherein the area name acquisition means acquires the area name from the area code table after acquiring the area code from the boundary data. 3. An area selecting means for selecting an area surrounded by administrative boundaries, a boundary data acquiring means for acquiring boundary data of the selected area from map data, and a boundary or area emphasized from the acquired boundary data. An on-vehicle map display device comprising a display area display unit.