JPH02118686A - On-vehicle map displaying device - Google Patents

Abstract

PURPOSE:To make a set mark efficiently function even when a current vehicle position includes positioning errors by displaying the set mark together with an annotation corresponding to a marked point as well as the point when the current vehicle position comes close to the marked point. CONSTITUTION:The marked point and the advancing route of the vehicle for a target point at the marked point are set by a marked point setting means 13 on the map displayed by a map picture displaying means 17, and the annotation of the marked point can be added by an annotation input means 14. When the current vehicle position displayed simultaneously with the map displayed by the map picture display means 17 is within a certain distance from the marked point set by the mark point setting means 13, the annotation of the marked point previously set by the annotation input means 14 is displayed. The correct judgement can thus be made because of the annotation that is displayed together with the mark even if the current vehicle position has an error.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an on-vehicle map display device.

2. Description of the Related Art A conventional in-vehicle map display device will be explained with reference to FIG. In FIG. 3, 31 is a vehicle position detection means, 32 is a map data storage means, 33 is an operation means, 34 is a map screen control means, and 35 is a map screen display means. Next, its operation will be explained. Current position data detected by the vehicle position detection means 31, map data read from the map data storage means 32, landmark point data set by the operating means 33, and for heading to the destination at the landmark point. The map screen is controlled by the map screen control means 34 so that the current position of the vehicle, landmark points, and the course direction to the destination are displayed on the map 42 based on the course direction data of the map screen display means. 35 (Japanese Unexamined Patent Publication No. 199377/1983).

Problems to be Solved by the Invention Conventional in-vehicle map display devices such as those described above set landmarks and directions at intersections etc. on the map in advance, and
It was meant to be displayed. However, since the detected current position of the vehicle includes an error, simply displaying the landmark as a symbol may cause the 1] mark to be recognized as an incorrect location.

The present invention solves the following problems and provides an in-vehicle map display device in which the set 1" mark functions effectively even when the current position of the vehicle includes an error. The purpose is

Means for Solving the Problems The present invention sets a landmark point and the course direction of a vehicle to a destination at the landmark point by a landmark point setting means on a map displayed on a map screen display means, and sets the course direction of the vehicle to the destination at the landmark point. 2, the current position of the vehicle, which is displayed at the same time as the map, is set by the landmark point setting means. The present invention is comprised of an in-vehicle map display device characterized in that, when the vehicle is within a certain distance from the landmark point, an annotation for the landmark point roughly inputted by the annotation input means is displayed.

Function: In the in-vehicle map display device of the present invention configured as described above, the driver or the person who intends to inform the driver of the route to the destination must turn when the driver heads toward the destination. For the location of intersections, branch roads, or buildings that serve as landmarks, you can set landmarks, directions to proceed, and annotations on the map in advance, and when displaying the map along with the vehicle's current location, you can When the vehicle's current position approaches a landmark, an annotation corresponding to the landmark that the vehicle has approached is also displayed, allowing the driver to correctly recognize the route to the destination. It can be made easier to do.

Example Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the in-vehicle map display device of this embodiment. In the figure, reference numeral 11 denotes a vehicle position detection means for detecting the current position of the vehicle, which includes a direction sensor for detecting the direction of travel of the vehicle, a distance sensor for detecting the distance traveled by the vehicle, and a vehicle position detection means based on data from these sensors. It consists of a procedure for detecting the current position. Reference numeral 12 denotes a map data storage means in which map data including road data is stored, and a CD-ROM, cassette, or the like can be used. Reference numeral 13 denotes a landmark setting means for setting landmarks on the map and the course direction to the destination at the landmarks, and includes a touch switch and a keyboard. Reference numeral 14 denotes an annotation input means by which an annotation for the landmark can be inputted, and like 13, it consists of a touch switch and a keyboard. 15 is a landmark point data storage means for storing the landmark point set by the landmark point setting means 13, the traveling direction to the destination at the landmark point, and the annotation for the landmark inputted by the annotation input means 14;
M etc. can be used. Reference numeral 16 denotes a map screen control means for controlling the displayed map screen, which is composed of a CPU and a graphics controller. Reference numeral 17 denotes a map screen display means for displaying a map screen controlled by the map screen control means, and is composed of a CRT display or the like. Next, an explanation will be given of the operation of the embodiment of the present invention configured as described above. Display a map of the area for which you want to set a landmark.Next, mark point setting means 1
3 to enable landmark setting and display the cursor for landmark setting on the map screen display means 17.
Move the cursor to the point where you want to set a landmark and set the landmark. Next, the course direction to the destination at the set landmark point is similarly set by operating the landmark point setting means 13. Next, an annotation for the set landmark is input using the annotation input means 14. The landmark points set as described above, as well as the course direction and annotation to the destination at the landmark points, are stored in the landmark point data storage means 15 as landmark data. A plurality of landmarks can be set by repeating the above operations as necessary. Further, landmarks that are no longer needed are deleted by operating the landmark point setting means 13. When the setting of the landmark is completed, the map screen control means 16 reads map data including the current position of the vehicle detected by the vehicle position detection means 11 from the map data storage means 12, and displays the current position of the vehicle, the landmark point, and the landmark point. It is displayed on the map screen display means 17 together with the course direction to the destination. Vehicle position detection means 11
sequentially detects the current position of the vehicle, and the detected current position of the vehicle is displayed by the map screen control means 16 so as not to leave the map displayed on the map screen display means 17. In addition, the map screen control means 16 compares the current position of the vehicle with the point data of each landmark stored in the "1" mark point data storage means 15, and determines whether the distance between the current position of the vehicle and the landmark point is within a certain value. , and the annotation corresponding to the landmark closest to the current position of the vehicle is controlled to be displayed on the map screen display means 17 at the same time as the map.

FIG. 2(a) is an example in which the current location of the vehicle and landmarks are displayed on the map. In the figure, 201 is a symbol indicating the current position and traveling direction of the vehicle detected by the vehicle position detection means 11, and 2o2 is a mark ['' and the traveling direction to the destination at that point.

FIG. 2(b) is an example where the detected current position of the vehicle includes an error and no annotation is displayed. In the figure, 203 is the current position of the vehicle detected by the vehicle position detection means 11, and 204 is The landmark and the course direction to the destination at that point, 205, are the actual current position of the vehicle. At this time, although the actual vehicle position is at point 205, the current position of the vehicle displayed on the map screen display means 17 is 203, so the driver has already set a landmark at point 204. You will be under the illusion that you have reached the destination and end up turning into the wrong road.

FIG. 2(C) shows a case where the detected current position of the vehicle includes an error, similar to FIG. 2(b), but is an example in which an annotation is displayed by the device in this embodiment. In the figure 206
is the current position of the vehicle detected by the vehicle position detection means 11, 207 is a landmark and the course direction to the destination at that point, 208 is the actual current position of the vehicle, and 209 is an annotation for the landmark 207. A constant distance area 21o from the set landmark 207 is an annotation set for the landmark 2°7. Although the current position of the vehicle detected at this time includes an error, the annotation 210 for the landmark 207 is displayed because the current position 20B of the detected vehicle is close to the landmark 207 and is within the area of the landmark 209. Avoid turning at intersections.

[Effects of the Invention] As described in [2], in the present invention, it is possible to set a landmark on the map and the course direction to the destination at that point, and it is also possible to add annotations to the landmark. When the current position approaches a landmark point, an annotation corresponding to that landmark can be displayed, and even if there is an error in the current position of the detected vehicle, the annotation displayed with the landmark will ensure that the landmark is set. You can judge the location without making a mistake. This allows the driver to check the map when driving the vehicle towards the destination.
The route to the destination can be easily determined by the landmarks and annotations set on the map.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of an in-vehicle map display device according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of screen display in the same embodiment of the present invention, and FIG. 3 is a diagram showing a conventional in-vehicle map display device. FIG. 2 is a configuration diagram of a map display device. 11. Vehicle position detection means, 12. Map data storage means, 13. Landmark point setting means, 14. Annotation input means, 15. Landmark point data storage means, 16. Map screen control means, 17.・Map screen display means. Name of agent: Patent attorney Shigetaka Kurino 1 person = 11- Figure (a-)

Claims (3)

[Claims] (1) Vehicle position detection means for detecting the current position of the vehicle;
map data storage means storing map data including road data; landmark point setting means capable of arbitrarily setting a landmark point and a course direction to a destination at said landmark point; an annotation input means capable of adding a simple annotation to the landmark; a course direction to the landmark point and destination set by the landmark point setting means; and an annotation input by the annotation input means, which are stored as data. the current position coordinates detected by the vehicle position detection means, the map data read from the map data storage means, and the landmark point set by the landmark point setting means and the annotation input means; map screen control means for controlling a map screen to be displayed based on landmark point data stored in the data storage means; and map screen display means for displaying a map screen controlled by the map screen control means. In-vehicle map display device. (2) On the map displayed on the map screen display means, a landmark point setting means sets a landmark point and a course direction to the destination at the landmark point, and an annotation is added to the landmark point by an annotation input means. The in-vehicle map display device according to claim 1, characterized in that: (3) On the map displayed on the map screen display means,
When the current position of the vehicle displayed simultaneously with the map is within a certain distance from the landmark point set by the landmark point setting means, an annotation for the landmark point input in advance by the annotation input means is displayed. The in-vehicle map display device according to claim 1, characterized in that: