JPS6293615A - Running guidance apparatus for vehicle - Google Patents

Abstract

PURPOSE:To enable a driver to certainly confirm a predetermined crossing, by preliminarily storing a map and the image of a predetermined point in a memory means and displaying said predetermined point in such a state that a mark is applied to the position of said point when the map is displayed. CONSTITUTION:The map of a running area and information necessary for running guidance such as the actual images of a plurality of predetermined points such as crossings on said map are preliminarily stored in a memory means 11 like a compact disk. The stored informations and the present area information from a present position recognizing apparatus 6 are taken in a control circuit 1 to perform predetermined calculation. When it is detected that a vehicles has approached one of the predetermined points, the image informations preliminarily stored in the memory means 11 are displayed on a display device 13 and, at a time other than this, a mark 20 is applied so that the positions of the predetermined points are cleared to display the map on the display device 13.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle travel guidance device, and more specifically,
The present invention relates to a vehicle travel guidance device that uses an electronic device to provide information necessary for travel guidance of an automobile or the like.

(Prior Art) As the above-mentioned vehicle travel guidance device, for example, Japanese Patent Laid-Open No. 57-46112 and Japanese Patent Laid-Open No. 57-20681
As described in Japanese Patent No. 9, a vehicle is known in which driving guidance is performed by displaying the current position and driving trajectory on a map shown on a display such as a cathode ray tube. However, with these conventional travel guidance devices, for example, if you want to go to a certain place and have to turn at an intersection on the displayed map, the intersection in front of you is the same as the intersection on the map. It is not possible to determine with certainty whether Therefore, the user may end up passing an intersection where he or she should have turned, or may feel uneasy even though he or she has actually turned at the intersection correctly.

(Objective of the Invention) Therefore, an object of the present invention is to provide a vehicle travel guidance device that allows a predetermined intersection etc. to be reliably confirmed.

(Structure of the Invention) The vehicle travel guidance device of the present invention includes a display means for displaying information for travel guidance of the vehicle, a current position detection means for detecting the current position of the vehicle, and a map and a plurality of locations on the map. a storage means for storing information for driving guidance such as an actual image of a predetermined point of the vehicle; and a control means for receiving signals from the current position detection means and the storage means and controlling the display means, The control means is configured to display an actual image of the predetermined point on the display means when the vehicle approaches the predetermined point, and when displaying the map, display the actual image. It is characterized in that a mark is attached to the memorized predetermined point so that it can be determined. Note that the storage means is preferably a compact disc.

(Operations and Effects of the Invention) As described above, in the vehicle travel guidance device of the present invention, in addition to a map, actual images of a plurality of predetermined points on the map, such as intersections, are stored, and the vehicle When you approach a predetermined target point by a predetermined distance, the map display switches from the previous map display to an image of the target predetermined point, so you can compare the displayed image with the actual wind. This makes it extremely easy to confirm the location. Furthermore, in the present invention, when a map is displayed, a mark is attached to the predetermined point, for example, an intersection, in the displayed map, and when the current location approaches the mark, the passenger is informed that it is time to switch to displaying an image. I can let you know.

(Embodiment) Hereinafter, a vehicle travel guidance system according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a vehicle travel guidance device according to an embodiment of the present invention.

In this FIG. 1, reference numeral 1 indicates a control circuit, and this control circuit 1 is preferably constituted by a microcomputer, and includes a central processing circuit (CPU) 2, and this CPU 2.
Read-only memory IJ (ROM) 3 and random access memo 3 are connected to the CPU 2 and store the calculation procedures and constants of the CPU 2. J (RAM) 4, and a human output interface 5. The above input/output interface 5 includes:
A current position recognition device 6, which is a device for estimating and recognizing the current position of a car based on geomagnetism, a gyro, etc. and vehicle speed, is connected to a CD player 8 via a decoder 7, and an operation switch 10 via an encoder 9, respectively. The above CD player 8
includes regular compact discs and CD-ROMs.
11 can be loaded. In addition,
Although a cassette tape or the like can be used instead of this CD-ROM, CD-ROM is
It is desirable to use OM.

The CD-ROM 11 stores in advance digital information necessary for guiding the vehicle, such as a section map (see FIG. 3), an overall map, and actual images of major intersections. On the above-mentioned map "2," as shown in FIG. 3, marks 2o are attached to intersections for which intervening images are stored.

The CD-ROM 11 may also digitally store information such as a tourist guide, opening inspection procedures, tire replacement procedures, how to put on tire chains, etc. as image information or audio information in advance. Further, the decoder 7 is
CD-ROMI 1 played by CD player 8
It is determined whether the data is audio information or image information, and when the data is image information, the data is sent as is to the audio device AU, and when the data is image information, the data is sent to the control circuit 1 through the human output interface. 5.

In addition to the function described later, the operation switch IO may also function as a destination indicating means for the driver or the like to specify a destination.

When the control circuit 1 receives a data signal indicating the destination from the operation switch 10 acting as the destination indicating means, the control circuit 1 uses this data signal and the signal indicating the current location from the current position recognition device 6 to move from the current location. Set the driving route to the destination.

A display control circuit 12 is connected to the output side of the input/output interface 5, and this display control circuit 12 includes:
A display 13 such as a cathode ray tube or a liquid crystal display, and a video memory 14 which is a video display RAM are connected.

The control circuit 1 receives data regarding the current position of the vehicle from the current position recognition device 6 and data regarding the destination from the operation switch 10, and based on these data, the control circuit 1 receives data regarding the current location of the vehicle from the current location recognition device 6, and determines the distance from a predetermined point, for example, a predetermined intersection, according to the current location. Outside, the data of the map shown in FIG. 3, and within a predetermined distance, the data of the image of the predetermined point are read from the CD-ROM 11 loaded in the CD-player 8.

This data is temporarily stored in RAM4. The control circuit 1 further creates a map according to the current position based on the data temporarily stored in the RAM 4, and also displays video data in which the current position and the travel trajectory are superimposed, or an image of the predetermined point. Video data is created and these video data are output to the display control circuit 12. This display control circuit 12 stores the video data in a video memory 14.
or display the contents of the video memory 14 on the display 13. Incidentally, enlargement, switching, etc. of the image on the display 13 are performed by the operation switch 1O.

Next, an example of the display control of the control circuit 1 will be described in more detail with reference to the flowchart of FIG. In this display control, a map as shown in FIG. 3 and actual images of intersections at a plurality of predetermined locations on this map as shown in FIG. 4 are stored in advance in the CD-ROM 11. , these will be explained as automatically switching or displaying. Furthermore, different images of the intersection are stored depending on the direction of approach to the intersection; for example, in the case of a crossroads, four images are stored.

In the display control, first, a map 20 (see FIG. 3) corresponding to the current location is read out from the CD-ROM 11, and this map 20 and the traveling trajectory 21 of the vehicle are displayed on the display 13. Thereafter, the current location is recognized based on the signal from the current location recognition device 6, and then it is determined whether the display on the display 13 is a map trajectory display. When this determination is YES, an intersection is searched, and then it is determined whether there is an intersection nearby based on the current location, and when this determination is YES, the distance between the current location and that intersection and the distance to that intersection are determined. Calculate the direction of approach. Next, the distance to the intersection is a predetermined distance (indicated by a dashed circle 22 in FIG. 3), for example 2.
Determine whether it is within 00m.

This judgment and the judgment as to whether there is an intersection near the above are No.
When this happens, the process returns to the step of recognizing the current location.

On the other hand, if the determination as to whether the distance is within the predetermined distance is YES,
A three-dimensional image of the intersection from the direction of approach (see Figure 4) is read out from the CD-ROM 11,
Display this and then return to the current location recognition step. At this time, the screen will change to mark 2 on the map above.
Due to the effect of 0, the occupant can be aware of this in advance.

When the determination as to whether to display the map trajectory is No, the distance to the intersection is calculated, and then it is determined whether this distance is within a predetermined distance. If this judgment is YES, leave it as is or N.
When it is O, the display switches to the map trajectory display, returns to the step of recognizing the current location, and repeats the routine again.

As explained above, in the system of the present invention, when the user enters within a predetermined distance from a certain predetermined point, the display on the display is switched from displaying the map trajectory to an image of the predetermined point on the cedar. This prevents you from misrecognizing the destination (and since a mark indicating the predetermined point is placed on the displayed map, it is convenient to know in advance when the display will change).

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a vehicle travel guidance device according to an embodiment of the present invention, FIG. 2 is a flowchart showing an example of control of map locus display and intersection image display by a control circuit, and FIG. 3 is a map FIG. 4 is a diagram showing an example of a trajectory display, and FIG. 4 is a diagram showing an example of an intersection image display.

Claims (2)

[Claims] (1) Display means for displaying information for vehicle travel guidance, current position detection means for detecting the current position of the vehicle, and travel guidance such as a map and actual images of a plurality of predetermined points on the map. storage means for storing information for, and receiving signals from the current position detection means and storage means;
control means for controlling the display means, the control means is adapted to display an actual image of the predetermined point on the display means when the vehicle approaches the predetermined point; A travel guidance device for a vehicle, characterized in that when displaying a map, a mark is attached so that a predetermined point whose actual image is stored can be determined. (2) The vehicle travel guidance device according to claim (1), wherein the storage means is a compact disk.