JPH0690038B2 - Vehicle guidance device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle running guidance device, and more specifically,
The present invention relates to a vehicle driving guidance device that provides information necessary for driving guidance of an automobile or the like by an electronic device.

(Prior Art) As a vehicle running guidance device as described above, for example, as described in JP-A-57-46112 and JP-A-57-206819, travel guidance is provided by a cathode ray tube or the like. It is known that the current position and the traveling locus are displayed on the map shown on the display. However, in these conventional travel guidance devices, for example, when it is necessary to turn to an intersection on the displayed map because the user wants to go to a certain place, the intersection on the map is the same as the intersection on the map. It is not possible to determine for sure.
Therefore, there are cases in which the vehicle may pass an intersection where it should turn, and in some cases, it may cause anxiety even though the person actually turns the intersection accurately.

(Object of the invention) Therefore, it is an object of the present invention to provide a vehicle traveling guidance device that enables a predetermined intersection to be surely confirmed.

(Structure of the Invention) In order to achieve the above-mentioned object, a vehicle running guidance device of the present invention includes a means for displaying information for driving guidance of a vehicle, a current position detecting means for detecting a current position of the vehicle, and a map. And storage means for storing detailed intersection information of a plurality of predetermined intersections on the map and signals from the current position detection means and the storage means, and the display means displays the vehicle from any of the predetermined intersections. Control means for displaying a map when the vehicle is out of a predetermined distance, and when the vehicle approaches within a predetermined distance to any of the predetermined intersections, the map display is switched to the detailed intersection information of the intersection and displayed. And a mark giving means for attaching a mark indicating that the intersection has detailed information of an intersection to the predetermined intersection when the display means is displaying a map. .

In the vehicle travel guidance device of the present invention configured as described above, in addition to the map, detailed intersection information (actual image etc.) of a plurality of predetermined intersections on the map is stored, and the vehicle is set to the predetermined intersection. A map is displayed when the vehicle is within a predetermined distance from any of the intersections, and when the vehicle approaches within a predetermined distance to any of the intersections, the map display is switched to the detailed information of the intersection. Therefore, when the vehicle approaches a predetermined intersection within a predetermined distance, the intersection can be surely confirmed by comparing the displayed detailed intersection information with the actual scenery. Further, in the present invention, when a map is displayed, a mark indicating that the intersection has detailed information on the intersection is attached to a predetermined intersection. It is possible to notify the occupant that the vehicle will be switched to, and it is possible to reliably confirm a predetermined intersection.

(Embodiment) Hereinafter, a vehicle running guidance device 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 FIG. 1, reference numeral 1 indicates a control circuit, which is preferably composed of a microcomputer, and which is connected to a central processing circuit (CPU) 2 and this CPU 2 so that the calculation procedure of the CPU 2 and Read-only memory (ROM) 3 and random access memory (RAM) that store various constants
4 and an input / output interface 5. The input / output interface 5 includes a current position recognizing device 6 which is a device for recognizing the current position of an automobile based on the geomagnetism, gyro and the like and a vehicle speed, a CD player 8 via a decoder 7, and an operation switch 10 via an encoder 9, respectively. It is connected. The CD player 8 can be loaded with both a normal compact disc and a CD-ROM 11. A cassette tape or the like can be used instead of this CD-ROM, but it is a CD because of its storage capacity and ease of handling.
-It is preferable to use ROM.

The CD-ROM 11 pre-stores digitally the information necessary for guiding the vehicle, that is, the division map (see FIG. 3), the general map and the actual images of major intersections. On the map, as shown in FIG. 3, a mark 20 is attached to an intersection where an image is stored in advance.

This CD-ROM11 contains other tourist guides, start-up inspection procedures,
The tire replacement procedure, handling information such as how to apply the tire chain, and the like may be digitally stored in advance as image information and audio information. Further, the decoder 7 discriminates whether the data of the reproduction CD-ROM 11 is the audio information or the image information by the CD player 8, and when the data is the image information, the data is sent to the audio apparatus AU as it is, and the data is reproduced as the image. In the case of information, the data is supplied to the control circuit 1 through the input / output interface 5.

The operation switch 10 may function as a destination designating means for a driver or the like to designate a destination, in addition to the function described later. When the control circuit 1 receives a data signal indicating a destination from the operation switch 10 which functions as the destination indicating means, the data signal and
With the signal indicating the current position from the current position recognition device 6,
Set the travel route from the current location to the destination.

A display control circuit 12 is connected to the output side of the input / output interface 5. The 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. It is connected.

The control circuit 1 receives data regarding the current position of the vehicle from the current position recognizing device 6 and data regarding the destination from the operation switch 10, and based on these data, according to the current position, a predetermined point, for example, a predetermined distance from a predetermined intersection. Outside, the data of the map shown in FIG. 3 and the image data of the predetermined point within a predetermined distance are stored in the CD player 8
It is read from the CD-ROM 11 loaded in. This data is temporarily stored in RAM4. The control circuit 1 further creates a map according to the current position based on the data once stored in the RAM 4, and shows the video data in which the current position and the traveling locus are superposed, or the image of the predetermined point. Video data is created and these video data are output to the display control circuit 12. The display control circuit 12 writes the video data in the video memory 14 or
Is displayed on the display unit 13. The above display 13
Enlargement and switching of the upper image is performed by the operation switch 10.

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, the actual image of the intersection shown in FIG. 3 and a plurality of predetermined points on this map as shown in FIG. 4 is stored in advance in the CD-ROM 11, It is assumed that they are automatically switched or displayed. As for the image of the intersection, different images are stored depending on the approach direction to the intersection, that is, four images are stored in the case of, for example, a crossroad.

In the display control, first, the map 20 (see FIG. 3) corresponding to the current location is read from the CD-ROM 11, and the map 20 and the traveling locus 21 of the vehicle on the map 20 are displayed on the display 13. After that, the current position is recognized based on the signal from the current position recognition device 6, and then it is determined whether the display on the display 13 is the map track display. When this judgment is YES, the intersection is searched, and then it is judged whether or not there is an intersection in the vicinity of the current location. When this judgment is YES, the distance between the current location and the intersection and the intersection Calculate the approach direction of. Next, it is determined whether the distance to the intersection is within a predetermined distance (shown by a broken line circle 22 in FIG. 3), for example, 200 m. If this determination and the determination of whether there is an intersection in the vicinity are NO, the process returns to the current position recognition step.

On the other hand, when the determination is YES within the predetermined distance, an image (see FIG. 4) from the approach direction, such as a three-dimensional image of the intersection, is read from the CD-ROM 11, and this is displayed. Return to step. At this time, it is possible for the occupant to recognize in advance that the screens are switched by the action of the mark 20 on the map.

When it is determined whether the map locus is displayed or not, the distance to the intersection is calculated, and then it is determined whether this distance is within a predetermined distance. When this determination is YES, it is as it is, and when it is NO, the map locus display is switched to, the process returns to the step of recognizing the current position, and the routine is repeated again.

As described above, in the system of the present invention, when a vehicle enters a predetermined distance with respect to a predetermined intersection,
Since the display on the display is switched from the map trajectory display to the detailed intersection information of the predetermined intersection, the destination is not erroneously recognized, and the predetermined intersection is displayed on the displayed map. Since it is marked with, it is convenient to know the display switching in advance.

[Brief description 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 flow chart 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. 1 ... Control circuit, 6 ... Current position recognition device 8 ... CD player, 10 ... Operation switch 11 ... CD-ROM, 13 ... Display device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayuki Hosoi, 2610, Hanazono, Tokorozawa, Saitama Prefecture, 2610 Pioneer stock company Tokorozawa factory (56) References JP 61-95386 (JP, A) JP 62- 79312 (JP, A)

Claims (2)

[Claims] 1. A means for displaying information for guiding a vehicle to travel, a current position detecting means for detecting a current position of a vehicle, a map and detailed intersection information of a plurality of predetermined intersections on the map are stored. Upon receiving signals from the storage means, the current position detection means and the storage means, the display means displays a map when the vehicle is out of a predetermined distance from any of the predetermined intersections, and the vehicle displays the predetermined intersections. When any one of the above is approached within a predetermined distance, the control means for switching the map display to the detailed intersection information of this intersection and displaying it, and the intersection details of the intersection when the display means is displaying the map A vehicle running guidance device comprising: a mark giving unit that puts a mark indicating that the information is included at the predetermined intersection. 2. The vehicle running guidance device according to claim 1, wherein the storage means is a compact disc.