JPH0765899B2 - 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 traveling guide device for a vehicle as described above, for example, as described in JP-A-57-46112 and JP-A-57-206819, the travel guide is 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 driving guidance devices, for example, if you have to turn to an intersection on the displayed map because you want to go to a certain place, whether the intersection close to you is the same as the intersection on the map. There is a problem that the judgment cannot be made with certainty. Therefore, there may be cases where the driver has passed an intersection where he should turn, or he may be anxious even though he actually turned the intersection accurately.

(Development of the Invention) In order to solve the above problems, for example, when a predetermined distance is approached to a predetermined intersection or the like, an actual image of the intersection or the like is displayed so that the actual image of the intersection or the like is displayed. Should be surely recognized.

However, when a predetermined intersection is approached by a predetermined distance, the image is switched to an actual image, and if the image is fixed, there is a problem that the position of the own vehicle cannot be grasped in a global scale.

(Object of the invention) Therefore, an object of the present invention is to provide a vehicle running guidance device capable of easily performing reliable recognition of a predetermined intersection and global recognition of the vehicle position.

(Structure of the Invention) In order to achieve the above-mentioned object, a vehicle running guidance device of the present invention includes a display unit that displays information for guiding the running of a vehicle, and a current position detection unit that detects the current position of the vehicle. When a vehicle receives a signal from a storage means for storing detailed information of a map and a plurality of predetermined intersections on the map and the current position detecting means and the storage means, the vehicle is located within a predetermined distance from any of the predetermined intersections. Control means for displaying the map on the display means and substantially displaying only the detailed intersection information of the predetermined intersection when the vehicle is within a predetermined distance to any of the predetermined intersections; First switching means for manually switching the display of the detailed intersection information from the display of only the detailed intersection information to a map display within a predetermined distance, and switching by the first switching means Second, the map display is manually switched again to display only the detailed intersection information within the predetermined distance.
And a switching means.

Further, the storage means is preferably a compact disc. Further, the first switching means and the second switching means are preferably screen switches provided on the display means.

(Operation / Effect of the Invention) In the vehicle travel guidance device of the present invention configured as described above, detailed information (actual image, etc.) of the intersection of the vehicle
When a vehicle is within a predetermined distance from a predetermined intersection, a map is displayed on the display means when the vehicle is within a predetermined distance from the predetermined intersection. Image, etc.) is displayed. However, if the occupant determines that the map display is necessary due to the driving situation even within the predetermined distance to the predetermined intersection, only the detailed intersection information (actual image, etc.) is manually switched to the map display. To be If the occupant determines that it is not necessary to display the map and the detailed intersection information (actual image, etc.) is required to be displayed while the vehicle is traveling within this predetermined distance, the detailed intersection information (actual image, etc.) should be displayed manually. It is switched to the display of only again.

As a result, according to the vehicle travel guidance device of the present invention, when the vehicle is within the predetermined distance to the predetermined intersection, only the map display and the detailed intersection information (actual image, etc.) can be freely displayed by the occupant's judgment. Since it is possible to switch manually, it is possible to easily understand both the global position of the vehicle and the corresponding intersection. Further, since only the detailed intersection information (actual image, etc.) is substantially displayed on the display means, the visibility of the display means is improved, so that the occupant can instantly obtain the detailed intersection information. it can.

(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 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 a vehicle based on geomagnetism, a 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 the CD-ROM, but it is preferable to use the CD-ROM because of its storage capacity and easy handling.

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.

In this CD-ROM 11, other tourist guides, start-up inspection procedures, tire replacement procedures, handling information such as how to hang a tire chain, etc. are digitally stored in advance as image information and audio information. The decoder 7 is a CD player 8
Discriminates whether the data of the CD-ROM 11 reproduced by is audio information or image information, and when the above data is audio information,
The data is sent to the audio device AU as it is, and when the data is image information, the data is supplied to the control circuit 1 through the input / output interface 5.

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 map data, and within a predetermined distance the image data of the intersection, the CD-CD loaded in the CD-player 8
Read from ROM11. 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 and displays the contents of the video memory 14 on the display 13. The operation switch 10 is used to enlarge the image on the display 13.

In order to switch from the intersection image display to the map trajectory display and from the map trajectory display to the intersection image display within a predetermined distance range from the predetermined intersection, a screen is displayed on the front surface of the display device 13, that is, on the screen. A switch 19 is provided. This screen switch 19 is the second
As shown in the figure, it is composed of a pair of a large number of light emitting elements 21 and light receiving elements 22 arranged around the display 13. The screen switch 19 emits a signal when the occupant touches the screen of the display 13 with his / her finger to interrupt the light from the light emitting element 21. Upon receiving this signal, the control circuit 1 switches from the intersection image display to the map trajectory display, or from the map trajectory display to the intersection image display.

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 at a plurality of predetermined points on this map such as the map shown in FIG. 4 and the stereoscopic image shown in FIG. 5 is stored in advance in the CD-ROM 11. It is explained 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 recognizing device 6, then the intersection is searched, and then it is determined whether or not there is an intersection in the vicinity of the current position.
If YES, the distance between the current location and the intersection and the approach direction to the intersection are calculated. Next, it is determined whether the distance to the intersection is within a predetermined distance (indicated by a broken line circle 22 in FIG. 4), for example, 200 m. If this determination and the determination of whether there is an intersection in the vicinity are NO, after performing the map locus display means, the process returns to the current position recognition step.

On the other hand, when the determination as to whether the distance is within the predetermined distance is YES, it is determined whether or not the screen of the display device 13 is touched based on the signal from the screen switch 19, and when the determination is YES,
Whether or not the previous display is a map locus is determined. If this judgment is YES, the intersection image display is performed, while if NO, the map locus display is performed, and the process returns to the current location recognition step.
Further, when the judgment of the screen touch is NO, it is judged whether or not there was a screen touch last time. When the judgment is YES, the judgment is YES, and when the judgment is NO, the image of the intersection is displayed, and then the routine returns to the step of recognizing the current position and repeats the routine. .

As described above, according to the system of the present invention, when the intersection where the detailed intersection information is stored is within a predetermined distance, the detailed intersection information display and the map locus display can be switched by a single touch on the screen of the display device. Both the global understanding of the position and the recognition of the corresponding intersection can be easily performed.

[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 schematic view of a screen switch, and FIG. 3 is a control circuit for controlling map locus display and intersection image display. FIG. 4 is a flowchart showing an example, FIG. 4 is a diagram showing an example of map locus display, and FIG. 5 is a diagram showing an example of intersection image display. 1 ... Control circuit, 6 ... Current position recognition device 8 ... CD player, 10 ... Operation switch 11 ... CD-ROM, 13 ... Display device 20 ... Screen switch

Continued Front Page (72) Inventor Hitoshi Ando 2610, Hanazono, Tokorozawa, Saitama Prefecture 2610 Pioneer Stock Company Tokorozawa Plant (56) References JP 61-95386 (JP, A) JP 62-79312 (JP) , A)

Claims (3)

[Claims] 1. A display means for displaying information for guiding a vehicle to travel, a current position detection means for detecting a current position of the vehicle, a map and detailed intersection information of a plurality of predetermined intersections on the map. When the vehicle receives a signal from the current position detection means and the storage means, the vehicle displays the map on the display means outside a predetermined distance from any of the predetermined intersections, and the vehicle displays the predetermined intersection. Control means for displaying substantially only the detailed intersection information of the predetermined intersection when the distance is within a predetermined distance with respect to either, and the display of the display means within the predetermined distance for displaying only the detailed intersection information. The first switching means for manually switching from the display to the map display, and the map display switched by the first switching means again within the predetermined distance, again at the intersection details. Vehicular travel guidance device, characterized in that it comprises a second switching means for switching manually to display only information. 2. The vehicle running guidance device according to claim 1, wherein the storage means is a compact disc. 3. The vehicle running guidance apparatus according to claim 1, wherein the first switching means and the second switching means are screen switches provided on the display means.