JPH04230600A - Vehicle operation backup device - Google Patents

Abstract

PURPOSE:To improve the safety of running of a vehicle passing an intersection by visually presenting intersection information to the vehicle. CONSTITUTION:Images of conditions of respective roads at the intersection are picked up by a camera device 10, and pickedup image signals are received by repeating units 3, 4, 5, and 6 provided on respective roads connected to the intersection and are transmitted into specific areas A, B, C, and D. When the vehicle enters into each specific area, the image signal is received and is displayed on a picture display means of the vehicle.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle driving support system that visually provides intersection information to vehicles passing through an intersection in order to improve the running safety of the vehicle.

0003

[Background Art] With the miniaturization of display devices such as televisions, display devices are mounted on vehicles to visually provide various information such as road information to drivers, thereby facilitating smooth driving and improving safety. has been carried out in recent years.

0004

When a vehicle enters an intersection, it is desirable to be able to grasp the conditions of other roads connected to the intersection from the viewpoint of driving safety.

[0005] The present invention has been made in view of the above, and
The purpose is to provide a vehicle driving support device that visually provides each vehicle entering the intersection with the condition of each road at the intersection in order to improve the safety of driving at the intersection. .

[Configuration of the invention]

[0007]

[Means for Solving the Problems] In order to achieve the above object, the vehicle driving support device of the present invention includes an imaging means for taking an image of the condition of each road at an intersection, and a device installed in a vehicle entering the intersection from each road. a transmission means for transmitting an image signal taken by the imaging means to be displayed on the image display means provided on a vehicle approaching the intersection from each road; and an image display of the vehicle. The present invention further comprises an image converting means for converting the image signal displayed on the means into a predetermined direction depending on the direction in which the vehicle enters the intersection.

[0008]

[Operation] The vehicle driving support device of the present invention images the condition of each road at an intersection, displays the image signal on the image display means of the vehicle entering the intersection, and displays the image signal on the image display means of the vehicle entering the intersection. The display is converted to a predetermined direction depending on the direction in which the intersection is entered.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram showing the overall configuration of a vehicle driving support system according to an embodiment of the present invention. The vehicle driving support device shown in the figure includes a camera device 10 that is equipped with a wide-angle lens above the approximate center of the intersection and is an imaging means for capturing images of the conditions of each road at the intersection. The image signal captured by this camera device 10 is transmitted to relay units 3, 4, 5, and 6 provided along each road approximately several meters away from the intersection. When each relay unit 3, 4, 5, 6 receives an image signal from the camera device 10, it transmits this image signal to the corresponding specific area A, B, C, D of each road.

Specifically, the image signals transmitted from each relay unit to each vehicle are not received by vehicles on other roads, but are received by vehicles entering an intersection from the road where the own relay unit is installed. The specific areas A, B, C of the road where the own relay unit is installed,
, D, and the flight performance and output level are controlled so that the signal is transmitted only within the range D, and is transmitted at a specific frequency. In addition, this specific area A, B, C, D
An image signal that is transmitted only within the area actually leaks to the vicinity, but in order to explain the principle of this embodiment, in the present invention, the image signal is transmitted only within the specific areas A, B, C, and D. The following explanation assumes that the message is sent only to

[0012] When the vehicle 23 enters the characteristic areas A, B, C, and D to which the image signals are transmitted from each relay unit, the on-vehicle receiving device mounted on the vehicle receives the image signals. This image signal is then displayed on the on-vehicle monitor, thereby displaying the condition of each road at the intersection.

FIG. 2 is a block diagram showing the configuration of the camera device 10. As shown in FIG. As shown in the figure, a camera device 10 includes a video camera 1 that captures images of the conditions of each road at an intersection.
and a transmitter 7 that transmits an image signal of the intersection captured by the camera 1 via an antenna 11. Note that, as described above, the camera 1 is equipped with a wide-angle lens in order to image the situation of each road at the intersection, that is, the image information of each vehicle entering the intersection from each road, from above the approximate center of the intersection. ing.

FIG. 3 is a block diagram showing the configuration of each of the relay units 3-6. Since all relay units have the same configuration, the configuration of relay unit 3 will be explained. The relay unit 3 includes a receiver 8 that receives, via an antenna 12, a radio wave of an image signal emitted from the transmitter 7 of the camera device 10 via an antenna 11. The image signal received by the receiver 8 is temporarily stored in a first field memory 15 as a digital signal via a video signal generator 13 and an A/D converter 14. 1st
The image signal stored in the second field memory 15 is switched by the read converter 17 to the read direction corresponding to each relay unit, and is temporarily stored in the second field memory 18.

[0015] Note that the image signal of the intersection captured by the camera device 10 is a fixed image signal of the intersection, for example, as shown in FIG. 4, since the camera device 10 is fixed. This is what is shown. That is,
The image shown in FIG. 4 captured by the camera device 10 is an image viewed in the direction indicated by arrow H in FIG. 1 because the bicycle is above and the vehicle 23 is on the left side. Such images are easy to see for drivers of vehicles entering the intersection from the direction of arrow H, but vehicles entering the intersection from other directions, for example, from the directions of arrows E, F, and G in Figure 1. This is difficult for vehicle drivers to see.

Therefore, the readout conversion unit 17 temporarily stores images in the first field memory 15 so that the images of the intersection can be easily seen by vehicles entering the intersection from each road as shown by arrows E, F, and G. The image signal is read out with the vertical and horizontal directions reversed, and then stored in the second field memory 18 again. for example,
As shown in FIG. 1, for a vehicle 23 entering an intersection from a road with an arrow E, an image as shown in FIG. 17, the data is converted as shown in FIG. 5 and stored in the second field memory 18.

The image signal thus converted and stored in the second field memory 18 is supplied as an analog signal to the specific frequency converter 28 via the D/A converter 20. The image signal obtained by inserting a vertical synchronization signal into the analog signal is modulated and converted to a specific frequency, and is transmitted from the antenna 27 to the specific area A via the transmitter 21.

FIG. 6 is a block diagram showing the configuration of the on-vehicle receiver 22 mounted on a vehicle approaching an intersection. When the vehicle enters the specific area A (B, C, D) near the intersection, this in-vehicle receiving device 22 transmits signals from the transmitter 21 of the relay unit 3 (4, 5, 6) to the antenna 27.
A receiver 24 receives and detects the specific frequency transmitted through the antenna 29 and demodulates the image signal from the detected specific frequency, and an in-vehicle monitor 25 displays the received image signal. It is configured.

In the vehicle driving support system configured as described above, an image signal as shown in FIG.
The signal is transmitted from the transmitter 7 of the camera device 10 to each relay unit 3, 4, 5, 6 via the antenna 11. Each relay unit receives the intersection image signal from the camera device 10 via the antenna 12 with the receiver 8, and receives the intersection image signal from the video signal generator 1.
3. Temporarily stored in the first field memory 15 via the A/D converter 14. Each relay unit then
The intersection image signal stored in the field memory 15 is converted into a direction corresponding to each relay unit and read out. For example, in the case of the relay unit 3, the direction of the intersection image is converted and read out as shown in FIG. The data is stored in the second field memory 18. The image signal stored in this second field memory 18 is supplied to a specific frequency converter 28 via a D/A converter 20, and the image signal is converted to a specific frequency in the specific frequency converter 28. The signal is then transmitted via the transmitter 21 from the antenna 27 into specific areas A, B, C, and D corresponding to each relay unit.

[0020] In this way, the image signal of the intersection is transmitted from each relay unit 3, 4, 5, 6 to the corresponding specific area A, B, C.
, D, and as shown in FIG. The receiver 24 of the receiving device 22 receives and detects a specific frequency via an antenna 29, and demodulates the detected specific frequency into an intersection image signal. This received intersection image signal is transmitted from the receiver 24 to the on-vehicle monitor 25.
As a result, an image of an intersection as shown in FIG. 5, for example, is displayed on the in-vehicle monitor 25. By looking at this image, the driver can visually perceive vehicles and the like approaching the intersection from other roads, thereby improving driving safety.

In the above embodiment, one camera device 10 is provided to take an image of the intersection, but the invention is not limited to this. For example, one camera device 10 may be provided for each road connected to the intersection. Or, in addition to installing multiple units at a time, split the screen into left and right on the in-vehicle monitor of vehicles approaching from each road, select the corresponding images, distribute them to the left and right, combine them, and send them to each specific area. It may be configured as follows. Further, in this case, for example, if there are two roads connected from the right side to an intersection, the right side of the screen of the in-vehicle monitor is further divided into upper and lower parts, and the corresponding images are combined and displayed. Good too. Furthermore, the divided images may be combined in each relay unit, or may be performed centrally at one location and transmitted to each relay unit by wire or by converting to a specific frequency.

Further, in the above embodiment, the camera device 10 is installed almost above the center of the intersection, but the camera device 10 is not limited to this, but can be installed at any suitable location where the situation of each road at the intersection can be accurately grasped. It is sufficient if it is installed in

[0023]

[Effects of the Invention] As explained above, according to the present invention,
The situation of each road at the intersection is imaged, the imaged signal is displayed on the image display means of the vehicle entering the intersection, and the image signal is directed in a predetermined direction according to the direction in which the vehicle enters the intersection. Since the information is converted and displayed, the vehicle can accurately grasp the situation of each road at the intersection, that is, the approach of other vehicles from other roads to the intersection, before attempting to enter the intersection. , it is possible to improve the safety of driving at intersections.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the overall configuration of a vehicle driving support device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a camera device used in the vehicle driving support device of FIG. 1;

FIG. 3 is a block diagram showing the configuration of a relay unit used in the vehicle driving support device of FIG. 1;

FIG. 4 is a diagram showing an image of an intersection captured by the camera device shown in FIG. 2;

FIG. 5 is a diagram showing an image of an intersection converted by the relay unit of FIG. 3;

FIG. 6 is a block diagram showing the configuration of an on-vehicle receiving device used in the vehicle driving support device of FIG. 1;

[Explanation of symbols]

3 Relay unit 4 Relay unit 5 Relay unit 6 Relay unit 10 Camera device 17 Read conversion section 22 In-vehicle receiving device 25 In-vehicle monitor

Claims (2)

[Claims] 1. Imaging means for taking an image of the condition of each road at an intersection; an image display means provided on a vehicle entering the intersection from each road; and an image signal taken by the imaging means from each road to the intersection. a transmission means for transmitting the image signal to be displayed on the image display means provided on the vehicle entering the intersection; and a transmission means for transmitting the image signal to be displayed on the image display means of the vehicle according to the direction in which the vehicle enters the intersection. 1. A vehicle driving support device comprising: an image converting means for converting an image so that the image is oriented in a predetermined direction. 2. The image pickup means is installed above approximately the center of the intersection, and the transmission means corresponds to each road so as to transmit the image signal to at least vehicles entering the intersection from each road. and the image conversion means is provided in either the transmission means or the image display means provided in the vehicle, and the image display means displays the side from which each vehicle enters the intersection downward. 2. The vehicle driving support device according to claim 1, wherein the vehicle driving support device is configured to convert an image signal into an image signal.