• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A video system in a vehicle (11) includes cameras (12) capturing rear and side areas of a vehicle body (1), control devices (13) displaying video images captured by the cameras (12) on screens, and an electronic control unit (14) formatting the displayed video images. The cameras (12) are received in housings (15) provided on the left and right sides of a vehicle body (1), and direction indication lights (16) are provided on external surfaces of the vehicles (1). housings (15). The electronic control unit (14) controls a video image processing circuit (17) so that video images of the rear and side areas of the body (1) are displayed on two screen portions of the control device ( 13) at different compression rates and that the compression ratios change depending on a vehicle information.
    公开号:FR3025351A1
    申请号:FR1557967
    申请日:2015-08-27
    公开日:2016-03-04
    发明作者:Naoki Tatara
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an electronic control unit for performing a data processing for shaping a video image of a peripheral area of a vehicle body which is picked up by an on-board camera so as to displaying the video image formatted on an onboard control device and a video system in a vehicle including the electronic control unit. Conventionally known a technology in which a camera and a control device are used in place of a side mirror and a video image of a peripheral area of a vehicle body that is captured by the camera is displayed on the control device disposed in a passenger compartment of a vehicle. For example, JP-A-2003-312359 describes "a vehicle rear view recognition system" in which cameras are placed on both left and right sides of a front portion of a body of vehicle and a control device is disposed in front of a driver's seat. JP-A-7-223487 discloses "a vehicle peripheral situation display system" in which a moving body in a peripheral area of a vehicle is detected and an area including the moving body is highlighted. on a screen of a control device. Moreover, since a viewing angle of a camera changes according to the specifications of a lens, in the case of a side mirror, an area that constitutes a blind spot can be displayed on a control device. for example using a wide angle lens. However, with the method of changing the viewing angle 3025351 2 using a lens, a peripheral area of a vehicle body that is displayed on a control device does not coincide with a peripheral area of the vehicle body which is view of a side mirror, and therefore, there is a possibility that a dangerous situation arises due to an error made by the driver in apprehending a real distance to an object in the peripheral area displayed on the device control. In addition, although a method is also known in which a plurality of cameras are used to capture video images of different areas and the video image data is combined for display on a control device, in the case where The method would be used, there is a problem that cost and time are required to process the video image data. An object of the invention is therefore to provide an electronic control unit which can format a video image captured by a camera so that the video image can easily be visualized using inexpensive computer technology. and a video system in a vehicle that includes the electronic control unit. [0006] To solve the problem, the present invention provides an electronic control unit which executes data processing to format a video image of a peripheral area of a vehicle body which is picked up by an on-board camera. to display the video image formatted on an onboard control device. The electronic control unit includes video image forming means which displays the video image data received by the camera on at least two parts of a screen of the control device at different compression rates. Here, displaying the video image data at different compression rates means that the video image of the peripheral area of the vehicle body is displayed relatively large on the first part of the screen of the device. control while being displayed relatively small on the second part of the screen of the control device. This includes a case where the video image captured by the camera is displayed on the first portion untreated and the video image on the second portion is displayed larger or smaller than the video image on the first portion. In addition, in the electronic control unit of the invention, the video image shaping means comprise a video image processing circuit which changes the compression ratios of the video images that are displayed. on at least the two parts of the screen of the control device according to a vehicle information. The vehicle information includes, for example, the fact that the vehicle is moving forward or backward, whether the vehicle is turning left or right, that there is a following vehicle, or a vehicle that is traveling. moves next to the vehicle, the vehicle speed, the road condition, the time, the brightness of the immediate environment, and the like, and all this information is provided to the electronic control unit by sensors which are provided at parts of the vehicle body. In one embodiment of the invention, the video image processing circuit processes the video image data which is displayed on at least the two parts of the screen of the control device so that the compression ratios differ in a horizontal direction. In another embodiment of the invention, the video image processing circuit 3025351 processes the video image data that is displayed on both parts of the monitor screen so that compression differ in a vertical direction. In addition, the video image data can be processed so that the compression ratios differ in the horizontal direction and the vertical direction. [0010] A video system embedded in a vehicle according to the invention comprises a camera which captures a video image of a peripheral zone of a vehicle body, a control device which displays video image data captured by the camera, and an electronic control unit which performs data processing to format a video image to be displayed on the control device, wherein the electronic control unit comprises a video image processing circuit which changes the compression ratio of a video image that is displayed on at least two parts of a screen of the control device according to a vehicle information. Here, the camera is housed in a housing and is placed at a necessary part of the vehicle body. Preferably, the housing can commonly be used to receive the camera and a lighting light. As a lighting light, a headlamp, a change of direction indication lamp, a clearance lamp and the like may be considered. According to the electronic control unit and the video system in a vehicle of the invention, since the video image data captured by the camera are processed at the different compression ratios to be displayed on at least the two parts. of the screen of the control device, it is advantageous that the video image of the peripheral area of the vehicle body 3025351 5 can be shaped so that the video image can easily be visualized by a processing technique inexpensive data. Fig. 1 is a block diagram of a video system in a vehicle showing an embodiment of the invention. Figure 2A shows a vehicle V that moves straight at an intersection.
    [0002] Figure 2B shows a video image processing when the vehicle V is moving straight at the intersection. Figure 3A shows the vehicle V which is about to turn left (or right).
    [0003] Figure 3B shows model diagrams showing a video image processing performed by the electronic control unit when the vehicle is turning to the left. Figure 4A shows an untreated video image captured by the camera while the vehicle is stationary.
    [0004] Figure 4B shows a video image displayed on the control device as the vehicle moves straight ahead. Figure 4C shows a video image when vehicle is in reverse.
    [0005] Figure 5 is a model diagram showing a video image processing performed by the electronic control unit when the vehicle is turning right at an intersection. Fig. 6 is a block diagram showing a video system in which electronic control units are added to the corresponding cameras. Fig. 7 is a block diagram showing a video system in which electronic control units are added to the corresponding control devices. An embodiment of the invention will be described hereinafter on the basis of the drawings. A video system embedded in a vehicle 11 shown in FIG. 1 comprises a pair of left and right cameras 12 intended to capture images of the rear and lateral areas of a vehicle body 1, a pair of 10 left and right control devices. 13 for displaying video images captured by the cameras 12, and an electronic control unit 14 for performing data processing to format the video images for display on the control devices 13. [0015] The cameras 12 are housed in the interiors of the housings 15 so as to be oriented towards the rear of the vehicle body 1. The housings 15 are used as camera housings or light housings of the vehicle and are mounted, for example, on both sides 20 left and right of a front part of the vehicle body 1. A direction indicator lamp 16, which is a luminous light, is viewed on an outer surface of each housing 15. The control devices 13 are arranged in front of or near a driver's seat. The electronic control unit 14 is separated from the cameras 12 and the control devices 13 and is placed in a suitable location on the vehicle body 1. The electronic control unit 14 comprises a processing circuit of video image 17 for processing video image data captured by the cameras 12. The video image processing circuit 17 functions as a video image shaping means of the electronic control unit 14. The video image processing circuit 17 is configured to bring video images of the rear and side areas of the vehicle body 1 to be displayed on two parts of control device screens at different compression ratios and to change the compression ratio based on vehicle information. A video image processing by the electronic control unit 14 will then be described in detail with reference to FIGS. 2A-5. FIG. 2A shows a vehicle V moving straight ahead at the level 10 of an intersection. Fig. 2B shows a video image processing when the vehicle V moves straight ahead at the intersection, in which a left portion of Fig. 2B shows an untreated video image that is captured by the camera 12, and a right portion of FIG. 2B shows a processed video image which is displayed on the screen of the control device 13. In FIG. 2B, the reference 1 designates a vehicle body, the reference 2 designates a vehicle following, and reference 3 designates a pedestrian. The processed video image shown in the right portion of FIG. 2B is displayed on the screen of the control device 13 while being divided in two in a horizontal direction. A video image Pa showing the rear of the vehicle body of the vehicle V is displayed on a left portion 13a of the control device screen at a compression ratio A, and a video image Pb showing the side of the body The compression ratio can be expressed as a percentage based on the size of an untreated video image P shown in the left-hand portion of FIG. 2B. In the example illustrated, the compression ratio A of the video image Pa is 100%, and the compression ratio B of the video image Pb is 80%. The compression ratios A, B 3025351 8 indicate horizontal compression ratios, and the video image is processed by the video image processing circuit 17 so that the compression ratio A is greater than the compression ratio B, ie compression ratio A> compression ratio B. By adopting this configuration, the video image of the peripheral zone of the vehicle body is displayed so that the external shape of the following vehicle 2 contained in the Video image Pa on the left side 13a is displayed relatively wider, while the external shape of the pedestrian 3 contained in the video image Pb on the right side 13b is displayed relatively narrower. Therefore, when the vehicle is moving straight ahead, the video image of the rear of the vehicle that the driver tends to observe carefully, that is to say the video image Pa which contains the following vehicle 2 rather than the pedestrian 3, can be displayed so as to be easily recognized by the driver. As vehicle information when the vehicle is traveling straight ahead, a signal from a vehicle speed sensor, information from a vehicle navigation system and the like can be used. In the illustrated example, although the video image Pa on the left side 13a is represented at the same size as that of the unprocessed video image P (see left part of FIG. 23), the video image Pa may be displayed larger at a compression ratio A which is equal to or greater than 100%, and therefore, the video image Pb may be displayed smaller at a compression ratio B which is equal to or less than 80. %. [0020] Video image processing when the vehicle V turns left (or right) at the intersection will be described in detail with reference to FIGS. 3A and 3B. Figure 3A shows vehicle V which is about to turn left. A left portion of FIG. 3B shows a video image that is displayed on the control device 13 just before the vehicle V turns to the left. A right portion of Figure 3B shows a captured video image when the vehicle V turns left. In the captured video image to be displayed on the control device 13 when the vehicle V turns left (or right), the compression ratios of the video image that is displayed on two parts of the device screen of control are caused to change when the vehicle V moves. [0021] That is, on the screen of the control device 13, a video image Pa on a left part 13a is displayed at a compression ratio A just before the vehicle turns to the left, and the compression ratio changes to a compression ratio A '(e.g., 80% of an untreated video image) which is smaller than the compression ratio A while the vehicle V 20 turns to the left (compression ratio A> compression ratio A '). On the other hand, a video image Pb on a right portion 13b is displayed at a compression ratio B just before the vehicle V turns to the left, and the compression ratio changes to a compression ratio B '(e.g. , 120% of the untreated image) which is larger than the compression ratio B while the vehicle V turns to the left (compression ratio B <compression ratio B '). By adopting this configuration, the video image of the peripheral zone of the vehicle body is displayed so as to be progressively reduced in size on the left part 13a when the vehicle V moves, while the video image is displayed so as to be progressively increased in size on the right portion 13b as the vehicle moves. Therefore, when the vehicle turns to the right or left, the video images of both sides of the vehicle that the driver tends to observe carefully, that is to say the video image Pb 5 containing the pedestrian 3 that could be struck by the vehicle that turns left, can be displayed on the control device 13 so as to be easily recognized by the driver. As a vehicle information when the vehicle V is turning left or right, a direction change signal, information from the vehicle navigation system, driver's field of view information, and the like may to be used. [0023] Video image processing performed by the electronic control unit when the vehicle moves straight forwards or backwards will be described in detail with reference to the model diagrams of FIGS. 4A-4C. . FIG. 4A shows an untreated video image picked up by the camera 12 while the vehicle 20 remains at a standstill. Figure 4B shows a video image displayed on the control device 13 as the vehicle moves straight forward. Figure 4C shows a video image when the vehicle is moving in reverse. In Figs. 4A to 4C, reference numeral 2 denotes a following vehicle, reference numeral 4 denotes a rear wheel of the vehicle, and 5 denotes a white line on a road surface. Here, the video image processing circuit 17 divides the screen of the control device 13 in two in a vertical direction and processes the video image which is displayed on two upper and lower parts so that the video image is displayed at different compression rates in the vertical direction. That is, when the vehicle moves straight ahead, a video image Pc containing the following vehicle 2 is displayed on a top portion 13c of the control device screen at a location where compression ratio C, and a video image Pd of a road surface containing the rear wheel 4 and the white line 5 on a lower edge of a side window is displayed on a lower portion 13d at a compression ratio D. For example, assuming that the size of the untreated video image P (see FIG. 4A) is 100%, the compression ratio C of the video image Pc is 120%, and the rate the compression ratio D of the video image Pb is 80%. The compression ratios C, D both designate vertical compression ratios. When the vehicle is traveling straight ahead, the video image data is processed so that the compression ratio C is greater than the compression ratio D, ie compression ratio C> compression ratio D , and the video image Pc on the upper part 13c is displayed relatively large. When the vehicle is moving backward, the video image data is processed so that the compression ratio C is smaller than the compression ratio D, ie compression ratio D <compression ratio C, and the compression ratio C Pd video image on the bottom 13d is displayed relatively large. Therefore, the video image immediately behind the vehicle that the driver wants to observe carefully when the vehicle is in reverse, that is to say the video image of the road surface including the rear wheel 4 and the line white 5, can be displayed on the control device 30 13 so that the video image can easily be identified by the driver. Figure 5 shows a video image processing when the vehicle V turns right at the intersection. In the diagram, the reference 6 designates a pedestrian crossing, and the reference 7 designates a bicycle. Here, the cameras 12 are used as wide-field sensors, and a video image captured by each camera 12 is divided in two in a horizontal plane, a display area E at the rear of the vehicle body and a communication area F on one side of the vehicle body is separately recorded in a memory (omitted from the illustration). A video image contained in the two zones E, F is then used for a driving recorder or a communication with an inter-vehicle communication system, and only a video image which is contained in the display area E is displayed on the control device screen using the same method as used when the vehicle is turning left (see Figures 3A and 3B). Therefore, it is possible to store video images of a pedestrian and bicycle 7 near pedestrian crossing 6 which falls into a dead angle especially when the vehicle is turning to the right as a driving history. The invention is not limited to the embodiment which has been described here, and therefore, as illustrated below, the invention can also be implemented by modifying the configurations of the parts. constitutive as required without departing from the spirit and scope of the invention. As shown in FIG. 6, electronic control units 14L, 14R are provided separately on the left and right cameras 12L, 12R. A video image captured by the left camera 12L is shaped at the left electronic control unit 14L to be displayed on a left control device 13L, while a video image captured by the right camera 12R is formatted at the right electronic control unit 14R to be displayed on a right control device 13R. As shown in FIG. 7, electronic control units 14L, 14R are provided separately on the left and right control devices 13L, 13R. A video image captured by a left camera 12L is shaped at the left electronic control unit 14L to be displayed on the left control device 13L, while a video image captured by a right camera 12R is formatted at the right electronic control unit 14R to be displayed on the right control device 13R. A camera on a preceding vehicle is used for optical communication with a following vehicle. For example, a headlight of a bicycle or motorcycle traveling behind the preceding vehicle is started and stopped for a short time, so that an optical signal which signals the presence of the vehicle is transmitted. to the vehicle ahead. The foregoing vehicle receives the optical signal from the bicycle or motorcycle through its camera, so that the driver identifies the presence of the following vehicle. When the preceding vehicle receives an optical signal from the following vehicle when the preceding vehicle is on the point of turning to the right or left or leaving the current lane for an adjacent lane, a voice or visual alarm is issued to the driver of the preceding vehicle.
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. An electronic control unit (14) that performs data processing to format a video image of a peripheral area of a vehicle body (1) that is captured by a camera (12) to display the image video formatted on a control device (13), characterized in that it comprises video image shaping means (17) configured to display the video image data received by the camera (12) on at least two parts of a screen of the control device (13) at different compression rates.
    [0002]
    An electronic control unit (14) according to claim 1, characterized in that the video image shaping means (17) comprises a video image processing circuit which changes the compression ratios of the video images which are displayed on at least two parts of the screen of the control device (13) according to a vehicle information.
    [0003]
    An electronic control unit (14) according to claim 2, characterized in that the video image processing circuit (17) processes the video image data which is displayed on at least the two parts of the video display screen. control device (13) so that the compression ratios differ in a horizontal direction.
    [0004]
    An electronic control unit (14) according to claim 2, characterized in that the video image processing circuit (17) processes the video image data which is displayed on both parts of the screen. the control device (13) so that the compression ratios differ in a vertical direction. 5
    [0005]
    5. A video system in a vehicle characterized in that it comprises: a camera (12) which captures a video image of a peripheral zone of a vehicle body (1); A control device (13) which displays video image data picked up by the camera (12); and an electronic control unit (14) which performs data processing to format a video image to be displayed on the control device (13), the electronic control unit (14) having a processing circuit video image which changes compression rates of a video image which is displayed on at least two parts of a screen of the control device (13) according to a vehicle information.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3025351B1|2017-06-09|
    JP2016048839A|2016-04-07|
    DE102015216285A1|2016-03-03|
    US20160059781A1|2016-03-03|
    US10994655B2|2021-05-04|
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    法律状态:
    2016-07-12| PLFP| Fee payment|Year of fee payment: 2 |
    2016-07-29| PLSC| Search report ready|Effective date: 20160729 |
    2017-07-07| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-12| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-15| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014172896A|JP2016048839A|2014-08-27|2014-08-27|Electronic control unit and video system for vehicle|
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