GB2351055A - Vehicle reversing aid - Google Patents

Vehicle reversing aid Download PDF

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Publication number
GB2351055A
GB2351055A GB9914071A GB9914071A GB2351055A GB 2351055 A GB2351055 A GB 2351055A GB 9914071 A GB9914071 A GB 9914071A GB 9914071 A GB9914071 A GB 9914071A GB 2351055 A GB2351055 A GB 2351055A
Authority
GB
United Kingdom
Prior art keywords
vehicle
reversing aid
view
reversing
display screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9914071A
Other versions
GB9914071D0 (en
Inventor
Albert Franks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9914071A priority Critical patent/GB2351055A/en
Publication of GB9914071D0 publication Critical patent/GB9914071D0/en
Publication of GB2351055A publication Critical patent/GB2351055A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
    • B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
    • B60R1/26—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view to the rear of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1253—Mirror assemblies combined with other articles, e.g. clocks with cameras, video cameras or video screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/105—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using multiple cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/802—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring and displaying vehicle exterior blind spot views
    • B60R2300/8026—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring and displaying vehicle exterior blind spot views in addition to a rear-view mirror system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/8046—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for replacing a rear-view mirror system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/806—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for aiding parking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/8066—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring rearward traffic

Abstract

A vehicle reversing aid which provides the vehicle driver with an enhanced view of the region adjacent to the rear of the vehicle is provided by a video camera and a rear view assembly, characterised in that the assembly includes a first module, typically a rear view mirror (1), and a second module including a display screen (3) to show the image captured by the video camera. The driver simultaneously sees a general view to the rear of the vehicle and a close-up view of the region at the rear of the vehicle as displayed on the screen (3). The display screen 3 may be located within the area of the mirror 1.

Description

2351055 Vehicle reversing aid This invention relates to a vehicle
reversing aid which provides the vehicle driver with an enhanced view of the region adjacent to the rear of the vehicle.
Good awareness of what is behind a moving vehicle is of assistance to the driver at all times but especially when reversing and most particularly when reversing in a confined space. The awareness is important for reasons of safety and for avoiding damage to one or both of the vehicles and consequential disputes between their respective owners and insurers. Neither interior nor exterior mirrors give a clear view of the region adjacent to the rear of the vehicle. A particular difficulty arises in estimating the distance from an adjacent object such as a vehicle or an obstruction. In reversing into a parking space between vehicles at a kerbside many car drivers fin- it hard to judge the distance from the vehicle behind them.
It has hitherto been proposed, particularly for large vehicles, to mount a video camera at the rear of the vehicle to monitor the presence of any object close to the vehicle and to display the video image on a screen on the dashboard so as to indicate the position of the object relative to the vehicle.
The present invention has the objective of providing a clear view for a vehicle driver of all aspects of the situation behind the vehicle.
According to the present invention there is provided a reversing aid for a driver-operated vehicle which has a rear view assembly 3 0 and is fitted at the rear with a video camera directed to an area immediately to the rear of the vehicle, characterised in that the assembly includes two display modules, the first micui e providing a general view to the rear of the vehicle and the 2 second module comprises a display screen to show the image captured by the video camera.
The reversing aid according to the invention offers the advantage of simultaneously presenting to the driver both a general view, usually a wide angle view, to the rear of the vehicle and a close-up view of the area to the rear of the vehicle as displayed on the video screen. This combination has important safety implications in that a single glance takes in the situation distant from the vehicle and immediately adjacent to it. It is also beneficial in that the driver instinctively looks to a rear view unit to assess the position behind the vehicle and thus conveniently takes in whichever view is most relevant. In the case of reversing into a parking space the driver can pay more attention to the video image.
A further advantage of the reversing aid according to the invention is that the video screen does not occupy any space on the vehicle dashboard or console, leaving these free for the customary instrument gauges and controls. Indeed in many modern cars there is no spare space in the region of the dashboard or console.
The first module of the assembly can simply be a conventional rear view mirror but can alternatively be a second display screen linked to a second video camera which is aligned to give a general view to the rear of the vehicle.
The video camera which provides a close-up view (referred to herein as the "close-up" camera) is preferably located in a position at which it gives an angled view to the rear. This can be achieved by mounting the camera at an angle or by facing the camera directly backwards with a small interposed mirror to give the required view. The positioning of the camera and any interposed mirror is desirably such as to give an image which 3 shows both the rear of the vehicle and the leading portion of an adjacent object. Such an image assists in simultaneously showing the vehicle driver both the distance between the vehicle and the object, such that the driver can manoeuvre the vehicle with great precision.
The close-up camera or any interposed mirror is thus suitably located above or below the vehicle's rear bumper (fender) - or the position this would occupy if present - or to one side of the rear of the vehicle. one convenient location is within the vehicle's rear light cluster.
The positioning of the camera(s) is preferably chosen to provide protection against damage and to avoid obstructions to the required view.
Within the assembly the respective locations of the first and second modules are preferably chosen to complement each other. It is preferred that the image from the or each video camera be laterally inverted for display on the screen so as to correspond to the reversal provided by a conventional mirror. Complementary images in the assembly, whether both from video cameras or from a mirror for the general view and video camera for the close-up view, assist in allowing the driver to make a rapid simultaneous assessment of the situation behind the vehicle.
While the close-up view can be located within the area of the general view, it is preferably located outside but immediately adjacent to the general view.
The video camera(s) can be monochrome or colour but monochrome is generally preferred as giving higher sensitivity than a colour camera. For both the general and close-up views the 3 prerred depth of focus is from about 10 mm. to infinity. A wide 4 viewing angle is desirable, from about 70' up to almost 180' and can be provided by a suitable lens, e.g. a fish-eye lens.
In general just one video camera is sufficient for the 5 respective view, but the invention also offers the possibility of using more than one camera. Similarly the assembly can employ several video screens, each screen giving a different view to the rear of the vehicle. Multiple screens showing views from multiple cameras can be shared between different assemblies, for example a screen on a left-hand rear view assembly showing an image to the left of the vehicle, a screen on a right-hand rear view assembly showing an image to the right of the vehicle and a screen on a central interior assembly showing an image viewed from the centre of the vehicle.
The assembly may form an interior rear view unit or an exterior rear view unit. In certain instances it may be desirable for more than one of the rear view units on the vehicle to be an assembly according to the invention, e.g. an interior mirror plus screen and/or left and right side mirrors plus screens. This ensures that the driver is pesented with the close-up rear view from whichever unit is observed.
Examples of suitable display screens include a liquid crystal display (LCD), which may be backlit or reflective, a light emitting polymer (LEP), or a thin film device deposited directly on the rear view mirror.
The camera can typically include a lens module comprising an 10 optical lens that focuses an incoming light signal on to an electronic detector. Examples of suitable detectors include a charge-coupled device (CCD) and a complementary metal oxide semiconductor (CMOS).
Electrical power for the screen(s) and camera(s) can conveniently be supplied by the battery of the vehicle, but an independent power supply for one or more of these can be employed if desired. The screen display can be provided at all times the vehicle power is on, but alternatively can be arranged to be shown only when the vehicle is in its reversing mode. The latter option can be provided by a switch associated with the vehicle gear selection lever.
By way of illustration, the invention is further described with reference to the accompanying figures, in which:
Figure 1 is a view of a first type of rear view assembly in a reversing aid according to the invention.
Figure 2 is a view of a second type of rear view assembly according to the invention.
Figure 3a is a side view of a vehicle fitted with a reversing aid according to the invention and of a second vehicle adjacent thereto.
Figure 3b is a plan view of a vehicle fitted with a reversing aid according to the invention and of a second vehicle adjacent 25 thereto.
Figure 4 is a circuit diagram of a reversing aid according to the invention.
The rear view assembly illustrated in Figure 1 includes a mirror 1 enclosed in a frame 2 to which is clamped a second frame 3 surrounding an LCD screen 4. The assembly is attached to the vehicle windscreen by a support post (not shown) connected to the back of the frame 2.
6 In the alternative version of assembly illustrated in Figure 2 includes a frame 21 encloses a mirror 22 but in this version an LCD screen 23 is located within the area of the mirror surface.
The assembly is again attached to the vehicle windscreen by a support post (not shown) connected to the vehicle roof.
Figures 3a and 3b show a first car 31 fitted with a video camera 33 at the upper part of its boot lid and having an interior rear view assembly (not shown) according to the invention. The car 31 is shown reversing towards a second car 32. The video camera 33 is aligned to have a field of vision indicated by the dotted lines V1 and V2 (figure 3a) and V3 and V4 (figure 3b). In a fore and aft direction the field of vision takes in the rear bumper
34 of the car 31 and the front bumper 35 of the car 32. In a sideways direction the field of vision takes in almost the whole width of the rear bumper 34 of the car 31 and the f ront bumper of the car 32 and of the kerb. The image on the on the display screen of the rear view assembly of car 31 thus gives a clear indication of the distance between the cars and their distance from the kerb.
The Figure 4 circuit diagram shows the wiring input 41 from a car battery (not shown) and a control switch 42 attached to the vehicle's gear selection lever (not shown). The circuit includes a DC converter 43, a video camera 44 and an LCD display unit 45. The DC converter 43, which is located in the boot of the car, provides a stable 12 V DC output f rom the input f rom the car battery. The camera 44 is a monochrome CCD camera with a standard f = 3.6 mm lens.
7

Claims (15)

1. A reversing aid for a driver-operated vehicle which has a rear view assembly and is fitted at the rear with a video camera (33) directed to an area immediately to the rear of the vehicle, characterised in that that the assembly includes two display modules (1,3), the first module (1) providing a general view to the rear of the vehicle and the second module comprises a display screen (3) to show the image captured by the video camera (33).
2. A reversing aid as claimed in claim 1, in which the first module is a rear-view mirror (1).
3. A reversing aid as claimed in claim 1 or claim 2, in which the display screen (3) shows the image from a camera (33) 15 which gives an angled view to the rear.
1. A reversing aid as claimed in claim 1 or claim 2, in which the angled view is provided via an interposed mirror.
5. A reversing aid as claimed in any preceding claim, in which the display screen (3) shows the image from a camera (33) located above or below the vehicle's rear bumper or to one side of the rear of the vehicle.
6. A reversing aid as claimed in claim 4, in which the camera is located within the vehicle's rear light cluster.
7. A reversing aid as claimed in any preceding claim, in which the respective locations of the first and second modules 3 complement each other.
8 8. A reversing aid as claimed in claim 6, in which the image from the video camera (33) is laterally inverted for display on the display screen (3).
9. A reversing aid as claimed in any preceding claim, in which the display screen (3)is located within the area of the first module (1).
10. A reversing aid as claimed in any of claims 1 to 8, in which the display screen (3) is located immediately adjacent to first module (1).
11. A reversing aid as claimed in any preceding claim, which has more than one screen, each screen giving a different view to the rear of the vehicle.
12. A reversing aid as claimed in any preceding claim, which forms an interior rear view unit.
13. A reversing aid as claimed in any of claims 1 to 11, which forms an exterior rear view unit.
14. A reversing aid as claimed in any preceding claim, in which the display screen (3) is selected from a liquid crystal display (LCD), either backlit or reflective, a light emitting polymer (LEP), or a thin film device deposited directly on the rear view mirror.
15. A reversing aid as claimed in any preceding claim, in the screen display is shown only when the vehicle is in )o which its reversing mode.
GB9914071A 1999-06-16 1999-06-16 Vehicle reversing aid Withdrawn GB2351055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9914071A GB2351055A (en) 1999-06-16 1999-06-16 Vehicle reversing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9914071A GB2351055A (en) 1999-06-16 1999-06-16 Vehicle reversing aid

Publications (2)

Publication Number Publication Date
GB9914071D0 GB9914071D0 (en) 1999-08-18
GB2351055A true GB2351055A (en) 2000-12-20

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