VEHICULAR REAR BACKUP VISION SYSTEM WITH VIDEO DISPLAY

• US 20200215974A1
• Filed: 03/16/2020
• Published: 07/09/2020
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: Magna Electronics Incorporated (Magna International Incorporated)
• Original Assignee: Magna Electronics Incorporated (Magna International Incorporated)
• Inventors: Lynam, Niall R.
• Granted Patent: US 10,814,785 B2
• Time in Patent Office: Days
• CPC Class Codes: B60R 1/00 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
• CPC Class Codes: B60R 1/27 providing all-round vision, e.g. using omnidirectional cameras
• CPC Class Codes: B60R 1/28 with an adjustable field of view
• CPC Class Codes: B60R 11/04 Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
• CPC Class Codes: B60R 2300/20 characterised by the type of display used
• CPC Class Codes: B60R 2300/607 from a bird's eye viewpoint
• CPC Class Codes: B60R 2300/70 characterised by an event-triggered choice to display a specific image among a selection of captured images
• CPC Class Codes: B60R 2300/802 for monitoring and displaying vehicle exterior blind spot views
• CPC Class Codes: B62D 15/0295 by overlaying a vehicle path based on present steering angle over an image without processing that image
• CPC Class Codes: G06T 2210/22 Cropping
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 23/69 Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
• CPC Class Codes: H04N 23/698 for achieving an enlarged field of view, e.g. panoramic image capture
• CPC Class Codes: H04N 23/90 Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
• CPC Class Codes: H04N 25/76 Addressed sensors, e.g. MOS or CMOS sensors
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources
• CPC Class Codes: H04N 7/188 Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position signal generation from motion picture films H04N5/253

Abstract

A vehicular rear backup vision system includes a rear backup digital color camera and a display device including a video display screen disposed in an interior cabin of the vehicle and viewable by a driver of the vehicle. Upon initial ignition on of the vehicle that commences a new ignition cycle of the vehicle, the rear backup digital color camera is electrically powered. After engine startup of the vehicle, the vehicular rear backup vision system displays on the video display screen rear backup color video images solely derived from image data captured by the rear backup digital color camera no later than 2 seconds after the driver of the vehicle first shifts a vehicle transmission of the vehicle into reverse gear to commence a first backup event. The rear backup digital color camera remains electrically powered at least until the first backup event is completed.

Claims

1. A vehicular rear backup vision system, said vehicular rear backup vision system comprising:

a rear backup digital color camera disposed at a rear portion of a vehicle equipped with said vehicular rear backup vision system;

said rear backup digital color camera having a field of view exterior and at least rearward of the equipped vehicle;

wherein said rear backup digital color camera comprises a CMOS imaging array sensor;

a display device comprising a video display screen disposed in an interior cabin of the equipped vehicle and viewable by a driver of the equipped vehicle, said video display screen having a diagonal dimension of at least 5 inches;

wherein, upon initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered;

wherein, after engine startup of the equipped vehicle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 2 seconds after the driver of the equipped vehicle first shifts a vehicle transmission of the equipped vehicle into reverse gear to commence a first backup event;

wherein image data captured by said rear backup digital color camera is conveyed to an accessory of the equipped vehicle via low-voltage differential signaling (LVDS); and

wherein said rear backup digital color camera remains electrically powered at least until the first backup event is completed.

2. The vehicular rear backup vision system of claim 1, wherein, upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a backup event subsequent to the first backup event and until the subsequent backup event is completed, said video display screen displays color video images derived, at least in part, from image data captured by said rear backup digital color camera.

3. The vehicular rear backup vision system of claim 2, wherein said video display screen is operable to display navigation information for viewing by the driver of the equipped vehicle other than when a backup event is being executed by the driver of the equipped vehicle.

4. The vehicular rear backup vision system of claim 2, wherein said video display screen is operable to display infotainment information for viewing by the driver of the equipped vehicle other than when a backup event is being executed by the driver of the equipped vehicle.

5. The vehicular rear backup vision system of claim 2, wherein said video display screen has a diagonal dimension of at least 7 inches.

6. The vehicular rear backup vision system of claim 5, wherein said video display screen has an aspect ratio of 16:

9.

7. The vehicular rear backup vision system of claim 2, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

8. The vehicular rear backup vision system of claim 2, wherein said video display screen is disposed at a rearview mirror assembly of the equipped vehicle.

9. The vehicular rear backup vision system of claim 2, wherein said video display screen is disposed at an instrument panel of the equipped vehicle.

10. The vehicular rear backup vision system of claim 2, wherein said video display screen is disposed at a center console of the equipped vehicle.

11. The vehicular rear backup vision system of claim 2, wherein said video display screen comprises an organic light emitting diode (OLED) display screen.

12. The vehicular rear backup vision system of claim 2, wherein said video display screen comprises a thin film transistor (TFT) liquid crystal display screen.

13. The vehicular rear backup vision system of claim 1, wherein said vehicular rear backup vision system operates in an initial condition that applies to the first backup event, and wherein said vehicular rear backup vision system operates different than how said vehicular rear backup vision system operates in the initial condition during subsequent backup events of the equipped vehicle that occur within the ignition cycle after the first backup event is completed.

14. The vehicular rear backup vision system of claim 1, wherein said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 500 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the first backup event.

15. The vehicular rear backup vision system of claim 1, wherein said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 900 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the first backup event.

16. The vehicular rear backup vision system of claim 1, wherein said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 1,500 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the first backup event.

17. The vehicular rear backup vision system of claim 1, wherein a user input is provided that, when operated by the driver of the equipped vehicle and after a time period starting at commencement of a backup event of the equipped vehicle has elapsed during which rear backup color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen, changes to display on said video display screen of other color video images that are derived, at least in part, from image data captured by said rear backup digital color camera.

18. The vehicular rear backup vision system of claim 17, wherein the other color video images comprise zoomed color video images derived from image data captured by said rear backup digital color camera.

19. The vehicular rear backup vision system of claim 18, wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the field of view of said rear backup digital color camera encompasses the trailer hitch, and wherein the zoomed color video images comprise color video images of the trailer hitch that are displayed on said video display screen so that the driver of the equipped vehicle can view the trailer hitch when maneuvering the equipped vehicle to connect a ball of the trailer hitch to a tongue of a trailer.

20. The vehicular rear backup vision system of claim 1, wherein the accessory of the equipped vehicle to which image data captured by said rear backup digital color camera is conveyed via low-voltage differential signaling (LVDS) comprises an electronic control unit, and wherein a driver side camera is disposed at a driver side exterior sideview mirror assembly of the equipped vehicle, said driver side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a passenger side camera is disposed at a passenger side exterior sideview mirror assembly of the equipped vehicle, said passenger side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a front camera is disposed at a front portion of the equipped vehicle, said front camera having a field of view exterior and at least forward of the equipped vehicle, and wherein said electronic control unit of said vehicular rear backup vision system forms composite color video images (i) derived from image data captured by said rear backup digital color camera, (ii) derived from image data captured by said driver side camera, (iii) derived from image data captured by said passenger side camera and (iv) derived from image data captured by said front camera.

21. The vehicular rear backup vision system of claim 20, wherein said video display screen displays the composite color video images during a backup event of the equipped vehicle.

22. The vehicular rear backup vision system of claim 21, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

23. The vehicular rear backup vision system of claim 22, wherein the composite color video images comprise bird'"'"'s-eye view color video images.

24. The vehicular rear backup vision system of claim 23, wherein said video display screen displays rear backup color video images solely derived from image data captured by said rear backup digital color camera in tandem with display of the composite color video images that comprise bird'"'"'s-eye view color video images.

25. The vehicular rear backup vision system of claim 1, wherein a valid and stable video signal is available from said rear backup digital color camera no later than 500 milliseconds after electricity is provided to said rear backup digital color camera.

26. The vehicular rear backup vision system of claim 1, wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the trailer hitch is within the field of view of said rear backup digital color camera.

27. The vehicular rear backup vision system of claim 26, wherein image data captured by said rear backup digital color camera is cropped to form zoomed color video images of the trailer hitch that are displayed on said video display screen.

28. The vehicular rear backup vision system of claim 27, wherein the field of view of said rear backup digital color camera, before cropping to form zoomed color video images, is at least 180 degrees.

29. The vehicular rear backup vision system of claim 1, wherein said rear backup digital color camera remains electrically powered after the first backup event is completed.

30. The vehicular rear backup vision system of claim 29, wherein said rear backup digital color camera ceases to be electrically powered upon elapse of a period of time after the first backup event is completed.

31. The vehicular rear backup vision system of claim 30, wherein the period of time is 60 seconds.

32. The vehicular rear backup vision system of claim 1, wherein said rear backup digital color camera ceases to be electrically powered after the first backup event is completed, and wherein, after completion of the first backup event, and when the driver of the equipped vehicle next shifts the vehicle transmission into reverse gear during the ignition cycle to commence a subsequent backup event, said rear backup digital color camera is electrically powered no later than 200 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the subsequent backup event.

33. The vehicular rear backup vision system of claim 1, wherein, during a backup event of the equipped vehicle, image data captured by said rear backup digital color camera is provided to and is processed by an image processor to generate an alert that alerts the driver of the equipped vehicle to presence of an object rearward of the equipped vehicle.

34. The vehicular rear backup vision system of claim 1, wherein color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen for the duration of the first backup event.

35. The vehicular rear backup vision system of claim 1, wherein, with reverse gear of the vehicle transmission of the equipped vehicle having been selected by the driver of the equipped vehicle to commence a backup event, color video images derived, at least in part, from image data captured by said rear backup digital color camera are displayed on said video display screen while the vehicle remains in reverse gear and cease to be displayed upon shifting by the driver of the vehicle transmission of the equipped vehicle out of reverse gear.

36. The vehicular rear backup vision system of claim 1, wherein, with reverse gear of the vehicle transmission of the equipped vehicle having been selected by the driver of the equipped vehicle, color video images derived, at least in part, from image data captured by said rear backup digital color camera are displayed on said video display screen while the vehicle remains in reverse gear and continue to be displayed after shifting by the driver of the vehicle transmission of the equipped vehicle out of reverse gear until a threshold condition is met.

37. The vehicular rear backup vision system of claim 36, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle travels forward at least a threshold distance.

38. The vehicular rear backup vision system of claim 37, wherein the threshold distance is 30 feet.

39. The vehicular rear backup vision system of claim 36, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle drives forward and the equipped vehicle'"'"'s forward motion reaches a threshold speed.

40. The vehicular rear backup vision system of claim 39, wherein the threshold speed is 10 miles per hour.

41. The vehicular rear backup vision system of claim 36, wherein the threshold condition is met when a time period elapses after the vehicle transmission of the equipped vehicle is shifted out of reverse gear.

42. The vehicular rear backup vision system of claim 41, wherein the time period is 10 seconds.

43. The vehicular rear backup vision system of claim 1, wherein color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen for the duration of the first backup event.

44. The vehicular rear backup vision system of claim 1, wherein, within 200 milliseconds of initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered.

45. The vehicular rear backup vision system of claim 1, wherein, within 150 milliseconds of initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered.

46. The vehicular rear backup vision system of claim 1, wherein, within 100 milliseconds of initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered.

47. The vehicular rear backup vision system of claim 1, wherein, at initial ignition on, initiation of said display device and initiation of said rear backup digital color camera occur in parallel.

48. The vehicular rear backup vision system of claim 1, wherein said video display screen has a diagonal dimension of at least 7 inches, and wherein the field of view of said rear backup digital color camera is at least 180 degrees.

49. The vehicular rear backup vision system of claim 1, wherein the accessory of the equipped vehicle to which image data captured by said rear backup digital color camera is conveyed via low-voltage differential signaling (LVDS) comprises an electronic control unit.

50. The vehicular rear backup vision system of claim 1, wherein the accessory of the equipped vehicle to which image data captured by said rear backup digital color camera is conveyed via low-voltage differential signaling (LVDS) comprises a display system of the equipped vehicle.

51. The vehicular rear backup vision system of claim 50, wherein the display system of the equipped vehicle comprises the display device comprising the video display screen disposed in the interior cabin of the equipped vehicle and viewable by the driver of the equipped vehicle.

52. A vehicular rear backup vision system, said vehicular rear backup vision system comprising:

a rear backup digital color camera disposed at a rear portion of a vehicle equipped with said vehicular rear backup vision system;

said rear backup digital color camera having a field of view exterior and at least rearward of the equipped vehicle;

wherein said rear backup digital color camera comprises a CMOS imaging array sensor;

a display device comprising a video display screen disposed in an interior cabin of the equipped vehicle and viewable by a driver of the equipped vehicle, said video display screen having a diagonal dimension of at least 7 inches;

wherein, after engine startup of the equipped vehicle following initial ignition on that commences a new ignition cycle of the equipped vehicle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 2 seconds after the driver of the equipped vehicle first shifts a vehicle transmission of the equipped vehicle into reverse gear to commence a first backup event;

wherein said rear backup digital color camera remains electrically powered until the first backup event is completed;

wherein said rear backup digital color camera remains electrically powered after the first backup event is completed;

wherein image data captured by said rear backup digital color camera is conveyed to an accessory of the equipped vehicle via low-voltage differential signaling (LVDS); and

wherein, with reverse gear of the vehicle transmission of the equipped vehicle having been selected by the driver of the equipped vehicle, color video images derived, at least in part, from image data captured by said rear backup digital color camera are displayed on said video display screen while the vehicle remains in reverse gear and continue to be displayed after shifting by the driver of the vehicle transmission of the equipped vehicle out of reverse gear until a threshold condition is met.

53. The vehicular rear backup vision system of claim 52, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle travels forward at least a threshold distance.

54. The vehicular rear backup vision system of claim 53, wherein the threshold distance is 30 feet.

55. The vehicular rear backup vision system of claim 52, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle drives forward and the equipped vehicle'"'"'s forward motion reaches a threshold speed.

56. The vehicular rear backup vision system of claim 55, wherein the threshold speed is 10 miles per hour.

57. The vehicular rear backup vision system of claim 52, wherein the threshold condition is met when a time period elapses after the vehicle transmission of the equipped vehicle is shifted out of reverse gear.

58. The vehicular rear backup vision system of claim 57, wherein the time period is 10 seconds.

59. The vehicular rear backup vision system of claim 52, wherein the accessory of the equipped vehicle to which image data captured by said rear backup digital color camera is conveyed via low-voltage differential signaling (LVDS) comprises an electronic control unit, and wherein a driver side camera is disposed at a driver side exterior sideview mirror assembly of the equipped vehicle, said driver side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a passenger side camera is disposed at a passenger side exterior sideview mirror assembly of the equipped vehicle, said passenger side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a front camera is disposed at a front portion of the equipped vehicle, said front camera having a field of view exterior and at least forward of the equipped vehicle, and wherein said electronic control unit of said vehicular rear backup vision system forms composite color video images (i) derived from image data captured by said rear backup digital color camera, (ii) derived from image data captured by said driver side camera, (iii) derived from image data captured by said passenger side camera and (iv) derived from image data captured by said front camera, and wherein the composite color video images comprise bird'"'"'s-eye view images, and wherein said video display screen displays the composite color video images during a backup event of the equipped vehicle.

60. The vehicular rear backup vision system of claim 59, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

61. The vehicular rear backup vision system of claim 52, wherein a user input is provided that, when operated by the driver of the equipped vehicle and after a time period starting at commencement of a backup event of the equipped vehicle has elapsed during which rear backup color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen, changes to display on said video display screen of zoomed color video images derived from image data captured by said rear backup digital color camera, and wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the field of view of said rear backup digital color camera encompasses the trailer hitch, and wherein the zoomed color video images comprise color video images of the trailer hitch that are displayed on said video display screen so that the driver of the equipped vehicle can view the trailer hitch when maneuvering the equipped vehicle to connect a ball of the trailer hitch to a tongue of a trailer.

62. The vehicular rear backup vision system of claim 52, wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the field of view of said rear backup digital color camera encompasses the trailer hitch, and wherein image data captured by said rear backup digital color camera is cropped to form zoomed color video images of the trailer hitch that are displayed on said video display screen.

63. The vehicular rear backup vision system of claim 52, wherein said rear backup digital color camera ceases to be electrically powered upon elapse of a period of time after the first backup event is completed.

64. The vehicular rear backup vision system of claim 63, wherein the period of time is 60 seconds.

65. The vehicular rear backup vision system of claim 52, wherein color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen for the duration of the first backup event.

66. The vehicular rear backup vision system of claim 52, wherein, during a backup event of the equipped vehicle, image data captured by said rear backup digital color camera is provided to and is processed by an image processor to generate an alert that alerts the driver of the equipped vehicle to presence of an object rearward of the equipped vehicle.

67. The vehicular rear backup vision system of claim 52, wherein, after the first backup event is completed and upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a subsequent backup event during the ignition cycle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 500 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the subsequent backup event.

68. The vehicular rear backup vision system of claim 52, wherein, after the first backup event is completed and upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a subsequent backup event during the ignition cycle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 900 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the subsequent backup event.

69. The vehicular rear backup vision system of claim 52, wherein, after the first backup event is completed and upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a subsequent backup event during the ignition cycle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 1,500 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the subsequent backup event.

70. The vehicular rear backup vision system of claim 52, wherein, after the first backup event is completed and upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a subsequent backup event during the ignition cycle, said vehicular rear backup vision system prohibits until the subsequent backup event is completed display on said video display screen of color video images other than color video images derived, at least in part, from image data captured by said rear backup digital color camera.

71. The vehicular rear backup vision system of claim 52, wherein said vehicular rear backup vision system operates in an initial condition that applies to the first backup event, and wherein said vehicular rear backup vision system operates different than how said vehicular rear backup vision system operates in the initial condition during subsequent backup events of the equipped vehicle that occur within the ignition cycle after the first backup event is completed.

72. The vehicular rear backup vision system of claim 52, wherein a video signal is available from said rear backup digital color camera no later than 1,500 milliseconds after electricity is provided to said rear backup digital color camera.

73. The vehicular rear backup vision system of claim 52, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

74. The vehicular rear backup vision system of claim 73, wherein, at initial ignition on, initiation of said display device and initiation of said rear backup digital color camera occur in parallel.

75. The vehicular rear backup vision system of claim 73, wherein color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen for the duration of the first backup event.

76. A vehicular rear backup vision system, said vehicular rear backup vision system comprising:

a rear backup digital color camera disposed at a rear portion of a vehicle equipped with said vehicular rear backup vision system;

said rear backup digital color camera having a field of view exterior and at least rearward of the equipped vehicle;

wherein said rear backup digital color camera comprises a CMOS imaging array sensor;

a display device comprising a video display screen disposed in an interior cabin of the equipped vehicle and viewable by a driver of the equipped vehicle, said video display screen having a diagonal dimension of at least 7 inches;

wherein, at initial ignition on, initiation of said display device and initiation of said rear backup digital color camera occur in parallel;

wherein, after engine startup of the equipped vehicle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 2 seconds after the driver of the equipped vehicle shifts a vehicle transmission of the equipped vehicle into reverse gear to commence a first backup event;

wherein said rear backup digital color camera remains electrically powered until the first backup event is completed; and

wherein said rear backup digital color camera remains electrically powered after the first backup event is completed.

77. The vehicular rear backup vision system of claim 76, wherein a user input is provided that, when operated by the driver of the equipped vehicle and after a time period starting at commencement of a backup event of the equipped vehicle has elapsed during which rear backup color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen, changes to display on said video display screen of zoomed color video images derived from image data captured by said rear backup digital color camera, and wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the field of view of said rear backup digital color camera encompasses the trailer hitch, and wherein the zoomed color video images comprise color video images of the trailer hitch that are displayed on said video display screen so that the driver of the equipped vehicle can view the trailer hitch when maneuvering the equipped vehicle to connect a ball of the trailer hitch to a tongue of a trailer.

78. The vehicular rear backup vision system of claim 77, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

79. The vehicular rear backup vision system of claim 76, wherein, upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse to commence a backup event subsequent to the first backup event, said vehicular rear backup vision system prohibits until the subsequent backup event is completed display on said video display screen of color video images other than color video images derived, at least in part, from image data captured by said rear backup digital color camera.

80. The vehicular rear backup vision system of claim 76, wherein, with reverse gear of the vehicle transmission of the equipped vehicle having been selected by the driver of the equipped vehicle, color video images derived, at least in part, from image data captured by said rear backup digital color camera are displayed on said video display screen while the vehicle remains in reverse gear and continue to be displayed after shifting by the driver of the vehicle transmission of the equipped vehicle out of reverse gear until a threshold condition is met.

81. The vehicular rear backup vision system of claim 80, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle travels forward at least a threshold distance.

82. The vehicular rear backup vision system of claim 81, wherein the threshold distance is 30 feet.

83. The vehicular rear backup vision system of claim 80, wherein the threshold condition is met when the vehicle transmission of the equipped vehicle is shifted out of reverse gear into a forward gear and the equipped vehicle drives forward and the equipped vehicle'"'"'s forward motion reaches a threshold speed.

84. The vehicular rear backup vision system of claim 83, wherein the threshold speed is 10 miles per hour.

85. The vehicular rear backup vision system of claim 80, wherein the threshold condition is met when a time period elapses after the vehicle transmission of the equipped vehicle is shifted out of reverse gear.

86. The vehicular rear backup vision system of claim 85, wherein the time period is 10 seconds.

87. The vehicular rear backup vision system of claim 76, wherein image data captured by said rear backup digital color camera is conveyed to an electronic control unit of the equipped vehicle via low-voltage differential signaling (LVDS), and wherein a driver side camera is disposed at a driver side exterior sideview mirror assembly of the equipped vehicle, said driver side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a passenger side camera is disposed at a passenger side exterior sideview mirror assembly of the equipped vehicle, said passenger side camera having a field of view exterior and at least sideward of the equipped vehicle, and wherein a front camera is disposed at a front portion of the equipped vehicle, said front camera having a field of view exterior and at least forward of the equipped vehicle, and wherein said electronic control unit of said vehicular rear backup vision system forms composite color video images (i) derived from image data captured by said rear backup digital color camera, (ii) derived from image data captured by said driver side camera, (iii) derived from image data captured by said passenger side camera and (iv) derived from image data captured by said front camera, and wherein the composite color video images comprise bird'"'"'s-eye view images, and wherein said video display screen displays the composite color video images during a backup event of the equipped vehicle.

88. The vehicular rear backup vision system of claim 87, wherein the field of view of said rear backup digital color camera is at least 180 degrees.

89. The vehicular rear backup vision system of claim 76, wherein the equipped vehicle comprises a trailer hitch disposed at a rear portion of the equipped vehicle, and wherein the field of view of said rear backup digital color camera encompasses the trailer hitch, and wherein image data captured by said rear backup digital color camera is cropped to form zoomed color video images of the trailer hitch that are displayed on said video display screen.

90. The vehicular rear backup vision system of claim 76, wherein color video images solely derived from image data captured by said rear backup digital color camera are displayed on said video display screen for the duration of the first backup event.

91. The vehicular rear backup vision system of claim 76, wherein, during a backup event of the equipped vehicle, image data captured by said rear backup digital color camera is provided to and is processed by an image processor to generate an alert that alerts the driver of the equipped vehicle to presence of an object rearward of the equipped vehicle.

92. The vehicular rear backup vision system of claim 76, wherein, after the first backup event is completed and upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a subsequent backup event during the ignition cycle, said vehicular rear backup vision system displays on said video display screen rear backup color video images solely derived from image data captured by said rear backup digital color camera no later than 1,500 milliseconds after the driver of the equipped vehicle shifts the vehicle transmission into reverse gear to commence the subsequent backup event.

93. The vehicular rear backup vision system of claim 76, wherein upon shifting of the vehicle transmission by the driver of the equipped vehicle into reverse gear to commence a backup event subsequent to the first backup event, said vehicular rear backup vision system prohibits until the subsequent backup event is completed display on said video display screen of color video images other than color video images derived, at least in part, from image data captured by said rear backup digital color camera.

94. The vehicular rear backup vision system of claim 76, wherein said vehicular rear backup vision system operates in an initial condition that applies to the first backup event, and wherein said vehicular rear backup vision system operates different than how said vehicular rear backup vision system operates in the initial condition during subsequent backup events of the equipped vehicle that occur within the ignition cycle after the first backup event is completed.

95. The vehicular rear backup vision system of claim 76, wherein, within 200 milliseconds of initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered.

96. The vehicular rear backup vision system of claim 95, wherein, upon initial ignition on of the equipped vehicle that commences a new ignition cycle of the equipped vehicle, said rear backup digital color camera is electrically powered.