IMAGING AND DISPLAY SYSTEM FOR VEHICLE

• US 20110193961A1
• Filed: 02/09/2011
• Published: 08/11/2011
• Est. Priority Date: 02/10/2010
• Status: Active Grant

• Current Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Original Assignee: Magna Mirrors of America Incorporated (Magna International Incorporated)
• Inventors: Peterson, Kenneth C.
• Granted Patent: US 8,890,955 B2
• Time in Patent Office: Days
• US Class Current: 348/148
• 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 2001/1215 with information displays
• CPC Class Codes: B60R 2300/406 using wireless transmission
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source

Abstract

A vision system for a vehicle includes a camera subsystem and a display subsystem. The camera subsystem includes an imaging sensor disposed at an equipped vehicle that captures image data, and the camera subsystem wirelessly transmits the image data. The display subsystem includes a video display screen disposed in the equipped vehicle for displaying images for viewing by a driver of the equipped vehicle when the driver is normally operating the equipped vehicle. The display subsystem is operable to receive the transmitted image data from the camera subsystem. The display subsystem transmits an error signal responsive to processing of the image data and the camera subsystem receives the error signal and at least one of (a) adjusts a compression factor of the image data responsive to the error signal and (b) adjusts a transmission rate of the image data responsive to the error signal.

Claims

1. A vehicular vision system for a vehicle, said vehicular vision system comprising:

a camera subsystem, said camera subsystem comprising an imaging sensor disposed at a vehicle equipped with said vehicular vision system, said imaging sensor capturing image data and said camera subsystem wirelessly transmitting said image data;

a display subsystem comprising a video display screen disposed in the equipped vehicle for displaying images for viewing by a driver of the equipped vehicle when the driver is normally operating the equipped vehicle, wherein said display subsystem is operable to receive said transmitted image data from said camera subsystem; and

wherein said display subsystem transmits an error signal responsive to processing of said image data and wherein said camera subsystem receives said error signal and at least one of (a) adjusts a compression factor of said image data responsive to said error signal and (b) adjusts a transmission rate of said image data responsive to said error signal.

2. The vehicular vision system of claim 1, wherein said vehicular vision system comprises an aftermarket vision system, and wherein said camera subsystem is electrically connected to a power source of the equipped vehicle and wherein said display subsystem is electrically connected to a power source of the equipped vehicle.

3. The vehicular vision system of claim 1, wherein said imaging sensor has an exterior field of view of an area exterior of the equipped vehicle.

4. The vehicular vision system of claim 3, wherein said imaging sensor has a rearward field of view relative to a direction of travel of the equipped vehicle.

5. The vehicular vision system of claim 4, wherein said imaging sensor comprises an imaging sensor that is operable to capture rearward images to assist the driver of the equipped vehicle during a reversing maneuver of the equipped vehicle.

6. The vehicular vision system of claim 1, wherein said camera subsystem comprises a decoder that converts a composite video signal from said imaging sensor to digital image data.

7. The vehicular vision system of claim 1, wherein said camera subsystem compresses said image data and transmits said compressed image data.

8. The vehicular vision system of claim 7, wherein said display subsystem decompresses said compressed image data.

9. The vehicular vision system of claim 8, wherein said display subsystem encodes said decompressed image data for display by said video display screen.

10. The vehicular vision system of claim 1, wherein said camera subsystem adjusts a compression factor of said image data responsive to said error signal.

11. The vehicular vision system of claim 10, wherein said camera subsystem increases said compression factor responsive to said error signal being indicative of a detection of an increase in errors in said image data.

12. The vehicular vision system of claim 10, wherein said camera subsystem decreases said compression factor responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

13. The vehicular vision system of claim 1, wherein said camera subsystem adjusts a transmission rate of said image data responsive to said error signal.

14. The vehicular vision system of claim 13, wherein said camera subsystem decreases said transmission rate responsive to said error signal being indicative of a detection of an increase in errors in said image data.

15. The vehicular vision system of claim 13, wherein said camera subsystem increases said transmission rate responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

16. The vehicular vision system of claim 1, wherein said camera subsystem, responsive to said error signal, adjusts a bandwidth required to wirelessly transmit said image data.

17. The vehicular vision system of claim 1, wherein said camera subsystem, responsive to said error signal being indicative of a detection of an increase in errors in said image data, at least one of (a) reduces or eliminates portions of the video image data before compression, (b) reduces or eliminates color information, (c) reduces image resolution and (d) reduces an image capture frame rate.

18. A vehicular vision system for a vehicle, said vehicular vision system comprising:

a camera subsystem, said camera subsystem comprising an imaging sensor disposed at a vehicle equipped with said vehicular vision system and having a rearward field of view rearward of the equipped vehicle, said imaging sensor capturing image data and said camera subsystem wirelessly transmitting said image data;

a display subsystem comprising a video display screen disposed in an interior rearview mirror assembly of the equipped vehicle for displaying images for viewing by a driver of the equipped vehicle through a transflective reflector of a transflective reflective element of said interior rearview mirror assembly when the driver is normally operating the equipped vehicle, wherein said display subsystem is operable to receive said transmitted image data from said camera subsystem; and

wherein said display subsystem transmits an error signal responsive to processing of said image data and wherein said camera subsystem receives said error signal and at least one of (a) adjusts a compression factor of said image data responsive to said error signal and (b) adjusts a transmission rate of said image data responsive to said error signal.

19. The vehicular vision system of claim 18, wherein said camera subsystem adjusts a compression factor of said image data responsive to said error signal, and wherein said camera subsystem increases said compression factor responsive to said error signal being indicative of a detection of an increase in errors in said image data and decreases said compression factor responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

20. The vehicular vision system of claim 18, wherein said camera subsystem adjusts a transmission rate of said image data responsive to said error signal, and wherein said camera subsystem decreases said transmission rate responsive to said error signal being indicative of a detection of an increase in errors in said image data and increases said transmission rate responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

21. The vehicular vision system of claim 18, wherein said camera subsystem, responsive to said error signal, adjusts a bandwidth required to wirelessly transmit said image data.

22. A vehicular vision system for a vehicle, said vehicular vision system comprising:

a camera subsystem, said camera subsystem comprising an imaging sensor disposed at a vehicle equipped with said vehicular vision system and having a field of view exterior the vehicle, said imaging sensor capturing image data and said camera subsystem wirelessly transmitting said image data;

a display subsystem comprising a video display screen disposed in the equipped vehicle for displaying images for viewing by a driver of the equipped vehicle when the driver is normally operating the equipped vehicle, wherein said display subsystem is operable to receive said transmitted image data from said camera subsystem;

wherein said display subsystem transmits an error signal responsive to processing of said image data and wherein said camera subsystem receives said error signal and at least one of (a) adjusts a compression factor of said image data responsive to said error signal and (b) adjusts a transmission rate of said image data responsive to said error signal; and

wherein said camera subsystem, responsive to said error signal being indicative of a detection of an increase in errors in said image data, at least one of (a) reduces or eliminates portions of the video image data before compression, (b) reduces or eliminates color information, (c) reduces image resolution and (d) reduces an image capture frame rate.

23. The vehicular vision system of claim 22, wherein said camera subsystem adjusts a compression factor of said image data responsive to said error signal, and wherein said camera subsystem increases said compression factor responsive to said error signal being indicative of a detection of an increase in errors in said image data and decreases said compression factor responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

24. The vehicular vision system of claim 22, wherein said camera subsystem adjusts a transmission rate of said image data responsive to said error signal, and wherein said camera subsystem decreases said transmission rate responsive to said error signal being indicative of a detection of an increase in errors in said image data and increases said transmission rate responsive to said error signal being indicative of a detection of a decrease in errors in said image data.

25. The vehicular vision system of claim 22, wherein said camera subsystem, responsive to said error signal, adjusts a bandwidth required to wirelessly transmit said image data.