Multifunction exterior display for a vehicle mirror

• US 20070088481A1
• Filed: 10/17/2005
• Published: 04/19/2007
• Est. Priority Date: 10/17/2005
• Status: Active Grant

• Current Assignee: Lang-Mekra North America LLC
• Original Assignee: Lang-Mekra North America LLC
• Inventors: McCormick, Malcolm
• Granted Patent: US 7,496,439 B2
• Time in Patent Office: Days
• US Class Current: 701/49
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 2001/1215 with information displays

Abstract

A display unit carried in an exterior rearview mirror assembly having a generic display matrix displaying numbers, text and indicia interchangeably. A vehicle status sensor in communication with the display unit for providing vehicle status information for display, and a proximity sensor in communication with the display unit for providing object avoidance information for display in the form of a distance measurement between the vehicle and an object in the vehicle'"'"'s path. A controller carried in the vehicle interior operatively associated with the display unit for selectively displaying object avoidance information or vehicle status information based on whether the vehicle is placed in a reverse gear. A display driver in communication with the controller causes the display unit to display the vehicle status information when the vehicle is not in a reverse gear, and to display the object avoidance information when the vehicle is place in a reverse gear.

Claims

1. An exterior vehicle rearview mirror and display assembly for a heavy duty vehicle having a vehicle cab from which the vehicle is operated, said assembly comprising:

a mirror housing carried on an exterior of the vehicle cab;

a mirror glass carried by said mirror housing having a reflective coating;

a display window included in said reflective coating;

vehicle sensors for generating vehicle status information and object avoidance information;

an exterior display unit carried in said mirror housing having a lightable display viewable by an operator through said display window for selectively displaying one of said vehicle status information and object avoidance information;

an interior control unit disposed interiorly of said cab remote from said mirror housing in communication with said exterior display unit and said vehicle sensors, said interior control unit having a computer readable medium;

a set of computer readable display instructions embodied in said computer readable medium which provide a dual mode operation for selectively displaying one of said vehicle status information and said object avoidance information on said display unit;

said display instructions including instructions for receiving said vehicle status information and said object avoidance information at said control unit, detecting whether said vehicle is placed in a reverse drive, automatically transmitting said vehicle status display information to said display unit in response to detecting the vehicle is not in reverse drive, and automatically transmitting said object avoidance display information to said display unit in response to detecting said vehicle is in reverse drive.

2. The mirror assembly of claim 1 having a controller included in said interior control unit receiving and processing said vehicle status information and said object avoidance information and transmitting said vehicle status information and said object avoidance information to said display unit.

3. The mirror assembly of claim 2 having a display driver included in said interior control unit receiving said vehicle status information and object avoidance information from said controller and transmitting the information to said display unit in a form of display information adapted for display by activating said display unit.

4. The mirror assembly of claim 3 wherein said vehicle sensors includes a proximity sensor for transmitting said object avoidance information to said controller, and a vehicle status sensor for transmitting said vehicle status information to said controller.

5. The mirror assembly of claim 4 including a video camera carried on an exterior of said vehicle for providing said object avoidance information to said controller in the form of video for display on said display unit.

6. The mirror assembly of claim 4 wherein said object avoidance information from said proximity sensor is displayed as a numeric distance measurement approximating a distance between the vehicle and an object in the vehicles path.

7. The mirror assembly of claim 6 wherein said numeric distance measurement is displayed in one of feet, inches and centimeters.

8. The mirror assembly of claim 1 wherein said display unit includes a generic alpha-numeric display matrix viewable through said display window, said display matrix having a capacity to display a variety of reconfigurable display information for switching between displaying said object avoidance information and said vehicle status information.

9. The mirror assembly of claim 8 wherein said alpha-numeric display matrix includes individual LED elements grouped into LED segments with each said segment being reconfigurable by said interior control unit for displaying at least one character of information, and wherein a plurality of LED segments are combined to form said alpha-numeric display matrix.

10. The mirror assembly of claim 9 wherein each said LED segment is defined by five columns of LED elements with seven LED elements vertically aligned in each column.

11. The mirror assembly of claim 8 including a plurality of proximity sensors in communication with said interior control unit for providing said object avoidance information to said display unit, wherein said alpha-numeric display matrix of said display unit is operatively associated with said interior control unit to simultaneously display object avoidance information from multiple proximity sensors.

12. The mirror assembly of claim 8 wherein said alpha-numeric display matrix includes first LED segments grouped together in communication with said interior control unit for displaying said vehicle status information, and second LED segments grouped together in communication with said interior control unit for displaying said object avoidance information, wherein said first and second LED segments can be operated to selectively and/or simultaneously display said vehicle status information and said object avoidance information.

13. The mirror assembly of claim 1 wherein said display unit includes a three digit numeric LED display matrix having first lightable indicia for indicating a temperature reading is being displayed from said vehicle status information, and second lightable indicia for indicating a distance measurement is being displayed from said object avoidance information.

14. The mirror assembly of claim 1 wherein said display window consists of an optically transmissive window formed in said reflective coating adapted for passing light, wherein said display unit is located adjacent said window for displaying through said window.

15. A multifunction information display system for an exterior vehicle rearview mirror assembly on a heavy duty vehicle cab comprising:

a mirror head for attachment to an exterior of the vehicle;

an exterior display unit carried by said mirror head viewable through an adjacent display window having a capacity for displaying one or more of numbers, text and indicia through said display window;

a vehicle status sensor in communication with said display unit providing vehicle status information for display;

a proximity sensor in communication with said display unit providing object avoidance information for display in the form of a distance measurement between the vehicle and an object in the vehicle'"'"'s path;

an interior control unit for being carried on an interior of the vehicle cab in communication with said display unit, said vehicle status sensor, and said proximity sensor; and

,

said interior control unit having a dual mode of operation for selectively displaying one of said object avoidance information and said vehicle status information; and

said control unit switching said display unit from displaying said vehicle status information to displaying said object avoidance information automatically when the vehicle is placed in reverse.

16. The mirror assembly of claim 15 wherein said display unit includes an alpha-numeric display matrix having individual LED elements grouped into LED segments with each said segment being reconfigurable by said interior control unit for displaying at least one character of information, and wherein a plurality of LED segments are combined to form said alpha-numeric display matrix.

17. The system of claim 16 wherein each said LED segment is defined by at least three columns of LED elements with at least three LED elements vertically aligned in each column.

18. The system of claim 17 including a plurality of proximity sensors in communication with said interior control unit for providing said object avoidance information, wherein said alpha-numeric matrix is operatively associated with said interior control unit to simultaneously display information from multiple proximity sensors.

19. The system of claim 15 wherein said display unit includes a three digit numeric LED display matrix having first lightable indicia for indicating a temperature reading is being displayed from said vehicle status information, and second lightable indicia for indicating a distance measurement is being displayed from said object avoidance information.

20. A heavy duty vehicle and exterior sideview mirror assembly comprising:

a vehicle cab from which said vehicle is operated;

an exterior mirror and display assembly carried by an exterior of the vehicle cab;

a mirror housing included in said mirror and display assembly having a mirror glass with a reflective coating;

an optically transmissive display window included in said reflective coating;

an exterior display unit carried in said mirror housing having a generic reconfigurable alpha-numeric display matrix viewable through said display window for displaying numbers, text and indicia;

an interior control unit carried within an interior of the vehicle remotely from said exterior mirror housing and operatively associated with said display unit;

transmission means connecting said interior control unit and said exterior display unit for signal communication;

a plurality of vehicle sensors in communication with said interior control unit for providing sensory input signals representing prescribed display information;

said interior control unit receiving said sensory input signals for generating and transmitting display signals to said display unit; and

,

a display driver operatively associated with said display unit receiving said display signals for activating said display matrix to display said display information in said display window.

21. The mirror assembly of claim 20 having a controller included in said interior control unit receiving said sensory input signals from said vehicle sensors, and transmitting said display signals to said display driver for display.

22. The mirror assembly of claim 21 wherein said controller is configurable to receive a variety of sensory input signals from different vehicle sensors, and wherein said controller converts said variety of sensory input signals for transmission to said display unit as display signals.

23. The mirror assembly of claim 22 wherein said vehicle sensors includes at least one vehicle status sensor for providing sensory input signals designated as vehicle status information, and at least one proximity sensor for providing sensory input signals designated as object avoidance information.

24. The mirror assembly of claim 23 wherein controller switches said display unit from displaying said vehicle status information to displaying said object avoidance information automatically when the vehicle is placed in reverse.

25. The mirror assembly of claim 23 wherein said object avoidance information from said proximity sensor is displayed as a numeric distance measurement approximating a distance between the vehicle and an object in the vehicles path.

26. The mirror assembly of claim 25 wherein said numeric distance measurement is displayed in one of feet, inches and centimeters.

27. The mirror assembly of claim 20 wherein said alpha-numeric display matrix includes individual LED elements grouped into LED segments with each said segment being reconfigurable by said display driver for displaying at least one character of information, and wherein a plurality of LED segments are combined to form said alpha-numeric display matrix having a dual mode capacity to selectively switch said display between prescribed display information.