Vehicular rear view mirror/video display
A rear view mirror/video display includes a one-way mirror and a selectively activated video display that is mounted immediately behind the one-way mirror so that the driver is presented with a typical semi-obstructed rearward view when the video display is deactivated, and an unobstructed rearward view of substantially the same size and aspect ratio when the video display is activated. The video image is obtained from an imaging device mounted to capture a rearward field-of-view that is unobstructed by vehicle body panels but otherwise corresponds in content with that of the image reflected by the one-way mirror. Activation and deactivation of the video display may be manual, but is preferably automatic based on vehicle operating conditions.
1. A rear view display apparatus for a vehicle comprising:
a housing mounted on or near a windshield of the vehicle and having an opening facing into a passenger compartment of the vehicle;
a one-way mirror captured in the opening of said housing so that a scene rearward of the vehicle is reflected to a driver of the vehicle by said one-way mirror;
a video display device substantially equivalent in size and aspect ratio to said one-way mirror, and disposed in said housing immediately behind said one-way mirror so that when said video display device is activated to display a video image, the driver sees said video image through said one-way mirror;
an imaging device mounted on a rear portion of the vehicle to produce video image signals responsive to said scene rearward of the vehicle; and
control apparatus for receiving the video image signals produced by said imaging device and selectively activating said video display device based on the received video image signals to display a video image of said scene rearward of the vehicle having a field-of-view that matches a field-of-view provided to the driver by said one-way mirror.
2. The rear view display apparatus of claim 1 , wherein said control apparatus receives a reverse input indicating whether said vehicle is being operated in reverse, and automatically activates said video display device based on the received video image signals when said reverse input indicates that said vehicle is being operated in reverse.
3. The rear view display apparatus of claim 2 , wherein said control apparatus automatically deactivates said video display device when said reverse input indicates that said vehicle is not being operated in reverse.
4. The rear view display apparatus of claim 2 , wherein said control unit receives a manual switch input, and changes an activation state of said video display device without regard to said reverse input on activation of said manual switch input.