Patent ID: 6447124
Filing Date: 2002-09-10
Classification: B60R

Abstract:
An electro-optic interior rearview mirror system for a vehicle, comprising:an interior mirror housing containing an interior electro-optic mirror unit; at least one light sensor for sensing a light level outside the vehicle; control circuitry, said control circuitry including circuitry responsive to an output of said at least one light sensor to establish a mirror reflectivity of said interior electro-optic mirror unit and including signal processing circuitry, said signal processing circuitry at least one of sending a signal via an output line and receiving a signal via an input line, said signal processing circuitry comprising a microprocessor; said interior mirror housing accommodating at least one additional function selected from a compass display, a navigational display system and an infrared sensor, wherein said control circuitry controls said at least one additional function; and wherein said at least one additional function accommodated in said interior mirror housing connects to a vehicle bus system, and wherein said control circuitry connects said at least one additional function to said vehicle bus system.