Digital electrochromic circuit with a vehicle network

  • US 7,679,488 B2
  • Filed: 06/18/2007
  • Issued: 03/16/2010
  • Est. Priority Date: 03/31/2000
  • Status: Active Grant
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First Claim
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1. A vehicular rearview mirror system suitable for use in a vehicle, said vehicular rearview mirror system comprising:

  • an interior rearview mirror assembly comprising an interior electrochromic reflective element, said interior electrochromic reflective element assuming an interior mirror partial reflectance level in response to an interior mirror electrochromic reflective element drive signal;

    a housing for said interior electrochromic reflective element;

    said interior rearview mirror assembly comprising digital circuitry, said digital circuitry supplying said interior mirror electrochromic reflective element drive signal to said interior electrochromic reflective element;

    said digital circuitry comprising a microcontroller;

    said microcontroller controlling over a vehicle network at least one other vehicle function;

    wherein one of said at least one other vehicle function comprises an exterior mirror assembly that includes an exterior electrochromic reflective element that assumes an exterior mirror partial reflectance level in response to an exterior mirror electrochromic reflective element drive signal;

    wherein said microcontroller controls said exterior mirror partial reflectance level of said exterior electrochromic reflective element over said vehicle network; and

    wherein said interior rearview mirror assembly includes at least one of a garage door opener and a forward-facing camera.

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