Digital electrochromic mirror system

  • US 6,547,404 B2
  • Filed: 09/12/2001
  • Issued: 04/15/2003
  • Est. Priority Date: 04/02/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A vehicular digital electrochromic mirror system, comprising:

  • an interior mirror assembly and at least one exterior mirror assembly, said interior mirror assembly comprising an interior electrochromic reflective element and a control, said at least one exterior mirror assembly comprising an exterior electrochromic reflective element;

    said control comprising at least one light sensor and a microcomputer, said microcomputer establishing an interior reflectance value established by a first pulse-width modulated signal for said interior reflective element and an exterior reflectance value established by a second pulse-width modulated signal for said exterior reflective element, said interior reflective element achieving a partial reflectance level in response to the interior reflectance value, said exterior reflectance element achieving a partial reflectance level in response to the exterior reflectance value;

    a vehicle bus communicating the exterior reflectance value to said exterior reflective element;

    said interior mirror assembly comprising at least one additional accessory; and

    said first and second pulse-width-modulated signals determined by;

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