Digital electrochromic mirror system

  • US 6,056,410 A
  • Filed: 07/13/1999
  • Issued: 05/02/2000
  • Est. Priority Date: 04/02/1997
  • Status: Expired due to Fees
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First Claim
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1. A vehicular electrochromic rearview mirror system, comprising:

  • a plurality of electrochromic rearview mirror assemblies and a plurality of electrochromic reflective elements, each associated with one of said electrochromic rearview mirror assemblies, wherein each of said electrochromic reflective elements assumes a partial reflectance level in response to a signal applied thereto;

    a drive circuit applying a drive signal to each of said electrochromic reflective elements, said drive circuit comprising a digital controller, a master drive circuit responsive to said digital controller to apply a first drive signal to one of said electrochromic reflective elements, and a slave drive circuit responsive to said digital controller to apply a second drive signal to a second of said electrochromic reflective elements, said second drive signal derived from said first drive signal.

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