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Variable transmission window constructions

  • US 7,542,809 B2
  • Filed: 07/31/2006
  • Issued: 06/02/2009
  • Est. Priority Date: 07/25/2000
  • Status: Expired due to Fees
First Claim
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1. An electrical control system for controlling the transmittance of a plurality of variable transmission windows including at least a first variable transmission window and a second variable transmission window, said control system comprising:

  • a master control circuit for supplying control signals representing transmittance levels for the first and second variable transmission windows;

    a first window control circuit coupled to said master control circuit and to the first variable transmission window; and

    a second window control circuit coupled to said master control circuit and to the second variable transmission window,wherein said first window control circuit is configured to control the transmittance of the first variable transmission window, and wherein said second window control circuit is configured to control the transmittance of the second variable transmission window.

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