Methods and apparatus for controlling illumination

  • US 6,967,448 B2
  • Filed: 10/25/2001
  • Issued: 11/22/2005
  • Est. Priority Date: 12/17/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus, comprising:

  • at least one light source to generate variable color radiation without requiring the use of a color filter; and

    at least one controller, coupled to the at least one light source, to control at least a color of the variable color radiation generated by the at least one light source based on at least one interruption of power supplied to the apparatus.

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