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Methods and apparatus for indirect illumination in electronic media rating systems

  • US 7,631,324 B2
  • Filed: 06/08/2005
  • Issued: 12/08/2009
  • Est. Priority Date: 06/08/2005
  • Status: Active Grant
First Claim
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1. An electronic media rating system comprising:

  • an audience image detection system; and

    a non-visible light source, wherein the light source is positioned to provide indirect illumination of an audience member, wherein the non-visible light source is positioned to reflect emitted non-visible light off of a room surface, and wherein the room surface is a ceiling.

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