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System and method for set top box channel state feedback

  • US 20020170073A1
  • Filed: 03/26/2001
  • Published: 11/14/2002
  • Est. Priority Date: 03/26/2001
  • Status: Abandoned Application
First Claim
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1. An apparatus for determining a channel state of a set top box, the apparatus comprising:

  • a sensing stage capable to detect light intensity from various positions on a display and generating output signals based on light intensity detected from each of the various positions;

    a comparison stage communicatively coupled to the sensing stage and capable to generate digital values by comparison of each generated output signals with a threshold value; and

    an interface communicatively coupled to the sensing stage and capable to generate a feedback signal based upon the digital values to indicate a channel state of the set top box.

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