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Automatic Display Unit Activation

  • US 20090207122A1
  • Filed: 02/20/2008
  • Published: 08/20/2009
  • Est. Priority Date: 02/20/2008
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a display unit configured to display information to a user and having a backlight to illuminate the display;

    a proximity circuit configured to generate a transmitted signal and to receive a received signal that is indicative of a user'"'"'s proximity; and

    a control unit coupled to the display and the proximity detector and configured to perform;

    obtaining the received signal from the proximity detector;

    analyzing the received signal to determine a current degree of motion;

    when the current degree of motion is not greater than a first predetermined threshold, deactivating the display unit;

    when the current degree of motion is greater than the first predetermined threshold and not greater than a second predetermined threshold, activating the display unit at a first intensity level; and

    when the current degree of motion is greater than the second predetermined threshold, activating the display unit at a second intensity level.

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