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Optical pointing system and method for controlling power and/or clock signal thereof

  • US 7,511,699 B2
  • Filed: 02/04/2005
  • Issued: 03/31/2009
  • Est. Priority Date: 02/04/2004
  • Status: Active Grant
First Claim
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1. An optical pointing system comprising:

  • a movement speed sensing unit for calculating a movement speed using a movement value; and

    a variable power unit for varying a magnitude of power supply voltage according to the movement speed,wherein the variable power unit includes;

    a power setting part for outputting a power setting value which is set in correspondence to the movement speed; and

    a power converting part for converting the power setting value into power supply voltage.

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