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Apparatus for controlling the position of a screen pointer with low sensitivity to fixed pattern noise

  • US 20060044267A1
  • Filed: 09/01/2004
  • Published: 03/02/2006
  • Est. Priority Date: 09/01/2004
  • Status: Active Grant
First Claim
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1. An apparatus for controlling the position of a screen pointer, the apparatus comprising:

  • a light source configured to illuminate an imaging surface to thereby generate reflected images; and

    a navigation sensor configured to generate digital images based on the reflected images to perform a movement computation based on the digital images, and to generate movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation includes attenuating fixed pattern noise in the digital images.

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