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Mobile device with on-screen optical navigation

  • US 20050033512A1
  • Filed: 08/05/2004
  • Published: 02/10/2005
  • Est. Priority Date: 08/05/2003
  • Status: Active Grant
First Claim
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1. A mobile device, comprising:

  • a main body;

    a processor and associated memory housed within the main body;

    a display screen housed within the main body and responsive to signals from the processor;

    a color enabled high resolution camera fixed to the main body for capturing successive images and providing color image signals representative of the captured images to the processor; and

    a navigation module associated with the processor for converting the color image signals into lower resolution black-and-white image signals and determining, based on the black-and-white image signals, a relative movement between the main body and a reference surface and moving a pointer on the display screen based on the determined relative movement.

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