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Trackball system and method for a mobile data processing device

  • US 20080007571A1
  • Filed: 07/10/2006
  • Published: 01/10/2008
  • Est. Priority Date: 07/10/2006
  • Status: Active Grant
First Claim
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1. A data processing device having a memory for storing program code and a processor for processing the program code to generate a graphical user interface (GUI), the GUI comprising:

  • a first predefined region including of a first plurality of selectable graphical elements;

    a second predefined region including a second plurality of selectable graphical elements; and

    a logical barrier between the first predefined region and the second predefined region, the logical barrier configured to temporarily prevent movement from a graphical element in the first predetermined region to a graphical element in the second predetermined region in response to a user input directed towards graphical element in the second predetermined region, the logical barrier temporarily preventing the movement for either a specified period of time and/or a specified amount of movement generated by a user input device.

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