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System and method for browsing a large document on a portable electronic device

  • US 8,531,571 B1
  • Filed: 08/05/2009
  • Issued: 09/10/2013
  • Est. Priority Date: 08/05/2009
  • Status: Active Grant
First Claim
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1. A method for browsing a document on a portable electronic device, comprising:

  • opening and displaying the document in a document browsing application executing on the portable electronic device;

    determining a state of a user-selectable activation control disposed on the portable electronic device;

    in response to the activation control being in a selected state, reading orientation data from a sensor of the portable electronic device, the orientation data indicating the portable electronic device'"'"'s orientation in space;

    determining from the orientation data that the portable electronic device has rotated in a first predetermined direction about an axis that extends perpendicular to a front of a display screen of the portable electronic device through a center of the display screen of the portable electronic device, and causing the document browsing application to zoom in on a portion of the document being displayed in response to the rotation;

    is in response to the activation control being in a released state, ceasing zooming in response to any further rotation of the portable electronic device.

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