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Method and apparatus for single touch zoom using spiral rotation

  • US 8,490,013 B2
  • Filed: 07/30/2009
  • Issued: 07/16/2013
  • Est. Priority Date: 07/30/2009
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • identifying, using at least one processor, an origin on a display device;

    detecting, using the at least one processor, a gesture on the display device at a first location;

    determining, using the at least one processor, a first distance from the origin to the first location;

    tracking, using the at least one processor, movement of the gesture from the first location to a second location;

    determining, using the at least one processor, a second distance from the origin to the second location; and

    determining, using the at least one processor, an action associated with the gesture based on the movement of the gesture and a comparison of the first and second distances;

    wherein;

    the gesture defines a circular area centered at the origin; and

    the action comprises;

    reducing an image displayed on the display device when the movement of the gesture defines an increasing circular area; and

    magnifying the image displayed on the display device when the movement of the gesture defines a decreasing circular area.

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