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User interface and methods

  • US 9,052,790 B2
  • Filed: 05/16/2013
  • Issued: 06/09/2015
  • Est. Priority Date: 01/04/2008
  • Status: Expired due to Fees
First Claim
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1. A method for controlling a dynamic tactile user interface comprising a tactile layer and a substrate, the method comprising:

  • sensing a capacitance value across a portion of a cavity, the tactile layer defining a deformable region and a peripheral region, the peripheral region adjacent the deformable region and coupled to the substrate opposite the tactile surface, and the deformable region cooperating with the substrate to define the cavity;

    estimating a vertical position of the tactile surface at the deformable region according to the sensed capacitance value across the portion of the cavity;

    manipulating a fluid pressure within the cavity to modify a vertical position of the tactile surface at the deformable region according to a difference between the estimated vertical position of the tactile surface at the deformable region and a target vertical position of the tactile surface at the deformable region; and

    sensing an input on the tactile surface at the deformable region according to a change in capacitance value across the portion of the cavity.

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