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Using pressure differences with a touch-sensitive display screen

  • US 8,976,128 B2
  • Filed: 09/12/2011
  • Issued: 03/10/2015
  • Est. Priority Date: 09/12/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a touch on a touch-sensitive screen of a personal electronic device, wherein receiving the touch comprises receiving a series of datapoints associated with the touch, wherein each datapoint in the series of datapoints comprises a respective amplitude and a respective size;

    comparing, by the personal electronic device, values of datapoints in the series of datapoints with one another until a difference between a value of a first datapoint from the series of datapoints and a value of a successive datapoint satisfies a pre-defined criterion;

    responsive to determining that the predefined criterion is satisfied, defining a value of a baseline datapoint as equal to a value of the first datapoint;

    computing, by the personal electronic device, an associated pressure of the touch as a function of at least one of an amplitude of the baseline datapoint and a size of the baseline datapoint;

    comparing the associated pressure with a non-zero threshold;

    if the associated pressure is less than the non-zero threshold, performing a first user-interface action; and

    if the associated pressure is not less than the non-zero threshold, performing a second user-interface action distinct from the first user-interface action.

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