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Gestures and touches on force-sensitive input devices

  • US 9,244,562 B1
  • Filed: 07/29/2010
  • Issued: 01/26/2016
  • Est. Priority Date: 07/31/2009
  • Status: Active Grant
First Claim
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1. A device comprising:

  • one or more processors;

    a memory coupled to the one or more processors;

    an input/output interface coupled to the one or more processors configured to receive input from a force-sensitive touch sensor and send output to a display; and

    a touch control module stored in the memory and configured to execute on the one or more processors to;

    recognize touches at a first contact point and a second contact point on the force-sensitive touch sensor;

    determine a magnitude of force applied at the first contact point;

    determine a magnitude of force applied at the second contact point;

    determine a difference between the magnitude of force applied at the first contact point and the magnitude of force applied at the second contact point;

    identify an isometric operation, wherein the isometric operation is an operation in which the determined difference between the magnitude of force applied at the first contact point and the magnitude of force applied at the second contact point is greater than a threshold while a location of the at least one of the first contact point or the second contact point remains substantially the same, the threshold being based at least in part on at least one of the determined magnitude of force applied at the first contact point or the determined magnitude of force applied at the second contact point;

    identify an isotonic operation, wherein the isotonic operation is an operation in which a location of at least one of the first contact point or the second contact point changes while the determined difference between the magnitude of force applied at the first contact point and the magnitude of the force applied at the second contact point is less than the threshold;

    interpret the isometric operation as a first mode of input; and

    interpret the isotonic operation as a second mode of input.

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