Touch sensing with mobile sensors

  • US 9,552,100 B2
  • Filed: 04/08/2016
  • Issued: 01/24/2017
  • Est. Priority Date: 01/26/1998
  • Status: Expired due to Term
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First Claim
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1. An apparatus comprising:

  • an array of touch sensors;

    a plurality of keys, wherein the array of touch sensors has an area that spans the plurality of keys such that the array of touch sensors senses touches of an object to surfaces of the keys, each key includinga compressible structure on which one or more of the touch sensors is disposed, wherein a force applied by the object to the surface of one of the keys compresses the compressible structure of the key to move the surface of the key by an amount based on the applied force, anda sensing element mounted below the surface of the key, the sensing element being disposed such that the force applied by the object moves the surface of the key toward the sensing element;

    a keypress detector that senses a keypress of one of the keys in response to the force applied by the object on the surface of the key exceeding a threshold force; and

    an input processor that provides an indication of the sensed touch with respect to the area of the touch sensor array and that provides an indication of the sensed keypress.

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