Sensor arrangement for use with a touch sensor that identifies hand parts

  • US 8,633,898 B2
  • Filed: 07/30/2007
  • Issued: 01/21/2014
  • Est. Priority Date: 01/26/1998
  • Status: Active Grant
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First Claim
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1. A method of generating input of an electronic system including a touch sensing surface, the method comprising:

  • detecting a first set of a plurality of contacts touched down on or near the surface;

    detecting a liftoff of a first subset of one or more contacts of the first set, wherein a second subset of one or more contacts of the first set remain touched down;

    while the one or more contacts of the second subset remain touched down, detecting a touchdown of a second set, wherein the second set includes one or more contacts of the first subset, each contact in the second set touching down at a corresponding touchdown location, each touchdown location having a relative position to a location of each contact in the second subset; and

    generating input of the electronic system based on the touchdown of the second set independent of the number of contacts in the second subset and independent of at least one of the relative positions.

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