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Touch Finding Method and Apparatus

  • US 20100097328A1
  • Filed: 10/21/2008
  • Published: 04/22/2010
  • Est. Priority Date: 10/21/2008
  • Status: Active Grant
First Claim
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1. A method of determining touches from a data set output from a touch screen comprising an array of sensing nodes, the method comprising:

  • a) identifying a node with a maximum signal value among all unassigned nodes, and, if present,b) assigning that node to a touch,c) applying a logical test to each node that is a neighbor to the assigned node to determine if that node should also be assigned to the touch, andd) repeatedly applying the logical test to the unassigned neighbors of each newly assigned node until there are no more newly assigned nodes, or no more unassigned nodes, thereby assigning a group of nodes to the touch defining its area.

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