Detecting mechanical interactions

  • US 6,504,531 B1
  • Filed: 01/18/2001
  • Issued: 01/07/2003
  • Est. Priority Date: 05/20/1999
  • Status: Expired due to Term
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First Claim
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1. A fabric-made position detector comprising:

  • a first fabric electrically conducting layer;

    wherein said first electrically conducting layer has a first electrical contact and a second electrical contact and said second electrically conducting layer has a third electrically conducting contact and a fourth electrically conducting contact;

    potential applying means (a) for applying potential across said first contact and said third contact while said second and fourth contacts are disconnected to produce a first current and (b) for applying a potential across said second contact and said fourth contact while said first and third contacts are disconnected to produce a second current;

    current measuring means for measuring said first current to produce a first current value and for measuring said second current to produce a second current value; and

    processing means configured to produce a property value indicating a property of a mechanical interaction by processing said first current value in combination with said second current value.

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