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User identification for multi-user touch screens

  • US 20070273670A1
  • Filed: 05/08/2007
  • Published: 11/29/2007
  • Est. Priority Date: 05/26/2006
  • Status: Active Grant
First Claim
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1. A multi-user touch screen system comprising a touch screen comprising:

  • a transparent and electrically conductive surface arranged to receive touches from users of the touch screen system; and

    touch sensitive elements arranged to detect touches on said surface and at least one control unit connected to said touch sensitive elements and arranged so as to detect the position of the touches detected by said touch sensitive elements, wherein said touch screen system further comprises a touch identification system comprising;

    at least two electrodes;

    at least one transmitting unit for transmitting an identifying signal;

    at least one receiving unit for detecting at least one identifying signal;

    wherein said at least one transmitting unit and said at least one receiving unit are arranged with respect to said electrically conductive surface and said at least two electrodes so that at least one receiving unit detects an unique identifying signal from at least one transmitting unit when a user simultaneously touches the electrically conductive surface and an electrode connected to the receiving unit.

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