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ORTHOGONAL SIGNALING TOUCH USER, HAND AND OBJECT DISCRIMINATION SYSTEMS AND METHODS

  • US 20150261375A1
  • Filed: 08/22/2014
  • Published: 09/17/2015
  • Est. Priority Date: 03/17/2014
  • Status: Active Grant
First Claim
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1. A method for distinguishing between sources of simultaneous touch events on a touch sensitive device, the touch sensitive device comprising a plurality of row conductors and a plurality of column conductors, the path of each of the row conductors crossing the path of each of the column conductors, the method comprising:

  • simultaneously transmitting each of a plurality of orthogonal row signals on a respective one of at least some of the plurality of row conductors;

    detecting an amount of each of the plurality of orthogonal row signals present on each of the plurality of column conductors;

    simultaneously transmitting each of a plurality of orthogonal column signals on a respective one of at least some of the column conductors;

    detecting an amount of each of the plurality of orthogonal column signals present on each of the plurality of row conductors;

    detecting an amount of at least one of the plurality of orthogonal row signals present on at least one row conductor;

    detecting an amount of each of the plurality of orthogonal column signals present on at least one column conductor; and

    ,associating each of the plurality of simultaneous touch events with a discrete source based on at least one of;

    the detected amount of at least one of the plurality of orthogonal row signals present on at least one row conductor or the detected amount of each of the plurality of orthogonal column signals present on at least one column conductor.

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