TOUCH OBJECT DETECTION FOR TOUCH SENSORS
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United States of America Patent
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Feb 10, 2016
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Feb 10, 2016
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Abstract
In one embodiment, a system includes one or more processors and one or more memory units storing logic. The logic is configured to, when executed by the processors, cause the processors to perform operations including detecting a position of a touch object within an area of a touch sensor during a period of time when an injected signal is present on one or more of the plurality of electrodes of the touch sensor. The injected signal is generated by a signal source and electrically coupled to the touch sensor through a source electrode distinct from the plurality of electrodes of the touch sensor. The operations further include identifying a source of the touch object based at least in part on a proximity of the injected signal present on one or more of the plurality of electrodes to the detected position of the touch object.
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