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Touch sensitive processing apparatus and method thereof

  • US 9,804,716 B2
  • Filed: 11/10/2014
  • Issued: 10/31/2017
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. A touch processing device connected to a touch sensitive panel, wherein the touch sensitive panel includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of sensing points formed at intersections of the plurality of first electrodes and the plurality of second electrodes, the touch processing device comprising:

  • a capacitive sensing module for detecting an external conductive object approaching or touching the touch sensitive panel by sequentially sending driving signals via the first electrodes and sensing induced driving signals via the second electrodes and generating a two-dimensional (2D) capacitive sensing information; and

    a transmitter detecting module for detecting a transmitter that transmits an electrical signal via the second electrodes only when approaching or touching the touch sensitive panel in response to the driving signal sent from the capacitive sensing module is detected by the transmitter, and generating at least one two-dimensional (2D) sensing information;

    wherein when the transmitter does not detect the driving signal transmitted by one of the plurality of first electrodes, it does not generate the electrical signal, when the transmitter detects the driving signal transmitted by one of the plurality of first electrodes, it generates the electrical signal;

    wherein the transmitter is an active stylus;

    wherein the at least one 2D sensing information is a sensing information corresponding to the plurality of sensing points with respect to at least one frequency.

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