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TOUCH PANEL

  • US 20130027333A1
  • Filed: 07/26/2012
  • Published: 01/31/2013
  • Est. Priority Date: 07/28/2011
  • Status: Active Grant
First Claim
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1. A touch panel, comprising:

  • a plurality of scanning electrodes;

    a plurality of detection electrodes which intersect the plurality of scanning electrodes;

    first means for inputting a continuous drive pulse train to the plurality of scanning electrodes for each one scanning period in turns;

    second means for extracting pulses at different intervals from a continuous detection pulse train detected by the plurality of detection electrodes, and for generating at least two data sequences;

    third means for generating a frequency spectrum of each of the at least two data sequences;

    fourth means for comparing a signal strength of each frequency component between the frequency spectra of the at least two data sequences, and for generating a frequency spectrum in which frequency components having different strengths have been corrected; and

    fifth means for generating a detection signal from the frequency spectrum generated by the fourth means.

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