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Signal processing circuit for processing sensing signal from touch panel

  • US 10,503,319 B2
  • Filed: 12/27/2017
  • Issued: 12/10/2019
  • Est. Priority Date: 12/27/2017
  • Status: Active Grant
First Claim
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1. A signal processing circuit comprising:

  • an analog-front-end circuit configured to receive a sensing signal from a touch panel, perform a signal capture operation on the sensing signal to output a current signal; and

    a filter circuit coupled to the analog-front-end circuit and configured to receive the current signal from the analog-front-end circuit and perform a signal filter operation on the current signal to output a first voltage signal,wherein the filter circuit comprises an anti-aliasing filter and a comb filter coupled in series.

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