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US 2014/0152612 A1Published application
Touch system and method of determining low-noise frequency of the same
AssigneeSamsung Electronics Co., Ltd.
InventorsKWANG-HO CHOI, SANG-WOO KIM, CHANG-JU LEE
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Abstract
A touch system includes a touch sensor panel and a touch-screen control circuit. The touch-screen control circuit analyzes a spectrum of noise included in touch data and determines a low-noise driving frequency while the touch screen control circuit senses the touch data input to the touch sensor panel by selectively using prototype digital filters respectively having different filter frequencies from each other.
Claims16
A touch system, comprising:
- a touch sensor panel;
- and
- a touch-screen control circuit configured to analyze a spectrum of noise included in touch data and configured to determine a low-noise driving frequency while the touch screen control circuit senses the touch data input to the touch sensor panel by selectively using a plurality of digital filters respectively having different filter frequencies from each other.
A method of determining a low-noise driving frequency of a touch system, the method comprising:
- sensing touch data input to a touch sensor panel;
- analyzing a spectrum of noise included in the touch data while sensing the touch data by selectively using digital filters respectively having different filter frequencies;
- and
- determining a low-noise driving frequency of the touch system.
1 more element
A touch system, comprising:
- a panel configured to generate an analog signal by sensing a touch;
- and
- a controller configured to convert the analog signal into a digital signal, configured to obtain a frequency spectrum of a noise signal included in the digital signal by a plurality of filters respectively having different center frequencies from each other, and configured to determine a lowest frequency of the obtained frequency spectrum as a driving frequency.
Dependencies are inferred from the claim text.