Invention Grant
- Patent Title: Capacitive touch detection system and detection signal receiving and waveform shaping module
- Patent Title (中): 电容触摸检测系统和检测信号接收和波形整形模块
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Application No.: US12827621Application Date: 2010-06-30
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Publication No.: US08436831B2Publication Date: 2013-05-07
- Inventor: Fu-Cheng Wei , Yu-Min Hsu , Yung-Tse Cheng
- Applicant: Fu-Cheng Wei , Yu-Min Hsu , Yung-Tse Cheng
- Applicant Address: TW Hsinchu
- Assignee: Au Optronics Corp.
- Current Assignee: Au Optronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, PC
- Agent Justin King
- Priority: TW98130956A 20090914
- Main IPC: G06F3/044
- IPC: G06F3/044

Abstract:
An exemplary capacitive touch detection system includes a capacitive touch panel and a detection control circuit. The capacitive touch panel includes a plurality of input terminals and output terminals. The detection control circuit includes a scanning signal transmitting module electrically coupled to the input terminals and a detection signal receiving and waveform shaping module including a receiver and an impedance-matching network. The detection signal receiving and waveform shaping module is electrically coupled to the output terminals for receiving and processing a plurality of detection signals outputted from the respective output terminals and thereby producing a plurality of processed detection signals. The receiver is used for receiving the detection signals. The impedance-matching network is used for performing a waveform shaping operation applied to the detection signals to compensate an effect caused by uneven RC loading distribution in the capacitive touch panel and thereby producing the processed detection signals.
Public/Granted literature
- US20110063246A1 CAPACITIVE TOUCH DETECTION SYSTEM AND DETECTION SIGNAL RECEIVING AND WAVEFORM SHAPING MODULE Public/Granted day:2011-03-17
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