JP2010191834A5 - Data processing system - Google Patents

Data processing system Download PDF

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Publication number
JP2010191834A5
JP2010191834A5 JP2009037384A JP2009037384A JP2010191834A5 JP 2010191834 A5 JP2010191834 A5 JP 2010191834A5 JP 2009037384 A JP2009037384 A JP 2009037384A JP 2009037384 A JP2009037384 A JP 2009037384A JP 2010191834 A5 JP2010191834 A5 JP 2010191834A5
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JP
Japan
Prior art keywords
input buffer
analog
capacitance
voltage
processing unit
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Pending
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JP2009037384A
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Japanese (ja)
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JP2010191834A (en
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Priority to JP2009037384A priority Critical patent/JP2010191834A/en
Priority claimed from JP2009037384A external-priority patent/JP2010191834A/en
Publication of JP2010191834A publication Critical patent/JP2010191834A/en
Publication of JP2010191834A5 publication Critical patent/JP2010191834A5/en
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Claims (1)

中央処理装置、前記中央処理装置によって制御されるアナログ・ディジタル変換回路、及び入力バッファを有するマイクロコンピュータと、
前記入力バッファの外部入力端子に分圧ノードが接続された容量分割回路と、
前記外部入力端子に容量電極が接続されたタッチセンサと、を有し、
前記入力バッファは前記外部入力端子から前記アナログ・ディジタル変換回路の入力容量が見えないように隠蔽し、
前記アナログ・ディジタル変換回路は、前記容量分割回路が交流電圧を分圧することによって前記分圧ノードに得られる電圧信号を前記入力バッファ経由で入力して、前記電圧信号をディジタルデータに変換し、
前記中央処理装置は前記ディジタルデータに基づいてタッチセンサの静電容量の変化を検出する、データ処理システム。
A central processing unit, an analog to digital conversion circuit controlled by said central processing unit, and a microcomputer having an input buffer;
A capacitive divider circuit in which a voltage dividing node is connected to an external input terminal of the input buffer;
A touch sensor having a capacitive electrode connected to the external input terminal;
The input buffer conceals the input capacitance of the analog-to-digital converter from the external input terminal.
The analog-to-digital conversion circuit converts a voltage signal into digital data by inputting, via the input buffer, a voltage signal obtained at the voltage dividing node by the capacitance dividing circuit dividing an AC voltage.
The data processing system, wherein the central processing unit detects a change in capacitance of a touch sensor based on the digital data.
JP2009037384A 2009-02-20 2009-02-20 Data processing system and microcomputer Pending JP2010191834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009037384A JP2010191834A (en) 2009-02-20 2009-02-20 Data processing system and microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009037384A JP2010191834A (en) 2009-02-20 2009-02-20 Data processing system and microcomputer

Publications (2)

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JP2010191834A JP2010191834A (en) 2010-09-02
JP2010191834A5 true JP2010191834A5 (en) 2012-03-15

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JP2009037384A Pending JP2010191834A (en) 2009-02-20 2009-02-20 Data processing system and microcomputer

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JP (1) JP2010191834A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9252769B2 (en) * 2011-10-07 2016-02-02 Microchip Technology Incorporated Microcontroller with optimized ADC controller
US9437093B2 (en) 2011-10-06 2016-09-06 Microchip Technology Incorporated Differential current measurements to determine ION current in the presence of leakage current
US8847802B2 (en) * 2011-10-06 2014-09-30 Microchip Technology Incorporated Microcontroller ADC with a variable sample and hold capacitor
US9467141B2 (en) 2011-10-07 2016-10-11 Microchip Technology Incorporated Measuring capacitance of a capacitive sensor with a microcontroller having an analog output for driving a guard ring
US9823280B2 (en) 2011-12-21 2017-11-21 Microchip Technology Incorporated Current sensing with internal ADC capacitor
WO2018212587A1 (en) 2017-05-18 2018-11-22 Samsung Electronics Co., Ltd. X-ray input apparatus, x-ray imaging apparatus having the same, and method of controlling the x-ray input apparatus
KR102274916B1 (en) * 2017-05-18 2021-07-08 삼성전자주식회사 X-ray input apparatus, x-ray imaging apparatus having the same and control method of the x-ray input apparatus
JP6950373B2 (en) 2017-08-31 2021-10-13 オムロン株式会社 Operating device and X-ray imaging unit
JP6863183B2 (en) * 2017-08-31 2021-04-21 オムロン株式会社 Operating device and X-ray imaging unit
JP6879130B2 (en) 2017-08-31 2021-06-02 オムロン株式会社 Operating device and X-ray imaging unit
US10905946B2 (en) 2019-02-28 2021-02-02 Valve Corporation Continuous controller calibration
JP2024518295A (en) * 2021-04-26 2024-05-01 アルプスアルパイン株式会社 Capacitive sensor system and current conveyor for a capacitive sensor system - Patents.com

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
KR20070078522A (en) * 2006-01-27 2007-08-01 삼성전자주식회사 Display device and liquid crystal display

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