JP2010191834A5 - Data processing system - Google Patents
Data processing system Download PDFInfo
- 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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- Japan
- Prior art keywords
- input buffer
- analog
- capacitance
- voltage
- processing unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Claims (1)
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.
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)
Publication Number | Publication Date |
---|---|
JP2010191834A JP2010191834A (en) | 2010-09-02 |
JP2010191834A5 true JP2010191834A5 (en) | 2012-03-15 |
Family
ID=42817790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009037384A Pending JP2010191834A (en) | 2009-02-20 | 2009-02-20 | Data processing system and microcomputer |
Country Status (1)
Country | Link |
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JP (1) | JP2010191834A (en) |
Families Citing this family (12)
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)
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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2009
- 2009-02-20 JP JP2009037384A patent/JP2010191834A/en active Pending
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