TW200951456A - Capacitive sensing with high-frequency noise reduction - Google Patents
Capacitive sensing with high-frequency noise reductionInfo
- Publication number
- TW200951456A TW200951456A TW098116590A TW98116590A TW200951456A TW 200951456 A TW200951456 A TW 200951456A TW 098116590 A TW098116590 A TW 098116590A TW 98116590 A TW98116590 A TW 98116590A TW 200951456 A TW200951456 A TW 200951456A
- Authority
- TW
- Taiwan
- Prior art keywords
- measurement
- determined
- signal
- signal sample
- measurement cycle
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
- H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/96071—Capacitive touch switches characterised by the detection principle
- H03K2217/960725—Charge-transfer
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5418608P | 2008-05-19 | 2008-05-19 | |
US12/466,230 US8378981B2 (en) | 2008-05-19 | 2009-05-14 | Capacitive sensing with high-frequency noise reduction |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200951456A true TW200951456A (en) | 2009-12-16 |
Family
ID=41399879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW098116590A TW200951456A (en) | 2008-05-19 | 2009-05-19 | Capacitive sensing with high-frequency noise reduction |
Country Status (3)
Country | Link |
---|---|
US (2) | US8378981B2 (zh) |
CN (1) | CN101644973A (zh) |
TW (1) | TW200951456A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI420117B (zh) * | 2010-02-11 | 2013-12-21 | Novatek Microelectronics Corp | 電容感測裝置及觸控感測系統 |
Families Citing this family (35)
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US9569037B2 (en) * | 2008-05-19 | 2017-02-14 | Atmel Corporation | Capacitive sensing with low-frequency noise reduction |
US8941394B2 (en) * | 2008-06-25 | 2015-01-27 | Silicon Laboratories Inc. | Capacitive sensor system with noise reduction |
TWI407355B (zh) * | 2009-11-19 | 2013-09-01 | Elan Microelectronics Corp | Detection and Correction of Capacitive Touchpad |
CN101799734B (zh) * | 2010-03-29 | 2012-05-09 | 深圳龙多电子科技有限公司 | 电容式触摸屏按键检测方法 |
JP5523191B2 (ja) * | 2010-04-30 | 2014-06-18 | 株式会社ジャパンディスプレイ | タッチ検出機能付き表示装置 |
US8884888B2 (en) * | 2010-08-30 | 2014-11-11 | Apple Inc. | Accelerometer determined input velocity |
FR2967278B1 (fr) * | 2010-11-08 | 2013-06-28 | Nanotec Solution | Procede de detection d'objet d'interet dans un environnement perturbe, et dispositif d'interface gestuel mettant en oeuvre ce procede. |
TWI428612B (zh) | 2010-12-10 | 2014-03-01 | Elan Microelectronics Corp | A circuit for sensing a capacitance to be measured and a method thereof |
US20120206399A1 (en) * | 2011-02-10 | 2012-08-16 | Alcor Micro, Corp. | Method and System for Processing Signals of Touch Panel |
CN102707821B (zh) * | 2011-03-28 | 2015-04-22 | 深圳市汇顶科技股份有限公司 | 触摸检测装置的降噪处理方法及系统 |
KR101239880B1 (ko) * | 2011-10-05 | 2013-03-06 | (주)멜파스 | 터치 감지 장치 및 방법 |
TWI451305B (zh) * | 2011-11-25 | 2014-09-01 | 電壓式電容感應觸控裝置及觸控感應方法 | |
EP2629182B1 (en) * | 2012-02-17 | 2019-01-16 | 2236008 Ontario Inc. | System and method for sample rate adaption |
US9236861B2 (en) | 2012-07-02 | 2016-01-12 | Stmicroelectronics Asia Pacific Pte Ltd | Capacitive proximity sensor with enabled touch detection |
CN103970380B (zh) * | 2013-02-01 | 2017-05-10 | 晨星半导体股份有限公司 | 电容式触控系统及其驱动装置 |
CN104237773A (zh) * | 2013-06-17 | 2014-12-24 | 鸿富锦精密工业(深圳)有限公司 | 触摸按键的测试系统及其方法 |
US9535545B2 (en) * | 2013-06-28 | 2017-01-03 | Atmel Corporation | Common mode noise suppression during hovering and proximity detection |
US9367190B2 (en) * | 2013-09-13 | 2016-06-14 | Apex Material Technology Corp. | Touch recognition method and system for a capacitive touch apparatus |
WO2015057164A1 (en) * | 2013-10-18 | 2015-04-23 | Nanyang Technological University | Circuit arrangement and method of operating the same |
US9164137B2 (en) * | 2013-12-05 | 2015-10-20 | Parade Technologies, Ltd. | Tunable baseline compensation scheme for touchscreen controllers |
KR102152727B1 (ko) * | 2014-03-03 | 2020-09-08 | 삼성디스플레이 주식회사 | 액정 표시 장치 |
CN106461711A (zh) * | 2014-03-17 | 2017-02-22 | 麦格纳覆盖件有限公司 | 用于驱动电容传感器的方法和系统 |
US9600121B2 (en) * | 2014-04-25 | 2017-03-21 | Synaptics Incorporated | Driving sensor electrodes for noise measurement |
US9454272B2 (en) * | 2014-05-22 | 2016-09-27 | Stmicroelectronics Asia Pacific Pte Ltd | Touch screen for stylus emitting wireless signals |
US10055045B2 (en) * | 2014-05-31 | 2018-08-21 | Synaptics Incorporated | Current feedback digital charge accumulator |
US9817530B2 (en) * | 2015-08-31 | 2017-11-14 | Stmicroelectronics Asia Pacific Pte. Ltd. | Electronic device with touchscreen for removing sample subsets and related methods |
CN108027678B (zh) | 2015-09-14 | 2021-09-03 | 辛纳普蒂克斯公司 | 用于电容性的触摸感测的连续时间抗混叠滤波器 |
US9971463B2 (en) | 2015-09-29 | 2018-05-15 | Synaptics Incorporated | Row-based sensing on matrix pad sensors |
US10146371B2 (en) * | 2016-03-29 | 2018-12-04 | Microchip Technology Incorporated | Water robustness and detection on capacitive buttons |
US10126900B2 (en) * | 2017-04-04 | 2018-11-13 | Synaptics Incorporated | Reduced capacitive baseline shift using null time periods |
WO2020120541A1 (de) * | 2018-12-12 | 2020-06-18 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Anordnung für ein fahrzeug |
EP3796140B1 (en) * | 2019-09-18 | 2024-05-22 | Semtech Corporation | Proximity sensor with nonlinear filter and method |
WO2021069059A1 (de) * | 2019-10-08 | 2021-04-15 | Diehl Ako Stiftung & Co. Kg | Verfahren zum einstellen einer abtastfrequenz eines kapazitiven berührungsschalters |
IT202000006883A1 (it) * | 2020-04-01 | 2021-10-01 | St Microelectronics Srl | Sistema e metodo di rilevamento di presenza in un ambiente da monitorare |
US11550434B2 (en) * | 2020-10-19 | 2023-01-10 | Synaptics Incorporated | Short-term noise suppression |
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JP4522113B2 (ja) * | 2004-03-11 | 2010-08-11 | キヤノン株式会社 | 座標入力装置 |
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JP5481040B2 (ja) * | 2008-04-11 | 2014-04-23 | 株式会社ジャパンディスプレイ | 表示装置とその駆動方法 |
US9569037B2 (en) | 2008-05-19 | 2017-02-14 | Atmel Corporation | Capacitive sensing with low-frequency noise reduction |
JP4720857B2 (ja) * | 2008-06-18 | 2011-07-13 | ソニー株式会社 | 静電容量型入力装置および入力機能付き表示装置 |
US8605037B2 (en) * | 2008-10-21 | 2013-12-10 | Atmel Corporation | Noise reduction in capacitive touch sensors |
US8031094B2 (en) * | 2009-09-11 | 2011-10-04 | Apple Inc. | Touch controller with improved analog front end |
-
2009
- 2009-05-14 US US12/466,230 patent/US8378981B2/en active Active
- 2009-05-19 TW TW098116590A patent/TW200951456A/zh unknown
- 2009-05-19 CN CN200910203417A patent/CN101644973A/zh active Pending
-
2013
- 2013-02-18 US US13/769,743 patent/US20130257795A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI420117B (zh) * | 2010-02-11 | 2013-12-21 | Novatek Microelectronics Corp | 電容感測裝置及觸控感測系統 |
Also Published As
Publication number | Publication date |
---|---|
US20130257795A1 (en) | 2013-10-03 |
CN101644973A (zh) | 2010-02-10 |
US20090303198A1 (en) | 2009-12-10 |
US8378981B2 (en) | 2013-02-19 |
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