JP6606175B2 - 容量感知における接地されていない伝導性物体のアナログ排除 - Google Patents

容量感知における接地されていない伝導性物体のアナログ排除 Download PDF

Info

Publication number
JP6606175B2
JP6606175B2 JP2017511905A JP2017511905A JP6606175B2 JP 6606175 B2 JP6606175 B2 JP 6606175B2 JP 2017511905 A JP2017511905 A JP 2017511905A JP 2017511905 A JP2017511905 A JP 2017511905A JP 6606175 B2 JP6606175 B2 JP 6606175B2
Authority
JP
Japan
Prior art keywords
capacitance
measurement
self
microcontroller
capacitor
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.)
Active
Application number
JP2017511905A
Other languages
English (en)
Japanese (ja)
Other versions
JP2018502464A5 (enExample
JP2018502464A (ja
Inventor
バーク ダビソン，
シャン ガオ，
ヤン ルファウ，
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microchip Technology Inc
Original Assignee
Microchip Technology Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Microchip Technology Inc filed Critical Microchip Technology Inc
Publication of JP2018502464A publication Critical patent/JP2018502464A/ja
Publication of JP2018502464A5 publication Critical patent/JP2018502464A5/ja
Application granted granted Critical
Publication of JP6606175B2 publication Critical patent/JP6606175B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/04186—Touch location disambiguation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H03K2017/9606—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using one electrode only per touch switch
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H03K2017/9613—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch
    • 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
    • H03K2217/9401—Calibration techniques
    • H03K2217/94026—Automatic threshold calibration; e.g. threshold automatically adapts to ambient conditions or follows variation of input
    • 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
    • H03K2217/9401—Calibration techniques
    • H03K2217/94031—Calibration involving digital processing
    • 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
    • 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
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/960765—Details of shielding arrangements
    • 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
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/960775—Emitter-receiver or "fringe" type detection, i.e. one or more field emitting electrodes and corresponding one or more receiving electrodes

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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
JP2017511905A 2014-10-24 2015-01-27 容量感知における接地されていない伝導性物体のアナログ排除 Active JP6606175B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201462068450P 2014-10-24 2014-10-24
US62/068,450 2014-10-24
US14/566,183 US9542051B2 (en) 2014-10-24 2014-12-10 Analog elimination of ungrounded conductive objects in capacitive sensing
US14/566,183 2014-12-10
PCT/US2015/013057 WO2016064438A1 (en) 2014-10-24 2015-01-27 Analog elimination of ungrounded conductive objects in capacitive sensing

Publications (3)

Publication Number Publication Date
JP2018502464A JP2018502464A (ja) 2018-01-25
JP2018502464A5 JP2018502464A5 (enExample) 2018-03-08
JP6606175B2 true JP6606175B2 (ja) 2019-11-13

Family

ID=52472596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017511905A Active JP6606175B2 (ja) 2014-10-24 2015-01-27 容量感知における接地されていない伝導性物体のアナログ排除

Country Status (7)

Country Link
US (2) US9542051B2 (enExample)
EP (2) EP3331165B1 (enExample)
JP (1) JP6606175B2 (enExample)
KR (2) KR102325699B1 (enExample)
CN (1) CN106716839B (enExample)
TW (2) TWI640911B (enExample)
WO (1) WO2016064438A1 (enExample)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU92582B1 (en) * 2014-10-22 2016-04-25 Iee Sarl Low-cost complex impedance measurement circuit for guardsense capacitive sensors operated in loading mode
US9542051B2 (en) 2014-10-24 2017-01-10 Microchip Technology Incorporated Analog elimination of ungrounded conductive objects in capacitive sensing
KR102382999B1 (ko) 2015-01-08 2022-04-05 삼성디스플레이 주식회사 터치 센서를 포함하는 표시 장치
TWI543060B (zh) 2015-07-21 2016-07-21 矽創電子股份有限公司 校正方法與電容式感測裝置
US10444892B2 (en) * 2015-10-07 2019-10-15 Microchip Technology Incorporated Capacitance measurement device with reduced noise
KR102726884B1 (ko) * 2016-07-29 2024-11-07 엘에스오토모티브테크놀로지스 주식회사 정전용량 스위치 유니트 및 이의 제어 방법
CN108631762A (zh) * 2017-03-15 2018-10-09 台湾类比科技股份有限公司 用于防水的触控系统
EP3601706A1 (en) * 2017-03-29 2020-02-05 Alps Alpine Co., Ltd. Water rejection on capacitive door handle
CN106992774B (zh) * 2017-04-18 2023-06-02 深圳和家园网络科技有限公司 人体感应传感器电路
US11442586B2 (en) * 2017-05-19 2022-09-13 Microchip Technology Incorporated Canceling unwanted capacitive effects in a capacitive touch measurement, and related systems, methods, and devices
TW201901398A (zh) * 2017-05-19 2019-01-01 美商愛特梅爾公司 用於消除電容式觸控介面中之非所要電容效應的技術，以及相關系統、方法、及裝置
DE102017111253B4 (de) 2017-05-23 2020-10-01 Preh Gmbh Verfahren zur kapazitiven Berühr- und Betätigungsdetektion
US10558306B2 (en) * 2017-06-12 2020-02-11 Himax Technologies Limited In-cell touch apparatus and a water mode detection method thereof
US11075633B2 (en) * 2017-06-13 2021-07-27 Semtech Corporation Water-rejection proximity detector and method
US10146390B1 (en) * 2017-07-21 2018-12-04 Cypress Semiconductor Corporation Method of combining self and mutual capacitance sensing
US10572087B2 (en) * 2017-07-27 2020-02-25 Cirque Corporation Self-capacitence sensor and sensor array sensitivity calibration method using secondary mutual capacitence measurements
JP6392420B1 (ja) * 2017-07-28 2018-09-19 エルエス オートモーティブ テクノロジーズ カンパニー リミテッドLs Automotive Technologies Co., Ltd. 静電容量スイッチユニット及びその製造方法
FR3070706B1 (fr) * 2017-09-05 2019-08-23 Continental Automotive France Dispositif de detection d'intention de verrouillage ou de deverrouillage d'une portiere de vehicule automobile par un utilisateur et poignee de portiere associee
TWI635433B (zh) * 2017-11-22 2018-09-11 矽統科技股份有限公司 觸控偵測電路及方法
CN109814762B (zh) * 2017-11-22 2022-05-03 矽统科技股份有限公司 触控侦测电路及方法
US10545614B2 (en) 2018-01-22 2020-01-28 Cypress Semiconductor Corporation Two-electrode touch button with a multi-phase capacitance measurement process
US10698540B2 (en) 2018-01-22 2020-06-30 Semicondutor Components Industries, Llc Methods and apparatus for a capacitive touch sensor
FR3077449B1 (fr) * 2018-01-29 2021-01-08 Continental Automotive France Procede et dispositif de detection de presence a multiples zones de detection pour vehicule automobile
US10901551B2 (en) * 2018-03-01 2021-01-26 Microchip Technology Incorporated Method and system for touchless gesture detection and hover and touch detection
JP7068890B2 (ja) * 2018-03-30 2022-05-17 株式会社デンソーテン 静電方式の入力装置
CN112721821A (zh) * 2019-10-28 2021-04-30 常州星宇车灯股份有限公司 一种汽车触摸防水尾标
DE102020110172A1 (de) * 2020-04-14 2021-10-14 Preh Gmbh Verfahren zur kapazitiven Berühr- und Betätigungsdetektion
JP7445523B2 (ja) 2020-06-04 2024-03-07 ホシデン株式会社 静電容量センサ
WO2022016359A1 (zh) * 2020-07-21 2022-01-27 深圳市汇顶科技股份有限公司 电容检测电路和触控芯片
FR3123525B1 (fr) * 2021-05-25 2023-04-14 Vitesco Technologies Capteur de proximité capacitif
DE102022104117A1 (de) 2022-02-22 2023-08-24 Valeo Schalter Und Sensoren Gmbh Verfahren zum Bestimmen einer manuellen Betätigung eines kapazitiven Sensorelements, Auswerteeinheit hierfür sowie Sensoreinrichtung
EP4270789A1 (en) * 2022-04-27 2023-11-01 NXP USA, Inc. Capacitive touch sensor
DE102023123972A1 (de) 2023-08-30 2025-03-06 Infineon Technologies Ag Elektronische vorrichtung zum bestimmen eines aktivierungsstatus eines berührungssensors

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8493331B2 (en) * 2007-06-13 2013-07-23 Apple Inc. Touch detection using multiple simultaneous frequencies
US8810542B2 (en) * 2008-09-10 2014-08-19 Apple Inc. Correction of parasitic capacitance effect in touch sensor panels
JP2012503774A (ja) * 2008-09-24 2012-02-09 スリーエム イノベイティブ プロパティズ カンパニー 相互静電容量を測定する回路及び方法
US8427450B2 (en) * 2009-01-12 2013-04-23 Microchip Technology Incorporated Capacitive touch sensing and light emitting diode drive matrix
JP5369888B2 (ja) * 2009-05-19 2013-12-18 トヨタ紡織株式会社 静電容量センサの電極構造及びそれを用いた車両用近接センサ
KR101752015B1 (ko) * 2009-05-29 2017-06-28 쓰리엠 이노베이티브 프로퍼티즈 컴파니 고속 멀티-터치 터치 디바이스 및 그 제어기
US9069405B2 (en) * 2009-07-28 2015-06-30 Cypress Semiconductor Corporation Dynamic mode switching for fast touch response
US8339286B2 (en) * 2010-03-31 2012-12-25 3M Innovative Properties Company Baseline update procedure for touch sensitive device
US8773146B1 (en) * 2010-04-16 2014-07-08 Cypress Semiconductor Corporation Waterproof scanning of a capacitive sense array
US8933907B2 (en) * 2010-04-30 2015-01-13 Microchip Technology Incorporated Capacitive touch system using both self and mutual capacitance
US20120026123A1 (en) * 2010-07-30 2012-02-02 Grunthaner Martin Paul Compensation for Capacitance Change in Touch Sensing Device
US9268441B2 (en) * 2011-04-05 2016-02-23 Parade Technologies, Ltd. Active integrator for a capacitive sense array
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
US9086768B2 (en) * 2012-04-30 2015-07-21 Apple Inc. Mitigation of parasitic capacitance
US9116572B2 (en) * 2013-04-15 2015-08-25 Apple Inc. Disambiguation of touch input events on a touch sensor panel
US8823399B1 (en) * 2013-10-07 2014-09-02 Cypress Semiconductor Corporation Detect and differentiate touches from different size conductive objects on a capacitive button
US9965108B2 (en) * 2014-05-16 2018-05-08 Apple Inc. Simultaneous self- and mutual capacitance sensing
US9542051B2 (en) 2014-10-24 2017-01-10 Microchip Technology Incorporated Analog elimination of ungrounded conductive objects in capacitive sensing

Also Published As

Publication number Publication date
US20160117014A1 (en) 2016-04-28
TWI640911B (zh) 2018-11-11
US10191591B2 (en) 2019-01-29
TW201903591A (zh) 2019-01-16
KR102253923B1 (ko) 2021-05-21
EP3331165B1 (en) 2020-07-29
KR20210040459A (ko) 2021-04-13
WO2016064438A1 (en) 2016-04-28
US9542051B2 (en) 2017-01-10
KR102325699B1 (ko) 2021-11-15
EP3210305A1 (en) 2017-08-30
KR20170072190A (ko) 2017-06-26
CN106716839B (zh) 2021-03-23
US20170139540A1 (en) 2017-05-18
TWI681327B (zh) 2020-01-01
TW201616326A (zh) 2016-05-01
JP2018502464A (ja) 2018-01-25
EP3331165A1 (en) 2018-06-06
EP3210305B1 (en) 2019-08-07
CN106716839A (zh) 2017-05-24

Similar Documents

Publication Publication Date Title
JP6606175B2 (ja) 容量感知における接地されていない伝導性物体のアナログ排除
US11481066B2 (en) Providing a baseline capacitance for a capacitance sensing channel
US8866500B2 (en) Multi-functional capacitance sensing circuit with a current conveyor
US10790822B2 (en) Switching arrangement and method for a capacitive sensor
US9218096B2 (en) Sensing methods for touch sensing devices
US20120182252A1 (en) Differential Capacitive Touchscreen or Touch Panel
US9310953B1 (en) Full-wave synchronous rectification for self-capacitance sensing
US11650696B2 (en) Noise detection circuit, self-capacitance detection method, touch chip, and electronic device
KR20150130963A (ko) 셀프-정전용량 감지 디바이스를 사용한 상호 정전용량 감지
TW201248475A (en) Capacitance sensing devices and control methods
TW201312126A (zh) 量測電壓
US20170293376A1 (en) Hover sensor
KR20130072537A (ko) 터치신호 처리회로 및 상기 터치신호 처리회로를 구비하는 터치신호 감지시스템
CN110050253B (zh) 传感器阵列的多阶段自电容扫描

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20180122

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180122

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20181212

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190129

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190920

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20191017

R150 Certificate of patent or registration of utility model

Ref document number: 6606175

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250