TWI640911B - 在電容感測中未接地導電物體之類比消除 - Google Patents

在電容感測中未接地導電物體之類比消除 Download PDF

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Publication number
TWI640911B
TWI640911B TW104103464A TW104103464A TWI640911B TW I640911 B TWI640911 B TW I640911B TW 104103464 A TW104103464 A TW 104103464A TW 104103464 A TW104103464 A TW 104103464A TW I640911 B TWI640911 B TW I640911B
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TW
Taiwan
Prior art keywords
capacitance
measurement
self
capacitor
microcontroller
Prior art date
Application number
TW104103464A
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English (en)
Chinese (zh)
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TW201616326A (zh
Inventor
布兒克 大衛森
高翔
言恩 萊佛
Original Assignee
美商微晶片科技公司
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Publication of TW201616326A publication Critical patent/TW201616326A/zh
Application granted granted Critical
Publication of TWI640911B publication Critical patent/TWI640911B/zh

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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
    • 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
    • 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 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)
TW104103464A 2014-10-24 2015-02-02 在電容感測中未接地導電物體之類比消除 TWI640911B (zh)

Applications Claiming Priority (4)

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

Publications (2)

Publication Number Publication Date
TW201616326A TW201616326A (zh) 2016-05-01
TWI640911B true TWI640911B (zh) 2018-11-11

Family

ID=52472596

Family Applications (2)

Application Number Title Priority Date Filing Date
TW104103464A TWI640911B (zh) 2014-10-24 2015-02-02 在電容感測中未接地導電物體之類比消除
TW107134083A TWI681327B (zh) 2014-10-24 2015-02-02 在電容感測中未接地導電物體之類比消除

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW107134083A TWI681327B (zh) 2014-10-24 2015-02-02 在電容感測中未接地導電物體之類比消除

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)

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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
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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
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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
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Also Published As

Publication number Publication date
US20160117014A1 (en) 2016-04-28
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
JP6606175B2 (ja) 2019-11-13
JP2018502464A (ja) 2018-01-25
EP3331165A1 (en) 2018-06-06
EP3210305B1 (en) 2019-08-07
CN106716839A (zh) 2017-05-24

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