GB2431246B - Linear capacitance measurement and touchless switch - Google Patents

Linear capacitance measurement and touchless switch

Info

Publication number
GB2431246B
GB2431246B GB0701267A GB0701267A GB2431246B GB 2431246 B GB2431246 B GB 2431246B GB 0701267 A GB0701267 A GB 0701267A GB 0701267 A GB0701267 A GB 0701267A GB 2431246 B GB2431246 B GB 2431246B
Authority
GB
United Kingdom
Prior art keywords
capacitance measurement
linear capacitance
touchless switch
touchless
switch
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.)
Expired - Fee Related
Application number
GB0701267A
Other languages
English (en)
Other versions
GB0701267D0 (en
GB2431246A (en
Inventor
Ying Lau Lee
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0817444A priority Critical patent/GB2451765B8/en
Publication of GB0701267D0 publication Critical patent/GB0701267D0/en
Publication of GB2431246A publication Critical patent/GB2431246A/en
Application granted granted Critical
Publication of GB2431246B publication Critical patent/GB2431246B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • 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
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45138—Two or more differential amplifiers in IC-block form are combined, e.g. measuring amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45548—Indexing scheme relating to differential amplifiers the IC comprising one or more capacitors as shunts to earth or as short circuit between inputs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45594—Indexing scheme relating to differential amplifiers the IC comprising one or more resistors, which are not biasing resistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Amplifiers (AREA)
GB0701267A 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch Expired - Fee Related GB2431246B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0817444A GB2451765B8 (en) 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US60161004P 2004-08-16 2004-08-16
US61969704P 2004-10-19 2004-10-19
US66237805P 2005-03-17 2005-03-17
US69048605P 2005-06-15 2005-06-15
PCT/CN2005/001277 WO2006017988A1 (en) 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch

Publications (3)

Publication Number Publication Date
GB0701267D0 GB0701267D0 (en) 2007-02-28
GB2431246A GB2431246A (en) 2007-04-18
GB2431246B true GB2431246B (en) 2009-01-14

Family

ID=35907231

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0701267A Expired - Fee Related GB2431246B (en) 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch
GB0817444A Expired - Fee Related GB2451765B8 (en) 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0817444A Expired - Fee Related GB2451765B8 (en) 2004-08-16 2005-08-16 Linear capacitance measurement and touchless switch

Country Status (6)

Country Link
US (1) US7323886B2 (enExample)
JP (1) JP4850835B2 (enExample)
CA (2) CA2658709C (enExample)
DE (1) DE112005001697T5 (enExample)
GB (2) GB2431246B (enExample)
WO (1) WO2006017988A1 (enExample)

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DE102005041112A1 (de) * 2005-08-30 2007-03-01 BSH Bosch und Siemens Hausgeräte GmbH Kapazitiver Annäherungsschalter und Haushaltgerät mit einem solchen
ATE400925T1 (de) * 2005-08-31 2008-07-15 Electrolux Home Prod Corp Durch berührung steuerbare kapazitive schalteinrichtung
TWI300529B (en) * 2005-10-05 2008-09-01 Holtek Semiconductor Inc Proximaty sensing device and sensing method thereof
KR100649890B1 (ko) * 2006-03-27 2006-11-28 주식회사 루트로닉 접촉 센서를 이용한 레이저 빔 컨트롤 장치 및 컨트롤 방법
US8144125B2 (en) 2006-03-30 2012-03-27 Cypress Semiconductor Corporation Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device
US8040142B1 (en) * 2006-03-31 2011-10-18 Cypress Semiconductor Corporation Touch detection techniques for capacitive touch sense systems
US8004497B2 (en) 2006-05-18 2011-08-23 Cypress Semiconductor Corporation Two-pin buttons
JP5045023B2 (ja) * 2006-08-09 2012-10-10 パナソニック株式会社 入力装置
JP4444933B2 (ja) * 2006-08-29 2010-03-31 小島プレス工業株式会社 照明装置のタッチスイッチ
JP4929937B2 (ja) * 2006-09-08 2012-05-09 アイシン精機株式会社 静電容量検出装置
US8547114B2 (en) 2006-11-14 2013-10-01 Cypress Semiconductor Corporation Capacitance to code converter with sigma-delta modulator
US7501836B2 (en) * 2006-11-14 2009-03-10 Avago Technologies Enterprise IP (Singapore) Pte. Ltd. Apparatus and method for determining capacitance variation in an integrated circuit
US8089288B1 (en) * 2006-11-16 2012-01-03 Cypress Semiconductor Corporation Charge accumulation capacitance sensor with linear transfer characteristic
JP4302728B2 (ja) * 2006-12-06 2009-07-29 小島プレス工業株式会社 車両アクセサリ用タッチスイッチ
US8058937B2 (en) 2007-01-30 2011-11-15 Cypress Semiconductor Corporation Setting a discharge rate and a charge rate of a relaxation oscillator circuit
US8144126B2 (en) 2007-05-07 2012-03-27 Cypress Semiconductor Corporation Reducing sleep current in a capacitance sensing system
US9500686B1 (en) 2007-06-29 2016-11-22 Cypress Semiconductor Corporation Capacitance measurement system and methods
US8570053B1 (en) 2007-07-03 2013-10-29 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
US8169238B1 (en) 2007-07-03 2012-05-01 Cypress Semiconductor Corporation Capacitance to frequency converter
US8089289B1 (en) 2007-07-03 2012-01-03 Cypress Semiconductor Corporation Capacitive field sensor with sigma-delta modulator
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WO2009058745A2 (en) 2007-10-28 2009-05-07 Synaptics Incorporated Determining actuation of multi-sensor electrode capacitive buttons
US8525798B2 (en) 2008-01-28 2013-09-03 Cypress Semiconductor Corporation Touch sensing
US8358142B2 (en) 2008-02-27 2013-01-22 Cypress Semiconductor Corporation Methods and circuits for measuring mutual and self capacitance
US8319505B1 (en) 2008-10-24 2012-11-27 Cypress Semiconductor Corporation Methods and circuits for measuring mutual and self capacitance
US9104273B1 (en) 2008-02-29 2015-08-11 Cypress Semiconductor Corporation Multi-touch sensing method
US8321174B1 (en) 2008-09-26 2012-11-27 Cypress Semiconductor Corporation System and method to measure capacitance of capacitive sensor array
JP2010105588A (ja) * 2008-10-31 2010-05-13 Kojima Press Industry Co Ltd 車室内照明装置用の照明レンズ
RU2472106C2 (ru) * 2008-12-23 2013-01-10 Закрытое акционерное общество "Нанотехнология-МДТ" Емкостной датчик для измерения линейных перемещений
JP5655223B2 (ja) 2009-01-30 2015-01-21 株式会社フジクラ 乗員姿勢検知装置
ES2655729T3 (es) * 2010-02-10 2018-02-21 Microchip Technology Germany Gmbh Sistema y procedimiento de generación de una señal correlacionada con una operación de entrada manual
JP5502597B2 (ja) * 2010-05-24 2014-05-28 ルネサスエレクトロニクス株式会社 インピーダンス検出回路およびインピーダンス検出方法
JP5712558B2 (ja) * 2010-10-27 2015-05-07 セイコーエプソン株式会社 信号レベル変換回路、物理量検出装置及び電子機器
CN102006048B (zh) * 2010-12-24 2013-03-27 江苏惠通集团有限责任公司 按键侦测板
TW201232375A (en) * 2011-01-31 2012-08-01 xiang-yu Li Measuring device for micro impedance variation
TWI490456B (zh) 2011-04-29 2015-07-01 Elan Microelectronics Corp Differential Capacitance Sensing Circuit and Method
CN102364879A (zh) * 2011-06-23 2012-02-29 苏州瀚瑞微电子有限公司 电容式触摸按键的电路结构
JP2015194813A (ja) * 2014-03-31 2015-11-05 Smk株式会社 静電容量式タッチパネル
US9304643B2 (en) 2014-06-24 2016-04-05 Synaptics Incorporated Classifying input objects interacting with a capacitive button
US10088963B2 (en) 2015-10-26 2018-10-02 Semiconductor Components Industries, Llc Methods and apparatus for a capacitive sensor
US11291252B2 (en) * 2015-12-18 2022-04-05 Rai Strategic Holdings, Inc. Proximity sensing for an aerosol delivery device
IT201600103234A1 (it) 2016-10-14 2018-04-14 Green Seas Ventures Ldt Sistema Costruttivo afferente un sensore capacitivo di tensione
EP3561527B1 (en) * 2016-12-21 2022-08-10 Alps Alpine Co., Ltd. Capacitance detection device and input device
IT201800004114A1 (it) * 2018-03-30 2019-09-30 Green Seas Ventures Ltd C/O Citco B V I Ltd Sistema costruttivo afferente un sensore capacitivo di tensione
JP7155653B2 (ja) 2018-06-22 2022-10-19 コニカミノルタ株式会社 駆動装置、画像形成装置、および制御プログラム
CN119986166A (zh) 2018-12-17 2025-05-13 G&W电气公司 电传感器组合件
BR112021011522A2 (pt) 2018-12-17 2021-08-31 G & W Electric Company Conjunto de sensores elétricos

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Publication number Priority date Publication date Assignee Title
GB2167195A (en) * 1984-11-12 1986-05-21 Sgs Microelettronica Spa Buffer circuit with differential structure for measurement of capacitive charges
US4871976A (en) * 1987-05-27 1989-10-03 Mitsubishi Denki Kabushiki Kaisha Amplifier circuit including single capacitor for DC differential-input balance
JPH09280806A (ja) * 1996-04-09 1997-10-31 Nissan Motor Co Ltd 静電容量式変位計
US5757196A (en) * 1995-09-28 1998-05-26 Endress + Hauser Gmbh + Co. Capacitive switch actuated by changes in a sensor capacitance
JPH1167030A (ja) * 1997-08-08 1999-03-09 Tietech Co Ltd タッチレススイッチ
US5986497A (en) * 1997-05-16 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Interface circuit for capacitive sensor
EP1083409A2 (de) * 1999-09-11 2001-03-14 Bayerische Motoren Werke Aktiengesellschaft Kapazitiver Intrusionssensor und Sensorsystem mit einem solchen Sensor

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Publication number Priority date Publication date Assignee Title
GB2167195A (en) * 1984-11-12 1986-05-21 Sgs Microelettronica Spa Buffer circuit with differential structure for measurement of capacitive charges
US4871976A (en) * 1987-05-27 1989-10-03 Mitsubishi Denki Kabushiki Kaisha Amplifier circuit including single capacitor for DC differential-input balance
US5757196A (en) * 1995-09-28 1998-05-26 Endress + Hauser Gmbh + Co. Capacitive switch actuated by changes in a sensor capacitance
JPH09280806A (ja) * 1996-04-09 1997-10-31 Nissan Motor Co Ltd 静電容量式変位計
US5986497A (en) * 1997-05-16 1999-11-16 Mitsubishi Denki Kabushiki Kaisha Interface circuit for capacitive sensor
JPH1167030A (ja) * 1997-08-08 1999-03-09 Tietech Co Ltd タッチレススイッチ
EP1083409A2 (de) * 1999-09-11 2001-03-14 Bayerische Motoren Werke Aktiengesellschaft Kapazitiver Intrusionssensor und Sensorsystem mit einem solchen Sensor

Also Published As

Publication number Publication date
CA2658709A1 (en) 2006-02-23
JP2008510396A (ja) 2008-04-03
CA2658709C (en) 2013-06-25
DE112005001697T5 (de) 2008-07-24
CA2575648A1 (en) 2006-02-23
JP4850835B2 (ja) 2012-01-11
GB0701267D0 (en) 2007-02-28
GB0817444D0 (en) 2008-10-29
HK1102314A1 (zh) 2007-11-16
GB2431246A (en) 2007-04-18
GB2451765A8 (en) 2009-02-11
GB2451765B (en) 2009-05-06
GB2451765A (en) 2009-02-11
US20060033508A1 (en) 2006-02-16
US7323886B2 (en) 2008-01-29
CA2575648C (en) 2010-09-28
WO2006017988A1 (en) 2006-02-23
GB2451765B8 (en) 2009-05-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140816