WO2008001220A3 - Capacitive position sensor - Google Patents

Capacitive position sensor Download PDF

Info

Publication number
WO2008001220A3
WO2008001220A3 PCT/IB2007/002774 IB2007002774W WO2008001220A3 WO 2008001220 A3 WO2008001220 A3 WO 2008001220A3 IB 2007002774 W IB2007002774 W IB 2007002774W WO 2008001220 A3 WO2008001220 A3 WO 2008001220A3
Authority
WO
WIPO (PCT)
Prior art keywords
touch
sensing
position sensor
succession
detects
Prior art date
Application number
PCT/IB2007/002774
Other languages
French (fr)
Other versions
WO2008001220A2 (en
Inventor
Harald Philipp
Original Assignee
Harald Philipp
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
Priority claimed from GB0612200A external-priority patent/GB0612200D0/en
Application filed by Harald Philipp filed Critical Harald Philipp
Priority to DE112007001486T priority Critical patent/DE112007001486B4/en
Priority to CN200780022934.3A priority patent/CN101553711B/en
Publication of WO2008001220A2 publication Critical patent/WO2008001220A2/en
Publication of WO2008001220A3 publication Critical patent/WO2008001220A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • 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
    • 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
    • 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

Abstract

A capacitive position sensor comprising a preferably annular sensing path, the sensing path having one or more virtual buttons designated along its length. The sensing path has a plurality of terminals connected to it to subdivide it into a plurality of sections, each terminal providing a sensing channel for a signal indicative of capacitance. The sensing channels provide the signals to a processor, preferably a microcontroller, that is operable to distinguish between a user making a touch to actuate one of the virtual buttons, and a touch to perform a scrolling function. To be determined as a scroll, it is required that there is a succession of detects which span over at least a threshold distance, for example an angular or linear distance. To be determined as a touch, it is required that there is a succession of detects that all lie within one of the pre-assigned virtual button positions.
PCT/IB2007/002774 2006-06-20 2007-06-19 Capacitive position sensor WO2008001220A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112007001486T DE112007001486B4 (en) 2006-06-20 2007-06-19 Capacitive position sensor
CN200780022934.3A CN101553711B (en) 2006-06-20 2007-06-19 Capacitive position sensor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US80524906P 2006-06-20 2006-06-20
GB0612200.6 2006-06-20
GB0612200A GB0612200D0 (en) 2006-06-20 2006-06-20 Capacitive position sensor
US60/805,249 2006-06-20

Publications (2)

Publication Number Publication Date
WO2008001220A2 WO2008001220A2 (en) 2008-01-03
WO2008001220A3 true WO2008001220A3 (en) 2008-04-03

Family

ID=38779759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002774 WO2008001220A2 (en) 2006-06-20 2007-06-19 Capacitive position sensor

Country Status (3)

Country Link
KR (1) KR20090057360A (en)
DE (1) DE112007001486B4 (en)
WO (1) WO2008001220A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101539832A (en) * 2008-03-20 2009-09-23 达方电子股份有限公司 Input device with function of a scroll bar, touch control panel thereof and electronic device
KR101067198B1 (en) * 2009-09-25 2011-09-22 삼성전기주식회사 Biometric authentication method
US9243390B2 (en) 2013-03-14 2016-01-26 Delta Faucet Company Capacitive sensing faucet including a conductive polymer
US8823399B1 (en) * 2013-10-07 2014-09-02 Cypress Semiconductor Corporation Detect and differentiate touches from different size conductive objects on a capacitive button
DE102014018054A1 (en) * 2014-12-05 2016-06-09 Audi Ag Method for operating a virtual reality glasses and display device
US11243642B2 (en) * 2018-09-25 2022-02-08 Sanko Tekstil Isletmeleri San. Ve Tic. A.S. Capacitive touch sensor
JP2020173792A (en) * 2019-03-22 2020-10-22 サンコ テキスタイル イスレットメレリ サン ベ ティク エーエスＳａｎｋｏ Ｔｅｋｓｔｉｌ Ｉｓｌｅｔｍｅｌｅｒｉ Ｓａｎ． Ｖｅ Ｔｉｃ． Ａ．Ｓ． Capacitive touch sensor
CN111984950B (en) * 2020-08-26 2022-10-18 歌尔科技有限公司 Unlocking prompting method and system for unmanned aerial vehicle remote controller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6028271A (en) * 1992-06-08 2000-02-22 Synaptics, Inc. Object position detector with edge motion feature and gesture recognition
US20030076306A1 (en) * 2001-10-22 2003-04-24 Zadesky Stephen Paul Touch pad handheld device
US20040178997A1 (en) * 1992-06-08 2004-09-16 Synaptics, Inc., A California Corporation Object position detector with edge motion feature and gesture recognition
EP1505484A1 (en) * 2002-05-16 2005-02-09 Sony Corporation Inputting method and inputting apparatus
WO2006017477A2 (en) * 2004-08-04 2006-02-16 Interlink Electronics, Inc. Multifunctional scroll sensor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US472245A (en) 1892-04-05 Alfred j
US4158216A (en) 1978-02-21 1979-06-12 General Electric Company Capacitive touch control
US4264903A (en) 1978-06-12 1981-04-28 General Electric Company Capacitive touch control and display
GB9409737D0 (en) 1994-05-16 1994-07-06 Penny & Giles Studio Equip Improvements relating to variable voltage controllers
US6288707B1 (en) 1996-07-29 2001-09-11 Harald Philipp Capacitive position sensor
US6466036B1 (en) 1998-11-25 2002-10-15 Harald Philipp Charge transfer capacitance measurement circuit
JP4275865B2 (en) 1999-01-26 2009-06-10 キューアールジー リミテッド Capacitive sensors and arrays
US7466307B2 (en) 2002-04-11 2008-12-16 Synaptics Incorporated Closed-loop sensor on a solid-state object position detector
DE60301831T2 (en) 2002-07-12 2006-08-10 Philipp, Harald, Southampton Capacitive keyboard with reduced ambiguity in input
AU2003301707A1 (en) 2002-10-31 2004-05-25 Harald Philipp Charge transfer capacitive position sensor
GB2418493B (en) 2003-08-21 2006-11-15 Harald Philipp Capacitive position sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6028271A (en) * 1992-06-08 2000-02-22 Synaptics, Inc. Object position detector with edge motion feature and gesture recognition
US20040178997A1 (en) * 1992-06-08 2004-09-16 Synaptics, Inc., A California Corporation Object position detector with edge motion feature and gesture recognition
US20030076306A1 (en) * 2001-10-22 2003-04-24 Zadesky Stephen Paul Touch pad handheld device
EP1505484A1 (en) * 2002-05-16 2005-02-09 Sony Corporation Inputting method and inputting apparatus
WO2006017477A2 (en) * 2004-08-04 2006-02-16 Interlink Electronics, Inc. Multifunctional scroll sensor

Also Published As

Publication number Publication date
KR20090057360A (en) 2009-06-05
WO2008001220A2 (en) 2008-01-03
DE112007001486T5 (en) 2009-05-07
DE112007001486B4 (en) 2011-02-17

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