WO2000042628A8 - Touch switch with integral control circuit - Google Patents

Touch switch with integral control circuit

Info

Publication number
WO2000042628A8
WO2000042628A8 PCT/US2000/001258 US0001258W WO0042628A8 WO 2000042628 A8 WO2000042628 A8 WO 2000042628A8 US 0001258 W US0001258 W US 0001258W WO 0042628 A8 WO0042628 A8 WO 0042628A8
Authority
WO
WIPO (PCT)
Prior art keywords
control circuit
touch pad
electrode
touch switch
electric field
Prior art date
Application number
PCT/US2000/001258
Other languages
French (fr)
Other versions
WO2000042628A1 (en
Inventor
David W Caldwell
Original Assignee
Touchsensor Tech Llc
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 Touchsensor Tech Llc filed Critical Touchsensor Tech Llc
Priority to NZ513570A priority Critical patent/NZ513570A/en
Priority to AU25109/00A priority patent/AU768047B2/en
Priority to EP00903348A priority patent/EP1153403B1/en
Priority to JP2000594130A priority patent/JP4863549B2/en
Priority to DE60036083T priority patent/DE60036083T2/en
Priority to CA002359364A priority patent/CA2359364C/en
Publication of WO2000042628A1 publication Critical patent/WO2000042628A1/en
Publication of WO2000042628A8 publication Critical patent/WO2000042628A8/en
Priority to HK02106480A priority patent/HK1044850A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • H03K2217/96077—Constructional details of capacitive touch and proximity switches comprising an electrode which is floating

Abstract

A touch switch apparatus (20) for detecting the presence of an object such as a human appendage, the apparatus having a touch pad (22) and a local control circuit (26) connected to the touch pad and to a control device. The touch pad preferable includes a first electrode (E1) and a second electrode (E2) spaced from and surrounding the first electrode. The control circuit (26) is preferably in integrated circuit form. A signal is provided to the touch pad (22) to generate an electric field thereabout. Introduction of a stimulus near the touch pad (22) disturbs the electric field. The control circuit detects the electric field disturbance in and generates a control signal in response.
PCT/US2000/001258 1999-01-19 2000-01-18 Touch switch with integral control circuit WO2000042628A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NZ513570A NZ513570A (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit
AU25109/00A AU768047B2 (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit
EP00903348A EP1153403B1 (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit
JP2000594130A JP4863549B2 (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit
DE60036083T DE60036083T2 (en) 1999-01-19 2000-01-18 TOUCH SWITCH WITH INTEGRATED CONTROL CHECK
CA002359364A CA2359364C (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit
HK02106480A HK1044850A1 (en) 1999-01-19 2002-09-03 Touch switch with integral control circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/234,150 1999-01-19
US09/234,150 US6320282B1 (en) 1999-01-19 1999-01-19 Touch switch with integral control circuit

Publications (2)

Publication Number Publication Date
WO2000042628A1 WO2000042628A1 (en) 2000-07-20
WO2000042628A8 true WO2000042628A8 (en) 2000-10-26

Family

ID=22880159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/001258 WO2000042628A1 (en) 1999-01-19 2000-01-18 Touch switch with integral control circuit

Country Status (11)

Country Link
US (3) US6320282B1 (en)
EP (1) EP1153403B1 (en)
JP (2) JP4863549B2 (en)
CN (1) CN1278348C (en)
AT (1) ATE371255T1 (en)
AU (1) AU768047B2 (en)
CA (1) CA2359364C (en)
DE (1) DE60036083T2 (en)
HK (1) HK1044850A1 (en)
NZ (1) NZ513570A (en)
WO (1) WO2000042628A1 (en)

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US6713897B2 (en) 2004-03-30
AU2510900A (en) 2000-08-01
ATE371255T1 (en) 2007-09-15
CA2359364A1 (en) 2000-07-20
EP1153403B1 (en) 2007-08-22
US6320282B1 (en) 2001-11-20
DE60036083D1 (en) 2007-10-04
NZ513570A (en) 2003-09-26
JP2012027935A (en) 2012-02-09
CN1341268A (en) 2002-03-20
EP1153403A1 (en) 2001-11-14
AU768047B2 (en) 2003-11-27
WO2000042628A1 (en) 2000-07-20
US20020057020A1 (en) 2002-05-16
US20040124714A1 (en) 2004-07-01

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