DE3673449D1 - Identifizierungsvorrichtung fuer kapazitive tastaturen. - Google Patents

Identifizierungsvorrichtung fuer kapazitive tastaturen.

Info

Publication number
DE3673449D1
DE3673449D1 DE8686400951T DE3673449T DE3673449D1 DE 3673449 D1 DE3673449 D1 DE 3673449D1 DE 8686400951 T DE8686400951 T DE 8686400951T DE 3673449 T DE3673449 T DE 3673449T DE 3673449 D1 DE3673449 D1 DE 3673449D1
Authority
DE
Germany
Prior art keywords
identification device
capacitive keyboards
keyboards
capacitive
identification
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 - Lifetime
Application number
DE8686400951T
Other languages
English (en)
Inventor
Jacques Lewiner
Claude Hennion
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
Application granted granted Critical
Publication of DE3673449D1 publication Critical patent/DE3673449D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/02—Details
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electronic Switches (AREA)
DE8686400951T 1985-05-02 1986-04-30 Identifizierungsvorrichtung fuer kapazitive tastaturen. Expired - Lifetime DE3673449D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8506666A FR2581491A1 (fr) 1985-05-02 1985-05-02 Perfectionnements aux ensembles electroniques d'identification des claviers capacitifs

Publications (1)

Publication Number Publication Date
DE3673449D1 true DE3673449D1 (de) 1990-09-20

Family

ID=9318886

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686400951T Expired - Lifetime DE3673449D1 (de) 1985-05-02 1986-04-30 Identifizierungsvorrichtung fuer kapazitive tastaturen.

Country Status (5)

Country Link
US (1) US4737768A (de)
EP (1) EP0202155B1 (de)
JP (1) JPS61255123A (de)
DE (1) DE3673449D1 (de)
FR (1) FR2581491A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0648903Y2 (ja) * 1986-11-14 1994-12-12 ブラザー工業株式会社 コンデンサキーボード用印刷回路基板
JPH0628020B2 (ja) * 1988-01-22 1994-04-13 株式会社東芝 キー入力装置
US5036321A (en) * 1989-08-31 1991-07-30 Otis Elevator Company Capacitive sensing, solid state touch button system
US5586174A (en) * 1990-08-15 1996-12-17 Advanced Laundry Devices, Inc. Condition responsive indicating system for interactively indicating status of a plurality of electrical appliances
US5225959A (en) * 1991-10-15 1993-07-06 Xerox Corporation Capacitive tactile sensor array and method for sensing pressure with the array
US5463388A (en) * 1993-01-29 1995-10-31 At&T Ipm Corp. Computer mouse or keyboard input device utilizing capacitive sensors
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
US8059015B2 (en) 2006-05-25 2011-11-15 Cypress Semiconductor Corporation Capacitance sensing matrix for keyboard architecture
US8040321B2 (en) * 2006-07-10 2011-10-18 Cypress Semiconductor Corporation Touch-sensor with shared capacitive sensors
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
US8258986B2 (en) 2007-07-03 2012-09-04 Cypress Semiconductor Corporation Capacitive-matrix keyboard with multiple touch detection
JP2011170616A (ja) * 2010-02-18 2011-09-01 On Semiconductor Trading Ltd 静電容量型タッチセンサ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US904008A (en) * 1908-02-17 1908-11-17 Fred Santware Wrench.
US4145748A (en) * 1977-12-23 1979-03-20 General Electric Company Self-optimizing touch pad sensor circuit
US4405918A (en) * 1980-03-03 1983-09-20 Texas Instruments Incorporated Current sensing of capacitive keyboard arrays
DE3273873D1 (en) * 1981-04-03 1986-11-20 Commissariat Energie Atomique Capacitive keyboard with anti-parasite structure
US4405917A (en) * 1981-04-28 1983-09-20 Honeywell Inc. Matrix screening and grounding arrangement and method
US4481587A (en) * 1981-12-24 1984-11-06 Pitney Bowes Inc. Apparatus for providing interchangeable keyboard functions
GB8409877D0 (en) * 1984-04-17 1984-05-31 Binstead Ronald Peter Capacitance effect keyboard

Also Published As

Publication number Publication date
JPS61255123A (ja) 1986-11-12
FR2581491A1 (fr) 1986-11-07
US4737768A (en) 1988-04-12
EP0202155B1 (de) 1990-08-16
EP0202155A1 (de) 1986-11-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee