DE2746655C2 - - Google Patents

Info

Publication number
DE2746655C2
DE2746655C2 DE19772746655 DE2746655A DE2746655C2 DE 2746655 C2 DE2746655 C2 DE 2746655C2 DE 19772746655 DE19772746655 DE 19772746655 DE 2746655 A DE2746655 A DE 2746655A DE 2746655 C2 DE2746655 C2 DE 2746655C2
Authority
DE
Germany
Prior art keywords
areas
conductive
regions
plate
plunger
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
Application number
DE19772746655
Other languages
German (de)
English (en)
Other versions
DE2746655A1 (de
Inventor
Douglas Guildford Surrey Gb Craig-Wood
Ian Robert Woking Surrey Gb Prince
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.)
ALPHAMERIC KEYBOARDS Ltd OLD WOKING SURREY GB
Original Assignee
ALPHAMERIC KEYBOARDS Ltd OLD WOKING SURREY GB
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 ALPHAMERIC KEYBOARDS Ltd OLD WOKING SURREY GB filed Critical ALPHAMERIC KEYBOARDS Ltd OLD WOKING SURREY GB
Publication of DE2746655A1 publication Critical patent/DE2746655A1/de
Application granted granted Critical
Publication of DE2746655C2 publication Critical patent/DE2746655C2/de
Granted legal-status Critical Current

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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, 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
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
DE19772746655 1976-10-18 1977-10-17 Tastatur Granted DE2746655A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4317776A GB1582640A (en) 1976-10-18 1976-10-18 Keyboards for electronic circuits

Publications (2)

Publication Number Publication Date
DE2746655A1 DE2746655A1 (de) 1978-04-27
DE2746655C2 true DE2746655C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-05-18

Family

ID=10427648

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772746655 Granted DE2746655A1 (de) 1976-10-18 1977-10-17 Tastatur

Country Status (2)

Country Link
DE (1) DE2746655A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1582640A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005620A1 (de) * 2000-02-09 2001-08-30 Infineon Technologies Ag Schaltungsanordnung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400758A (en) * 1981-06-29 1983-08-23 W. H. Brady Co. Capacitance switch arrangement
FR2503494A1 (fr) * 1981-04-03 1982-10-08 Commissariat Energie Atomique Structure antiparasite pour clavier capacitif
US4543564A (en) * 1981-04-03 1985-09-24 Commissariat A L'energie Atomique Interference suppression apparatus for a capacitive keyboard
US4359720A (en) * 1981-04-29 1982-11-16 Honeywell Inc. Environmentally sealed variable capacitance apparatus
FR2520954B1 (fr) * 1982-01-29 1985-11-29 Commissariat Energie Atomique Structure de clavier capacitif
FR2522918A1 (fr) * 1982-03-03 1983-09-09 Lewiner Jacques Perfectionnements aux claviers capacitifs
GB2145877B (en) * 1983-08-26 1987-10-14 Jacques Lewiner Improvements to capacitive keyboards
GB2394775B (en) * 2002-10-31 2006-12-20 Hm Technology Internat Ltd Mechanically operable electrical device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443174A (en) * 1973-04-06 1976-07-21 Alphameric Keyboards Ltd Keyboards for electronic circuits
US3921167A (en) * 1974-06-14 1975-11-18 Ibm Capacitive circuitboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005620A1 (de) * 2000-02-09 2001-08-30 Infineon Technologies Ag Schaltungsanordnung

Also Published As

Publication number Publication date
DE2746655A1 (de) 1978-04-27
GB1582640A (en) 1981-01-14

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: H03K 17/975

8125 Change of the main classification

Ipc: H03K 17/98

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee