JPS5156128A - - Google Patents

Info

Publication number
JPS5156128A
JPS5156128A JP50113095A JP11309575A JPS5156128A JP S5156128 A JPS5156128 A JP S5156128A JP 50113095 A JP50113095 A JP 50113095A JP 11309575 A JP11309575 A JP 11309575A JP S5156128 A JPS5156128 A JP S5156128A
Authority
JP
Japan
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.)
Pending
Application number
JP50113095A
Inventor
Bobio Mikere
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of JPS5156128A publication Critical patent/JPS5156128A/ja
Pending 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/04—Return force magnetic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/006—Containing a capacitive switch or usable as such

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
  • Electrophonic Musical Instruments (AREA)
JP50113095A 1974-09-18 1975-09-18 Pending JPS5156128A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69815/74A IT1020822B (it) 1974-09-18 1974-09-18 Tastiera elettronica

Publications (1)

Publication Number Publication Date
JPS5156128A true JPS5156128A (ja) 1976-05-17

Family

ID=11312896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50113095A Pending JPS5156128A (ja) 1974-09-18 1975-09-18

Country Status (3)

Country Link
US (1) US3968488A (ja)
JP (1) JPS5156128A (ja)
IT (1) IT1020822B (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209819A (en) * 1978-03-13 1980-06-24 Key Tronic Corporation Capacitive keyswitch
US4234871A (en) * 1978-06-06 1980-11-18 Ing. C. Olivetti & C., S.P.A. Capacitive keyboard for data processing equipments
US4417294A (en) * 1981-08-28 1983-11-22 Illinois Tool Works Inc. Capacitive keyswitch
US5579238A (en) * 1994-10-21 1996-11-26 Krugman; Michael Instrumented computer keyboard for prevention of injury
CH700989A1 (de) 2009-04-07 2010-10-15 Polycontact Ag Elektrisches Schaltelement.
CN111694440A (zh) * 2019-03-13 2020-09-22 密克罗奇普技术公司 用于安全数据输入的键盘

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710209A (en) * 1971-08-13 1973-01-09 Colorado Instr Inc Variable capacitor

Also Published As

Publication number Publication date
US3968488A (en) 1976-07-06
IT1020822B (it) 1977-12-30

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