CA956238A - High speed serial scan and read-out of keyboards - Google Patents

High speed serial scan and read-out of keyboards

Info

Publication number
CA956238A
CA956238A CA135,825A CA135825A CA956238A CA 956238 A CA956238 A CA 956238A CA 135825 A CA135825 A CA 135825A CA 956238 A CA956238 A CA 956238A
Authority
CA
Canada
Prior art keywords
keyboards
read
high speed
speed serial
serial scan
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
CA135,825A
Other versions
CA135825S (en
Inventor
William G. Klehm (Jr.)
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.)
Unisys Corp
Original Assignee
Burroughs Corp
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 Burroughs Corp filed Critical Burroughs Corp
Application granted granted Critical
Publication of CA956238A publication Critical patent/CA956238A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/785—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 characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • 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
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H03M11/20—Dynamic coding, i.e. by key scanning
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/01—Protective enclosure
    • H01H2201/012—Inert gas in contact space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/03—Composite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/032—Several contacts formed in one plate or layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/05—Force concentrator; Actuating dimple
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/016—Switch site protrusions; Force concentrators

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
CA135,825A 1971-03-01 1972-02-29 High speed serial scan and read-out of keyboards Expired CA956238A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US11949071A 1971-03-01 1971-03-01
FR7232827A FR2199895A5 (en) 1971-03-01 1972-09-15
NL727213330A NL154024B (en) 1971-03-01 1972-10-03 DEVICE FOR INPUTING INFORMATION BY MEANS OF KEYS.
DE2252127A DE2252127C2 (en) 1971-03-01 1972-10-24 Arrangement for the output of data
US00337374A US3829632A (en) 1971-03-01 1973-03-02 Protective environment for keyboard actuatable switches

Publications (1)

Publication Number Publication Date
CA956238A true CA956238A (en) 1974-10-15

Family

ID=27510278

Family Applications (1)

Application Number Title Priority Date Filing Date
CA135,825A Expired CA956238A (en) 1971-03-01 1972-02-29 High speed serial scan and read-out of keyboards

Country Status (6)

Country Link
US (2) US3745536A (en)
CA (1) CA956238A (en)
DE (1) DE2252127C2 (en)
FR (1) FR2199895A5 (en)
GB (1) GB1339223A (en)
NL (1) NL154024B (en)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390866A (en) * 1971-05-19 1983-06-28 Illinois Tool Works Inc. Keyboard with electronic hysteresis
USH1970H1 (en) * 1971-07-19 2001-06-05 Texas Instruments Incorporated Variable function programmed system
US3993884A (en) * 1972-09-15 1976-11-23 Victor Comptometer Corporation Detachably mounted keyboard pushbutton actuators and housing assembly
US3911233A (en) * 1973-02-20 1975-10-07 Matsushita Electric Ind Co Ltd Keyboard switch for desk top electronic calculators
US3940578A (en) * 1973-04-09 1976-02-24 Alphameric Keyboards Limited Keyboard structure having panel mounted key actuators with electrical component operating element
IT980896B (en) * 1973-04-24 1974-10-10 Olivetti & Co Spa IMPROVEMENTS TO ELECTRONIC CALCULATORS
GB1479026A (en) * 1973-08-24 1977-07-06 Giko Kk Push button switch
US3987416A (en) * 1973-09-24 1976-10-19 Vandierendonck Jerry L Electronic calculator with display and keyboard scanning signal generator in data memory
US3931610A (en) * 1973-11-29 1976-01-06 Teletype Corporation Capacitive keyswitch sensor and method
US3961147A (en) * 1974-04-10 1976-06-01 Teletype Corporation Keying contact assembly
US3890480A (en) * 1974-05-23 1975-06-17 Cincinnati Milacron Inc Hermetic sealing structure for electronic keyboard apparatus
US3979568A (en) * 1974-09-23 1976-09-07 Xerox Corporation Keyboard switch assembly having raised contacts supported by helicline legs on a common conductive sheet
US4028509A (en) * 1975-08-29 1977-06-07 Hughes Aircraft Company Simplified tabulator keyboard assembly for use in watch/calculator having transparent foldable flexible printed circuit board with contacts and actuator indicia
US4046975A (en) * 1975-09-22 1977-09-06 Chomerics, Inc. Keyboard switch assembly having internal gas passages preformed in spacer member
US4476541A (en) * 1977-12-02 1984-10-09 Texas Instruments Incorporated Variable function programmed system
US4471460A (en) * 1977-12-02 1984-09-11 Texas Instruments Incorporated Variable function programmed system
US4471461A (en) * 1977-12-02 1984-09-11 Texas Instruments Incorporated Variable function programmed system
US4300127A (en) * 1978-09-27 1981-11-10 Bernin Victor M Solid state noncontacting keyboard employing a differential transformer element
US4494109A (en) * 1978-09-27 1985-01-15 Bernin Victor M Noncontacting keyboard employing a transformer element
FR2443129A1 (en) * 1978-11-29 1980-06-27 Serras Paulet Edouard ELECTRICAL OR ELECTRONIC SWITCHING DEVICE FORMING PUSH BUTTON OR KEYBOARD WITH SOCKET KEYS
US4305135A (en) * 1979-07-30 1981-12-08 International Business Machines Corp. Program controlled capacitive keyboard variable threshold sensing system
US4376239A (en) * 1980-10-03 1983-03-08 Allen-Bradley Company Industrial membrane switch
US4351988A (en) * 1980-12-08 1982-09-28 Ncr Corporation Keyboard switch assembly
US4345119A (en) * 1981-02-19 1982-08-17 Motorola Inc. Membrane switch assembly with improved spacer
US4515999A (en) * 1983-01-24 1985-05-07 Rogers Corporation Full travel keyboard
US4581603A (en) * 1983-03-11 1986-04-08 The Maxi-Switch Company Switch matrix key closure validation device and method
GB2136633A (en) * 1983-03-18 1984-09-19 Broderna Danielson Membrane switch assembly
KR900002525Y1 (en) * 1984-07-11 1990-03-30 알프스덴기 가부시기 가이샤 Push-button switch
JPS6132127A (en) * 1984-07-24 1986-02-14 Alps Electric Co Ltd Key output system of keyboard
US4598181A (en) * 1984-11-13 1986-07-01 Gte Communication Systems Corp. Laminate switch assembly having improved tactile feel and improved reliability of operation
FR2576449A1 (en) * 1985-01-18 1986-07-25 Hutchinson Keyboard with integral control elements with predetermination of the law for pressurising their electroconductive element, and method of manufacturing this keyboard
US4833447A (en) * 1985-04-27 1989-05-23 Canon Kabushiki Kaisha Input device
JP2757992B2 (en) * 1988-02-12 1998-05-25 キヤノン株式会社 Input device
FI85072C (en) * 1990-04-12 1992-02-25 Nokia Mobile Phones Ltd Circuit arrangement.
US5340955A (en) * 1992-07-20 1994-08-23 Digitran Company, A Division Of Xcel Corp. Illuminated and moisture-sealed switch panel assembly
US5319996A (en) * 1993-08-13 1994-06-14 Kransco Debris resistant foot pedal switch assembly
US5563630A (en) * 1993-10-28 1996-10-08 Mind Path Technologies, Inc. Computer mouse
JP3782521B2 (en) * 1996-08-23 2006-06-07 富士通コンポーネント株式会社 Pushbutton structure and keyboard
US6803903B1 (en) * 2000-08-17 2004-10-12 Nokia Mobile Phones, Ltd. Integration of organic light-emitting components into the keyboard of an electronic device
US7832628B2 (en) * 2005-10-21 2010-11-16 Verifone, Inc. Protective cover for terminal keypad security switches
WO2007065253A1 (en) * 2005-12-05 2007-06-14 Omron Dualtec Automotive Electronics Inc. Electrical switch
TWI320900B (en) * 2006-01-18 2010-02-21 Darfon Electronics Corp Key operated apparatus having shield and method of making the same
GB0703172D0 (en) 2007-02-19 2007-03-28 Pa Knowledge Ltd Printed circuit boards
US20090153491A1 (en) * 2007-12-14 2009-06-18 Research In Motion Limited Key in a keypad of an electronic device providing feedback
US8618420B2 (en) * 2008-08-18 2013-12-31 Semblant Global Limited Apparatus with a wire bond and method of forming the same
CA2957997C (en) 2008-08-18 2019-10-22 Semblant Limited Halo-hydrocarbon polymer coating
US8995146B2 (en) 2010-02-23 2015-03-31 Semblant Limited Electrical assembly and method
CN201698936U (en) * 2010-04-13 2011-01-05 深圳富泰宏精密工业有限公司 Waterproof key component and electronic device thereof
JP5099244B2 (en) * 2010-05-27 2012-12-19 株式会社デンソー Instrument operation knob structure
GB201621177D0 (en) 2016-12-13 2017-01-25 Semblant Ltd Protective coating
US10965287B2 (en) * 2018-12-20 2021-03-30 Dexin Electronic Ltd. Replaceable key structure

Also Published As

Publication number Publication date
DE2252127C2 (en) 1974-11-21
US3745536A (en) 1973-07-10
GB1339223A (en) 1973-11-28
NL154024B (en) 1977-07-15
NL7213330A (en) 1974-04-05
US3829632A (en) 1974-08-13
DE2252127B1 (en) 1974-04-18
FR2199895A5 (en) 1974-04-12

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