CA937875A - N-key rollover keyboard - Google Patents

N-key rollover keyboard

Info

Publication number
CA937875A
CA937875A CA133161A CA133161A CA937875A CA 937875 A CA937875 A CA 937875A CA 133161 A CA133161 A CA 133161A CA 133161 A CA133161 A CA 133161A CA 937875 A CA937875 A CA 937875A
Authority
CA
Canada
Prior art keywords
key rollover
keyboard
rollover keyboard
key
rollover
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
CA133161A
Inventor
M. Bernin Victor
A. Engstrom Keith
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Application granted granted Critical
Publication of CA937875A publication Critical patent/CA937875A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
    • H03K17/81—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
    • 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
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Input From Keyboards Or The Like (AREA)
CA133161A 1971-05-19 1972-01-25 N-key rollover keyboard Expired CA937875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14490271A 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
CA937875A true CA937875A (en) 1973-12-04

Family

ID=22510654

Family Applications (1)

Application Number Title Priority Date Filing Date
CA133161A Expired CA937875A (en) 1971-05-19 1972-01-25 N-key rollover keyboard

Country Status (11)

Country Link
JP (1) JPS5329970B1 (en)
BR (1) BR7202800D0 (en)
CA (1) CA937875A (en)
CH (1) CH567762A5 (en)
DE (1) DE2219288B2 (en)
FR (1) FR2139237A5 (en)
GB (1) GB1380282A (en)
HK (1) HK5478A (en)
IT (1) IT950268B (en)
NL (1) NL152996B (en)
SE (1) SE375392B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003139A (en) * 1955-04-29 1961-10-03 Gen Electronic Lab Inc Electrical information storage system
US3193809A (en) * 1961-05-03 1965-07-06 Sylvania Electric Prod Memory noise cancellation
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit

Also Published As

Publication number Publication date
IT950268B (en) 1973-06-20
JPS5329970B1 (en) 1978-08-24
DE2219288A1 (en) 1972-11-30
CH567762A5 (en) 1975-10-15
FR2139237A5 (en) 1973-01-05
SE375392B (en) 1975-04-14
NL7205053A (en) 1972-11-21
GB1380282A (en) 1975-01-08
NL152996B (en) 1977-04-15
HK5478A (en) 1978-02-03
DE2219288B2 (en) 1975-09-04
BR7202800D0 (en) 1973-06-12

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