GB1317141A - Self-encoding keyboard employing eddy current shorting - Google Patents

Self-encoding keyboard employing eddy current shorting

Info

Publication number
GB1317141A
GB1317141A GB16271A GB16271A GB1317141A GB 1317141 A GB1317141 A GB 1317141A GB 16271 A GB16271 A GB 16271A GB 16271 A GB16271 A GB 16271A GB 1317141 A GB1317141 A GB 1317141A
Authority
GB
United Kingdom
Prior art keywords
board
key
keys
eddy current
depressed
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
GB16271A
Other languages
English (en)
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.)
Bunker Ramo Corp
Original Assignee
Bunker Ramo 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 Bunker Ramo Corp filed Critical Bunker Ramo Corp
Publication of GB1317141A publication Critical patent/GB1317141A/en
Expired 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
    • H03K17/97—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
    • H03M11/22—Static coding
    • 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
    • H03K17/94—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
    • H03K2017/9706—Inductive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
GB16271A 1970-01-02 1971-01-01 Self-encoding keyboard employing eddy current shorting Expired GB1317141A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16070A 1970-01-02 1970-01-02
US573770A 1970-01-26 1970-01-26

Publications (1)

Publication Number Publication Date
GB1317141A true GB1317141A (en) 1973-05-16

Family

ID=26667289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16271A Expired GB1317141A (en) 1970-01-02 1971-01-01 Self-encoding keyboard employing eddy current shorting

Country Status (9)

Country Link
US (2) US3623080A (enExample)
JP (1) JPS529097B1 (enExample)
CA (1) CA923431A (enExample)
CH (1) CH529480A (enExample)
DE (1) DE2063292C3 (enExample)
FR (1) FR2075168A5 (enExample)
GB (1) GB1317141A (enExample)
NL (1) NL7018374A (enExample)
SE (1) SE366408B (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115703A5 (enExample) * 1970-11-30 1972-07-07 Cit Alcatel
US4117438A (en) * 1977-04-13 1978-09-26 Datanetics Corporation Contactless keyswitch for keyboards
US4494109A (en) * 1978-09-27 1985-01-15 Bernin Victor M Noncontacting keyboard employing a transformer element
US4300127A (en) * 1978-09-27 1981-11-10 Bernin Victor M Solid state noncontacting keyboard employing a differential transformer element
US4283714A (en) * 1979-08-08 1981-08-11 Texas Instruments Incorporated Magnetic keyboard system
US4401986A (en) * 1979-12-26 1983-08-30 Texas Instruments Incorporated Position sensor and system
US4398180A (en) * 1980-06-26 1983-08-09 International Standard Electric Corporation Contactless keyboard
FR2518334B1 (fr) * 1981-12-15 1986-02-14 Cit Alcatel Clavier electrique a commande magnetique
JPS60148019A (ja) * 1983-12-22 1985-08-05 アンプ　インコーポレーテツド 膜スイツチ組立体
DE19506509C2 (de) * 1995-02-24 1996-12-05 Preh Elektro Feinmechanik Tastenfeld für Verkaufs- und Registrierkassen
US7791506B2 (en) * 2007-03-30 2010-09-07 Zf Friedrichshafen Ag Configurable networked user interface and switch pack

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210734A (en) * 1959-06-30 1965-10-05 Ibm Magnetic core transfer matrix
US3160875A (en) * 1962-08-01 1964-12-08 Sperry Rand Corp Magnetic encoder
US3495236A (en) * 1969-04-16 1970-02-10 Burroughs Corp Transducer

Also Published As

Publication number Publication date
JPS529097B1 (enExample) 1977-03-14
CA923431A (en) 1973-03-27
US3623080A (en) 1971-11-23
US3623081A (en) 1971-11-23
CH529480A (de) 1972-10-15
DE2063292A1 (de) 1972-06-15
DE2063292C3 (de) 1979-09-27
SE366408B (enExample) 1974-04-22
NL7018374A (enExample) 1971-07-06
FR2075168A5 (enExample) 1971-10-08
DE2063292B2 (de) 1979-02-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee