GB1407406A - Keyboards - Google Patents

Keyboards

Info

Publication number
GB1407406A
GB1407406A GB4712271A GB4712271A GB1407406A GB 1407406 A GB1407406 A GB 1407406A GB 4712271 A GB4712271 A GB 4712271A GB 4712271 A GB4712271 A GB 4712271A GB 1407406 A GB1407406 A GB 1407406A
Authority
GB
United Kingdom
Prior art keywords
key
paths
keyboard
detectors
gates
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
GB4712271A
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.)
Gemalto Terminals Ltd
Original Assignee
Solartron Electronic Group Ltd
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 Solartron Electronic Group Ltd filed Critical Solartron Electronic Group Ltd
Priority to GB4712271A priority Critical patent/GB1407406A/en
Priority to DE19722249222 priority patent/DE2249222A1/de
Priority to JP47101507A priority patent/JPS4862339A/ja
Priority to FR7235654A priority patent/FR2249536A5/fr
Priority to IT3027372A priority patent/IT968757B/it
Publication of GB1407406A publication Critical patent/GB1407406A/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
    • H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
    • 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
    • H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
    • H03K17/969—Switches controlled by moving an element forming part of the switch using opto-electronic devices having a plurality of control members, e.g. keyboard

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
GB4712271A 1971-10-09 1971-10-09 Keyboards Expired GB1407406A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4712271A GB1407406A (en) 1971-10-09 1971-10-09 Keyboards
DE19722249222 DE2249222A1 (de) 1971-10-09 1972-10-07 Schalttafel
JP47101507A JPS4862339A (de) 1971-10-09 1972-10-09
FR7235654A FR2249536A5 (de) 1971-10-09 1972-10-09
IT3027372A IT968757B (it) 1971-10-09 1972-10-09 Tastiera mediante la quale l aziona mento di un tasto controlla il pas saggio di energia radiante come la luce da una fonte ad un rivelatore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4712271A GB1407406A (en) 1971-10-09 1971-10-09 Keyboards

Publications (1)

Publication Number Publication Date
GB1407406A true GB1407406A (en) 1975-09-24

Family

ID=10443813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4712271A Expired GB1407406A (en) 1971-10-09 1971-10-09 Keyboards

Country Status (5)

Country Link
JP (1) JPS4862339A (de)
DE (1) DE2249222A1 (de)
FR (1) FR2249536A5 (de)
GB (1) GB1407406A (de)
IT (1) IT968757B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132344A (en) * 1982-12-23 1984-07-04 Fairchild Camera Instr Co High voltage analog solid state switch
GB2406944A (en) * 2003-10-09 2005-04-13 Motorola Inc Keyboard switching devices

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815947B2 (ja) * 1975-02-28 1983-03-28 富士通株式会社 ジヨウホウデンソウヨウ ハツコウダイオ−ド
JPS58501608A (ja) * 1981-12-04 1983-09-22 バロ−ス・コ−ポレ−シヨン 機械的操作機構
JPS60211711A (ja) * 1984-04-03 1985-10-24 サンアロ−株式会社 キ−ボ−ドスイツチ
FR2672396B1 (fr) * 1991-01-31 1994-06-17 Battarel Claude Clavier optique matriciel.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132344A (en) * 1982-12-23 1984-07-04 Fairchild Camera Instr Co High voltage analog solid state switch
GB2406944A (en) * 2003-10-09 2005-04-13 Motorola Inc Keyboard switching devices

Also Published As

Publication number Publication date
JPS4862339A (de) 1973-08-31
IT968757B (it) 1974-03-20
FR2249536A5 (de) 1975-05-23
DE2249222A1 (de) 1973-04-12

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees