GB1299979A - Improvements in or relating to control systems - Google Patents

Improvements in or relating to control systems

Info

Publication number
GB1299979A
GB1299979A GB3687170A GB3687170A GB1299979A GB 1299979 A GB1299979 A GB 1299979A GB 3687170 A GB3687170 A GB 3687170A GB 3687170 A GB3687170 A GB 3687170A GB 1299979 A GB1299979 A GB 1299979A
Authority
GB
United Kingdom
Prior art keywords
conductors
elements
transparent
photo
sensitive
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
GB3687170A
Other languages
English (en)
Inventor
Alfred Brian Edwin Ellis
Geoffrey Vernon Bunton
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3687170A priority Critical patent/GB1299979A/en
Priority to IT6955671A priority patent/IT957113B/it
Priority to DE19712138236 priority patent/DE2138236C3/de
Priority to FR7128088A priority patent/FR2112194B1/fr
Publication of GB1299979A publication Critical patent/GB1299979A/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
    • 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)
  • Structure Of Printed Boards (AREA)
  • Solid State Image Pick-Up Elements (AREA)
GB3687170A 1970-07-30 1970-07-30 Improvements in or relating to control systems Expired GB1299979A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3687170A GB1299979A (en) 1970-07-30 1970-07-30 Improvements in or relating to control systems
IT6955671A IT957113B (it) 1970-07-30 1971-07-29 Sistema di controllo per l immissio ne di dati o istruzioni in un ela boratore elettronico
DE19712138236 DE2138236C3 (de) 1970-07-30 1971-07-30 Vorrichtung zum Eingeben von Informationen in einen Rechner
FR7128088A FR2112194B1 (enExample) 1970-07-30 1971-07-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3687170A GB1299979A (en) 1970-07-30 1970-07-30 Improvements in or relating to control systems

Publications (1)

Publication Number Publication Date
GB1299979A true GB1299979A (en) 1972-12-13

Family

ID=10391855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3687170A Expired GB1299979A (en) 1970-07-30 1970-07-30 Improvements in or relating to control systems

Country Status (4)

Country Link
DE (1) DE2138236C3 (enExample)
FR (1) FR2112194B1 (enExample)
GB (1) GB1299979A (enExample)
IT (1) IT957113B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018744B1 (en) * 1979-05-01 1984-07-18 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Radiation detectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018744B1 (en) * 1979-05-01 1984-07-18 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Radiation detectors

Also Published As

Publication number Publication date
DE2138236A1 (de) 1972-02-10
DE2138236B2 (de) 1973-09-20
IT957113B (it) 1973-10-10
DE2138236C3 (de) 1974-05-09
FR2112194A1 (enExample) 1972-06-16
FR2112194B1 (enExample) 1977-03-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee