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GB1376691A - Photoelectric pushbutton switch - Google Patents

Photoelectric pushbutton switch

Info

Publication number
GB1376691A
GB1376691A GB5431772A GB5431772A GB1376691A GB 1376691 A GB1376691 A GB 1376691A GB 5431772 A GB5431772 A GB 5431772A GB 5431772 A GB5431772 A GB 5431772A GB 1376691 A GB1376691 A GB 1376691A
Authority
GB
United Kingdom
Prior art keywords
channels
cover
light beams
switches
photo
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
GB5431772A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority claimed from DE19712159682 external-priority patent/DE2159682C3/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1376691A publication Critical patent/GB1376691A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/12—Construction of key buttons
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • 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

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Human Computer Interaction (AREA)
  • Push-Button Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

1376691 Photo-electric key switches INTERNATIONAL STANDARD ELECTRIC CORP 24 Nov 1972 [1 Dec 1971] 54317/72 Heading G1A [Also in Divisions B6 and H4] A photo-electric push-button switch comprises a body having two crossing light channels and a resiliently mounted key in the form of a cover movable from one position in which the channels are cleared to a second position in which the channels are closed. As shown, Fig. 1, the body 1 is of opaque plastics material and has two crossing channels 2, 3 which may be filled with a transparent plastics material or glass, for light beams extending between respective sources and detectors (not shown). The cover 4 is retained by pins 8, 9 which snap into bores 10 in the body and is biased by means of a spring 5 located by means of a recess 6 in the body and a projection 7 on the cover. When depressed the skirt of the cover obscures the ends of the channels to interrupt the light beams. A plurality of such switches can be mounted on a common base-plate by means of lugs 11 to form a co-ordinate array with appropriate light beams passing through each row and column of switches for a business machine e.g. typewriter or calculator keyboard or as a telephone keyboard.
GB5431772A 1971-12-01 1972-11-24 Photoelectric pushbutton switch Expired GB1376691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712159682 DE2159682C3 (en) 1971-12-01 Photoelectric key switch

Publications (1)

Publication Number Publication Date
GB1376691A true GB1376691A (en) 1974-12-11

Family

ID=5826742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5431772A Expired GB1376691A (en) 1971-12-01 1972-11-24 Photoelectric pushbutton switch

Country Status (3)

Country Link
FR (1) FR2164194A5 (en)
GB (1) GB1376691A (en)
NL (1) NL7216211A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540427A (en) * 1979-07-31 1985-09-10 Isaflex Ag Method for improving water retention qualities of soil and an agent for performing this method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE30131T1 (en) * 1982-04-15 1987-10-15 Alcatel Nv KEY ELEMENT.
FR2831965B1 (en) * 2001-11-07 2006-08-04 Siemens Ag DEVICE FOR VISUALIZATION BY PROJECTION

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540427A (en) * 1979-07-31 1985-09-10 Isaflex Ag Method for improving water retention qualities of soil and an agent for performing this method

Also Published As

Publication number Publication date
NL7216211A (en) 1973-06-05
DE2159682B2 (en) 1976-08-19
FR2164194A5 (en) 1973-07-27
DE2159682A1 (en) 1973-06-20

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Legal Events

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