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IT1009479B - POSITION CODING DEVICE - Google Patents

POSITION CODING DEVICE

Info

Publication number
IT1009479B
IT1009479B IT6823574A IT6823574A IT1009479B IT 1009479 B IT1009479 B IT 1009479B IT 6823574 A IT6823574 A IT 6823574A IT 6823574 A IT6823574 A IT 6823574A IT 1009479 B IT1009479 B IT 1009479B
Authority
IT
Italy
Prior art keywords
coding device
position coding
coding
Prior art date
Application number
IT6823574A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1009479B publication Critical patent/IT1009479B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
IT6823574A 1973-04-18 1974-04-17 POSITION CODING DEVICE IT1009479B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1859573 1973-04-18

Publications (1)

Publication Number Publication Date
IT1009479B true IT1009479B (en) 1976-12-10

Family

ID=10115151

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6823574A IT1009479B (en) 1973-04-18 1974-04-17 POSITION CODING DEVICE

Country Status (3)

Country Link
DE (1) DE2339453A1 (en)
FR (1) FR2226702A1 (en)
IT (1) IT1009479B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205304A (en) * 1977-09-22 1980-05-27 General Electric Company Two dimensional light beam selection system
US4641026A (en) * 1984-02-02 1987-02-03 Texas Instruments Incorporated Optically activated keyboard for digital system
DE3535551A1 (en) * 1985-10-04 1987-04-09 Guenter Brueninghaus Keyboard

Also Published As

Publication number Publication date
FR2226702A1 (en) 1974-11-15
DE2339453A1 (en) 1974-11-07

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