CH527478A - Data display device with a data entry keyboard - Google Patents

Data display device with a data entry keyboard

Info

Publication number
CH527478A
CH527478A CH1172170A CH1172170A CH527478A CH 527478 A CH527478 A CH 527478A CH 1172170 A CH1172170 A CH 1172170A CH 1172170 A CH1172170 A CH 1172170A CH 527478 A CH527478 A CH 527478A
Authority
CH
Switzerland
Prior art keywords
data
display device
entry keyboard
data entry
data display
Prior art date
Application number
CH1172170A
Other languages
German (de)
Inventor
Reiser Marcel
Kurt Dipl Ing Ehrat
Kuehnlein Werner
Original Assignee
Ciba Geigy Ag
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 Ciba Geigy Ag filed Critical Ciba Geigy Ag
Priority to CH1172170A priority Critical patent/CH527478A/en
Priority to DE19712138823 priority patent/DE2138823A1/en
Priority to FR7128407A priority patent/FR2103904A5/fr
Priority to GB3667971A priority patent/GB1304149A/en
Publication of CH527478A publication Critical patent/CH527478A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
CH1172170A 1970-08-04 1970-08-04 Data display device with a data entry keyboard CH527478A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH1172170A CH527478A (en) 1970-08-04 1970-08-04 Data display device with a data entry keyboard
DE19712138823 DE2138823A1 (en) 1970-08-04 1971-08-03 Data display device
FR7128407A FR2103904A5 (en) 1970-08-04 1971-08-03
GB3667971A GB1304149A (en) 1970-08-04 1971-08-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1172170A CH527478A (en) 1970-08-04 1970-08-04 Data display device with a data entry keyboard

Publications (1)

Publication Number Publication Date
CH527478A true CH527478A (en) 1972-08-31

Family

ID=4376247

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1172170A CH527478A (en) 1970-08-04 1970-08-04 Data display device with a data entry keyboard

Country Status (4)

Country Link
CH (1) CH527478A (en)
DE (1) DE2138823A1 (en)
FR (1) FR2103904A5 (en)
GB (1) GB1304149A (en)

Also Published As

Publication number Publication date
FR2103904A5 (en) 1972-04-14
GB1304149A (en) 1973-01-24
DE2138823A1 (en) 1972-02-10

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Legal Events

Date Code Title Description
PL Patent ceased