ES501449A0 - Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicos - Google Patents

Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicos

Info

Publication number
ES501449A0
ES501449A0 ES501449A ES501449A ES501449A0 ES 501449 A0 ES501449 A0 ES 501449A0 ES 501449 A ES501449 A ES 501449A ES 501449 A ES501449 A ES 501449A ES 501449 A0 ES501449 A0 ES 501449A0
Authority
ES
Spain
Prior art keywords
circuit
indicator elements
optoelectronic indicator
optoelectronic
elements
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.)
Granted
Application number
ES501449A
Other languages
English (en)
Other versions
ES8202972A1 (es
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of ES8202972A1 publication Critical patent/ES8202972A1/es
Publication of ES501449A0 publication Critical patent/ES501449A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/62—Keyboard equipment
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Led Devices (AREA)
  • Telephone Set Structure (AREA)
  • Telephone Function (AREA)
  • Optical Communication System (AREA)
ES501449A 1980-04-17 1981-04-15 Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicos Granted ES501449A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3014845A DE3014845C2 (de) 1980-04-17 1980-04-17 Schaltungsanordnung zur Ansteuerung von, insbesondere Endgeräten in Fernsprechanlagen zugehörigen optoelektronischen Anzeigeelementen in Matrixanordnung

Publications (2)

Publication Number Publication Date
ES8202972A1 ES8202972A1 (es) 1982-02-16
ES501449A0 true ES501449A0 (es) 1982-02-16

Family

ID=6100330

Family Applications (1)

Application Number Title Priority Date Filing Date
ES501449A Granted ES501449A0 (es) 1980-04-17 1981-04-15 Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicos

Country Status (14)

Country Link
US (1) US4355308A (es)
EP (1) EP0038506A3 (es)
AR (1) AR226453A1 (es)
AU (1) AU524337B2 (es)
BR (1) BR8102345A (es)
CA (1) CA1198535A (es)
DE (1) DE3014845C2 (es)
DK (1) DK173681A (es)
ES (1) ES501449A0 (es)
FI (1) FI68921C (es)
GB (1) GB2074357B (es)
IN (1) IN151558B (es)
NO (1) NO811273L (es)
ZA (1) ZA812549B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149555B (en) * 1983-11-10 1987-01-28 Standard Telephones Cables Ltd Improvements in liquid crystal displays
JP4409200B2 (ja) * 2003-04-16 2010-02-03 株式会社コマデン 表示用ｌｅｄの駆動回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1359826A (en) * 1971-08-26 1974-07-10 Marconi Co Ltd Electroluminescent display devices
US3872463A (en) * 1972-04-17 1975-03-18 James M Lapeyre Alphanumeric display system
US4045683A (en) * 1975-10-28 1977-08-30 Litton Systems, Inc. Drive circuit with constant current
US4198629A (en) * 1977-06-06 1980-04-15 General Electric Company Numerical display using plural light sources and having a reduced and substantially constant current requirement
DE2758551A1 (de) * 1977-12-23 1979-06-28 Elmeg Schaltungsanordnung zur steuerung von lichtemittierenden dioden (led)
JPS54134597A (en) * 1978-04-11 1979-10-19 Mitsubishi Electric Corp Display circuit

Also Published As

Publication number Publication date
NO811273L (no) 1981-10-19
AU524337B2 (en) 1982-09-09
BR8102345A (pt) 1981-12-22
FI811206L (fi) 1981-10-18
ZA812549B (en) 1982-04-28
GB2074357B (en) 1983-12-21
ES8202972A1 (es) 1982-02-16
FI68921C (fi) 1985-11-11
DE3014845C2 (de) 1982-05-27
IN151558B (es) 1983-05-21
EP0038506A2 (de) 1981-10-28
GB2074357A (en) 1981-10-28
EP0038506A3 (de) 1985-04-17
AR226453A1 (es) 1982-07-15
DE3014845A1 (de) 1981-10-22
AU6960581A (en) 1981-10-22
CA1198535A (en) 1985-12-24
DK173681A (da) 1981-10-18
US4355308A (en) 1982-10-19
FI68921B (fi) 1985-07-31

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