ES501449A0 - Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicos - Google Patents
Perfeccionamientos en un circuito para el accionamiento de elementos indicadores optoelectronicosInfo
- 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
Links
- 230000005693 optoelectronics Effects 0.000 title 1
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)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (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)
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)
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)
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 |
-
1980
- 1980-04-17 DE DE3014845A patent/DE3014845C2/de not_active Expired
-
1981
- 1981-02-05 IN IN135/CAL/81A patent/IN151558B/en unknown
- 1981-02-27 US US06/239,042 patent/US4355308A/en not_active Expired - Fee Related
- 1981-04-03 GB GB8110467A patent/GB2074357B/en not_active Expired
- 1981-04-13 EP EP81102830A patent/EP0038506A3/de not_active Ceased
- 1981-04-13 NO NO811273A patent/NO811273L/no unknown
- 1981-04-14 AR AR284970A patent/AR226453A1/es active
- 1981-04-15 DK DK173681A patent/DK173681A/da not_active IP Right Cessation
- 1981-04-15 BR BR8102345A patent/BR8102345A/pt unknown
- 1981-04-15 ES ES501449A patent/ES501449A0/es active Granted
- 1981-04-16 ZA ZA00812549A patent/ZA812549B/xx unknown
- 1981-04-16 CA CA000375711A patent/CA1198535A/en not_active Expired
- 1981-04-16 FI FI811206A patent/FI68921C/fi not_active IP Right Cessation
- 1981-04-16 AU AU69605/81A patent/AU524337B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
ES8202972A1 (es) | 1982-02-16 |
EP0038506A2 (de) | 1981-10-28 |
EP0038506A3 (de) | 1985-04-17 |
GB2074357A (en) | 1981-10-28 |
FI811206L (fi) | 1981-10-18 |
FI68921B (fi) | 1985-07-31 |
AR226453A1 (es) | 1982-07-15 |
GB2074357B (en) | 1983-12-21 |
NO811273L (no) | 1981-10-19 |
DE3014845C2 (de) | 1982-05-27 |
DE3014845A1 (de) | 1981-10-22 |
AU6960581A (en) | 1981-10-22 |
IN151558B (es) | 1983-05-21 |
BR8102345A (pt) | 1981-12-22 |
ZA812549B (en) | 1982-04-28 |
CA1198535A (en) | 1985-12-24 |
AU524337B2 (en) | 1982-09-09 |
US4355308A (en) | 1982-10-19 |
DK173681A (da) | 1981-10-18 |
FI68921C (fi) | 1985-11-11 |
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