ES8202972A1 - 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
- ES8202972A1 ES8202972A1 ES501449A ES501449A ES8202972A1 ES 8202972 A1 ES8202972 A1 ES 8202972A1 ES 501449 A ES501449 A ES 501449A ES 501449 A ES501449 A ES 501449A ES 8202972 A1 ES8202972 A1 ES 8202972A1
- Authority
- ES
- Spain
- Prior art keywords
- drive lines
- telephonic
- subset
- electro
- control system
- 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
Links
- 239000004065 semiconductor Substances 0.000 abstract 2
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)
Abstract
CIRCUITO PARA EL ACCIONAMIENTO DE ELEMENTOS INDICADORES OPTOELECTRONICOS, TALES COMO LOS DIODOS LUMINISCENTES UTILIZADOS EN APARATOS TERMINALES DE INSTALACIONES TELEFONICAS PARA LA INDICACION OPTICA DE ESTADOS DE TRANSICION O DE FUNCIONAMIENTO. CONSTA DE UN CIRCUITO LIMITADOR DE CORRIENTE (BG), A TRAVES DEL CUAL SE ALIMENTA EL SISTEMA; DE UN CIRCUITO EN SERIE FORMADO POR LOS ELEMENTOS INDICADORES OPTICOS (LED1, LED3) QUE PUEDEN CONECTARSE ACTIVAMENTE MEDIANTE LOS CONDUCTORES DE ACCIONAMIENTO EN LINEAS (A, B); DE UN CIRCUITO EN SERIE FORMADO POR LOS ELEMENTOS INDICADORES (LED2, LED4) QUE PUEDEN CONECTARSE ACTIVAMENTE MEDIANTE LOS CONDUCTORES DE ACCIONAMIENTO
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 true ES8202972A1 (es) | 1982-02-16 |
ES501449A0 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 BR BR8102345A patent/BR8102345A/pt unknown
- 1981-04-15 DK DK173681A patent/DK173681A/da not_active IP Right Cessation
- 1981-04-15 ES ES501449A patent/ES501449A0/es active Granted
- 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
- 1981-04-16 ZA ZA00812549A patent/ZA812549B/xx unknown
- 1981-04-16 CA CA000375711A patent/CA1198535A/en not_active Expired
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 |
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 |
ES501449A0 (es) | 1982-02-16 |
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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