ES179920A1 - IMPROVEMENTS IN POTATING CURRENT TRANSMISSION SYSTEMS - Google Patents
IMPROVEMENTS IN POTATING CURRENT TRANSMISSION SYSTEMSInfo
- Publication number
- ES179920A1 ES179920A1 ES0179920A ES179920A ES179920A1 ES 179920 A1 ES179920 A1 ES 179920A1 ES 0179920 A ES0179920 A ES 0179920A ES 179920 A ES179920 A ES 179920A ES 179920 A1 ES179920 A1 ES 179920A1
- Authority
- ES
- Spain
- Prior art keywords
- bands
- carrier
- terminal equipment
- frequencies
- narrow
- 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
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Mejoras en sistemas de transmisión por corrientes portadoras caracterizadas por un sistema eléctrico de comunicación por corrientes portadoras y de canales múltiples en que los canales principales ocupan una serie de adyacentes bandas de frecuencias relativamente estrechas, llevando los equipos terminales de banda estrecha para los canales principales acoplados a un medios transmisor, los equipos terminales de banda ancha para emplear alternativamente uno o más canales que ocupen una banda diferente y relativamente ancha de frecuencias la cual solapa dos o más de dichas adyacentes bandas relativamente estrechas, el equipo terminal de banda ancha , estando también acoplado al medio transmisor, un generador de frecuencia portadora adaptado a suministrar al equipo terminal de banda estrecha una serie de frecuencias portadoras de diferentes frecuencias correspondiendo respectivamente a las dichas relativamente estrechas bandas de frecuencias y un dispositivo conmutador dispuesto cuando funcionaa transferir las ondas portadoras correspondientes a una de las bandas solapadas por cada una de las bandas relativamente anchas, desde el equipo de banda estrecha al equipo de banda ancha, dicho aparato conmutador estando dispuesto para desconectar cuando funciona las ondas portadoras correspondientes a las otras bandas de frecuencias solapadas.Improvements in carrier-current transmission systems characterized by a multi-channel and carrier-current communication electrical system in which the main channels occupy a series of adjacent relatively narrow frequency bands, with narrow-band terminal equipment carrying the coupled main channels to a transmitter means, the broadband terminal equipment to alternately employ one or more channels occupying a different and relatively wide band of frequencies which overlaps two or more of said adjacent relatively narrow bands, the broadband terminal equipment, also being coupled to the transmitting means, a carrier frequency generator adapted to supply the narrowband terminal equipment with a series of carrier frequencies of different frequencies corresponding respectively to the said relatively narrow frequency bands and a switching device arranged when operating It is able to transfer the carrier waves corresponding to one of the bands overlapped by each of the relatively wide bands, from the narrow band equipment to the broadband equipment, said switching apparatus being arranged to disconnect when operating the carrier waves corresponding to the other bands of overlapping frequencies.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35465/46A GB625294A (en) | 1946-11-29 | 1946-11-29 | Improvements in or relating to carrier current transmission systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES179920A1 true ES179920A1 (en) | 1947-11-01 |
Family
ID=38463246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0179920A Expired ES179920A1 (en) | 1946-11-29 | 1947-09-27 | IMPROVEMENTS IN POTATING CURRENT TRANSMISSION SYSTEMS |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES179920A1 (en) |
-
1947
- 1947-09-27 ES ES0179920A patent/ES179920A1/en not_active Expired
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