ES181579A1 - A SYSTEM OF SIGNALS - Google Patents
A SYSTEM OF SIGNALSInfo
- Publication number
- ES181579A1 ES181579A1 ES0181579A ES181579A ES181579A1 ES 181579 A1 ES181579 A1 ES 181579A1 ES 0181579 A ES0181579 A ES 0181579A ES 181579 A ES181579 A ES 181579A ES 181579 A1 ES181579 A1 ES 181579A1
- Authority
- ES
- Spain
- Prior art keywords
- signal
- current
- particular frequency
- amplitude
- greater amplitude
- 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
- Dc Digital Transmission (AREA)
Abstract
Un sistema de señales que comprende un primer elemento normalmente apto para transmitir corriente de una particular frecuencia y amplitud por una línea libre cono señal de inactividad, y medios para terminar la transmisión normal de dicha corriente como señal de captación, caracterizado por un segundo elemento para transmitir impulsos de corriente de la particular frecuencia, pero de mayor amplitud, como señales de selección o intervención, y un tercer elemento para transmitir corriente de la misma frecuencia y mayor amplitud durante cierto lapso, como señal de desconectar.A signal system comprising a first element normally capable of transmitting current of a particular frequency and amplitude through a free line as an inactivity signal, and means for terminating the normal transmission of said current as a pick-up signal, characterized by a second element for transmit current pulses of the particular frequency, but of greater amplitude, as selection or intervention signals, and a third element to transmit current of the same frequency and greater amplitude during a certain period, as a disconnect signal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US181579XA | 1945-06-15 | 1945-06-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES181579A1 true ES181579A1 (en) | 1948-02-16 |
Family
ID=38463575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0181579A Expired ES181579A1 (en) | 1945-06-15 | 1947-01-29 | A SYSTEM OF SIGNALS |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES181579A1 (en) |
-
1947
- 1947-01-29 ES ES0181579A patent/ES181579A1/en not_active Expired
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