ES161405A2 - - Google Patents

Info

Publication number
ES161405A2
ES161405A2 ES0161405A ES161405A ES161405A2 ES 161405 A2 ES161405 A2 ES 161405A2 ES 0161405 A ES0161405 A ES 0161405A ES 161405 A ES161405 A ES 161405A ES 161405 A2 ES161405 A2 ES 161405A2
Authority
ES
Spain
Prior art keywords
signaling elements
frequency
current
alternating
constant number
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
Application number
ES0161405A
Other languages
Spanish (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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Priority to ES0161405A priority Critical patent/ES161405A2/es
Publication of ES161405A2 publication Critical patent/ES161405A2/es
Expired legal-status Critical Current

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  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Un sistema eléctrico de señalización usando una línea de transmisión, para la transmisión, por medio de corriente alterna, de señales que contienen un número constante de elementos de señalización, usándose corrientes alternas de diferentes frecuencias, a saber; una corriente alterna (frecuencia f1) para señalar el número constante de elementos de señalización y la duración de cada uno, y una segunda o más corrientes alternas (frecuencia f2, f3, etc.) para señalar los elementos de señalización como tales. (P.e. el cierre o apertura de la corriente).An electrical signaling system using a transmission line, for the transmission, by means of alternating current, of signals containing a constant number of signaling elements, using alternating currents of different frequencies, namely; an alternating current (frequency f1) to indicate the constant number of signaling elements and the duration of each, and a second or more alternating currents (frequency f2, f3, etc.) to signal the signaling elements as such. (For example, the closing or opening of the current).

ES0161405A 1943-05-05 1943-05-05 Expired ES161405A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0161405A ES161405A2 (en) 1943-05-05 1943-05-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES0161405A ES161405A2 (en) 1943-05-05 1943-05-05

Publications (1)

Publication Number Publication Date
ES161405A2 true ES161405A2 (en) 1943-12-01

Family

ID=38425829

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0161405A Expired ES161405A2 (en) 1943-05-05 1943-05-05

Country Status (1)

Country Link
ES (1) ES161405A2 (en)

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