ES181579A1 - A SYSTEM OF SIGNALS - Google Patents

A SYSTEM OF SIGNALS

Info

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
Application number
ES0181579A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES181579A1 publication Critical patent/ES181579A1/en
Expired legal-status Critical Current

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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.

ES0181579A 1945-06-15 1947-01-29 A SYSTEM OF SIGNALS Expired ES181579A1 (en)

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)

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