ES462189A1 - Perfeccionamientos en dispositivos de anulacion del eco parasistemas sincronos por baudios de transmision de informaciondigital. - Google Patents

Perfeccionamientos en dispositivos de anulacion del eco parasistemas sincronos por baudios de transmision de informaciondigital.

Info

Publication number
ES462189A1
ES462189A1 ES462189A ES462189A ES462189A1 ES 462189 A1 ES462189 A1 ES 462189A1 ES 462189 A ES462189 A ES 462189A ES 462189 A ES462189 A ES 462189A ES 462189 A1 ES462189 A1 ES 462189A1
Authority
ES
Spain
Prior art keywords
wire
way data
data transmission
transmission systems
echo cancellation
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
ES462189A
Other languages
English (en)
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 ES462189A1 publication Critical patent/ES462189A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Abstract

Perfeccionamientos en dispositivos de anulación del eco para sistemas sincronos por baudios de transmisión de información digital, que tienen una sección transmisora y una sección receptora para señalización simultánea y bidireccional en toda la anchura de la banda sobre una vía común de la señal, caracterizados porque comprenden en cada uno de tales terminales: medios para muestrar las señales recibidas de entrada a una velocidad prácticamente igual al doble de la frecuencia más elevada empleada en dicha vía de la señal; un elaborador ajustable de la señal para compensar en cuanto a los ecos las señales que son transmitidas por dicha sección transmisora a la sección receptora, que tiene una entrada conectada una fuente de información en la sección de transmisión y una salida combinada en relación substractiva con la señal de salida de los primeros medios de muestreo, almacenando el elaborador de las señales muestras consecutivas de señales procedentes de la fuente de información a intervalos no superiores a la inversa del doble de la más alta frecuencia empleada en la vía de la señal, y de forma que en cada intervalo de baudios ocurra un número entero de tales intervalos de muestreo; medios dentro del elaborador de señales para comparar las muestras consecutivas con la salida substractiva del mismo; y medios para recuperar la información digital de la salida substractiva del elaborador de señales.
ES462189A 1976-09-07 1977-09-07 Perfeccionamientos en dispositivos de anulacion del eco parasistemas sincronos por baudios de transmision de informaciondigital. Expired ES462189A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72103276A 1976-09-07 1976-09-07

Publications (1)

Publication Number Publication Date
ES462189A1 true ES462189A1 (es) 1978-12-16

Family

ID=24896239

Family Applications (1)

Application Number Title Priority Date Filing Date
ES462189A Expired ES462189A1 (es) 1976-09-07 1977-09-07 Perfeccionamientos en dispositivos de anulacion del eco parasistemas sincronos por baudios de transmision de informaciondigital.

Country Status (11)

Country Link
US (1) US4131767A (es)
JP (1) JPS5923497B2 (es)
BE (1) BE858375A (es)
CA (1) CA1112383A (es)
DE (1) DE2740123C2 (es)
ES (1) ES462189A1 (es)
FR (1) FR2363945A1 (es)
GB (1) GB1585395A (es)
IT (1) IT1086459B (es)
NL (1) NL186671C (es)
SE (1) SE416367B (es)

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Also Published As

Publication number Publication date
GB1585395A (en) 1981-03-04
SE7709560L (sv) 1978-03-08
NL186671B (nl) 1990-08-16
DE2740123C2 (de) 1985-04-04
IT1086459B (it) 1985-05-28
NL7709795A (nl) 1978-03-09
NL186671C (nl) 1991-01-16
FR2363945B1 (es) 1981-07-10
US4131767A (en) 1978-12-26
BE858375A (fr) 1978-01-02
SE416367B (sv) 1980-12-15
JPS5923497B2 (ja) 1984-06-02
JPS5334407A (en) 1978-03-31
FR2363945A1 (fr) 1978-03-31
CA1112383A (en) 1981-11-10
DE2740123A1 (de) 1978-03-09

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