ES8200802A1 - Instalacion para la transmision de senales de mando a travesde un canal vocal - Google Patents

Instalacion para la transmision de senales de mando a travesde un canal vocal

Info

Publication number
ES8200802A1
ES8200802A1 ES496115A ES496115A ES8200802A1 ES 8200802 A1 ES8200802 A1 ES 8200802A1 ES 496115 A ES496115 A ES 496115A ES 496115 A ES496115 A ES 496115A ES 8200802 A1 ES8200802 A1 ES 8200802A1
Authority
ES
Spain
Prior art keywords
telephone
encoding devices
lay
control signals
signals via
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
ES496115A
Other languages
English (en)
Other versions
ES496115A0 (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.)
CRYPTO AG
Original Assignee
CRYPTO AG
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 CRYPTO AG filed Critical CRYPTO AG
Publication of ES8200802A1 publication Critical patent/ES8200802A1/es
Publication of ES496115A0 publication Critical patent/ES496115A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Transmitters (AREA)

Abstract

INSTALACION PARA LA TRANSMISION DE SEÑALES DE AUDIOFRECUENCIA A TRAVES DE UN CANAL VOCAL, ENTRE ESTACIONES EMISORAS-RECEPTORAS, QUE HACE POSIBLE UN FUNCIONAMIENTO SECRETO. LA INSTALACION CONSTA DE UN CONJUNTO DE ESTACIONES EMISORAS-RECEPTORAS (1, 10), UNA INSTALACION RADIOFONICA FIJA (9), EN LA QUE CONECTA UN ANALIZADOR DE SEÑALES DE AUDIOFRECUENCIA (22), Y APARATOS CODIFICADORES (18, 19). PARA PRODUCIR INFORMACION SE CONECTAN EN LAS ESTACIONES (1, 10) GENERADORES DE SEÑAL DE AUDIOFRECUENCIA (24, 29). SISE DESEA PASAR INFORMACION DE UNA ESTACION FIJA (1) A LA MOVIL (10), EL GENERADOR (24) EMITE SOBRE LA CENTRAL (4) Y EL DETECTOR (22), QUE RECIBE INFORMACION DE DICHA CENTRAL (4) Y DEL RECEPTOR (9A), CONMUTA A FUNCIONAMIENTO SECRETO. DE APLICACION PARATRANSMISION DE DATOS.
ES496115A 1979-11-07 1980-10-21 Instalacion para la transmision de senales de mando a travesde un canal vocal Granted ES496115A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH997679 1979-11-07

Publications (2)

Publication Number Publication Date
ES8200802A1 true ES8200802A1 (es) 1981-11-16
ES496115A0 ES496115A0 (es) 1981-11-16

Family

ID=4357749

Family Applications (1)

Application Number Title Priority Date Filing Date
ES496115A Granted ES496115A0 (es) 1979-11-07 1980-10-21 Instalacion para la transmision de senales de mando a travesde un canal vocal

Country Status (7)

Country Link
EP (1) EP0028688A1 (es)
JP (1) JPS5676646A (es)
AR (1) AR224912A1 (es)
BR (1) BR8007222A (es)
ES (1) ES496115A0 (es)
NO (1) NO803344L (es)
ZA (1) ZA806589B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154961A (ja) * 1982-03-10 1983-09-14 Fujitsu Ltd 秘匿通話方法
JPS5961242A (ja) * 1982-09-30 1984-04-07 Fujitsu Ltd 秘匿通信システム
US4815128A (en) * 1986-07-03 1989-03-21 Motorola, Inc. Gateway system and method for interconnecting telephone calls with a digital voice protected radio network
EP0313029A1 (de) * 1987-10-21 1989-04-26 Siemens Aktiengesellschaft Österreich Vorrichtung zur verschleierten Übertragung analoger Signale

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542183A (en) * 1948-07-10 1951-02-20 Bell Telephone Labor Inc Transmission privacy synchronizing and equalizing system
GB1051791A (es) * 1964-01-09 1900-01-01

Also Published As

Publication number Publication date
EP0028688A1 (de) 1981-05-20
JPS5676646A (en) 1981-06-24
ES496115A0 (es) 1981-11-16
NO803344L (no) 1981-05-08
ZA806589B (en) 1981-10-28
BR8007222A (pt) 1981-05-19
AR224912A1 (es) 1982-01-29

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