FR2388444A1 - Systeme a frequence porteuse dans une installation a deux fils conducteurs, a positions de frequence separees - Google Patents

Systeme a frequence porteuse dans une installation a deux fils conducteurs, a positions de frequence separees

Info

Publication number
FR2388444A1
FR2388444A1 FR7812601A FR7812601A FR2388444A1 FR 2388444 A1 FR2388444 A1 FR 2388444A1 FR 7812601 A FR7812601 A FR 7812601A FR 7812601 A FR7812601 A FR 7812601A FR 2388444 A1 FR2388444 A1 FR 2388444A1
Authority
FR
France
Prior art keywords
wire conductive
carrier frequency
conductive installation
station
positions
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.)
Granted
Application number
FR7812601A
Other languages
English (en)
Other versions
FR2388444B1 (fr
Inventor
Friedrich Siegfried
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.)
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Original Assignee
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
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 Tekade Felten and Guilleaume Fernmeldeanlagen GmbH filed Critical Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Publication of FR2388444A1 publication Critical patent/FR2388444A1/fr
Application granted granted Critical
Publication of FR2388444B1 publication Critical patent/FR2388444B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

Système pour la transmission dans jusqu'à quatre canaux par canalisations symétriques, une fréquence pilote n'étant transmise que dans une direction et exploitée dans une station terminale. Système caractérisé en ce que l'une des stations terminales (poste A) transmet vers l'autre station terminale (poste B) dans un domaine de fréquence de 32 à 48 kHz, et, en direction opposée, dans un domaine de fréquence de 92 à 108 kHz. Disposition applicable dans la technique des télécommunications à câbles multiples.
FR7812601A 1977-04-23 1978-04-18 Systeme a frequence porteuse dans une installation a deux fils conducteurs, a positions de frequence separees Granted FR2388444A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2718232A DE2718232C3 (de) 1977-04-23 1977-04-23 Trägerfrequenzsystem in Zweidraht-Getrenntlage

Publications (2)

Publication Number Publication Date
FR2388444A1 true FR2388444A1 (fr) 1978-11-17
FR2388444B1 FR2388444B1 (fr) 1984-02-17

Family

ID=6007147

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812601A Granted FR2388444A1 (fr) 1977-04-23 1978-04-18 Systeme a frequence porteuse dans une installation a deux fils conducteurs, a positions de frequence separees

Country Status (9)

Country Link
AT (1) AT371644B (fr)
BE (1) BE866217A (fr)
DE (1) DE2718232C3 (fr)
FR (1) FR2388444A1 (fr)
GB (1) GB1580279A (fr)
IE (1) IE46625B1 (fr)
IT (1) IT1094720B (fr)
SE (1) SE431278B (fr)
YU (1) YU95578A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960562A (fr) * 1940-03-29 1950-04-20
DE955608C (de) * 1943-02-12 1957-01-03 Telefunken Gmbh Traegerfrequenzuebertragungssystem
DE1256709B (de) * 1964-08-17 1967-12-21 Standard Elektrik Lorenz Ag Verfahren zur Frequenzstabilisierung der Traeger durch Mituebertragen einer Steuerfrequenz in Traegerfrequenzsystemen
DE2543492A1 (de) * 1975-09-30 1977-03-31 Tekade Felten & Guilleaume Traegerfrequenzsystem in zweidraht-getrenntlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960562A (fr) * 1940-03-29 1950-04-20
DE955608C (de) * 1943-02-12 1957-01-03 Telefunken Gmbh Traegerfrequenzuebertragungssystem
DE1256709B (de) * 1964-08-17 1967-12-21 Standard Elektrik Lorenz Ag Verfahren zur Frequenzstabilisierung der Traeger durch Mituebertragen einer Steuerfrequenz in Traegerfrequenzsystemen
DE2543492A1 (de) * 1975-09-30 1977-03-31 Tekade Felten & Guilleaume Traegerfrequenzsystem in zweidraht-getrenntlage

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *
EXRV/74 *

Also Published As

Publication number Publication date
IT1094720B (it) 1985-08-02
YU95578A (en) 1982-06-30
DE2718232A1 (de) 1978-10-26
IE780795L (en) 1978-10-23
AT371644B (de) 1983-07-11
IE46625B1 (en) 1983-08-10
SE431278B (sv) 1984-01-23
IT7822515A0 (it) 1978-04-20
DE2718232C3 (de) 1981-03-19
SE7804597L (sv) 1978-10-24
GB1580279A (en) 1980-12-03
DE2718232B2 (de) 1980-07-03
BE866217A (fr) 1978-08-14
ATA283278A (de) 1982-11-15
FR2388444B1 (fr) 1984-02-17

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Legal Events

Date Code Title Description
ST Notification of lapse