FR2446570A1 - Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence - Google Patents

Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence

Info

Publication number
FR2446570A1
FR2446570A1 FR7900383A FR7900383A FR2446570A1 FR 2446570 A1 FR2446570 A1 FR 2446570A1 FR 7900383 A FR7900383 A FR 7900383A FR 7900383 A FR7900383 A FR 7900383A FR 2446570 A1 FR2446570 A1 FR 2446570A1
Authority
FR
France
Prior art keywords
digital signal
low frequency
frequency wave
simultaneous transmission
additional information
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
FR7900383A
Other languages
English (en)
Other versions
FR2446570B1 (fr
Inventor
Patrick Emile Boutmy
Gilbert Jean Le Fot
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Priority to FR7900383A priority Critical patent/FR2446570A1/fr
Priority to GB7927730A priority patent/GB2039447B/en
Priority to CH3280A priority patent/CH640678A5/fr
Priority to CA000343230A priority patent/CA1137581A/fr
Priority to BE0/198905A priority patent/BE881066A/fr
Priority to DE3000941A priority patent/DE3000941C2/de
Priority to IT84103/80A priority patent/IT1154951B/it
Publication of FR2446570A1 publication Critical patent/FR2446570A1/fr
Application granted granted Critical
Publication of FR2446570B1 publication Critical patent/FR2446570B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dc Digital Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

La présente invention est relative à un procédé permettant la transmission simultanée d'un signal numerique et d'une information supplémentaire et dispositif de mise en oeuvre. Selon le procédé de l'invention on module la parité des états << Z >> du signal numérique par une onde basse fréquence porteuse de l'information supplémentaire à transmettre. Pour ce faire, on utilise soit une adjonction de bits supplémentaires soit une forme particulière de codage nBmT dont on utilise la redondance. Dans ce cas le dispositif de transcodage 57 est commandé par l'intermédiaire d'un détecteur de parite 60 et un dispositif de comparaison 63 entre les parites existante et désirée pour les états << Z >>. L'invention qui permet la transmission d'une information supplémentaire est particulièrement destinée aux transmissions téléphoniques numériques.
FR7900383A 1979-01-09 1979-01-09 Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence Granted FR2446570A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7900383A FR2446570A1 (fr) 1979-01-09 1979-01-09 Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence
GB7927730A GB2039447B (en) 1979-01-09 1979-08-09 Low-frequency supplementary information transmitting arrangement for a digital data transmission system
CH3280A CH640678A5 (fr) 1979-01-09 1980-01-04 Procede et installation de transmission simultanee d'une onde basse frequence et d'un signal numerique mic.
CA000343230A CA1137581A (fr) 1979-01-09 1980-01-08 Dispositif de transmission d'information supplementaire constituee d'ondes a basse frequence pour systeme de transmission de donnees numeriques
BE0/198905A BE881066A (fr) 1979-01-09 1980-01-09 Procede et dispositif permettant la transmission simultanee d'une onde basse frequence et d'un signal numerique
DE3000941A DE3000941C2 (de) 1979-01-09 1980-01-09 Anordnung zur Übertragung zusätzlicher Informationen für eine Einrichtung zur Übertragung digitaler Daten
IT84103/80A IT1154951B (it) 1979-01-09 1980-01-09 Dispositivo per trasmettere un'informazione supplementare a bassa frequenza in un sistema digitale di trasmissione dati

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7900383A FR2446570A1 (fr) 1979-01-09 1979-01-09 Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence

Publications (2)

Publication Number Publication Date
FR2446570A1 true FR2446570A1 (fr) 1980-08-08
FR2446570B1 FR2446570B1 (fr) 1981-09-18

Family

ID=9220547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7900383A Granted FR2446570A1 (fr) 1979-01-09 1979-01-09 Procede et dispositif permettant la transmission simultanee d'un signal numerique et d'une onde basse frequence

Country Status (7)

Country Link
BE (1) BE881066A (fr)
CA (1) CA1137581A (fr)
CH (1) CH640678A5 (fr)
DE (1) DE3000941C2 (fr)
FR (1) FR2446570A1 (fr)
GB (1) GB2039447B (fr)
IT (1) IT1154951B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037556B1 (fr) * 1980-04-04 1984-03-21 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Procédé et appareil pour la synchronisation de trame d'un signal d'information supplémentaire dans une transmission par répartition de niveau

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393493A (en) * 1980-11-10 1983-07-12 International Telephone And Telegraph Corporation Automatic protection apparatus for span lines employed in high speed digital systems
DE3042612A1 (de) * 1980-11-12 1982-06-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Uebertragungsverfahren fuer digitale signale
GB2146875A (en) * 1983-09-09 1985-04-24 Racal Res Ltd Communications systems
DE3401729C2 (de) * 1984-01-19 1987-04-23 ANT Nachrichtentechnik GmbH, 7150 Backnang Digitales Datenübertragungsverfahren mit Übertragung zusätzlicher Informationen
DE3431423A1 (de) * 1984-08-27 1986-03-06 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren zur uebertragung von digitalen informationen auf anschlussleitungen von fernmelde-, insbesondere fernsprechvermittlungsanlagen
GB8511804D0 (en) * 1985-05-09 1985-06-19 British Broadcasting Corp Digital data transmission
DE3530546A1 (de) * 1985-08-27 1987-03-19 Ant Nachrichtentech Uebertragungsverfahren fuer schnellen und langsamen datenstrom
DE3806411C2 (de) * 1988-02-29 1996-05-30 Thomson Brandt Gmbh Verfahren zur Übertragung eines Tonsignals und eines Zusatzsignals
DE3808829A1 (de) * 1988-03-14 1989-09-28 Deutsche Telephonwerk Kabel Verfahren zur datenuebertragung auf leitungen eines diensteintegrierenden digitalen nachrichtennetzes
GB2243056B (en) * 1990-04-11 1994-03-30 Stc Plc Repeater supervision
JPH0746224A (ja) * 1992-10-09 1995-02-14 Philips Electron Nv 送信システム及び受信機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631471A (en) * 1968-12-13 1971-12-28 Post Office Low disparity binary codes
US3671959A (en) * 1969-01-24 1972-06-20 Kokusai Denshin Denwa Co Ltd Binary to ternary converter
FR2329109A1 (fr) * 1975-10-23 1977-05-20 Int Standard Electric Corp Systeme de transmission de donnees en modulation par impulsions et codage
FR2367383A1 (fr) * 1976-10-08 1978-05-05 Int Standard Electric Corp Dispositif et methode pour la detection des erreurs dans les systemes de transmission numerique
US4092595A (en) * 1975-12-30 1978-05-30 International Standard Electric Corporation Data transmission system for transmitting primary and secondary intelligence
GB1536337A (en) * 1976-06-02 1978-12-20 Standard Telephones Cables Ltd Error detection in digital systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512303B1 (de) * 1975-03-20 1976-07-08 Siemens Ag Schaltungsanordnung zur empfangsseitigen stopschrittverlaengerung bei der zeichenrahmen-gebundenen zeitmultiplex-uebertragung von daten
CH621445A5 (fr) * 1976-09-09 1981-01-30 Gretag Ag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631471A (en) * 1968-12-13 1971-12-28 Post Office Low disparity binary codes
US3671959A (en) * 1969-01-24 1972-06-20 Kokusai Denshin Denwa Co Ltd Binary to ternary converter
FR2329109A1 (fr) * 1975-10-23 1977-05-20 Int Standard Electric Corp Systeme de transmission de donnees en modulation par impulsions et codage
US4092595A (en) * 1975-12-30 1978-05-30 International Standard Electric Corporation Data transmission system for transmitting primary and secondary intelligence
GB1536337A (en) * 1976-06-02 1978-12-20 Standard Telephones Cables Ltd Error detection in digital systems
FR2367383A1 (fr) * 1976-10-08 1978-05-05 Int Standard Electric Corp Dispositif et methode pour la detection des erreurs dans les systemes de transmission numerique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037556B1 (fr) * 1980-04-04 1984-03-21 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Procédé et appareil pour la synchronisation de trame d'un signal d'information supplémentaire dans une transmission par répartition de niveau

Also Published As

Publication number Publication date
DE3000941A1 (de) 1980-07-17
FR2446570B1 (fr) 1981-09-18
GB2039447B (en) 1983-07-27
DE3000941C2 (de) 1985-09-26
CH640678A5 (fr) 1984-01-13
CA1137581A (fr) 1982-12-14
IT1154951B (it) 1987-01-21
BE881066A (fr) 1980-05-02
GB2039447A (en) 1980-08-06
IT8084103A0 (it) 1980-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse