FR2435862A1 - Disposition de circuit pour la production d'impulsions d'echantillonnage applicable particulierement a la station receptrice d'un systeme pour la transmission de donnees - Google Patents

Disposition de circuit pour la production d'impulsions d'echantillonnage applicable particulierement a la station receptrice d'un systeme pour la transmission de donnees

Info

Publication number
FR2435862A1
FR2435862A1 FR7921148A FR7921148A FR2435862A1 FR 2435862 A1 FR2435862 A1 FR 2435862A1 FR 7921148 A FR7921148 A FR 7921148A FR 7921148 A FR7921148 A FR 7921148A FR 2435862 A1 FR2435862 A1 FR 2435862A1
Authority
FR
France
Prior art keywords
sequence
production
data transmission
circuit arrangement
pulses
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.)
Withdrawn
Application number
FR7921148A
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.)
ITALIANA TELECOMUNICAZ
Original Assignee
ITALIANA TELECOMUNICAZ
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 ITALIANA TELECOMUNICAZ filed Critical ITALIANA TELECOMUNICAZ
Publication of FR2435862A1 publication Critical patent/FR2435862A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)

Abstract

Circuit pour la production d'impulsions d'échantillonnage comportant une unité de rythme permettant une première séquence d'impulsions de fréquence coïncidant avec celle du signal porteur et retardée de 1/4 de période. Il comprend une unité RF qui comporte des premiers moyens produisant une deuxième séquence d'impulsions de période coïncidant avec celle du signal de présynchronisme et de phase retardée par rapport à ce dernier, ainsi qu'une troisième séquence ayant une période égale à celle de la deuxième séquence et déphasée de 180 degrés par rapport à celle-ci, et des deuxièmes moyens SM provoquant une inversion de phase de 180 degrés de la première séquence quant à la hauteur des fronts de montée des deuxième et troisième séquences d'impulsions le signal produit par l'unité de rythme UT présente la valeur logique << un >>.
FR7921148A 1978-09-08 1979-08-22 Disposition de circuit pour la production d'impulsions d'echantillonnage applicable particulierement a la station receptrice d'un systeme pour la transmission de donnees Withdrawn FR2435862A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT27455/78A IT1174392B (it) 1978-09-08 1978-09-08 Disposizione circuitale per la generazione degli impulsi di campiona,ento di un sistema per la trasmissione di dati

Publications (1)

Publication Number Publication Date
FR2435862A1 true FR2435862A1 (fr) 1980-04-04

Family

ID=11221677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921148A Withdrawn FR2435862A1 (fr) 1978-09-08 1979-08-22 Disposition de circuit pour la production d'impulsions d'echantillonnage applicable particulierement a la station receptrice d'un systeme pour la transmission de donnees

Country Status (6)

Country Link
US (1) US4266198A (fr)
BR (1) BR7905680A (fr)
DE (1) DE2936508A1 (fr)
FR (1) FR2435862A1 (fr)
GB (1) GB2030426B (fr)
IT (1) IT1174392B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344038A (en) * 1980-05-27 1982-08-10 The Magnavox Company Low frequency tone detector
US4517680A (en) * 1983-02-23 1985-05-14 Paradyne Corporation Error vector normalizer
US5023891A (en) * 1989-07-25 1991-06-11 Sf2 Corporation Method and circuit for decoding a Manchester code signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982195A (en) * 1975-05-29 1976-09-21 Teletype Corporation Method and apparatus for decoding diphase signals
FR2313827A1 (fr) * 1975-06-02 1976-12-31 Materiel Telephonique Systeme de transmission de suites d'elements binaires
FR2361024A1 (fr) * 1976-08-04 1978-03-03 Cit Alcatel Procede de codage par transitions d'informations binaires et dispositifs de codage et de decodage correspondants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL154897B (nl) * 1969-06-07 1977-10-17 Philips Nv Ontvanger met n-waardige fasedemodulator.
FR2292380A1 (fr) * 1974-11-25 1976-06-18 Cit Alcatel Dispositif numerique de reconnaissance d'un message nrz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982195A (en) * 1975-05-29 1976-09-21 Teletype Corporation Method and apparatus for decoding diphase signals
FR2313827A1 (fr) * 1975-06-02 1976-12-31 Materiel Telephonique Systeme de transmission de suites d'elements binaires
FR2361024A1 (fr) * 1976-08-04 1978-03-03 Cit Alcatel Procede de codage par transitions d'informations binaires et dispositifs de codage et de decodage correspondants

Also Published As

Publication number Publication date
GB2030426B (en) 1982-09-29
BR7905680A (pt) 1980-05-13
GB2030426A (en) 1980-04-02
US4266198A (en) 1981-05-05
DE2936508A1 (de) 1980-03-20
IT7827455A0 (it) 1978-09-08
IT1174392B (it) 1987-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse