CA945248A - Systeme de transmission synchrone d'informations a faible taux d'erreur, notamment pour la prospection sismique - Google Patents

Systeme de transmission synchrone d'informations a faible taux d'erreur, notamment pour la prospection sismique

Info

Publication number
CA945248A
CA945248A CA120,444*7A CA120444A CA945248A CA 945248 A CA945248 A CA 945248A CA 120444 A CA120444 A CA 120444A CA 945248 A CA945248 A CA 945248A
Authority
CA
Canada
Prior art keywords
synchrone
erreur
systeme
informations
transmission
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
CA120,444*7A
Other languages
English (en)
Other versions
CA120444S (en
Inventor
Philippe Staron
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.)
CGG SA
Original Assignee
Compagnie Generale de Geophysique SA
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 Compagnie Generale de Geophysique SA filed Critical Compagnie Generale de Geophysique SA
Application granted granted Critical
Publication of CA945248A publication Critical patent/CA945248A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/22—Transmitting seismic signals to recording or processing apparatus
    • G01V1/223—Radioseismic systems
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • H04L27/2278—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using correlation techniques, e.g. for spread spectrum signals
    • 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
    • H04L7/043—Pseudo-noise [PN] codes variable during transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Mobile Radio Communication Systems (AREA)
CA120,444*7A 1970-08-25 1971-08-12 Systeme de transmission synchrone d'informations a faible taux d'erreur, notamment pour la prospection sismique Expired CA945248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7031056A FR2102838A5 (fr) 1970-08-25 1970-08-25

Publications (1)

Publication Number Publication Date
CA945248A true CA945248A (en) 1974-04-09

Family

ID=9060552

Family Applications (1)

Application Number Title Priority Date Filing Date
CA120,444*7A Expired CA945248A (en) 1970-08-25 1971-08-12 Systeme de transmission synchrone d'informations a faible taux d'erreur, notamment pour la prospection sismique

Country Status (4)

Country Link
US (1) US3794978A (fr)
CA (1) CA945248A (fr)
FR (1) FR2102838A5 (fr)
OA (1) OA03751A (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248517B1 (fr) * 1973-10-23 1978-08-04 Sercel Rech Const Elect
FR2249509A1 (en) * 1973-10-29 1975-05-23 Trt Telecom Radio Electr Frequency modulation and differential phase demodulation system - provides signal with zero spectrum at zero frequency
US3987406A (en) * 1975-08-27 1976-10-19 Standard Oil Company (Indiana) Seismic group recorder control system
US4241398A (en) * 1978-09-29 1980-12-23 United Technologies Corporation Computer network, line protocol system
US4493063A (en) * 1978-10-30 1985-01-08 Phillips Petroleum Company Method and apparatus for seismic geophysical exploration
FR2538194B1 (fr) * 1982-12-16 1985-10-11 Inst Francais Du Petrole Methode pour la commande a distance d'appareils d'acquisition de signaux au moyen d'une voie de transmission a bande passante etroite et dispositif pour sa mise en oeuvre
IN161261B (fr) * 1983-07-08 1987-10-31 Decca Ltd
US4839644A (en) * 1987-06-10 1989-06-13 Schlumberger Technology Corp. System and method for communicating signals in a cased borehole having tubing
US7460876B2 (en) * 2002-12-30 2008-12-02 Intel Corporation System and method for intelligent transmitted power control scheme
EP2677346A1 (fr) * 2012-06-19 2013-12-25 Sercel Capteur sismique digital et dispositif d'acquisition adaptés à la connexion avec une ligne à deux conducteurs.
US8941484B2 (en) * 2013-03-13 2015-01-27 Honeywell International Inc. System and method of anomaly detection
US20150153466A1 (en) * 2013-12-04 2015-06-04 Westerngeco L.L.C. Source Start Time Determination
EP3562111B1 (fr) * 2018-04-24 2021-10-20 Nxp B.V. Synchronisation de bits pour la communication par touche marche/arrêt (ook)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380023A (en) * 1964-01-21 1968-04-23 Motorola Inc Electronic alarm system
US3440346A (en) * 1965-11-24 1969-04-22 Harold A Norby Method of multiplex representation of sampled data
US3550082A (en) * 1966-03-17 1970-12-22 Bell Telephone Labor Inc Automatic synchronization recovery techniques for nonbinary cyclic codes
US3496536A (en) * 1966-05-02 1970-02-17 Xerox Corp Data link test apparatus
US3491202A (en) * 1966-09-30 1970-01-20 James W Bailey Bi-polar phase detector and corrector for split phase pcm data signals
US3510585A (en) * 1967-02-02 1970-05-05 Xerox Corp Multi-level data encoder-decoder with pseudo-random test pattern generation capability
US3479458A (en) * 1967-03-06 1969-11-18 Honeywell Inc Automatic channel equalization apparatus
US3524169A (en) * 1967-06-05 1970-08-11 North American Rockwell Impulse response correction system
US3571794A (en) * 1967-09-27 1971-03-23 Bell Telephone Labor Inc Automatic synchronization recovery for data systems utilizing burst-error-correcting cyclic codes
US3562710A (en) * 1968-04-24 1971-02-09 Ball Brothers Res Corp Bit error detector for digital communication system
US3648237A (en) * 1969-02-28 1972-03-07 Ibm Apparatus and method for obtaining synchronization of a maximum length pseudorandom sequence

Also Published As

Publication number Publication date
OA03751A (fr) 1971-12-24
US3794978A (en) 1974-02-26
FR2102838A5 (fr) 1972-04-07

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 19910409