ES458606A1 - Un metodo y un aparato para extraer informaciones de tempo- rizacion de una senal portadora modulada con simbolos digitales. - Google Patents

Un metodo y un aparato para extraer informaciones de tempo- rizacion de una senal portadora modulada con simbolos digitales.

Info

Publication number
ES458606A1
ES458606A1 ES458606A ES458606A ES458606A1 ES 458606 A1 ES458606 A1 ES 458606A1 ES 458606 A ES458606 A ES 458606A ES 458606 A ES458606 A ES 458606A ES 458606 A1 ES458606 A1 ES 458606A1
Authority
ES
Spain
Prior art keywords
timing information
modulated carrier
extracting timing
carrier
signal
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
ES458606A
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.)
Schlumberger Technology Corp
Original Assignee
Schlumberger Technology Corp
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 Schlumberger Technology Corp filed Critical Schlumberger Technology Corp
Publication of ES458606A1 publication Critical patent/ES458606A1/es
Expired 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • E21B47/20—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by modulation of mud waves, e.g. by continuous modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geophysics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Fluid Mechanics (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

Un método para extraer informaciones de temporización de una señal portadora modulada con símbolos digitales, estando relacionada la velocidad de los símbolos con la frecuencia del portador, donde un circuito de bloqueo de fase genera una señal de error e incluye un oscilador sensible a dicha señal de error.
ES458606A 1976-05-10 1977-05-09 Un metodo y un aparato para extraer informaciones de tempo- rizacion de una senal portadora modulada con simbolos digitales. Expired ES458606A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68460476A 1976-05-10 1976-05-10

Publications (1)

Publication Number Publication Date
ES458606A1 true ES458606A1 (es) 1978-08-01

Family

ID=24748755

Family Applications (1)

Application Number Title Priority Date Filing Date
ES458606A Expired ES458606A1 (es) 1976-05-10 1977-05-09 Un metodo y un aparato para extraer informaciones de tempo- rizacion de una senal portadora modulada con simbolos digitales.

Country Status (15)

Country Link
AR (1) AR222004A1 (es)
AU (1) AU513642B2 (es)
BR (1) BR7702901A (es)
CA (1) CA1119686A (es)
DE (1) DE2721023A1 (es)
EG (1) EG13329A (es)
ES (1) ES458606A1 (es)
FR (1) FR2351549A1 (es)
GB (1) GB1579488A (es)
GR (1) GR63199B (es)
IE (1) IE45139B1 (es)
IT (1) IT1101653B (es)
NL (1) NL7705119A (es)
NO (1) NO771514L (es)
OA (1) OA05657A (es)

Also Published As

Publication number Publication date
GR63199B (en) 1979-10-04
NO771514L (no) 1977-11-08
OA05657A (fr) 1981-04-30
IE45139L (en) 1977-11-10
DE2721023A1 (de) 1977-12-01
FR2351549A1 (fr) 1977-12-09
FR2351549B1 (es) 1980-02-15
AR222004A1 (es) 1981-04-15
AU2486077A (en) 1978-11-09
IT1101653B (it) 1985-10-07
CA1119686A (en) 1982-03-09
EG13329A (en) 1981-06-30
AU513642B2 (en) 1980-12-11
IE45139B1 (en) 1982-06-30
GB1579488A (en) 1980-11-19
NL7705119A (nl) 1977-11-14
BR7702901A (pt) 1978-05-16

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19981103