IE45139L - Extraction of timing information from digital signalling¹systems - Google Patents

Extraction of timing information from digital signalling¹systems

Info

Publication number
IE45139L
IE45139L IE770860A IE86077A IE45139L IE 45139 L IE45139 L IE 45139L IE 770860 A IE770860 A IE 770860A IE 86077 A IE86077 A IE 86077A IE 45139 L IE45139 L IE 45139L
Authority
IE
Ireland
Prior art keywords
symbol
carrier
digital
extraction
timing information
Prior art date
Application number
IE770860A
Other versions
IE45139B1 (en
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 IE45139L publication Critical patent/IE45139L/en
Publication of IE45139B1 publication Critical patent/IE45139B1/en

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)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Communication Control (AREA)

Abstract

The disclosure relates to a technique for receiving a carrier signal modulated with digital symbols, the symbol rate being related to the carrier frequency, such as by a submultiple or a ratio of integers. An adaptive carrier-aided symbol tracking loop is provided in which signals derived from a symbol-coherent carrier maintain and aid symbol synchronization during periods of no symbol transitions. [CA1119686A]
IE860/77A 1976-05-10 1977-04-28 System for extracting timing information from a modulated carrier IE45139B1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IE45139L true IE45139L (en) 1977-11-10
IE45139B1 IE45139B1 (en) 1982-06-30

Family

ID=24748755

Family Applications (1)

Application Number Title Priority Date Filing Date
IE860/77A IE45139B1 (en) 1976-05-10 1977-04-28 System for extracting timing information from a modulated carrier

Country Status (15)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220200750A1 (en) * 2020-12-17 2022-06-23 Intel Corporation Closed-loop baud rate carrier and carrier frequency tuning for wireless chip-to-chip interface

Also Published As

Publication number Publication date
AU513642B2 (en) 1980-12-11
IE45139B1 (en) 1982-06-30
FR2351549A1 (en) 1977-12-09
AR222004A1 (en) 1981-04-15
NO771514L (en) 1977-11-08
OA05657A (en) 1981-04-30
IT1101653B (en) 1985-10-07
GR63199B (en) 1979-10-04
AU2486077A (en) 1978-11-09
ES458606A1 (en) 1978-08-01
DE2721023A1 (en) 1977-12-01
EG13329A (en) 1981-06-30
CA1119686A (en) 1982-03-09
BR7702901A (en) 1978-05-16
FR2351549B1 (en) 1980-02-15
GB1579488A (en) 1980-11-19
NL7705119A (en) 1977-11-14

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