BR7702901A - SYSTEM FOR EXTRACTION OF TIMING INFORMATION FROM A MODULATED CARRIER WAVE - Google Patents
SYSTEM FOR EXTRACTION OF TIMING INFORMATION FROM A MODULATED CARRIER WAVEInfo
- Publication number
- BR7702901A BR7702901A BR7702901A BR7702901A BR7702901A BR 7702901 A BR7702901 A BR 7702901A BR 7702901 A BR7702901 A BR 7702901A BR 7702901 A BR7702901 A BR 7702901A BR 7702901 A BR7702901 A BR 7702901A
- Authority
- BR
- Brazil
- Prior art keywords
- extraction
- carrier wave
- timing information
- modulated carrier
- modulated
- Prior art date
Links
- 238000000605 extraction Methods 0.000 title 1
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)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Fluid Mechanics (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Geophysics (AREA)
- Geochemistry & Mineralogy (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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68460476A | 1976-05-10 | 1976-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7702901A true BR7702901A (en) | 1978-05-16 |
Family
ID=24748755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7702901A BR7702901A (en) | 1976-05-10 | 1977-05-05 | SYSTEM FOR EXTRACTION OF TIMING INFORMATION FROM A MODULATED CARRIER WAVE |
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) |
-
1977
- 1977-04-28 IE IE860/77A patent/IE45139B1/en unknown
- 1977-04-29 NO NO771514A patent/NO771514L/en unknown
- 1977-05-04 FR FR7713487A patent/FR2351549A1/en active Granted
- 1977-05-04 AU AU24860/77A patent/AU513642B2/en not_active Expired
- 1977-05-05 BR BR7702901A patent/BR7702901A/en unknown
- 1977-05-06 IT IT23295/77A patent/IT1101653B/en active
- 1977-05-07 EG EG267/77A patent/EG13329A/en active
- 1977-05-09 AR AR267532A patent/AR222004A1/en active
- 1977-05-09 GB GB19325/77A patent/GB1579488A/en not_active Expired
- 1977-05-09 ES ES458606A patent/ES458606A1/en not_active Expired
- 1977-05-09 CA CA000277997A patent/CA1119686A/en not_active Expired
- 1977-05-10 NL NL7705119A patent/NL7705119A/en not_active Application Discontinuation
- 1977-05-10 GR GR53425A patent/GR63199B/en unknown
- 1977-05-10 OA OA56165A patent/OA05657A/en unknown
- 1977-05-10 DE DE19772721023 patent/DE2721023A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CA1119686A (en) | 1982-03-09 |
EG13329A (en) | 1981-06-30 |
AU513642B2 (en) | 1980-12-11 |
GR63199B (en) | 1979-10-04 |
DE2721023A1 (en) | 1977-12-01 |
ES458606A1 (en) | 1978-08-01 |
IT1101653B (en) | 1985-10-07 |
FR2351549A1 (en) | 1977-12-09 |
IE45139L (en) | 1977-11-10 |
AR222004A1 (en) | 1981-04-15 |
IE45139B1 (en) | 1982-06-30 |
AU2486077A (en) | 1978-11-09 |
GB1579488A (en) | 1980-11-19 |
NL7705119A (en) | 1977-11-14 |
FR2351549B1 (en) | 1980-02-15 |
OA05657A (en) | 1981-04-30 |
NO771514L (en) | 1977-11-08 |
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