FR2377045A1 - Multiplexage d'emetteurs-recepteurs pour ensemble de recueil de donnees sismiques. - Google Patents
Multiplexage d'emetteurs-recepteurs pour ensemble de recueil de donnees sismiques.Info
- Publication number
- FR2377045A1 FR2377045A1 FR7807018A FR7807018A FR2377045A1 FR 2377045 A1 FR2377045 A1 FR 2377045A1 FR 7807018 A FR7807018 A FR 7807018A FR 7807018 A FR7807018 A FR 7807018A FR 2377045 A1 FR2377045 A1 FR 2377045A1
- Authority
- FR
- France
- Prior art keywords
- detectors
- seismic waves
- cables
- sequentially transmitted
- reflected seismic
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 abstract 3
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/245—Amplitude control for seismic recording
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H19/00—Networks using time-varying elements, e.g. N-path filters
- H03H19/002—N-path filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H19/00—Networks using time-varying elements, e.g. N-path filters
- H03H19/008—Networks using time-varying elements, e.g. N-path filters with variable switch closing time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/04—Distributors combined with modulators or demodulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/10—Arrangements for reducing cross-talk between channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Oceanography (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Multimedia (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
La figure 5 ci-jointe est un schéma synoptique d'une unité d'émission-réception dont les constituants principaux sont un circuit répéteur 114, un circuit d'interrogation 116, un circuit de commandement 118, des pré-amplificateurs 120, un multiplexeur 122, une amplificateur de conditionnement de gain 124, un convertisseur analogique-numérique 126, un ensemble à registre de sortie et convertisseur de code 128, un détecteur d'erreurs 130, un circuit de commande 132, un circuit d'alimentation 134, un circuit de sortie d'essai 136 et un relais de commande d'essai 138. Exploration géophysique
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/576,943 US3996553A (en) | 1975-05-12 | 1975-05-12 | Seismic data telemetering system |
US05/664,618 US4092629A (en) | 1976-03-08 | 1976-03-08 | Decentralized seismic data processing system |
US05/665,151 US4023140A (en) | 1975-05-12 | 1976-03-08 | Seismic data telemetering system |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2377045A1 true FR2377045A1 (fr) | 1978-08-04 |
FR2377045B1 FR2377045B1 (fr) | 1983-01-07 |
Family
ID=27416254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7807018A Granted FR2377045A1 (fr) | 1975-05-12 | 1978-03-10 | Multiplexage d'emetteurs-recepteurs pour ensemble de recueil de donnees sismiques. |
Country Status (8)
Country | Link |
---|---|
BR (1) | BR7602919A (fr) |
DK (1) | DK207576A (fr) |
FR (1) | FR2377045A1 (fr) |
IT (1) | IT1046697B (fr) |
NL (1) | NL181956C (fr) |
NO (1) | NO145318C (fr) |
PT (1) | PT65090B (fr) |
SE (1) | SE409909B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538194A1 (fr) * | 1982-12-16 | 1984-06-22 | 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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2036151A5 (fr) * | 1969-03-05 | 1970-12-24 | Sercel Rech Const Elect | |
DE2452441A1 (de) * | 1973-11-05 | 1975-05-07 | Globe Universal Sciences | Informationsuebertragungssystem |
-
1976
- 1976-04-29 SE SE7604977A patent/SE409909B/xx not_active IP Right Cessation
- 1976-05-04 NL NLAANVRAGE7604732,A patent/NL181956C/xx not_active IP Right Cessation
- 1976-05-06 NO NO761572A patent/NO145318C/no unknown
- 1976-05-10 IT IT49386/76A patent/IT1046697B/it active
- 1976-05-10 BR BR2919/76A patent/BR7602919A/pt unknown
- 1976-05-11 DK DK207576A patent/DK207576A/da not_active Application Discontinuation
- 1976-05-12 PT PT65090A patent/PT65090B/pt unknown
-
1978
- 1978-03-10 FR FR7807018A patent/FR2377045A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2036151A5 (fr) * | 1969-03-05 | 1970-12-24 | Sercel Rech Const Elect | |
DE2452441A1 (de) * | 1973-11-05 | 1975-05-07 | Globe Universal Sciences | Informationsuebertragungssystem |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538194A1 (fr) * | 1982-12-16 | 1984-06-22 | 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 |
EP0114544A2 (fr) * | 1982-12-16 | 1984-08-01 | Institut Français du Pétrole | Méthode pour la commande à distance d'appareils d'acquisition de signaux au moyen d'un voie de transmission à bande passante étroite et dispositif pour sa mise en oeuvre |
EP0114544A3 (en) * | 1982-12-16 | 1984-08-22 | Institut Francais Du Petrole | Method and apparatus for the remote control of data acquisition units using a narrow band-pass transmission channel |
Also Published As
Publication number | Publication date |
---|---|
PT65090B (en) | 1977-09-14 |
SE409909B (sv) | 1979-09-10 |
IT1046697B (it) | 1980-07-31 |
NO145318B (no) | 1981-11-16 |
SE7604977L (sv) | 1976-11-13 |
BR7602919A (pt) | 1976-11-23 |
NL181956C (nl) | 1987-12-01 |
NL181956B (nl) | 1987-07-01 |
NO761572L (fr) | 1976-11-15 |
DK207576A (da) | 1976-11-13 |
PT65090A (en) | 1976-06-01 |
NO145318C (no) | 1982-02-24 |
NL7604732A (nl) | 1976-11-16 |
FR2377045B1 (fr) | 1983-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |