FR2373914A1 - Amplificateur a virgule flottante instantanee - Google Patents

Amplificateur a virgule flottante instantanee

Info

Publication number
FR2373914A1
FR2373914A1 FR7737770A FR7737770A FR2373914A1 FR 2373914 A1 FR2373914 A1 FR 2373914A1 FR 7737770 A FR7737770 A FR 7737770A FR 7737770 A FR7737770 A FR 7737770A FR 2373914 A1 FR2373914 A1 FR 2373914A1
Authority
FR
France
Prior art keywords
stage
floating valve
amplifier
valve amplifier
gain
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
Application number
FR7737770A
Other languages
English (en)
Other versions
FR2373914B1 (fr
Inventor
Miles Allan Smither
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.)
Geosource Inc
Original Assignee
Geosource Inc
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 Geosource Inc filed Critical Geosource Inc
Publication of FR2373914A1 publication Critical patent/FR2373914A1/fr
Application granted granted Critical
Publication of FR2373914B1 publication Critical patent/FR2373914B1/fr
Granted legal-status Critical Current

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

L'invention concerne un amplificateur à virgule flottante instantanée. Elle se caractérise en ce que le gain d'un étage de l'amplificateur à n étages (150, 151, 152, 153) est le carré du gain de l'étage qui le suit immédiatement, et en ce qu'une logique de commande 105, 106 décide si un étage donné est requis ou non pour amplifier le signal d'entrée à un niveau compris dans les limites préfixées. L'invention s'applique notamment aux explorations sismiques.
FR7737770A 1976-12-10 1977-12-09 Amplificateur a virgule flottante instantanee Granted FR2373914A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/749,218 US4104596A (en) 1976-12-10 1976-12-10 Instantaneous floating point amplifier

Publications (2)

Publication Number Publication Date
FR2373914A1 true FR2373914A1 (fr) 1978-07-07
FR2373914B1 FR2373914B1 (fr) 1983-02-25

Family

ID=25012783

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737770A Granted FR2373914A1 (fr) 1976-12-10 1977-12-09 Amplificateur a virgule flottante instantanee

Country Status (5)

Country Link
US (1) US4104596A (fr)
JP (2) JPS5372554A (fr)
DE (1) DE2749514A1 (fr)
FR (1) FR2373914A1 (fr)
GB (1) GB1578645A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040553A1 (de) * 1979-10-29 1981-08-27 Compagnie Générale de Géophysique, Massy Vorrichtung zum verstaerken und tasten von analogsignalen
DE3130476A1 (de) * 1980-07-25 1982-04-15 Compagnie Générale de Géophysique, Massy Schaltungsanordnung fuer verstaerkung und austastung von multiplexierten analogsignalen
EP0133991A2 (fr) * 1983-08-04 1985-03-13 Siemens Aktiengesellschaft Montage de circuit pour amplifier ou atténuer des signaux analoques d'entrée

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009574A1 (de) * 1980-03-13 1981-09-17 Krautkrämer, GmbH, 5000 Köln Verfahren und vorrichtung zur bestimmung der schallgeschwindigkeit in einem material vorgegebener dicke
CA1170756A (fr) * 1980-11-17 1984-07-10 Donald W. Harvey Telecommunication de donnees d'exploration sismique
US4554511A (en) * 1982-09-29 1985-11-19 Tetra Tech, Inc. Offset voltage correction network for instantaneous floating point amplifier
US4725950A (en) * 1985-06-19 1988-02-16 Syntrak, Inc. Marine seismic signal processor with D.C. offset compensation method
GB8610347D0 (en) * 1986-04-28 1986-06-04 Gen Electric Co Plc Agc circuit
US4704584A (en) * 1986-06-25 1987-11-03 Fairfield Industries Instantaneous floating point amplifier
GB2234069B (en) * 1988-10-28 1992-08-12 Motorola Inc Sensor arrangement
DE59508874D1 (de) * 1994-07-08 2001-01-04 Infineon Technologies Ag Verstärkeranordnung und Empfängerschaltung, die die Verstärkeranordnung enthält
JP3398573B2 (ja) * 1997-07-15 2003-04-21 松下電器産業株式会社 差動増幅装置
US8593147B2 (en) 2006-08-08 2013-11-26 Halliburton Energy Services, Inc. Resistivity logging with reduced dip artifacts
EP2066866B1 (fr) 2006-12-15 2018-09-12 Halliburton Energy Services, Inc. Outil de mesure de composant de couplage d'antenne doté d'une configuration d'antenne rotative
AU2008348131B2 (en) 2008-01-18 2011-08-04 Halliburton Energy Services, Inc. EM-guided drilling relative to an existing borehole
MY160258A (en) 2008-11-24 2017-02-28 Halliburton Energy Services Inc A high frequency dielectric measurement tool
WO2011022012A1 (fr) 2009-08-20 2011-02-24 Halliburton Energy Services, Inc. Caractérisation de fracture qui utilise des mesures de résistivité électromagnétiques directionnelles
WO2012002937A1 (fr) 2010-06-29 2012-01-05 Halliburton Energy Services, Inc. Procédé et appareil pour détecter des anomalies souterraines allongées
AU2012383577B2 (en) 2012-06-25 2015-07-09 Halliburton Energy Services, Inc. Tilted antenna logging systems and methods yielding robust measurement signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892891A (en) * 1955-11-02 1959-06-30 Bell Telephone Labor Inc Voice-operated gain adjusting device
US3308392A (en) * 1965-02-04 1967-03-07 Esso Production Company Seismic amplifier having means for changing the amplification of the seismic signal by discrete steps proportional to a given power of two
US3315223A (en) * 1966-06-10 1967-04-18 Exxon Production Research Co Digital seismic recording
FR1549197A (fr) * 1967-03-13 1968-12-13

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139590A (en) * 1962-05-04 1964-06-30 James H Brown A. c. amplifier with zero d. c. offset
DE1762974B2 (de) * 1965-01-20 1976-04-29 Ausscheidung aus: 15 62 256 International Business Machines Corp., Armonk, N.Y. (V.StA.) Analog-digital-wandler
NL6502149A (fr) * 1965-02-19 1966-08-22
US3671931A (en) * 1969-09-04 1972-06-20 Texaco Inc Amplifier system
JPS4871118A (fr) * 1971-12-24 1973-09-26

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892891A (en) * 1955-11-02 1959-06-30 Bell Telephone Labor Inc Voice-operated gain adjusting device
US3308392A (en) * 1965-02-04 1967-03-07 Esso Production Company Seismic amplifier having means for changing the amplification of the seismic signal by discrete steps proportional to a given power of two
US3315223A (en) * 1966-06-10 1967-04-18 Exxon Production Research Co Digital seismic recording
FR1549197A (fr) * 1967-03-13 1968-12-13

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040553A1 (de) * 1979-10-29 1981-08-27 Compagnie Générale de Géophysique, Massy Vorrichtung zum verstaerken und tasten von analogsignalen
DE3130476A1 (de) * 1980-07-25 1982-04-15 Compagnie Générale de Géophysique, Massy Schaltungsanordnung fuer verstaerkung und austastung von multiplexierten analogsignalen
EP0133991A2 (fr) * 1983-08-04 1985-03-13 Siemens Aktiengesellschaft Montage de circuit pour amplifier ou atténuer des signaux analoques d'entrée
EP0133991A3 (fr) * 1983-08-04 1985-04-10 Siemens Aktiengesellschaft Montage de circuit pour amplifier ou atténuer des signaux analoques d'entrée

Also Published As

Publication number Publication date
JPS6147517U (ja) 1986-03-29
DE2749514A1 (de) 1978-06-15
JPS5372554A (en) 1978-06-28
GB1578645A (en) 1980-11-05
FR2373914B1 (fr) 1983-02-25
US4104596A (en) 1978-08-01

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Legal Events

Date Code Title Description
ST Notification of lapse