FR2445073A1 - Convertisseur analogique-numerique logarithmique - Google Patents

Convertisseur analogique-numerique logarithmique

Info

Publication number
FR2445073A1
FR2445073A1 FR7931223A FR7931223A FR2445073A1 FR 2445073 A1 FR2445073 A1 FR 2445073A1 FR 7931223 A FR7931223 A FR 7931223A FR 7931223 A FR7931223 A FR 7931223A FR 2445073 A1 FR2445073 A1 FR 2445073A1
Authority
FR
France
Prior art keywords
analog
sample
digital converter
counter
counters
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.)
Pending
Application number
FR7931223A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2445073A1 publication Critical patent/FR2445073A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/58—Non-linear conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52—Input signal integrated with linear return to datum
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/145—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit the steps being performed sequentially in series-connected stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

L'invention concerne les convertisseurs analogique-numérique. Un convertisseur analogique-numérique convertit une suite d'échantillons provenant d'une source de signal analogique 11 en une suite de nombres binaires qui apparaissent sur les bornes de sortie d'un compteur composite qui comprend un premier compteur 13 et un second compteur 14. Les compteurs sont commandés séquentiellement de façon à fournir pour chaque échantillon un compte qui correspond au logarithme de l'échantillon. Les signaux de commande des compteurs sont élaborés à partir d'un cycle de charge et de décharge d'un condensateur C1 auquel l'échantillon est appliqué. Application aux instruments électroniques.
FR7931223A 1978-12-20 1979-12-20 Convertisseur analogique-numerique logarithmique Pending FR2445073A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/971,188 US4190825A (en) 1978-12-20 1978-12-20 Logarithmic analog-to-digital converter

Publications (1)

Publication Number Publication Date
FR2445073A1 true FR2445073A1 (fr) 1980-07-18

Family

ID=25518038

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931223A Pending FR2445073A1 (fr) 1978-12-20 1979-12-20 Convertisseur analogique-numerique logarithmique

Country Status (10)

Country Link
US (1) US4190825A (fr)
BR (1) BR7908421A (fr)
CH (1) CH643972A5 (fr)
DE (1) DE2950160A1 (fr)
ES (1) ES487129A1 (fr)
FR (1) FR2445073A1 (fr)
GB (1) GB2040127B (fr)
IT (1) IT1126490B (fr)
MX (1) MX147432A (fr)
SE (1) SE435009B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8402918A (nl) * 1984-09-25 1986-04-16 Philips Nv Niveau-indikator.
US4872687A (en) * 1987-07-23 1989-10-10 Dooley Daniel J Putting tutor
DE3829357A1 (de) * 1988-08-30 1990-03-08 Georg Plasberg Logarithmierender analog-digitalwandler
DE19739768A1 (de) * 1997-09-10 1999-03-11 Siemens Nixdorf Inf Syst Verfahren und Einrichtung zum Erzeugen einer Folge von mehrstelligen Binärcodes
DE19903557C1 (de) * 1999-01-29 2000-08-31 Texas Instruments Deutschland Verfahren zum Messen der Schwellenspannung eines Komparators und Anwendung dieses Verfahrens
DE102008007207A1 (de) 2008-02-01 2009-08-06 Reimer Offen Logarithmierender Analog-Digital Wandler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298546B (de) * 1967-06-08 1969-07-03 Siemens Ag Verfahren und Anordnung zur Analog-Digital-Umsetzung
DE2139126B2 (de) * 1971-08-05 1972-10-12 Wandel U. Goltermann, 7410 Reutlingen Digital in logarithmischem mass anzeigender spannungsmesser
FR2308146A1 (fr) * 1975-04-18 1976-11-12 Nancy Fondation Brasserie Malt Dispositif pour calculer la valeur numerique d'une fonction exponentielle d'une variable analogique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220091A (en) * 1967-10-27 1971-01-20 Solartron Electronic Group Improvements in ramp type analogue to digital converters
US3564538A (en) * 1968-01-29 1971-02-16 Gen Electric Multiple slope analog to digital converter
DE2114141B2 (de) * 1971-03-24 1973-08-09 Grutzediek, Hartmut, Dipl Phys Dr , 4952 Hausberge, Scheerer, Joachim, Dipl Phys, 6710 Frankenthal Analog-digital-umsetzer mit einem integrierenden verstaerker nach den mehrfach-rampen-verfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298546B (de) * 1967-06-08 1969-07-03 Siemens Ag Verfahren und Anordnung zur Analog-Digital-Umsetzung
DE2139126B2 (de) * 1971-08-05 1972-10-12 Wandel U. Goltermann, 7410 Reutlingen Digital in logarithmischem mass anzeigender spannungsmesser
FR2308146A1 (fr) * 1975-04-18 1976-11-12 Nancy Fondation Brasserie Malt Dispositif pour calculer la valeur numerique d'une fonction exponentielle d'une variable analogique

Also Published As

Publication number Publication date
MX147432A (es) 1982-12-02
BR7908421A (pt) 1980-09-23
SE435009B (sv) 1984-08-27
CH643972A5 (de) 1984-06-29
GB2040127A (en) 1980-08-20
SE7909818L (sv) 1980-06-21
US4190825A (en) 1980-02-26
GB2040127B (en) 1983-01-06
IT7927880A0 (it) 1979-12-07
ES487129A1 (es) 1980-09-16
IT1126490B (it) 1986-05-21
DE2950160A1 (de) 1980-07-10

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