FR2147770B1 - - Google Patents

Info

Publication number
FR2147770B1
FR2147770B1 FR717114988A FR7114988A FR2147770B1 FR 2147770 B1 FR2147770 B1 FR 2147770B1 FR 717114988 A FR717114988 A FR 717114988A FR 7114988 A FR7114988 A FR 7114988A FR 2147770 B1 FR2147770 B1 FR 2147770B1
Authority
FR
France
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.)
Expired
Application number
FR717114988A
Other versions
FR2147770A1 (fr
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR717114988A priority Critical patent/FR2147770B1/fr
Priority to US00247476A priority patent/US3803391A/en
Priority to NLAANVRAGE7205569,A priority patent/NL176500C/xx
Priority to IT49840/72A priority patent/IT957656B/it
Priority to SE7205514A priority patent/SE385249B/xx
Priority to GB1949172A priority patent/GB1397103A/en
Priority to BE782711A priority patent/BE782711A/fr
Priority to DE2220784A priority patent/DE2220784C2/de
Publication of FR2147770A1 publication Critical patent/FR2147770A1/fr
Application granted granted Critical
Publication of FR2147770B1 publication Critical patent/FR2147770B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141—Discrete Fourier transforms
    • G06F17/142—Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1921—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming Fourier integrals, harmonic analysis and synthesis
FR717114988A 1971-04-27 1971-04-27 Expired FR2147770B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR717114988A FR2147770B1 (fr) 1971-04-27 1971-04-27
NLAANVRAGE7205569,A NL176500C (nl) 1971-04-27 1972-04-25 Inrichting voor het berekenen van de discrete fourier-getransformeerde van een signaal.
US00247476A US3803391A (en) 1971-04-27 1972-04-25 A real-time processing system and method utilizing discrete fourier transform
SE7205514A SE385249B (sv) 1971-04-27 1972-04-26 Forfarande for att berekna en insignals fourierkoffecienter i realtid samt anordning for genomforande av forfarandet
IT49840/72A IT957656B (it) 1971-04-27 1972-04-26 Perfezionamenti ai procedimenti e dispositivi di trattamento in tempo reale di segnali elettrici
GB1949172A GB1397103A (en) 1971-04-27 1972-04-26 Real time processing of electrical signals
BE782711A BE782711A (fr) 1971-04-27 1972-04-27 Perfectionnements aux procedes et dispositifs de traitement en temps reel de signaux electriques
DE2220784A DE2220784C2 (de) 1971-04-27 1972-04-27 Anordnung zur Berechnung der diskreten Fourier-Transformierten aufgrund von N reellen Abtastwerten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR717114988A FR2147770B1 (fr) 1971-04-27 1971-04-27

Publications (2)

Publication Number Publication Date
FR2147770A1 FR2147770A1 (fr) 1973-03-11
FR2147770B1 true FR2147770B1 (fr) 1974-06-21

Family

ID=9076009

Family Applications (1)

Application Number Title Priority Date Filing Date
FR717114988A Expired FR2147770B1 (fr) 1971-04-27 1971-04-27

Country Status (8)

Country Link
US (1) US3803391A (fr)
BE (1) BE782711A (fr)
DE (1) DE2220784C2 (fr)
FR (1) FR2147770B1 (fr)
GB (1) GB1397103A (fr)
IT (1) IT957656B (fr)
NL (1) NL176500C (fr)
SE (1) SE385249B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920978A (en) * 1974-02-25 1975-11-18 Sanders Associates Inc Spectrum analyzer
US3926367A (en) * 1974-09-27 1975-12-16 Us Navy Complex filters, convolvers, and multipliers
FR2303326A1 (fr) * 1975-03-05 1976-10-01 Trt Telecom Radio Electr Dispositif de calcul de transformee de fourier discrete
FR2308143A1 (fr) * 1975-04-16 1976-11-12 Ibm France Dispositif generateur de fonction de convolution discrete et filtre numerique incorporant ledit dispositif
US3971927A (en) * 1975-11-03 1976-07-27 The United States Of America As Represented By The Secretary Of The Navy Modular discrete cosine transform system
JPS597990B2 (ja) * 1976-10-06 1984-02-22 日本電気株式会社 Ｎ点離散的フ−リエ変換演算装置
JPS5955523A (ja) * 1982-09-24 1984-03-30 Advantest Corp デジタルスペクトルアナライザ用信号発生器
US4612626A (en) * 1983-12-27 1986-09-16 Motorola Inc. Method of performing real input fast fourier transforms simultaneously on two data streams
US4689762A (en) * 1984-09-10 1987-08-25 Sanders Associates, Inc. Dynamically configurable fast Fourier transform butterfly circuit
US4698769A (en) * 1985-02-04 1987-10-06 American Telephone And Telegraph Company Supervisory audio tone detection in a radio channel
US4764974A (en) * 1986-09-22 1988-08-16 Perceptics Corporation Apparatus and method for processing an image
US5594655A (en) * 1993-08-20 1997-01-14 Nicolet Instrument Corporation Method and apparatus for frequency triggering in digital oscilloscopes and the like
US5987005A (en) * 1997-07-02 1999-11-16 Telefonaktiebolaget Lm Ericsson Method and apparatus for efficient computation of discrete fourier transform (DFT) and inverse discrete fourier transform
US6169723B1 (en) * 1997-07-02 2001-01-02 Telefonaktiebolaget Lm Ericsson Computationally efficient analysis and synthesis of real signals using discrete fourier transforms and inverse discrete fourier transforms
US6023719A (en) * 1997-09-04 2000-02-08 Motorola, Inc. Signal processor and method for fast Fourier transformation
US7203717B1 (en) 1999-10-30 2007-04-10 Stmicroelectronics Asia Pacific Pte. Ltd. Fast modified discrete cosine transform method
FR2815723B1 (fr) * 2000-10-24 2004-04-30 Thomson Csf Procede systeme et sonde pour l'obtention d'images par l'intermediaire d'ondes emises par une antenne apres reflexion de ces ondes au niveau d'un ensemble servant de cible
KR100836050B1 (ko) * 2001-05-23 2008-06-09 엘지전자 주식회사 고속 푸리에 변환 연산 장치

Also Published As

Publication number Publication date
FR2147770A1 (fr) 1973-03-11
DE2220784A1 (de) 1972-11-09
US3803391A (en) 1974-04-09
NL176500C (nl) 1985-04-16
BE782711A (fr) 1972-08-16
NL176500B (nl) 1984-11-16
DE2220784C2 (de) 1983-03-03
GB1397103A (en) 1975-06-11
SE385249B (sv) 1976-06-14
IT957656B (it) 1973-10-20
NL7205569A (fr) 1972-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse