FR2358707A1 - Dispositif numerique de traitement de signaux - Google Patents

Dispositif numerique de traitement de signaux

Info

Publication number
FR2358707A1
FR2358707A1 FR7721485A FR7721485A FR2358707A1 FR 2358707 A1 FR2358707 A1 FR 2358707A1 FR 7721485 A FR7721485 A FR 7721485A FR 7721485 A FR7721485 A FR 7721485A FR 2358707 A1 FR2358707 A1 FR 2358707A1
Authority
FR
France
Prior art keywords
digital signal
processing device
signal processing
samples
multiplied
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
FR7721485A
Other languages
English (en)
Other versions
FR2358707B1 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2358707A1 publication Critical patent/FR2358707A1/fr
Application granted granted Critical
Publication of FR2358707B1 publication Critical patent/FR2358707B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G06F17/15—Correlation function computation including computation of convolution operations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0227—Measures concerning the coefficients
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0233—Measures concerning the signal representation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Computer Hardware Design (AREA)
  • Computational Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Algebra (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Dispositif numérique de traitement de signaux, par exemple un filtre numérique pour calculer des échantillons de signal de sortie dont chacun est égal à la somme de produits de plusieurs paires (jeu N) d'échantillons de signal d'entrée. Un des échantillons de la paire est formé par un échantillon x(n) d'un signal numérique à filtrer, l'autre étant formé par un coefficient de filtre z(n), alors que par exemple x(n) respectivement z(n) n'est à même d'acquérir qu'un nombre limité de valeurs O, +- Ap (p de 1 à M avec M < N). Dans ce cas, z(n) est d'abord multiplié par le signe de x(n) (produit z(n). sgn Øx(n)õ. Selon la grandeur de x(n), ce produit est fourni à un accumulateur, correspondant. Les parties de somme emmagasinées dans les accumulateurs sont multiplié par la grandeur x(n) qui correspond auxdites sommes, après quoi les produits obtenus de la sorte sont additionnés. Application aux installations téléphoniques.
FR7721485A 1976-07-12 1977-07-12 Dispositif numerique de traitement de signaux Granted FR2358707A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7607682,A NL178640C (nl) 1976-07-12 1976-07-12 Digitale signaalbewerkingsinrichting.

Publications (2)

Publication Number Publication Date
FR2358707A1 true FR2358707A1 (fr) 1978-02-10
FR2358707B1 FR2358707B1 (fr) 1984-06-29

Family

ID=19826577

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721485A Granted FR2358707A1 (fr) 1976-07-12 1977-07-12 Dispositif numerique de traitement de signaux

Country Status (10)

Country Link
US (1) US4121296A (fr)
JP (1) JPS539449A (fr)
AU (1) AU505713B2 (fr)
BE (1) BE856703A (fr)
CA (1) CA1110769A (fr)
DE (1) DE2729912A1 (fr)
FR (1) FR2358707A1 (fr)
GB (1) GB1571702A (fr)
NL (1) NL178640C (fr)
SE (1) SE424249B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528642A1 (fr) * 1982-06-11 1983-12-16 Cit Alcatel Annuleur d'echo pour transmission de donnees

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264983A (en) * 1979-03-19 1981-04-28 Tektronix, Inc. Time-multiplexed CCD transversal filter
JPS5640318A (en) * 1979-09-12 1981-04-16 Nec Corp Transversal filter
NL8203520A (nl) * 1982-09-10 1984-04-02 Philips Nv Digitale filterinrichting.
US4777612A (en) * 1983-10-05 1988-10-11 Nec Corporation Digital signal processing apparatus having a digital filter
US4750144A (en) * 1985-12-31 1988-06-07 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Real time pipelined system for forming the sum of products in the processing of video data
GB8611180D0 (en) * 1986-05-08 1986-06-18 Secr Defence Signal transforming device
JPS63304806A (ja) * 1987-06-03 1988-12-13 日本鋪道株式会社 舗装材施工装置
JPS63304805A (ja) * 1987-06-03 1988-12-13 日本鋪道株式会社 舗装材締固装置
FR2618925B1 (fr) * 1987-07-30 1989-12-15 Rault Jean Dispositif de calcul numerique pour installation de transmission de donnees en code 2b 1q ou analogue
EP0309888B1 (fr) * 1987-09-30 1993-03-31 Siemens Aktiengesellschaft Procédé et circuit pour la production de signaux filtrés
US4926472A (en) * 1988-11-10 1990-05-15 National Semiconductor Corporation Reduction of signal processing requirements in a 2B1Q-code echo canceller or equalizer
US5103419A (en) * 1989-02-02 1992-04-07 Matsushita Electric Industrial Co., Ltd. Circuit for calculating the sum of products of data
US5001661A (en) * 1990-01-23 1991-03-19 Motorola, Inc. Data processor with combined adaptive LMS and general multiplication functions
JP2968350B2 (ja) * 1991-01-11 1999-10-25 三菱電機株式会社 直交変調回路
US5511015A (en) * 1993-11-30 1996-04-23 Loral Vought Systems Corporation Double-accumulator implementation of the convolution function
DE19545623C1 (de) * 1995-12-07 1997-07-17 Akg Akustische Kino Geraete Verfahren und Vorrichtung zur Filterung eines Audiosignals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521041A (en) * 1967-07-19 1970-07-21 Ibm Digital filters
US3949206A (en) * 1974-12-17 1976-04-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Filtering device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522546A (en) * 1968-02-29 1970-08-04 Bell Telephone Labor Inc Digital filters
NL169535C (nl) * 1974-11-14 1982-07-16 Philips Nv Digitale signaalbewerkingsinrichting met gestuurde kwantisering.
US3979701A (en) * 1975-06-17 1976-09-07 Communications Satellite Corporation (Comsat) Non-recursive digital filter employing simple coefficients

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521041A (en) * 1967-07-19 1970-07-21 Ibm Digital filters
US3949206A (en) * 1974-12-17 1976-04-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Filtering device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528642A1 (fr) * 1982-06-11 1983-12-16 Cit Alcatel Annuleur d'echo pour transmission de donnees
EP0096828A1 (fr) * 1982-06-11 1983-12-28 COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: Annuleur d'écho pour transmission de données

Also Published As

Publication number Publication date
DE2729912A1 (de) 1978-01-19
NL178640B (nl) 1985-11-18
DE2729912C2 (fr) 1987-05-14
BE856703A (fr) 1978-01-11
SE424249B (sv) 1982-07-05
GB1571702A (en) 1980-07-16
AU505713B2 (en) 1979-11-29
CA1110769A (fr) 1981-10-13
SE7707970L (sv) 1978-01-13
US4121296A (en) 1978-10-17
NL178640C (nl) 1986-04-16
NL7607682A (nl) 1978-01-16
JPS539449A (en) 1978-01-27
AU2685077A (en) 1979-01-11
FR2358707B1 (fr) 1984-06-29
JPS5614005B2 (fr) 1981-04-01

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