FR2358707A1 - Dispositif numerique de traitement de signaux - Google Patents
Dispositif numerique de traitement de signauxInfo
- 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
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.
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) | DE2729912C2 (fr) |
FR (1) | FR2358707A1 (fr) |
GB (1) | GB1571702A (fr) |
NL (1) | NL178640C (fr) |
SE (1) | SE424249B (fr) |
Cited By (1)
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)
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. |
EP0137464B1 (fr) * | 1983-10-05 | 1991-06-12 | Nec Corporation | Appareil numérique de traitement de signaux comprenant un filtre numérique |
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 |
JPS63304805A (ja) * | 1987-06-03 | 1988-12-13 | 日本鋪道株式会社 | 舗装材締固装置 |
JPS63304806A (ja) * | 1987-06-03 | 1988-12-13 | 日本鋪道株式会社 | 舗装材施工装置 |
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 |
ATE87778T1 (de) * | 1987-09-30 | 1993-04-15 | Siemens Ag | Verfahren und schaltungsanordnung zur erzeugung von filtersignalen. |
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)
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)
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 |
-
1976
- 1976-07-12 NL NLAANVRAGE7607682,A patent/NL178640C/xx not_active IP Right Cessation
-
1977
- 1977-06-20 US US05/808,095 patent/US4121296A/en not_active Expired - Lifetime
- 1977-07-02 DE DE2729912A patent/DE2729912C2/de not_active Expired
- 1977-07-07 AU AU26850/77A patent/AU505713B2/en not_active Expired
- 1977-07-07 CA CA282,227A patent/CA1110769A/fr not_active Expired
- 1977-07-08 GB GB28746/77A patent/GB1571702A/en not_active Expired
- 1977-07-08 SE SE7707970A patent/SE424249B/xx not_active IP Right Cessation
- 1977-07-09 JP JP8152877A patent/JPS539449A/ja active Granted
- 1977-07-11 BE BE179258A patent/BE856703A/fr not_active IP Right Cessation
- 1977-07-12 FR FR7721485A patent/FR2358707A1/fr active Granted
Patent Citations (2)
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)
Title |
---|
EXBK/77 * |
Cited By (2)
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 |
---|---|
FR2358707B1 (fr) | 1984-06-29 |
NL178640C (nl) | 1986-04-16 |
NL7607682A (nl) | 1978-01-16 |
JPS539449A (en) | 1978-01-27 |
US4121296A (en) | 1978-10-17 |
DE2729912C2 (de) | 1987-05-14 |
CA1110769A (fr) | 1981-10-13 |
GB1571702A (en) | 1980-07-16 |
BE856703A (fr) | 1978-01-11 |
JPS5614005B2 (fr) | 1981-04-01 |
SE424249B (sv) | 1982-07-05 |
AU2685077A (en) | 1979-01-11 |
SE7707970L (sv) | 1978-01-13 |
NL178640B (nl) | 1985-11-18 |
DE2729912A1 (de) | 1978-01-19 |
AU505713B2 (en) | 1979-11-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |