FR2401555A1 - Synthetiseur numerique de signaux a plusieurs frequences - Google Patents
Synthetiseur numerique de signaux a plusieurs frequencesInfo
- Publication number
- FR2401555A1 FR2401555A1 FR7824379A FR7824379A FR2401555A1 FR 2401555 A1 FR2401555 A1 FR 2401555A1 FR 7824379 A FR7824379 A FR 7824379A FR 7824379 A FR7824379 A FR 7824379A FR 2401555 A1 FR2401555 A1 FR 2401555A1
- Authority
- FR
- France
- Prior art keywords
- frequency signal
- digital multi
- signal synthesizer
- signal
- logic matrix
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
- H04L27/122—Modulator circuits; Transmitter circuits using digital generation of carrier signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/03—Digital function generators working, at least partly, by table look-up
- G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
- H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Analogue/Digital Conversion (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
L'invention concerne un synthétiseur numérique de signaux de plusieurs fréquences. Chaque signal est découpé en n segments dont les périodes sont mémorisées sous forme de représentation binaire dans une matrice logique programmable. Un signal numérique d'entrée qui spécifie la fréquence du signal de sortie est décodé de manière à adresser la matrice logique qui indique la période du segment et le niveau de tension correspondant. L'invention s'applique notamment à des émetteurs à modulation de fréquence.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/826,484 US4142245A (en) | 1977-08-22 | 1977-08-22 | Multi-frequency digital wave synthesizer for providing analog output signals |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2401555A1 true FR2401555A1 (fr) | 1979-03-23 |
FR2401555B1 FR2401555B1 (fr) | 1983-04-22 |
Family
ID=25246659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824379A Granted FR2401555A1 (fr) | 1977-08-22 | 1978-08-22 | Synthetiseur numerique de signaux a plusieurs frequences |
Country Status (5)
Country | Link |
---|---|
US (1) | US4142245A (fr) |
JP (1) | JPS5452906A (fr) |
DE (1) | DE2836696A1 (fr) |
FR (1) | FR2401555A1 (fr) |
GB (1) | GB2003343B (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU529276B2 (en) * | 1978-11-23 | 1983-06-02 | General Electric Company Limited, The | A.c. generator |
US4301415A (en) * | 1980-01-28 | 1981-11-17 | Norlin Industries, Inc. | Programmable multiple phase AC power supply |
EP0066076B1 (fr) * | 1981-06-02 | 1986-02-19 | Texas Instruments Incorporated | Modem à circuit intégré pour signaux modulés par sauts de fréquence |
FR2551279B1 (fr) * | 1983-08-24 | 1988-10-14 | Texas Instruments France | Generateur d'onde sinusoidale, dont la frequence est asservie a un signal binaire, notamment pour modem |
US4631694A (en) * | 1984-04-27 | 1986-12-23 | National Semiconductor Corporation | Sine wave synthesizer |
DE3419886A1 (de) * | 1984-05-28 | 1985-11-28 | Siemens AG, 1000 Berlin und 8000 München | Sendeschaltung in einer datenuebertragungseinrichtung zur tonfrequenten datenuebertragung |
US4910698A (en) * | 1986-11-21 | 1990-03-20 | Schlumberger Technologies, Inc. | Sine wave generator using a cordic algorithm |
JPH0296963A (ja) * | 1988-10-03 | 1990-04-09 | Hitachi Ltd | 半導体集積回路装置 |
EP0375880B1 (fr) * | 1988-12-23 | 1994-06-22 | Siemens-Albis Aktiengesellschaft | Appareil de synthèse de fréquence |
US5055850A (en) * | 1990-09-04 | 1991-10-08 | Electronics & Space Corporation | Waveform generator |
EP2313975A2 (fr) * | 2008-08-07 | 2011-04-27 | Nxp B.V. | Procédé et appareil de génération de signal et procédé et système de test les utilisant |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285752A1 (fr) * | 1974-09-18 | 1976-04-16 | Ibm | Modulateur numerique a saut de frequence |
US3997855A (en) * | 1975-12-24 | 1976-12-14 | Motorola, Inc. | Digital FSK time rate of change modulator |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633017A (en) * | 1970-01-07 | 1972-01-04 | Sperry Rand Corp | Digital waveform generator |
US3772681A (en) * | 1970-10-14 | 1973-11-13 | Post Office | Frequency synthesiser |
FR2110845A5 (fr) * | 1970-10-29 | 1972-06-02 | Ibm France | |
US3727037A (en) * | 1971-08-27 | 1973-04-10 | A Zorn | Variable increment digital function generator |
US3735269A (en) * | 1971-10-29 | 1973-05-22 | Rockland Systems Corp | Digital frequency synthesizer |
US3813528A (en) * | 1972-06-02 | 1974-05-28 | Singer Co | High-speed function generator |
FR2208584A5 (fr) * | 1972-11-29 | 1974-06-21 | Ibm France | |
US4024385A (en) * | 1974-02-25 | 1977-05-17 | Raytheon Company | Second difference function generator |
JPS5513479B2 (fr) * | 1974-03-09 | 1980-04-09 | ||
US3898446A (en) * | 1974-09-06 | 1975-08-05 | Us Army | Quadratic phase memory |
GB1488433A (en) * | 1974-11-21 | 1977-10-12 | Ibm | Dpsk modulator |
US4039806A (en) * | 1975-10-01 | 1977-08-02 | Chevron Research Company | Synthesizer for testing elements of a geophysical data acquisition system |
US4001557A (en) * | 1975-10-14 | 1977-01-04 | The United States Of America As Represented By The United States Energy Research And Development Administration | Stored program digital process controller |
US4064423A (en) * | 1975-12-12 | 1977-12-20 | Applied Materials, Inc. | Digital system and method for generating analog control signals |
US4336613A (en) * | 1977-06-30 | 1982-06-22 | Texas Instruments Incorporated | Charge coupled device filters and modems incorporating such filters |
-
1977
- 1977-08-22 US US05/826,484 patent/US4142245A/en not_active Expired - Lifetime
-
1978
- 1978-06-19 GB GB7827288A patent/GB2003343B/en not_active Expired
- 1978-07-26 JP JP9055378A patent/JPS5452906A/ja active Pending
- 1978-08-22 DE DE19782836696 patent/DE2836696A1/de not_active Withdrawn
- 1978-08-22 FR FR7824379A patent/FR2401555A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285752A1 (fr) * | 1974-09-18 | 1976-04-16 | Ibm | Modulateur numerique a saut de frequence |
US3997855A (en) * | 1975-12-24 | 1976-12-14 | Motorola, Inc. | Digital FSK time rate of change modulator |
Also Published As
Publication number | Publication date |
---|---|
GB2003343B (en) | 1982-02-03 |
JPS5452906A (en) | 1979-04-25 |
FR2401555B1 (fr) | 1983-04-22 |
DE2836696A1 (de) | 1979-03-08 |
US4142245A (en) | 1979-02-27 |
GB2003343A (en) | 1979-03-07 |
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