FR1381314A - Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone - Google Patents
Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchroneInfo
- Publication number
- FR1381314A FR1381314A FR945536A FR945536A FR1381314A FR 1381314 A FR1381314 A FR 1381314A FR 945536 A FR945536 A FR 945536A FR 945536 A FR945536 A FR 945536A FR 1381314 A FR1381314 A FR 1381314A
- Authority
- FR
- France
- Prior art keywords
- digital signals
- transmission devices
- synchronous transmission
- transmitting digital
- synchronization methods
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/68—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for wholly or partially suppressing the carrier or one side band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
- H04L25/4923—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
- H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR945536A FR1381314A (fr) | 1963-08-23 | 1963-08-23 | Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone |
CH983164A CH426928A (de) | 1963-08-23 | 1964-07-27 | Ubertragungsanlage für Impulssignale |
SE9273/64A SE318599B (fr) | 1963-08-23 | 1964-07-30 | |
US386993A US3378770A (en) | 1963-08-23 | 1964-08-03 | System for quadrature modulation of ternary signals with auxiliary oscillation for use in carrier regeneration at receiver |
BE651389A BE651389A (fr) | 1963-08-23 | 1964-08-04 | |
GB32824/64A GB1024095A (en) | 1963-08-23 | 1964-08-12 | Improvements in and relating to systems for the transmission of pulse signals in a prescribed transmission band |
NL646409439A NL142852B (nl) | 1963-08-23 | 1964-08-15 | Transmissiestelsel voor het in een voorgeschreven transmissieband overdragen van pulssignalen. |
DET26844A DE1274635B (de) | 1963-08-23 | 1964-08-19 | UEbertragungssystem fuer Impulssignale in einem vorgeschriebenen UEbertragungsband |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR945536A FR1381314A (fr) | 1963-08-23 | 1963-08-23 | Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1381314A true FR1381314A (fr) | 1964-12-14 |
Family
ID=8811086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR945536A Expired FR1381314A (fr) | 1963-08-23 | 1963-08-23 | Procédés de synchronisation pour transmettre des signaux digitaux à travers des dispositifs de transmission non synchrone |
Country Status (8)
Country | Link |
---|---|
US (1) | US3378770A (fr) |
BE (1) | BE651389A (fr) |
CH (1) | CH426928A (fr) |
DE (1) | DE1274635B (fr) |
FR (1) | FR1381314A (fr) |
GB (1) | GB1024095A (fr) |
NL (1) | NL142852B (fr) |
SE (1) | SE318599B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3522537A (en) * | 1966-07-25 | 1970-08-04 | Western Union Telegraph Co | Vestigial sideband transmission system having two channels in quadrature |
US4103234A (en) * | 1967-11-24 | 1978-07-25 | General Dynamics Corp. | System for transmission storage and/or multiplexing of information |
NL6800093A (fr) * | 1968-01-03 | 1969-07-07 | ||
US3962639A (en) * | 1973-06-11 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Navy | System for reducing radio communication frequency bandwidth and increasing number of channels available |
FR2309089A1 (fr) * | 1975-04-25 | 1976-11-19 | Ibm France | Procede pour synchroniser l'horloge du recepteur d'un systeme de transmission de donnees et dispositif pour mettre en oeuvre le procede |
GB1561643A (en) * | 1975-08-05 | 1980-02-27 | Marconi Co Ltd | Phaseshift-keying modulators |
FR2445079A1 (fr) * | 1978-12-20 | 1980-07-18 | Ibm France | Procede et dispositif pour detecter une sequence pseudo-aleatoire de changements de phase de 0o et 180o de la porteuse dans un recepteur de donnees |
FR2445078A1 (fr) * | 1978-12-20 | 1980-07-18 | Ibm France | Procede et dispositif pour detecter une sequence pseudo-aleatoire de deux symboles dans un recepteur de donnees utilisant une modulation a double bande laterale-porteuses en quadrature |
JP2601030B2 (ja) * | 1991-03-13 | 1997-04-16 | モトローラ・インコーポレイテッド | 拡散スペクトル通信システムおける通信チャネル数を調整する装置および方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE628642A (fr) * | 1962-02-19 | |||
BE631946A (fr) * | 1962-05-07 | |||
US3307152A (en) * | 1963-05-31 | 1967-02-28 | Gen Electric | Data transmission system with control character insertions |
-
1963
- 1963-08-23 FR FR945536A patent/FR1381314A/fr not_active Expired
-
1964
- 1964-07-27 CH CH983164A patent/CH426928A/de unknown
- 1964-07-30 SE SE9273/64A patent/SE318599B/xx unknown
- 1964-08-03 US US386993A patent/US3378770A/en not_active Expired - Lifetime
- 1964-08-04 BE BE651389A patent/BE651389A/xx unknown
- 1964-08-12 GB GB32824/64A patent/GB1024095A/en not_active Expired
- 1964-08-15 NL NL646409439A patent/NL142852B/xx unknown
- 1964-08-19 DE DET26844A patent/DE1274635B/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE1274635B (de) | 1968-08-08 |
BE651389A (fr) | 1965-02-04 |
SE318599B (fr) | 1969-12-15 |
NL142852B (nl) | 1974-07-15 |
GB1024095A (en) | 1966-03-30 |
CH426928A (de) | 1966-12-31 |
US3378770A (en) | 1968-04-16 |
NL6409439A (fr) | 1965-02-24 |
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