SE7800390L - Digital ekoundertruckare for ett modem for datatransmission genom modulering av en bervag - Google Patents

Digital ekoundertruckare for ett modem for datatransmission genom modulering av en bervag

Info

Publication number
SE7800390L
SE7800390L SE7800390A SE7800390A SE7800390L SE 7800390 L SE7800390 L SE 7800390L SE 7800390 A SE7800390 A SE 7800390A SE 7800390 A SE7800390 A SE 7800390A SE 7800390 L SE7800390 L SE 7800390L
Authority
SE
Sweden
Prior art keywords
echounder
moduling
trucker
relay
digital
Prior art date
Application number
SE7800390A
Other languages
English (en)
Other versions
SE426763B (sv
Inventor
J-P Baudoux
C D Macchi
Original Assignee
Trt Telecom Radio Electr
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
Priority claimed from FR7701197A external-priority patent/FR2377734A1/fr
Priority claimed from FR7718342A external-priority patent/FR2394938A2/fr
Application filed by Trt Telecom Radio Electr filed Critical Trt Telecom Radio Electr
Publication of SE7800390L publication Critical patent/SE7800390L/sv
Publication of SE426763B publication Critical patent/SE426763B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
SE7800390A 1977-01-17 1978-01-13 Digital ekoeliminator for ett modem for dataoverforing genom modulation av en bervag SE426763B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7701197A FR2377734A1 (fr) 1977-01-17 1977-01-17 Annuleur d'echo numerique pour modem de transmission de donnees par modulation d'une porteuse
FR7718342A FR2394938A2 (fr) 1977-06-15 1977-06-15 Annuleur d'echo numerique pour modem de transmission de donnees par modulation d'une porteuse

Publications (2)

Publication Number Publication Date
SE7800390L true SE7800390L (sv) 1978-07-18
SE426763B SE426763B (sv) 1983-02-07

Family

ID=26219806

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7800390A SE426763B (sv) 1977-01-17 1978-01-13 Digital ekoeliminator for ett modem for dataoverforing genom modulation av en bervag

Country Status (7)

Country Link
US (1) US4162378A (sv)
JP (1) JPS5390712A (sv)
AU (1) AU514263B2 (sv)
DE (1) DE2801375C3 (sv)
IT (1) IT1091970B (sv)
NL (1) NL7800408A (sv)
SE (1) SE426763B (sv)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1115559B (it) * 1978-08-29 1986-02-03 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la cancellazione numerica dell eco
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
NL7903759A (nl) * 1979-05-14 1980-11-18 Philips Nv Echocompensator met hoogdoorlaatfilter.
DE2920575C2 (de) * 1979-05-21 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Digital-Fernmeldesystem mit mindestens einem Vierdrahtleitungsabschnitt
FR2460075B1 (fr) * 1979-06-22 1988-12-09 Cit Alcatel Annuleur d'echo adaptatif pour transmission de donnees en duplex
FR2475322A1 (fr) * 1980-02-01 1981-08-07 Trt Telecom Radio Electr Annuleur d'echo a circuits de calcul simplifies
FR2487144B1 (fr) * 1980-07-21 1986-10-24 Trt Telecom Radio Electr Dispositif d'annulation d'un signal d'echo composite
CA1180141A (en) * 1980-11-15 1984-12-27 Kenzo Takahashi Echo canceller system
US4464545A (en) * 1981-07-13 1984-08-07 Bell Telephone Laboratories, Incorporated Echo canceller
DE3129343A1 (de) * 1981-07-24 1983-02-10 Siemens AG, 1000 Berlin und 8000 München Adaptiver entzerrer fuer digitalsignale
SE426764B (sv) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab Forfarande att astadkomma adaptiv ekoeliminering vid overforing av digital information i duplex jemte anordning for utforande av forfarandet
SE426765B (sv) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab Balansfilter av fir-typ ingaende i sendar-mottagarenheten i ett telekommunikationssystem
FR2517905B1 (fr) * 1981-12-09 1985-11-29 Telecommunications Sa Dispositif d'initialisation pour annuleur d'echo et son application aux echos lointains
FR2528642B1 (fr) * 1982-06-11 1985-10-25 Cit Alcatel Annuleur d'echo pour transmission de donnees
US4669116A (en) * 1982-12-09 1987-05-26 Regents Of The University Of California Non-linear echo cancellation of data signals
FR2540314A1 (fr) * 1983-01-31 1984-08-03 Trt Telecom Radio Electr Procede d'initialisation des coefficients de filtres dans un dispositif d'annulation d'echos proche et lointain et dispositif de mise en oeuvre de ce procede
US4594479A (en) * 1983-08-18 1986-06-10 At&T Information Systems Inc. Bell Telephone Laboratories, Inc. Fast start-up of adaptive echo canceler or echo measurement device
US4682358A (en) * 1984-12-04 1987-07-21 American Telephone And Telegraph Company Echo canceller
JPH0616592B2 (ja) * 1985-12-23 1994-03-02 富士通株式会社 Ｆｄｍモデム
JPS62150416U (sv) * 1986-03-17 1987-09-24
US4849945A (en) * 1986-12-08 1989-07-18 Tomex Corporation Seismic processing and imaging with a drill-bit source
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
JP2518394B2 (ja) * 1989-05-24 1996-07-24 日本電気株式会社 エコ―キャンセラ方式全二重送受信回路
US5487109A (en) * 1994-05-17 1996-01-23 Bellsouth Corporation End office of a telephone system with a zero loss plan
US6078645A (en) * 1997-02-20 2000-06-20 Lucent Technologies Inc. Apparatus and method for monitoring full duplex data communications
DE112009004740B4 (de) 2009-03-17 2018-02-08 Skyworks Solutions, Inc. SAW-loser LNA-loser rauscharmer Empfänger, Verfahren zum Verarbeiten eines empfangenen Signals, Empfänger, Verfahren zum Verarbeiten eines empfangenen Hochfrequenzsignals und drahtloses Kommunikationsgerät

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor
JPS5226973B2 (sv) * 1973-01-19 1977-07-18
US4087654A (en) * 1975-11-28 1978-05-02 Bell Telephone Laboratories, Incorporated Echo canceller for two-wire full duplex data transmission
NL170688C (nl) * 1976-06-28 1982-12-01 Philips Nv Inrichting voor simultane tweerichtingsdatatransmissie over tweedraadsverbindingen.
US4074086A (en) * 1976-09-07 1978-02-14 Bell Telephone Laboratories, Incorporated Joint adaptive echo canceller and equalizer for two-wire full-duplex data transmission
US4072830A (en) * 1976-10-04 1978-02-07 Bell Telephone Laboratories, Incorporated Variable phase shifter for adaptive echo cancellers

Also Published As

Publication number Publication date
AU514263B2 (en) 1981-01-29
AU3243078A (en) 1979-07-19
US4162378A (en) 1979-07-24
JPS5390712A (en) 1978-08-09
DE2801375B2 (de) 1981-05-14
DE2801375C3 (de) 1982-01-28
NL7800408A (nl) 1978-07-19
IT7819251A0 (it) 1978-01-13
IT1091970B (it) 1985-07-06
SE426763B (sv) 1983-02-07
JPS618618B2 (sv) 1986-03-15
DE2801375A1 (de) 1978-07-20

Similar Documents

Publication Publication Date Title
SE7800390L (sv) Digital ekoundertruckare for ett modem for datatransmission genom modulering av en bervag
SE409933B (sv) Ekoeliminerare for ett datatransmissionssystem
JPS5391514A (en) Data transmitter receiver
IT8123483A0 (it) Apparecchiatura per trasmettere un segnale digitale.
GB2032227B (en) D c free encoding for data transmission
ATA4482A (de) Digitaler geschwindigkeitsfehlerkompensator
IL57445A0 (en) Novel thiazolyl compounds
GB2004098B (en) Digital data transmission
SE398427B (sv) Demultiplexor for ett tidsmultiplext, digitalt overforingssystem
IL53557A0 (en) A facsimile receiver
GB1541516A (en) Vibration transmission mechanism for a phonograph
JPS53138608A (en) Digital link bit error rate estimating device
YU39402B (en) Arrangement for a clock signal transmission
IT7829744A0 (it) Bilancia digitale.
JPS5366302A (en) Data transmitter
NO800792L (no) System for overfoering av digitale data.
DE3126498C3 (de) Magnetische Abschirming für einen Übertrager
JPS5416142A (en) Partial byte transmitter for digital communication
JPS52144214A (en) Protector for repeater
JPS52103910A (en) Digital repeater
IT1094996B (it) Complesso a stilo per ricevitori facsimile
JPS52117725A (en) Transmission mechanism for bush cleaner
BE867161A (fr) Mecanisme de transmission a vitesses multiples, plus specialement pour ourdissoirs
GB2032228B (en) D c free encoding for data transmission
JPS545369A (en) Receiver for data transmitter

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 7800390-2

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 7800390-2

Format of ref document f/p: F