SE420790B - Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar - Google Patents

Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar

Info

Publication number
SE420790B
SE420790B SE7707284A SE7707284A SE420790B SE 420790 B SE420790 B SE 420790B SE 7707284 A SE7707284 A SE 7707284A SE 7707284 A SE7707284 A SE 7707284A SE 420790 B SE420790 B SE 420790B
Authority
SE
Sweden
Prior art keywords
twin
circuits
data transfer
double data
simultaneous double
Prior art date
Application number
SE7707284A
Other languages
English (en)
Swedish (sv)
Inventor
Den Elzen H C Van
Gerwen P J Van
W A M Snijders
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of SE420790B publication Critical patent/SE420790B/xx

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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Bidirectional Digital Transmission (AREA)
SE7707284A 1976-06-28 1977-06-23 Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar SE420790B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7607037,A NL170688C (nl) 1976-06-28 1976-06-28 Inrichting voor simultane tweerichtingsdatatransmissie over tweedraadsverbindingen.

Publications (1)

Publication Number Publication Date
SE420790B true SE420790B (sv) 1981-10-26

Family

ID=19826457

Family Applications (2)

Application Number Title Priority Date Filing Date
SE7707284A SE420790B (sv) 1976-06-28 1977-06-23 Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar
SE7707284D SE7707284L (sv) 1976-06-28 1977-06-23 Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE7707284D SE7707284L (sv) 1976-06-28 1977-06-23 Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar

Country Status (10)

Country Link
US (1) US4117277A (fr)
JP (1) JPS533003A (fr)
AU (1) AU510666B2 (fr)
CA (1) CA1093698A (fr)
DE (1) DE2727242C3 (fr)
FR (1) FR2357119A1 (fr)
GB (1) GB1540036A (fr)
IT (1) IT1080952B (fr)
NL (1) NL170688C (fr)
SE (2) SE420790B (fr)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE426763B (sv) * 1977-01-17 1983-02-07 Trt Telecom Radio Electr Digital ekoeliminator for ett modem for dataoverforing genom modulation av en bervag
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
US4268727A (en) * 1979-03-14 1981-05-19 International Telephone And Telegraph Corporation Adaptive digital echo cancellation circuit
NL7902053A (nl) * 1979-03-15 1980-09-17 Philips Nv Echocompensator voor homochrone data overdrachtssyste- men.
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
FR2485842B1 (fr) * 1980-06-30 1988-02-26 Cit Alcatel Dispositif de separation des voies emission et reception d'une transmission de donnees en duplex integral
US4326287A (en) * 1980-06-30 1982-04-20 International Business Machines Corp. Two wire bi-directional digital telephone link
JPS6046899B2 (ja) * 1980-09-26 1985-10-18 日本電気株式会社 反響消去装置
US4411006A (en) * 1981-09-09 1983-10-18 Communication Satellite Corporation Digital bit rate synchronizer for digital echo cancellers and similar signal processing devices
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
GB2111354B (en) * 1981-11-19 1985-06-19 Standard Telephones Cables Ltd Echo canceller
DE3231055A1 (de) * 1982-08-20 1984-02-23 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur basisbanduebertragung mit echokompensation
US4628156A (en) * 1982-12-27 1986-12-09 International Business Machines Corporation Canceller trained echo suppressor
DE3583052D1 (de) * 1984-03-30 1991-07-11 Siemens Ag Schaltungsanordnung zum pruefen der funktionsfaehigkeit einer datenuebertragunseinrichtung.
US4638473A (en) * 1984-12-28 1987-01-20 Gte Laboratories Incorporated Two wire bidirectional digital transmission system
AU584488B2 (en) * 1985-12-24 1989-05-25 Telstra Corporation Limited Method of initial synchronisation for full duplex digital transmission
NL8600087A (nl) * 1986-01-17 1987-08-17 Philips Nv Inrichting voor vol-duplex datatransmissie over tweedraadsverbindingen.
DE3643834C2 (de) * 1986-12-20 1994-10-06 Rheydt Kabelwerk Ag Verfahren zur bidirektionalen Übertragung von digitalen Signalen
US4953160A (en) * 1988-02-24 1990-08-28 Integrated Network Corporation Digital data over voice communication
US4924492A (en) * 1988-03-22 1990-05-08 American Telephone And Telegraph Company Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises
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
US5119402A (en) * 1990-06-26 1992-06-02 Digital Equipment Corporation Method and apparatus for transmission of local area network signals over unshielded twisted pairs
JP2853455B2 (ja) * 1992-05-15 1999-02-03 ケイディディ株式会社 エコーキャンセラ
US5396503A (en) * 1993-02-19 1995-03-07 Hewlett-Packard Company Method and system for communicating data
FR2729024A1 (fr) * 1994-12-30 1996-07-05 Matra Communication Annuleur d'echo acoustique avec filtrage en sous-bandes
US5887032A (en) * 1996-09-03 1999-03-23 Amati Communications Corp. Method and apparatus for crosstalk cancellation
US5905716A (en) * 1996-12-09 1999-05-18 Ericsson, Inc. Asynchronous full duplex communications over a single channel
AU4492100A (en) * 1999-04-22 2000-11-10 Broadcom Corporation Gigabit ethernet with timing offsets between the twisted pairs
DE102004025576B4 (de) * 2004-05-25 2006-03-30 Infineon Technologies Ag Sende-und Empfangsanordnung mit einer Regelung zur Störsignalunterdrückung
JP2007235502A (ja) * 2006-03-01 2007-09-13 Sony Corp オーディオ通信システム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707683A (en) * 1971-11-15 1972-12-26 Gte Automatic Electric Lab Inc Timing recovery circuit for use in modified duobinary transmission system
US3821494A (en) * 1972-07-14 1974-06-28 Ibm Digital echo suppressor with direct table look up control by delta coded signals
US3894200A (en) * 1973-10-10 1975-07-08 Communications Satellite Corp Adaptive echo canceller with digital center clipping
FR2272544B1 (fr) * 1974-05-24 1977-03-11 Cit Alcatel
US4024358A (en) * 1975-10-31 1977-05-17 Communications Satellite Corporation (Comsat) Adaptive echo canceller using differential pulse code modulation encoding
US4087654A (en) * 1975-11-28 1978-05-02 Bell Telephone Laboratories, Incorporated Echo canceller for two-wire full duplex data transmission

Also Published As

Publication number Publication date
US4117277A (en) 1978-09-26
FR2357119B1 (fr) 1981-08-14
JPS533003A (en) 1978-01-12
GB1540036A (en) 1979-02-07
CA1093698A (fr) 1981-01-13
SE7707284L (sv) 1977-12-29
AU2638277A (en) 1979-01-04
NL170688B (nl) 1982-07-01
FR2357119A1 (fr) 1978-01-27
IT1080952B (it) 1985-05-16
NL7607037A (nl) 1977-12-30
DE2727242C3 (de) 1981-09-03
NL170688C (nl) 1982-12-01
DE2727242A1 (de) 1978-01-05
JPS5733738B2 (fr) 1982-07-19
DE2727242B2 (de) 1980-11-13
AU510666B2 (en) 1980-07-10

Similar Documents

Publication Publication Date Title
SE420790B (sv) Anordning for samtidig dubbelriktad dataoverforing via tvatradiga kretsar
SE7514708L (sv) Dataoverforingssystem
DK366679A (da) Skriveapparat
SE7714244L (sv) Databehandlingsanordning
SE413122B (sv) Datalagringsanordning
SE421152B (sv) Databehandlingsanordning
SE7701253L (sv) Anordning for banformering
SE7603839L (sv) Dataoverforingsanordning
SE416438B (sv) Anordning vid dataoverforingssystem
SE7607466L (sv) Dataoverforingssystem
SE7804722L (sv) Dataoverforingsanordning
DK105877A (da) Dataoverforingsanleg
SE7605138L (sv) Dataoverforingsanordning
SE426427B (sv) Anordning for fotografisk datamarkering
SE7811137L (sv) Forfarande for dataoverforing
SE7704529L (sv) Digital informationsoverforingsanordning
SE409536B (sv) Anordning for tvatradig helduplex-dataoverforing
SE7601877L (sv) Dataoverforingsanordning
SE7708517L (sv) Kraftoverforing
PL199448A1 (pl) Urzadzenie wyboru informacji
SE7714243L (sv) Databehandlingsanordning
SE7714903L (sv) Informationsoverforingsanordning
AR213970A1 (es) Aparato de almacenamiento de datos
SE7804620L (sv) Dataoverforingsanleggning
SE7607883L (sv) Informationsoverforingsanordning

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 7707284-1

NUG Patent has lapsed

Ref document number: 7707284-1