DE2727242C3 - Schaltungsanordnung für simultane Zweiwgdatenübertragung über Zweidrahtverbindungen - Google Patents
Schaltungsanordnung für simultane Zweiwgdatenübertragung über ZweidrahtverbindungenInfo
- Publication number
- DE2727242C3 DE2727242C3 DE2727242A DE2727242A DE2727242C3 DE 2727242 C3 DE2727242 C3 DE 2727242C3 DE 2727242 A DE2727242 A DE 2727242A DE 2727242 A DE2727242 A DE 2727242A DE 2727242 C3 DE2727242 C3 DE 2727242C3
- Authority
- DE
- Germany
- Prior art keywords
- signals
- signal
- data symbols
- transmission
- level data
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 60
- 230000003044 adaptive effect Effects 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 238000002592 echocardiography Methods 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000011835 investigation Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 31
- 238000000034 method Methods 0.000 description 18
- 239000012925 reference material Substances 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000000605 extraction Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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)
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 (3)
| Publication Number | Publication Date |
|---|---|
| DE2727242A1 DE2727242A1 (de) | 1978-01-05 |
| DE2727242B2 DE2727242B2 (de) | 1980-11-13 |
| DE2727242C3 true DE2727242C3 (de) | 1981-09-03 |
Family
ID=19826457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2727242A Expired DE2727242C3 (de) | 1976-06-28 | 1977-06-16 | Schaltungsanordnung für simultane Zweiwgdatenübertragung über Zweidrahtverbindungen |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4117277A (enExample) |
| JP (1) | JPS533003A (enExample) |
| AU (1) | AU510666B2 (enExample) |
| CA (1) | CA1093698A (enExample) |
| DE (1) | DE2727242C3 (enExample) |
| FR (1) | FR2357119A1 (enExample) |
| GB (1) | GB1540036A (enExample) |
| IT (1) | IT1080952B (enExample) |
| NL (1) | NL170688C (enExample) |
| SE (2) | SE7707284L (enExample) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1091970B (it) * | 1977-01-17 | 1985-07-06 | Trt Telecom Radio Electr | Dispositivo digitale per la cancellazione di echi,per un modulatore/demodulatore,per la trasmissione di dati mediante modulazione di una portante |
| 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 |
| SE426765B (sv) * | 1981-11-02 | 1983-02-07 | Ellemtel Utvecklings Ab | Balansfilter av fir-typ ingaende i sendar-mottagarenheten i ett telekommunikationssystem |
| 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 |
| 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 |
| ATE64256T1 (de) * | 1984-03-30 | 1991-06-15 | 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 |
| DE60035679T2 (de) * | 1999-04-22 | 2008-06-05 | Broadcom Corp., Irvine | Gigabit-ethernt mit zeitverschiebungen zwischen verdrillten leitungspaaren |
| 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)
| 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 (enExample) * | 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 |
-
1976
- 1976-06-28 NL NLAANVRAGE7607037,A patent/NL170688C/xx not_active IP Right Cessation
-
1977
- 1977-06-16 DE DE2727242A patent/DE2727242C3/de not_active Expired
- 1977-06-16 US US05/807,008 patent/US4117277A/en not_active Expired - Lifetime
- 1977-06-22 CA CA281,115A patent/CA1093698A/en not_active Expired
- 1977-06-23 SE SE7707284D patent/SE7707284L/xx not_active Application Discontinuation
- 1977-06-23 AU AU26382/77A patent/AU510666B2/en not_active Expired
- 1977-06-23 SE SE7707284A patent/SE420790B/xx not_active IP Right Cessation
- 1977-06-24 IT IT25066/77A patent/IT1080952B/it active
- 1977-06-24 GB GB26590/77A patent/GB1540036A/en not_active Expired
- 1977-06-27 JP JP7645677A patent/JPS533003A/ja active Granted
- 1977-06-28 FR FR7719801A patent/FR2357119A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2357119A1 (fr) | 1978-01-27 |
| SE420790B (sv) | 1981-10-26 |
| NL170688B (nl) | 1982-07-01 |
| NL7607037A (nl) | 1977-12-30 |
| GB1540036A (en) | 1979-02-07 |
| CA1093698A (en) | 1981-01-13 |
| DE2727242B2 (de) | 1980-11-13 |
| JPS533003A (en) | 1978-01-12 |
| AU510666B2 (en) | 1980-07-10 |
| AU2638277A (en) | 1979-01-04 |
| IT1080952B (it) | 1985-05-16 |
| DE2727242A1 (de) | 1978-01-05 |
| FR2357119B1 (enExample) | 1981-08-14 |
| NL170688C (nl) | 1982-12-01 |
| SE7707284L (sv) | 1977-12-29 |
| US4117277A (en) | 1978-09-26 |
| JPS5733738B2 (enExample) | 1982-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |