JPS57203354A - Digital communication system - Google Patents
Digital communication systemInfo
- Publication number
- JPS57203354A JPS57203354A JP57091140A JP9114082A JPS57203354A JP S57203354 A JPS57203354 A JP S57203354A JP 57091140 A JP57091140 A JP 57091140A JP 9114082 A JP9114082 A JP 9114082A JP S57203354 A JPS57203354 A JP S57203354A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- compensation
- wire line
- input
- arm
- 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.)
- Pending
Links
Classifications
-
- 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
- H04B3/231—Echo cancellers using readout of a memory to provide the echo replica
-
- 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
- H04B3/238—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 using initial training sequence
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Dc Digital Transmission (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Stereophonic System (AREA)
- Paper (AREA)
- Bidirectional Digital Transmission (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3121545A DE3121545C2 (de) | 1981-05-29 | 1981-05-29 | Übersprech- u./o. Echo-Kompensationsschaltung |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57203354A true JPS57203354A (en) | 1982-12-13 |
Family
ID=6133568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57091140A Pending JPS57203354A (en) | 1981-05-29 | 1982-05-28 | Digital communication system |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0066006B1 (ja) |
JP (1) | JPS57203354A (ja) |
AT (1) | ATE22635T1 (ja) |
AU (1) | AU554002B2 (ja) |
BR (1) | BR8203166A (ja) |
DE (1) | DE3121545C2 (ja) |
LU (1) | LU83692A1 (ja) |
SU (1) | SU1605937A3 (ja) |
ZA (1) | ZA823769B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1186029A (en) * | 1982-06-11 | 1985-04-23 | Gordon F. Mein | Automatic correction circuit for received digitally encoded signals |
DE3327467A1 (de) * | 1983-07-29 | 1985-02-14 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und schaltungsanordnung zur kompensation von echosignalen |
GB2144950A (en) * | 1983-08-10 | 1985-03-13 | Philips Electronic Associated | Data transmission system |
JPH0886241A (ja) * | 1994-09-16 | 1996-04-02 | Hitachi Ltd | センサ及びアクチュエータの駆動装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5128413A (ja) * | 1974-09-03 | 1976-03-10 | Nippon Electric Co | Tekiogatahankyoshokyosochi |
JPS55123243A (en) * | 1979-03-16 | 1980-09-22 | Fujitsu Ltd | Echo canceler |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH423875A (de) * | 1964-07-23 | 1966-11-15 | Gretag Ag | Verfahren und Einrichtung zur Übertragung von Nachrichten über Kanäle begrenzter Bandbreite |
US3426281A (en) * | 1966-02-28 | 1969-02-04 | Us Army | Reception of time dispersed signals utilizing impulse response storage in recirculating delay lines |
US4024358A (en) * | 1975-10-31 | 1977-05-17 | Communications Satellite Corporation (Comsat) | Adaptive echo canceller using differential pulse code modulation encoding |
NO140648C (no) * | 1977-10-24 | 1983-03-29 | Elektrisk Bureau As | Direktiv kobler. |
JPS5829023B2 (ja) * | 1978-07-10 | 1983-06-20 | 富士通株式会社 | デ−タ通信装置 |
DE2853167C2 (de) * | 1978-12-08 | 1980-10-30 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Teilnehmerschaltung |
DE2920575C2 (de) * | 1979-05-21 | 1981-09-17 | Siemens AG, 1000 Berlin und 8000 München | Digital-Fernmeldesystem mit mindestens einem Vierdrahtleitungsabschnitt |
DE3116863C2 (de) * | 1981-04-28 | 1985-08-08 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Digitalsignal-Echokompensation |
-
1981
- 1981-05-29 DE DE3121545A patent/DE3121545C2/de not_active Expired
- 1981-10-07 AT AT81108041T patent/ATE22635T1/de not_active IP Right Cessation
- 1981-10-07 EP EP81108041A patent/EP0066006B1/de not_active Expired
- 1981-10-12 LU LU83692A patent/LU83692A1/de unknown
-
1982
- 1982-05-28 ZA ZA823769A patent/ZA823769B/xx unknown
- 1982-05-28 BR BR8203166A patent/BR8203166A/pt unknown
- 1982-05-28 AU AU84280/82A patent/AU554002B2/en not_active Ceased
- 1982-05-28 JP JP57091140A patent/JPS57203354A/ja active Pending
- 1982-05-28 SU SU823445700A patent/SU1605937A3/ru active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5128413A (ja) * | 1974-09-03 | 1976-03-10 | Nippon Electric Co | Tekiogatahankyoshokyosochi |
JPS55123243A (en) * | 1979-03-16 | 1980-09-22 | Fujitsu Ltd | Echo canceler |
Also Published As
Publication number | Publication date |
---|---|
EP0066006A2 (de) | 1982-12-08 |
AU554002B2 (en) | 1986-08-07 |
BR8203166A (pt) | 1983-05-17 |
EP0066006A3 (en) | 1984-01-11 |
LU83692A1 (de) | 1982-02-18 |
ATE22635T1 (de) | 1986-10-15 |
EP0066006B1 (de) | 1986-10-01 |
AU8428082A (en) | 1982-12-02 |
DE3121545C2 (de) | 1986-12-04 |
DE3121545A1 (de) | 1982-12-23 |
ZA823769B (en) | 1983-03-30 |
SU1605937A3 (ru) | 1990-11-07 |
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