FR2419618A1 - Egaliseur automatique pour transmission numerique synchrone - Google Patents
Egaliseur automatique pour transmission numerique synchroneInfo
- Publication number
- FR2419618A1 FR2419618A1 FR7806953A FR7806953A FR2419618A1 FR 2419618 A1 FR2419618 A1 FR 2419618A1 FR 7806953 A FR7806953 A FR 7806953A FR 7806953 A FR7806953 A FR 7806953A FR 2419618 A1 FR2419618 A1 FR 2419618A1
- Authority
- FR
- France
- Prior art keywords
- synchronous digital
- digital transmission
- automatic equalizer
- equalization
- slaving
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/06—Control of transmission; Equalising by the transmitted signal
Abstract
La présente invention est du domaine des transmissions numériques synchrones. Elle a pour objet un égaliseur automatique ayant un réseau d'égalisation variable muni d'un asservissement dans lequel un autocorrélateur à coïncidence de signe effectue la corrélation entre les polarités de deux versions du signal égalisé, retardées l'une par rapport à l'autre d'un multiple entier d'un intervalle de temps unitaire. Elle s'utilise avantageusement pour l'égalisation de voies de transmission numérique synchrone empruntant les réseaux téléphoniques ou télégraphiques commutés.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7806953A FR2419618A1 (fr) | 1978-03-10 | 1978-03-10 | Egaliseur automatique pour transmission numerique synchrone |
BE1/9281A BE874262A (fr) | 1978-03-10 | 1979-02-19 | Egaliseur automatique pour transmission numerique synchrone |
DE19792908588 DE2908588A1 (de) | 1978-03-10 | 1979-03-05 | Schaltungsanordnung zur automatischen entzerrung in binaeren uebertragungsstrecken |
GB7907692A GB2016249B (en) | 1978-03-10 | 1979-03-05 | Automatic equalizer for a synchronous digital transmission signal |
CA323,012A CA1132218A (fr) | 1978-03-10 | 1979-03-08 | Egaliseur automatique pour transmission numerique synchrone |
LU81019A LU81019A1 (fr) | 1978-03-10 | 1979-03-08 | Egaliseur automatique pour transmission numerique synchrone |
NL7901888A NL7901888A (nl) | 1978-03-10 | 1979-03-08 | Automatische egalisator voor synchrone numerieke transmissie. |
US06/019,245 US4243956A (en) | 1978-03-10 | 1979-03-09 | Automatic equalizer for a synchronous digital transmission signal |
JP2681679A JPS54126408A (en) | 1978-03-10 | 1979-03-09 | Automatic equalizer for digital transmission |
IT67508/79A IT1118414B (it) | 1978-03-10 | 1979-03-09 | Equalizzatore automatico per la trasmissione numerica sincrona |
IE600/79A IE48005B1 (en) | 1978-03-10 | 1979-08-08 | An automatic equalizer for a synchronous digital transmission signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7806953A FR2419618A1 (fr) | 1978-03-10 | 1978-03-10 | Egaliseur automatique pour transmission numerique synchrone |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2419618A1 true FR2419618A1 (fr) | 1979-10-05 |
FR2419618B1 FR2419618B1 (fr) | 1980-08-22 |
Family
ID=9205621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7806953A Granted FR2419618A1 (fr) | 1978-03-10 | 1978-03-10 | Egaliseur automatique pour transmission numerique synchrone |
Country Status (11)
Country | Link |
---|---|
US (1) | US4243956A (fr) |
JP (1) | JPS54126408A (fr) |
BE (1) | BE874262A (fr) |
CA (1) | CA1132218A (fr) |
DE (1) | DE2908588A1 (fr) |
FR (1) | FR2419618A1 (fr) |
GB (1) | GB2016249B (fr) |
IE (1) | IE48005B1 (fr) |
IT (1) | IT1118414B (fr) |
LU (1) | LU81019A1 (fr) |
NL (1) | NL7901888A (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2945332C2 (de) * | 1979-11-09 | 1982-04-22 | Nixdorf Computer Ag, 4790 Paderborn | Vorrichtung zur automatischen Entzerrung auf der Empfangsseite eines elektrischen Datenübertragungsweges |
US4592068A (en) * | 1980-12-23 | 1986-05-27 | International Standard Electric Corporation | Repeater for a digital transmission system |
DE3205875C2 (de) * | 1982-02-18 | 1984-03-08 | Siemens AG, 1000 Berlin und 8000 München | Einstellbare Entzerrerschaltung |
DE3241813A1 (de) * | 1982-11-11 | 1984-05-17 | Siemens Ag | Automatisch sich auf die kabellaenge einstellende entzerreranordnung |
US4583234A (en) * | 1983-08-15 | 1986-04-15 | Rockwell International Corporation | Decision feedback equalizing apparatus |
US4520489A (en) * | 1983-08-15 | 1985-05-28 | Rockwell International Corporation | Decision feedback equalizing apparatus |
JPS60116290A (ja) * | 1983-11-28 | 1985-06-22 | Victor Co Of Japan Ltd | 映像信号の雑音低減回路 |
DE3512441A1 (de) * | 1985-04-04 | 1986-10-16 | Nixdorf Computer Ag, 4790 Paderborn | Verfahren zur erzeugung eines stellsignals fuer einen entzerrer sowie schaltungsanordnung zur durchfuehrung des verfahrens |
US4669091A (en) * | 1986-02-10 | 1987-05-26 | Rca Corporation | Adaptive multipath distortion equalizer |
DE3638877A1 (de) * | 1986-11-14 | 1988-05-26 | Nixdorf Computer Ag | Verfahren zur adaptiven entzerrung von impulssignalen sowie schaltungsanordnung zur durchfuehrung des verfahrens |
FR2613560B1 (fr) * | 1987-03-31 | 1989-06-23 | Cit Alcatel | Egaliseur automatique pour transmission numerique |
NL8701331A (nl) * | 1987-06-09 | 1989-01-02 | Philips Nv | Datatransmissiesysteem bevattende een beslissingsteruggekoppelde egalisator en gebruik makende van partieleresponsie technieken. |
US4759035A (en) * | 1987-10-01 | 1988-07-19 | Adtran | Digitally controlled, all rate equalizer |
US5237588A (en) * | 1989-03-13 | 1993-08-17 | Sony Corporation | Automatic equalizer |
US5052023A (en) * | 1990-07-20 | 1991-09-24 | Motorola, Inc. | Method and apparatus for received signal equalization |
US5448589A (en) * | 1994-08-01 | 1995-09-05 | Tektronix, Inc. | Circuit for sensing cable effects for automatic equalization |
US5699022A (en) * | 1996-02-09 | 1997-12-16 | Dsc Communications Corporation | Adaptive cable equalizer |
US6188721B1 (en) | 1998-04-17 | 2001-02-13 | Lucent Technologies, Inc. | System and method for adaptive equalization of a waveform independent of absolute waveform peak value |
TW480832B (en) * | 1999-12-20 | 2002-03-21 | Koninkl Philips Electronics Nv | An arrangement for receiving a digital signal from a transmission medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3746989A (en) * | 1971-09-30 | 1973-07-17 | Magnavox Co | Adaptive equalizer for digital information |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3368168A (en) * | 1965-06-02 | 1968-02-06 | Bell Telephone Labor Inc | Adaptive equalizer for digital transmission systems having means to correlate present error component with past, present and future received data bits |
US3736414A (en) * | 1971-06-30 | 1973-05-29 | Ibm | Transversal filter equalizer for partial response channels |
US3736530A (en) * | 1972-02-22 | 1973-05-29 | Bell Telephone Labor Inc | Adjustable equalizer control apparatus |
US3728649A (en) * | 1972-04-24 | 1973-04-17 | Bell Telephone Labor Inc | Automatic equalizer for digital cable transmission systems |
US3908115A (en) * | 1974-10-07 | 1975-09-23 | Weston Instruments Inc | Adaptively tuned data receiver |
-
1978
- 1978-03-10 FR FR7806953A patent/FR2419618A1/fr active Granted
-
1979
- 1979-02-19 BE BE1/9281A patent/BE874262A/fr not_active IP Right Cessation
- 1979-03-05 DE DE19792908588 patent/DE2908588A1/de active Granted
- 1979-03-05 GB GB7907692A patent/GB2016249B/en not_active Expired
- 1979-03-08 NL NL7901888A patent/NL7901888A/xx not_active Application Discontinuation
- 1979-03-08 CA CA323,012A patent/CA1132218A/fr not_active Expired
- 1979-03-08 LU LU81019A patent/LU81019A1/fr unknown
- 1979-03-09 IT IT67508/79A patent/IT1118414B/it active
- 1979-03-09 US US06/019,245 patent/US4243956A/en not_active Expired - Lifetime
- 1979-03-09 JP JP2681679A patent/JPS54126408A/ja active Granted
- 1979-08-08 IE IE600/79A patent/IE48005B1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3746989A (en) * | 1971-09-30 | 1973-07-17 | Magnavox Co | Adaptive equalizer for digital information |
Non-Patent Citations (1)
Title |
---|
NV8078/76 * |
Also Published As
Publication number | Publication date |
---|---|
FR2419618B1 (fr) | 1980-08-22 |
BE874262A (fr) | 1979-08-20 |
NL7901888A (nl) | 1979-09-12 |
DE2908588A1 (de) | 1979-09-20 |
JPS54126408A (en) | 1979-10-01 |
JPH0127614B2 (fr) | 1989-05-30 |
US4243956A (en) | 1981-01-06 |
DE2908588C2 (fr) | 1989-12-07 |
IT7967508A0 (it) | 1979-03-09 |
IE790600L (en) | 1979-09-10 |
IE48005B1 (en) | 1984-08-22 |
LU81019A1 (fr) | 1979-10-30 |
IT1118414B (it) | 1986-03-03 |
GB2016249B (en) | 1982-04-07 |
CA1132218A (fr) | 1982-09-21 |
GB2016249A (en) | 1979-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |