ES8105909A1 - Perfeccionamientos en ecualizadores transversales - Google Patents

Perfeccionamientos en ecualizadores transversales

Info

Publication number
ES8105909A1
ES8105909A1 ES495155A ES495155A ES8105909A1 ES 8105909 A1 ES8105909 A1 ES 8105909A1 ES 495155 A ES495155 A ES 495155A ES 495155 A ES495155 A ES 495155A ES 8105909 A1 ES8105909 A1 ES 8105909A1
Authority
ES
Spain
Prior art keywords
equalizer
tap
additional
stage
accumulator
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
Application number
ES495155A
Other languages
English (en)
Other versions
ES495155A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Overseas Ltd
Original Assignee
Plessey Overseas Ltd
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 Plessey Overseas Ltd filed Critical Plessey Overseas Ltd
Publication of ES8105909A1 publication Critical patent/ES8105909A1/es
Publication of ES495155A0 publication Critical patent/ES495155A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Amplifiers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Inorganic Insulating Materials (AREA)
  • Circuits Of Receivers In General (AREA)
  • Dc Digital Transmission (AREA)
  • Networks Using Active Elements (AREA)
  • Optical Communication System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stereophonic System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

DISPOSITIVO PARA COMPENSAR LA CORRIENTE CONTINUA EN ECUALIZADORES ADAPTABLES. A UN ECUALIZADOR ADAPTABLE DE TRES TOMAS SE LE AÑADE UNA CUARTA TOMA O RAMIFICACION CONECTADA A UNA FUENTE DE TENSION CONSTANTE V. LA TENSION SE MULTIPLICA EN EL MULTIPLICADOR (M4) Y SE SUMA CON LAS SALIDAS DE LOS MULTIPLICADORES (M1, M2 Y M3) POR EL ACUMULADOR (A). LA SEÑAL DE ERROR (EK) SE CORRELACIONA CON LA TENSION CONSTANTE V EN EL CORRELACIONADOR (C4). LA SALIDA DEL CORRELACIONADOR (C4) SE UTILIZA PARA CONTROLAR LA GANANCIA DEL MULTIPLICADOR (M4) HASTA QUE LA CORRIENTE EQUIVALENTE DE LA SALIDA DEL ACUMULADOR (A) SE REDUCE A CERO. PERMITE QUE LOS MULTIPLICADORES (M1, M2 Y M3) ADOPTEN SUS VALORES DE GANANCIAS OPTIMAS. DE APLICACION EN UN EQUIPO MODULADOR/DEMODULADOR (MODEM).
ES495155A 1979-09-19 1980-09-18 Perfeccionamientos en ecualizadores transversales Granted ES495155A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7932403 1979-09-19

Publications (2)

Publication Number Publication Date
ES8105909A1 true ES8105909A1 (es) 1981-06-16
ES495155A0 ES495155A0 (es) 1981-06-16

Family

ID=10507922

Family Applications (1)

Application Number Title Priority Date Filing Date
ES495155A Granted ES495155A0 (es) 1979-09-19 1980-09-18 Perfeccionamientos en ecualizadores transversales

Country Status (16)

Country Link
US (1) US4347615A (es)
EP (1) EP0026065B1 (es)
JP (1) JPS5654116A (es)
KR (1) KR830002467B1 (es)
AT (1) ATE5556T1 (es)
AU (1) AU532416B2 (es)
CA (1) CA1148224A (es)
DE (1) DE3065833D1 (es)
DK (1) DK149360C (es)
ES (1) ES495155A0 (es)
HK (1) HK77384A (es)
IE (1) IE50794B1 (es)
NO (1) NO148168C (es)
PT (1) PT71796B (es)
SG (1) SG43884G (es)
ZA (1) ZA805543B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159376B (en) * 1984-05-22 1987-08-26 Emi Ltd An echo cancelling system
GB8423017D0 (en) * 1984-09-12 1984-10-17 Plessey Co Plc Echo canceller
AR241298A1 (es) * 1985-10-03 1992-04-30 Siemens Ag Ecualizador transversal adaptivo .
US4726036A (en) * 1987-03-26 1988-02-16 Unisys Corporation Digital adaptive filter for a high throughput digital adaptive processor
JPH01295529A (ja) * 1988-05-23 1989-11-29 Nec Corp 切り替え式クロックを有する集積回路
US4964118A (en) * 1988-10-24 1990-10-16 Northern Telecom Limited Apparatus and method for echo cancellation
JPH0453309A (ja) * 1990-06-21 1992-02-20 Nec Home Electron Ltd クロック切換回路
US5493343A (en) * 1994-12-28 1996-02-20 Thomson Consumer Electronics, Inc. Compensation for truncation error in a digital video signal decoder
US20030202612A1 (en) * 2001-12-18 2003-10-30 Bijit Halder Method and system for rate enhanced SHDSL

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH505510A (de) * 1969-08-29 1971-03-31 Patelhold Patentverwertung Verfahren zur Mitübertragung der tiefen Signalfrequenzkomponenten eines Nachrichtensignals
US3597541A (en) * 1969-12-23 1971-08-03 Sylvania Electric Prod Decision-directed adapted equalizer circuit
GB1508995A (en) * 1974-05-17 1978-04-26 Post Office Digital data transmission systems
US3949206A (en) * 1974-12-17 1976-04-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Filtering device
JPS5182548A (en) * 1974-12-27 1976-07-20 Fujitsu Ltd Jidotokaki
US3992616A (en) * 1975-06-24 1976-11-16 Honeywell Inc. Receiver equalizer apparatus

Also Published As

Publication number Publication date
DK149360B (da) 1986-05-12
ZA805543B (en) 1981-09-30
DK398580A (da) 1981-03-20
IE50794B1 (en) 1986-07-23
JPS5654116A (en) 1981-05-14
SG43884G (en) 1985-09-13
NO148168B (no) 1983-05-09
JPS6335127B2 (es) 1988-07-13
PT71796B (en) 1981-07-02
EP0026065B1 (en) 1983-12-07
KR830002467B1 (ko) 1983-10-26
EP0026065A1 (en) 1981-04-01
NO802685L (no) 1981-03-20
IE801956L (en) 1981-03-19
CA1148224A (en) 1983-06-14
DK149360C (da) 1987-01-19
NO148168C (no) 1983-08-17
AU6203980A (en) 1981-03-26
US4347615A (en) 1982-08-31
AU532416B2 (en) 1983-09-29
DE3065833D1 (en) 1984-01-12
HK77384A (en) 1984-10-19
PT71796A (en) 1980-10-01
ES495155A0 (es) 1981-06-16
ATE5556T1 (de) 1983-12-15
KR830003980A (ko) 1983-06-30

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