ES489541A1 - Un dispositivo de filtro adaptativo que tiene un circuito deretardo - Google Patents

Un dispositivo de filtro adaptativo que tiene un circuito deretardo

Info

Publication number
ES489541A1
ES489541A1 ES489541A ES489541A ES489541A1 ES 489541 A1 ES489541 A1 ES 489541A1 ES 489541 A ES489541 A ES 489541A ES 489541 A ES489541 A ES 489541A ES 489541 A1 ES489541 A1 ES 489541A1
Authority
ES
Spain
Prior art keywords
circuit
adaptive filter
filter
output signal
control circuits
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
ES489541A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES489541A1 publication Critical patent/ES489541A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • 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
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Un dispositivo de filtro adaptativo que tiene un circuito de retardo, tomas intermedias del cual comprenden circuitos de control de amplitud, y que tiene un circuito determinador de diferencia por medio del cual se forma una señal de error entre una señal que está corregida por el filtro y una señal de referencia que tiene una forma de onda que corresponde sustancialmente a la forma de onda deseada de la señal corregida por el filtro, estando controlados los circuitos para obtener señales de control para los circuitos de control de amplitud por medio de esta señal de error, y que tiene un circuito de fijación de nivel para la señal corregida por el filtro, caracterizado porque la señal de referencia se obtiene de una salida de un circuito de umbral a una de cuyas entradas está aplicada la señal corregida por el filtro a través del circuito de fijación de nivel, siendo este circuito de fijación de nivel un circuito de control en el cual se corrige el nivel de la señal en la entrada del circuito de umbral por medio de una señal de control de nivel obtenida de una salida de un integrador que está controlado por la señal de error.
ES489541A 1979-03-16 1980-03-14 Un dispositivo de filtro adaptativo que tiene un circuito deretardo Expired ES489541A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7902094,A NL186990C (nl) 1979-03-16 1979-03-16 Zelfinstellend filter met een vertragingsschakeling.

Publications (1)

Publication Number Publication Date
ES489541A1 true ES489541A1 (es) 1980-09-16

Family

ID=19832820

Family Applications (1)

Application Number Title Priority Date Filing Date
ES489541A Expired ES489541A1 (es) 1979-03-16 1980-03-14 Un dispositivo de filtro adaptativo que tiene un circuito deretardo

Country Status (15)

Country Link
US (1) US4322811A (es)
JP (1) JPS55127722A (es)
AU (1) AU529578B2 (es)
BE (1) BE882247A (es)
BR (1) BR8001486A (es)
CA (1) CA1149032A (es)
DE (1) DE3009263C2 (es)
ES (1) ES489541A1 (es)
FR (1) FR2451668A1 (es)
GB (1) GB2045038B (es)
HK (1) HK47684A (es)
IT (1) IT1129428B (es)
NL (1) NL186990C (es)
SE (2) SE8001955L (es)
SG (1) SG71983G (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2079294A2 (es) * 1993-10-08 1996-01-01 Alcatel Standard Electrica Receptor a rafagas con demodulacion diferencial.

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8006543A (nl) * 1980-12-02 1982-07-01 Philips Nv Zelfinstellend filter.
JPS57122983U (es) * 1981-01-25 1982-07-31
JPS5833313A (ja) * 1981-08-21 1983-02-26 Nec Corp トランスバ−サル定利得可変等化器
DE3212056A1 (de) * 1982-04-01 1984-02-09 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren und schaltungsanordnung zur durchfuehrung des verfahrens zur adaptiven echoloeschung in endgeraeten fuer duplex-datenuebertragung ueber zweidrahtleitungen
NL8502767A (nl) * 1985-10-10 1987-05-04 Philips Nv Zelfinstellend filter.
US4797635A (en) * 1987-05-11 1989-01-10 The Boeing Company Tracking loop having nonlinear amplitude filter
US4890250A (en) * 1988-11-18 1989-12-26 Steven Levin Hybrid estimating filter
US5517527A (en) * 1992-12-11 1996-05-14 Industrial Technology Research Institute Adaptive equalizer for ISDN U-interface transceiver
TW331679B (en) * 1995-12-22 1998-05-11 Thomson Multimedia Sa Analog-to-digital converter.
US5907261A (en) * 1997-09-05 1999-05-25 Ericsson Inc. Method and apparatus for controlling signal amplitude level
DE19820909A1 (de) * 1998-05-09 1999-11-25 Thomson Brandt Gmbh Datenaufbereitungseinrichtung
US6826279B1 (en) * 2000-05-25 2004-11-30 3Com Corporation Base band echo cancellation using laguerre echo estimation
US8514012B2 (en) * 2011-05-17 2013-08-20 Nxp B.V. Pulse shaper circuit with reduced electromagnetic emission

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715670A (en) * 1971-12-20 1973-02-06 Bell Telephone Labor Inc Adaptive dc restoration in single-sideband data systems
US3814952A (en) * 1972-12-15 1974-06-04 Bell Telephone Labor Inc Dual mode video clamping circuit
US4013980A (en) * 1973-01-05 1977-03-22 Siemens Aktiengesellschaft Equalizer for partial response signals
JPS605086B2 (ja) * 1973-03-20 1985-02-08 日本電気株式会社 相関符号化デ−タ伝送における適応型自動等化器
US3895305A (en) * 1973-08-20 1975-07-15 Coulter Electronics Clamp circuits
US4044381A (en) * 1974-06-03 1977-08-23 Hitachi, Ltd. Automatic waveform equalizing system for television receiver
JPS5182548A (en) * 1974-12-27 1976-07-20 Fujitsu Ltd Jidotokaki
JPS5270707A (en) * 1975-12-09 1977-06-13 Nec Corp Automatic phase control system
FR2354003A1 (fr) * 1976-06-04 1977-12-30 Anvar Perfectionnements aux systemes de transmission de donnees
GB1536215A (en) * 1976-07-05 1978-12-20 Decca Ltd Clamping circuits for television signals
JPS54108521A (en) * 1978-02-13 1979-08-25 Nippon Hoso Kyokai <Nhk> Eliminator for television ghost signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2079294A2 (es) * 1993-10-08 1996-01-01 Alcatel Standard Electrica Receptor a rafagas con demodulacion diferencial.

Also Published As

Publication number Publication date
HK47684A (en) 1984-06-15
JPH0128535B2 (es) 1989-06-02
IT8067392A0 (it) 1980-03-13
FR2451668B1 (es) 1982-08-20
DE3009263C2 (de) 1984-06-20
GB2045038B (en) 1983-09-28
SG71983G (en) 1984-08-03
NL186990B (nl) 1990-11-16
NL186990C (nl) 1991-04-16
JPS55127722A (en) 1980-10-02
NL7902094A (nl) 1980-09-18
BE882247A (fr) 1980-09-15
AU529578B2 (en) 1983-06-09
DE3009263A1 (de) 1980-09-18
SE8001955L (sv) 1980-09-17
AU5644080A (en) 1980-09-18
FR2451668A1 (fr) 1980-10-10
BR8001486A (pt) 1980-11-11
SE442472B (sv) 1985-12-23
IT1129428B (it) 1986-06-04
GB2045038A (en) 1980-10-22
US4322811A (en) 1982-03-30
CA1149032A (en) 1983-06-28

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