CA1186026A - Equalizer having a substantially constant gain at a preselected frequency - Google Patents

Equalizer having a substantially constant gain at a preselected frequency

Info

Publication number
CA1186026A
CA1186026A CA000409838A CA409838A CA1186026A CA 1186026 A CA1186026 A CA 1186026A CA 000409838 A CA000409838 A CA 000409838A CA 409838 A CA409838 A CA 409838A CA 1186026 A CA1186026 A CA 1186026A
Authority
CA
Canada
Prior art keywords
signal
gain control
signals
equalizer
control signals
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
CA000409838A
Other languages
English (en)
French (fr)
Inventor
Susumu Otani
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.)
NEC Corp
Original Assignee
Nippon Electric Co 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Application granted granted Critical
Publication of CA1186026A publication Critical patent/CA1186026A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
CA000409838A 1981-08-21 1982-08-20 Equalizer having a substantially constant gain at a preselected frequency Expired CA1186026A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP130239/1981 1981-08-21
JP56130239A JPS5833313A (ja) 1981-08-21 1981-08-21 トランスバ−サル定利得可変等化器

Publications (1)

Publication Number Publication Date
CA1186026A true CA1186026A (en) 1985-04-23

Family

ID=15029442

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000409838A Expired CA1186026A (en) 1981-08-21 1982-08-20 Equalizer having a substantially constant gain at a preselected frequency

Country Status (5)

Country Link
US (1) US4456893A (https=)
EP (1) EP0073039B1 (https=)
JP (1) JPS5833313A (https=)
CA (1) CA1186026A (https=)
DE (1) DE3264561D1 (https=)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3137679A1 (de) * 1981-09-22 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Anordnung zur uebertragung von sprache nach dem kanalvocoderprinzip
EP0105072B1 (de) * 1982-10-06 1987-05-06 Deutsche ITT Industries GmbH Integrierte Schaltung eines Digitalfilters für den Chrominanzkanal von Farbfernsehgeräten
GB8308843D0 (en) * 1983-03-30 1983-05-11 Clark A P Apparatus for adjusting receivers of data transmission channels
JPS59228409A (ja) * 1983-06-10 1984-12-21 Nec Corp 自動等化器
JPH0721843B2 (ja) * 1983-12-26 1995-03-08 株式会社日立製作所 波形等化器
JPS61102813A (ja) * 1984-10-25 1986-05-21 Hitachi Denshi Ltd 適応デイジタルフイルタ
JP2538941B2 (ja) * 1987-09-30 1996-10-02 株式会社東芝 波形等化装置
JP3011948B2 (ja) * 1989-07-31 2000-02-21 パイオニア株式会社 ディジタル等化器
US5023892A (en) * 1990-04-06 1991-06-11 Printer Systems Corporation System for detecting and correcting signal distortion
US5245556A (en) * 1992-09-15 1993-09-14 Universal Data Systems, Inc. Adaptive equalizer method and apparatus
US6115418A (en) * 1998-02-09 2000-09-05 National Semiconductor Corporation Simplified equalizer for twisted pair channel
US6415003B1 (en) 1998-09-11 2002-07-02 National Semiconductor Corporation Digital baseline wander correction circuit
US6438163B1 (en) 1998-09-25 2002-08-20 National Semiconductor Corporation Cable length and quality indicator
US6495181B1 (en) 1999-01-22 2002-12-17 Bush Brothers & Company Soak apparatus for leaching soluble constituents from insoluble materials
US6418172B1 (en) 1999-04-21 2002-07-09 National Semiconductor Corporation Look-ahead maximum likelihood sequence estimation decoder
US7254198B1 (en) 2000-04-28 2007-08-07 National Semiconductor Corporation Receiver system having analog pre-filter and digital equalizer
US7050517B1 (en) 2000-04-28 2006-05-23 National Semiconductor Corporation System and method suitable for receiving gigabit ethernet signals
CN103004098B (zh) * 2010-09-01 2014-09-03 日本电气株式会社 数字滤波器设备和数字滤波方法
JP6535188B2 (ja) * 2014-09-04 2019-06-26 日本放送協会 受信装置
US11387800B1 (en) * 2021-05-12 2022-07-12 Elite Semiconductor Microelectronics Technology Inc. Method for dynamically adjusting weighting values to equalize input signal to generate equalizer output signal and associated parametric equalizer

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2027544B2 (de) * 1970-06-04 1973-12-13 Siemens Ag, 1000 Berlin U. 8000 Muenchen Automatischer Entzerrer fur phasenmoduliert« Datensignale
US3715665A (en) * 1971-06-15 1973-02-06 Bell Telephone Labor Inc Joint initial setting of attenuator coefficients and sampling time in automatic equalizers for synchronous data transmission systems
US3723911A (en) * 1971-09-13 1973-03-27 Codex Corp Training adaptive linear filters
US3755738A (en) * 1972-05-01 1973-08-28 Bell Telephone Labor Inc Passband equalizer for phase-modulated data signals
JPS5910621B2 (ja) * 1975-01-08 1984-03-10 日本電気株式会社 デ−タ伝送復調器
US4004226A (en) * 1975-07-23 1977-01-18 Codex Corporation QAM receiver having automatic adaptive equalizer
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
US4290139A (en) * 1978-12-22 1981-09-15 General Datacomm Industries, Inc. Synchronization of a data communication receiver with a received signal
NL186990C (nl) * 1979-03-16 1991-04-16 Philips Nv Zelfinstellend filter met een vertragingsschakeling.

Also Published As

Publication number Publication date
JPS5833313A (ja) 1983-02-26
EP0073039B1 (en) 1985-07-03
DE3264561D1 (en) 1985-08-08
US4456893A (en) 1984-06-26
JPS6349928B2 (https=) 1988-10-06
EP0073039A1 (en) 1983-03-02

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry