KR840008901A - 자동등화기 - Google Patents

자동등화기 Download PDF

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Publication number
KR840008901A
KR840008901A KR1019840002680A KR840002680A KR840008901A KR 840008901 A KR840008901 A KR 840008901A KR 1019840002680 A KR1019840002680 A KR 1019840002680A KR 840002680 A KR840002680 A KR 840002680A KR 840008901 A KR840008901 A KR 840008901A
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KR
South Korea
Prior art keywords
tap
gain
tab
waveform
main
Prior art date
Application number
KR1019840002680A
Other languages
English (en)
Other versions
KR890004207B1 (ko
Inventor
쥰죠오 무라까미
Original Assignee
사바 쇼오이찌
가부시기 가이샤 도시바
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 사바 쇼오이찌, 가부시기 가이샤 도시바 filed Critical 사바 쇼오이찌
Publication of KR840008901A publication Critical patent/KR840008901A/ko
Application granted granted Critical
Publication of KR890004207B1 publication Critical patent/KR890004207B1/ko

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Picture Signal Circuits (AREA)

Abstract

내용 없음

Description

자동등화기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 종래의 자동등화기의 구성도.
제2도는 본 발명의 1실시예에 관한 자동등화기의 구성도.

Claims (1)

  1. 소정형상의 파형이 주기적으로 존재하는 수신신호가 입력되는 탭이득 가변의 트랜스버어설 휠터를 포함하는 파형등화 회로와, 상기 트랜스버어설 휠터의 탭이득을 상기 수신신호중의 소정형상의 파형에 대응하는 상기 파형등화회로의 출력파형이 사전에 정한 기준파형에 근사하도록 축차수정하는 택이득 수정수단을 구비한 자동등화기에 있어서, 상기 탭이득 수정수단은 탭이득 수정제어에 탭이득이 탭이득 최대로 되도록 주탭에 대하여 사전에 정한 비 0의 P로, 주탭이외의 탭에 대하여서는 0에 각기 향하는 방향으로 티이크를 부여하는 수단과, 이 수단에 의해 부가되는 티이크의 크기를
    Co : 주탭의 탭이득, Ci : 제1탭의 탭이득,의 범위 : 주탭을 제외한 모든 탭이득가변의 탭으로 정의되는 값 A에 응하여서 증감시크는 수단을 포함하는 것을 특징으로 하는 자동등화기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840002680A 1983-05-17 1984-05-17 자동등화기 KR890004207B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58086052A JPS59211313A (ja) 1983-05-17 1983-05-17 自動等化器
JP86052 1983-05-17
JP58-086052 1983-05-17

Publications (2)

Publication Number Publication Date
KR840008901A true KR840008901A (ko) 1984-12-19
KR890004207B1 KR890004207B1 (ko) 1989-10-27

Family

ID=13875910

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840002680A KR890004207B1 (ko) 1983-05-17 1984-05-17 자동등화기

Country Status (5)

Country Link
US (1) US4575857A (ko)
EP (1) EP0125649B1 (ko)
JP (1) JPS59211313A (ko)
KR (1) KR890004207B1 (ko)
DE (1) DE3461585D1 (ko)

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US4695969A (en) * 1984-12-17 1987-09-22 American Telephone And Telegraph Company At&T Bell Laboratories Equalizer with improved performance
US4773034A (en) * 1985-05-09 1988-09-20 American Telephone And Telegraph Company Adaptive equalizer utilizing a plurality of multiplier-accumulator devices
JPS6211326A (ja) * 1985-07-09 1987-01-20 Hitachi Ltd 自動等化器再設定方式
AR241298A1 (es) * 1985-10-03 1992-04-30 Siemens Ag Ecualizador transversal adaptivo .
US4717951A (en) * 1985-10-31 1988-01-05 Rca Corporation Adaptive digital filter
DE3765947D1 (de) * 1986-01-18 1990-12-13 Hewlett Packard Ltd Beeinflussungsfreier analysator zur erfassung von kanalstoerungen.
US4759035A (en) * 1987-10-01 1988-07-19 Adtran Digitally controlled, all rate equalizer
JP2534737B2 (ja) * 1987-11-24 1996-09-18 日本電気ホームエレクトロニクス株式会社 ゴ―スト除去用フィルタ回路
US4821288A (en) * 1987-12-21 1989-04-11 Cyclotomics, Inc. Parallel channel equalizer architecture
US4864403A (en) * 1988-02-08 1989-09-05 Rca Licensing Corporation Adaptive television ghost cancellation system including filter circuitry with non-integer sample delay
MY103982A (en) * 1988-03-22 1993-10-30 Nippon Denki Home Electronics Ghost canceling apparatus.
US4856031A (en) * 1988-04-28 1989-08-08 General Datacomm, Inc. Adaptive multiharmonic phase jitter compensation
US5089892A (en) * 1989-04-13 1992-02-18 Victor Company Of Japan, Ltd. Ghost canceller employing plural reference signals
US5025317A (en) * 1989-04-13 1991-06-18 Victor Company Of Japan, Ltd. Ghost canceler using reference signals to generate updated criterion functions on which tap gains are determined
US5237415A (en) * 1989-04-27 1993-08-17 Victor Company Of Japan, Ltd. Ghost canceler with adaptive transversal filter
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
JP2835098B2 (ja) * 1989-09-28 1998-12-14 株式会社東芝 ゴースト除去装置
US5216507A (en) * 1989-10-18 1993-06-01 Victor Company Of Japan, Ltd. Waveform distortion removing apparatus
US5099328A (en) * 1989-12-12 1992-03-24 Matsushita Electric Industrial Co., Ltd. Ghost canceller
EP0467412A3 (en) * 1990-07-20 1993-04-28 Fujitsu Limited Line equalizer for digital signals
US5285279A (en) * 1990-08-29 1994-02-08 Hitachi, Ltd. Ghost canceller using fuzzy control
JPH04167678A (ja) * 1990-10-29 1992-06-15 Victor Co Of Japan Ltd ゴースト除去装置
JPH06252699A (ja) * 1993-03-01 1994-09-09 Sony Corp 時分割多重化処理方式における自動等化器
US5386243A (en) * 1993-07-22 1995-01-31 Zoran Corporation Ghost signal cancellation system for television signals
US5467370A (en) * 1994-03-24 1995-11-14 Silicon Systems, Inc. Method and apparatus for an adaptive three tap transversal equalizer for partial-response signaling
KR100300954B1 (ko) * 1994-09-27 2001-10-22 윤종용 고정각속도방식의디스크재생장치의적응형등화기
IT1294878B1 (it) * 1997-09-19 1999-04-23 Alsthom Cge Alcatel Metodo per la stabilizzazione del funzionamento di equalizzatori a spaziatura frazionata e relativo sistema di implementazione.
US6163572A (en) * 1998-04-29 2000-12-19 Nortel Networks Limited Method of reducing coefficient leakage noise introduced to an equalizer during steady state operation
US6760371B1 (en) * 2000-03-22 2004-07-06 The Boeing Company Method and apparatus implementation of a zero forcing equalizer
KR100452860B1 (ko) * 2000-06-20 2004-10-14 삼성전자주식회사 훈련 신호를 이용한 적응 등화기용 필터 탭 길이 조정장치 및 방법
US6597733B2 (en) 2001-03-05 2003-07-22 Ensemble Communications, Inc. Equalizer performance enhancements for broadband wireless applications
US7577100B2 (en) * 2001-07-27 2009-08-18 Stephen Pollmann System and method for measuring signal to noise values in an adaptive wireless communication system
JP3916480B2 (ja) * 2002-02-22 2007-05-16 松下電器産業株式会社 デジタル復調装置および同期検出方法
JP3816050B2 (ja) * 2002-04-23 2006-08-30 松下電器産業株式会社 信号処理装置
KR20080083677A (ko) * 2005-12-20 2008-09-18 코닌클리케 필립스 일렉트로닉스 엔.브이. 수신기용 누설 구조
US8279915B2 (en) * 2009-04-14 2012-10-02 Applied Micro Circuits Corporation System and method for transmitter training
US8228975B2 (en) * 2009-05-27 2012-07-24 Applied Micro Circuits Corporation System and method for pre and post-tap zeroing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL171215C (nl) * 1973-03-09 1983-02-16 Trt Telecom Radio Electr Automatische egalisatie-inrichting voor een datatransmissiekanaal.
US4127874A (en) * 1976-05-27 1978-11-28 Tokyo Shibaura Electric Co., Ltd. Apparatus for removing ghost signals from received video signals
JPS57185727A (en) * 1981-05-12 1982-11-16 Victor Co Of Japan Ltd Rejector for waveform distortion
US4467441A (en) * 1982-10-08 1984-08-21 At&T Bell Laboratories Adaptive filter including controlled tap coefficient leakage

Also Published As

Publication number Publication date
JPS59211313A (ja) 1984-11-30
EP0125649B1 (en) 1986-12-03
US4575857A (en) 1986-03-11
EP0125649A1 (en) 1984-11-21
JPH0534850B2 (ko) 1993-05-25
DE3461585D1 (en) 1987-01-15
KR890004207B1 (ko) 1989-10-27

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