KR900003862A - 비선형 증폭회로 및 그 비선형 증폭회로를 이용한 비선형 엠파시스·디엠파시스회로 - Google Patents

비선형 증폭회로 및 그 비선형 증폭회로를 이용한 비선형 엠파시스·디엠파시스회로 Download PDF

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Publication number
KR900003862A
KR900003862A KR1019890011281A KR890011281A KR900003862A KR 900003862 A KR900003862 A KR 900003862A KR 1019890011281 A KR1019890011281 A KR 1019890011281A KR 890011281 A KR890011281 A KR 890011281A KR 900003862 A KR900003862 A KR 900003862A
Authority
KR
South Korea
Prior art keywords
nonlinear
signal
emphasis
amplifier
input
Prior art date
Application number
KR1019890011281A
Other languages
English (en)
Other versions
KR100219759B1 (ko
Inventor
가즈하루 니이무라
Original Assignee
아오이 죠이치
가부시키가이샤 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
Priority claimed from JP19614088A external-priority patent/JP2937328B2/ja
Priority claimed from JP63229011A external-priority patent/JP2969628B2/ja
Priority claimed from JP63272913A external-priority patent/JPH02121161A/ja
Priority claimed from JP63295422A external-priority patent/JPH02141112A/ja
Application filed by 아오이 죠이치, 가부시키가이샤 도시바 filed Critical 아오이 죠이치
Publication of KR900003862A publication Critical patent/KR900003862A/ko
Application granted granted Critical
Publication of KR100219759B1 publication Critical patent/KR100219759B1/ko

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Television Signal Processing For Recording (AREA)
  • Amplifiers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

내용 없음

Description

비선형 증폭회로 및 그 비선형 증폭회로를 이요한 비선형 엠파시스ㆍ디엠파시스회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 따른 비선형 증폭회로의 회로도.
제2도는 쌍방향성 대수회로의 여러 등가회로를 나타낸 도면.
제3도는 본 발명에 기초한 비선형 엠파시스회로의 특성도.

Claims (1)

  1. 입력신호를 받아들여서 그 입력신호로부터 저역신호를 제거한 출력신호를 출력하는 저역제거필터수단과, 이 저역제거필터수단의 출력신호를 받아들이도록 되어 있으면서 입력단자 및 출력단자를 갖춘 증포기와 이 증포기의 입출력단간에 병렬로 접속된 쌍방향성 대수소자 및 저항으로 이루어져 출력신호를 발생시키도록 된 대수증폭회로수단 및, 이 대수증폭회로수단의 출력신호와 상기 입력신호를 소정의 극성관곌로 가산해서 출력신호를 출력하는 가산수단을 구비하여 구성된 비선형 증폭회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890011281A 1988-08-08 1989-08-08 비선형 증폭회로 및 비선형 증폭회로를 이용한 비선형 엠파시스.디엠파시스 회로 KR100219759B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP63-196140 1988-08-08
JP19614088A JP2937328B2 (ja) 1988-08-08 1988-08-08 非線形エンファシス・ディエンファシス回路
JP63-229011 1988-09-13
JP63229011A JP2969628B2 (ja) 1988-09-13 1988-09-13 映像信号伝送装置
JP63-272913 1988-10-31
JP63272913A JPH02121161A (ja) 1988-10-31 1988-10-31 非線形増幅回路
JP63-295422 1988-11-22
JP63295422A JPH02141112A (ja) 1988-11-22 1988-11-22 非線形増幅回路

Publications (2)

Publication Number Publication Date
KR900003862A true KR900003862A (ko) 1990-03-27
KR100219759B1 KR100219759B1 (ko) 1999-09-01

Family

ID=27475793

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890011281A KR100219759B1 (ko) 1988-08-08 1989-08-08 비선형 증폭회로 및 비선형 증폭회로를 이용한 비선형 엠파시스.디엠파시스 회로

Country Status (4)

Country Link
US (1) US5126846A (ko)
EP (1) EP0354734B1 (ko)
KR (1) KR100219759B1 (ko)
DE (1) DE68922542T2 (ko)

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JPH02301277A (ja) * 1989-05-15 1990-12-13 Toshiba Corp 映像信号の記録処理回路
JP2982233B2 (ja) * 1990-06-29 1999-11-22 ソニー株式会社 ノンリニアデエンフアシス回路
JPH04180492A (ja) * 1990-11-15 1992-06-26 Sony Corp 映像信号記録再生装置
EP0503891B1 (en) * 1991-03-14 1997-07-23 Matsushita Electric Industrial Co., Ltd. Signal processing apparatus
DE69230014T2 (de) * 1991-05-23 2000-03-23 Nec Corp., Tokio/Tokyo Logarithmischer Verstärker für Zwischenfrequenzsignale
JP2783696B2 (ja) * 1991-05-31 1998-08-06 シャープ株式会社 画質補正装置
US5200655A (en) * 1991-06-03 1993-04-06 Motorola, Inc. Temperature-independent exponential converter
US5386574A (en) * 1991-07-26 1995-01-31 Cybex Corporation Temperature compensated extended range computer communications link
US5384530A (en) * 1992-08-06 1995-01-24 Massachusetts Institute Of Technology Bootstrap voltage reference circuit utilizing an N-type negative resistance device
EP0604154B1 (en) * 1992-12-24 2000-02-09 Victor Company Of Japan, Ltd. Video signal emphasis and deemphasis method
KR0185756B1 (ko) * 1994-02-02 1999-05-15 정호선 비선형 회로와 이를 이용한 혼돈 신경망
TW257917B (en) * 1994-04-12 1995-09-21 Philips Electronics Nv Receiver comprising a pulse count FM demodulator, and pulse count FM demodulator
US5528191A (en) * 1994-09-12 1996-06-18 Fuji Photo Film Co., Ltd. Logarithmic amplifier having improved speed response
JP2000057695A (ja) * 1998-08-13 2000-02-25 Sony Corp 情報記録再生装置および方法、並びに提供媒体
JP2001126047A (ja) 1999-10-28 2001-05-11 Nippon Paper Industries Co Ltd シートカウンター装置
US7049855B2 (en) * 2001-06-28 2006-05-23 Intel Corporation Area efficient waveform evaluation and DC offset cancellation circuits
DE60130884D1 (de) * 2001-08-10 2007-11-22 Ibm Elektronische integrierte Schaltung mit nichtlinearen Vorrichtungen
US7042518B1 (en) * 2002-04-29 2006-05-09 National Semiconductor Corporation Digitally controlled variable frequency HF emphasis circuit for use in video displays
US8254595B2 (en) * 2008-03-25 2012-08-28 Qualcomm Incorporated System and method of companding an input signal of an energy detecting receiver
JP5873380B2 (ja) * 2012-04-11 2016-03-01 キヤノン株式会社 画像処理装置およびその制御方法
US10956687B1 (en) 2019-12-12 2021-03-23 Texas Instruments Incorporated Logarithmic amplifier

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136848A (en) * 1960-07-13 1964-06-09 William H Woodworth Vidicon with low impedance amplifier for extended high frequency response and improved signal to noise ratio
JPS5227728B2 (ko) * 1971-09-30 1977-07-22
US3790819A (en) * 1972-03-17 1974-02-05 Perkin Elmer Corp Log amplifier apparatus
GB1432764A (en) * 1972-05-02 1976-04-22 Dolby Laboratories Inc Compressors and noise reduction systems
US3944853A (en) * 1974-08-12 1976-03-16 Basf Aktiengesellschaft Video recorder pre-emphasis, de-emphasis circuits
JPS5161243A (en) * 1974-11-25 1976-05-27 Fuji Photo Optical Co Ltd Taisuzofukuki
US4065682A (en) * 1976-03-22 1977-12-27 Mcintosh Laboratory, Inc. Logarithmic converter
GB1579138A (en) * 1976-07-06 1980-11-12 Sony Corp Noise and cross-talk elimination in recording and reproducing video signals
GB1582983A (en) * 1976-08-09 1981-01-21 Rca Corp Colour video signal processing circuits
JPS5327010A (en) * 1976-08-25 1978-03-13 Sony Corp Signal tran smitter
JPS55117712A (en) * 1979-02-28 1980-09-10 Matsushita Electric Ind Co Ltd Noise reduction circuit of video signal recording and reproducing device
JPS5717241A (en) * 1980-07-04 1982-01-28 Hitachi Ltd Dynamic emphasis circuit
US4418317A (en) * 1981-05-18 1983-11-29 Tektronix, Inc. Logarithmic amplifier utilizing positive feedback
US4612585A (en) * 1982-09-10 1986-09-16 Hitachi, Ltd. Chrominance signal recording and reproducing apparatus
JPS6093682A (ja) * 1983-10-25 1985-05-25 Sony Corp デイジタル非線形プリエンフアシス回路
US4636655A (en) * 1983-11-11 1987-01-13 Kabushiki Kaisha Toshiba Circuit in which output circuit and operational amplifier equipped input circuit are electrically isolated
JPS60140932A (ja) * 1983-12-27 1985-07-25 Sony Corp プリエンフアシス回路
JPS6152081A (ja) * 1984-08-21 1986-03-14 Ricoh Co Ltd ビデオ信号記録再生装置
US4786970A (en) * 1987-08-26 1988-11-22 Eastman Kodak Company Logarithmic amplifier
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US4933641A (en) * 1988-12-22 1990-06-12 Itt Corporation Extended dynamic range logarithmic if amplifying apparatus and method

Also Published As

Publication number Publication date
US5126846A (en) 1992-06-30
EP0354734B1 (en) 1995-05-10
EP0354734A2 (en) 1990-02-14
DE68922542D1 (de) 1995-06-14
DE68922542T2 (de) 1995-09-14
EP0354734A3 (en) 1991-04-17
KR100219759B1 (ko) 1999-09-01

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