KR900003862A - 비선형 증폭회로 및 그 비선형 증폭회로를 이용한 비선형 엠파시스·디엠파시스회로 - Google Patents
비선형 증폭회로 및 그 비선형 증폭회로를 이용한 비선형 엠파시스·디엠파시스회로 Download PDFInfo
- 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
Links
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
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)
- 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.
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) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Family Cites Families (21)
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 |
JPH0748624B2 (ja) * | 1988-06-20 | 1995-05-24 | 三菱電機株式会社 | 対数増幅器 |
US4933641A (en) * | 1988-12-22 | 1990-06-12 | Itt Corporation | Extended dynamic range logarithmic if amplifying apparatus and method |
-
1989
- 1989-08-02 US US07/388,640 patent/US5126846A/en not_active Expired - Fee Related
- 1989-08-03 EP EP89307942A patent/EP0354734B1/en not_active Expired - Lifetime
- 1989-08-03 DE DE68922542T patent/DE68922542T2/de not_active Expired - Fee Related
- 1989-08-08 KR KR1019890011281A patent/KR100219759B1/ko not_active IP Right Cessation
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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A201 | Request for examination | ||
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E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E601 | Decision to refuse application | ||
J201 | Request for trial against refusal decision | ||
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GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20040531 Year of fee payment: 6 |
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LAPS | Lapse due to unpaid annual fee |