JPH0132566B2 - - Google Patents

Info

Publication number
JPH0132566B2
JPH0132566B2 JP55090528A JP9052880A JPH0132566B2 JP H0132566 B2 JPH0132566 B2 JP H0132566B2 JP 55090528 A JP55090528 A JP 55090528A JP 9052880 A JP9052880 A JP 9052880A JP H0132566 B2 JPH0132566 B2 JP H0132566B2
Authority
JP
Japan
Prior art keywords
circuit
input
video signal
transistor
dynamic
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
JP55090528A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5717241A (en
Inventor
Koichi Hirose
Kazuo Kondo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9052880A priority Critical patent/JPS5717241A/ja
Priority to US06/279,811 priority patent/US4451746A/en
Priority to DE3126341A priority patent/DE3126341C2/de
Publication of JPS5717241A publication Critical patent/JPS5717241A/ja
Publication of JPH0132566B2 publication Critical patent/JPH0132566B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Amplifiers (AREA)
  • Television Signal Processing For Recording (AREA)
JP9052880A 1980-07-04 1980-07-04 Dynamic emphasis circuit Granted JPS5717241A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9052880A JPS5717241A (en) 1980-07-04 1980-07-04 Dynamic emphasis circuit
US06/279,811 US4451746A (en) 1980-07-04 1981-07-02 Non-linear emphasis circuit
DE3126341A DE3126341C2 (de) 1980-07-04 1981-07-03 Nichtlineare Anhebungsschaltung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9052880A JPS5717241A (en) 1980-07-04 1980-07-04 Dynamic emphasis circuit

Publications (2)

Publication Number Publication Date
JPS5717241A JPS5717241A (en) 1982-01-28
JPH0132566B2 true JPH0132566B2 (US20100012521A1-20100121-C00001.png) 1989-07-06

Family

ID=14000916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9052880A Granted JPS5717241A (en) 1980-07-04 1980-07-04 Dynamic emphasis circuit

Country Status (3)

Country Link
US (1) US4451746A (US20100012521A1-20100121-C00001.png)
JP (1) JPS5717241A (US20100012521A1-20100121-C00001.png)
DE (1) DE3126341C2 (US20100012521A1-20100121-C00001.png)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5915903U (ja) * 1982-07-21 1984-01-31 河口湖精密株式会社 デジタル測長器
DE3307014A1 (de) * 1983-02-28 1984-08-30 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Schaltung zur verbesserung der bildschaerfe bei einem videorecorder
JPS6030285A (ja) * 1983-07-29 1985-02-15 Victor Co Of Japan Ltd 映像信号記録再生装置
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
DE3410944C1 (de) * 1984-03-24 1985-05-09 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Gekapselte Meßeinrichtung
US4586760A (en) * 1984-06-01 1986-05-06 Bausch & Lomb Incorporated Measuring scale casing and mounting spar
US4730165A (en) * 1984-09-12 1988-03-08 Matsushita Electric Industrial Co., Ltd. Non-linear signal processing apparatus
US4739514A (en) * 1986-12-22 1988-04-19 Bose Corporation Automatic dynamic equalizing
JP2831996B2 (ja) * 1987-09-22 1998-12-02 キヤノン株式会社 信号記録装置
US5097336A (en) * 1987-09-22 1992-03-17 Canon Kabushiki Kaisha Signal processing apparatus
JP2937328B2 (ja) * 1988-08-08 1999-08-23 株式会社東芝 非線形エンファシス・ディエンファシス回路
US5126846A (en) * 1988-08-08 1992-06-30 Kabushiki Kaisha Toshiba Non-linear amplifier and non-linear emphasis/deemphasis circuit using the same
JPH0468923A (ja) * 1990-07-09 1992-03-04 Sony Corp ノンリニアプリエンファシス・デエンファシスシステム
US5334886A (en) * 1992-11-13 1994-08-02 International Business Machines Corporation Direct-coupled PNP transistor pull-up ECL circuits and direct-coupled complementary push-pull ECL circuits
US7016509B1 (en) 2000-09-08 2006-03-21 Harman International Industries, Inc. System and method for varying low audio frequencies inversely with audio signal level
DE10114818A1 (de) * 2001-03-26 2002-09-26 Micronas Munich Gmbh Adaptives Verfahren und Vorrichtung zur Bearbeitung eines zur Bildung eines Fernsehbildes dienenden Luminanzsignals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164309A (US20100012521A1-20100121-C00001.png) * 1974-07-19 1976-06-03 Tokyo Shibaura Electric Co
JPS5265645A (en) * 1975-11-28 1977-05-31 Toshiba Corp Noise reduction device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1046753A (en) * 1964-07-17 1966-10-26 Standard Telephones Cables Ltd Improvements in or relating to non-linear networks
CA955532A (en) * 1971-04-16 1974-10-01 Masao Tomita Automatic noise reduction system
GB1438711A (en) * 1973-01-23 1976-06-09 Dolby Laboratories Inc Calibration oscillators for noise reduction systems
US3980964A (en) * 1974-05-20 1976-09-14 Grodinsky Robert M Noise reduction circuit
US4200889A (en) * 1976-12-27 1980-04-29 Basf Aktiengesellschaft Complementary pre-emphasis and de-emphasis circuits for a video signal transfer channel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164309A (US20100012521A1-20100121-C00001.png) * 1974-07-19 1976-06-03 Tokyo Shibaura Electric Co
JPS5265645A (en) * 1975-11-28 1977-05-31 Toshiba Corp Noise reduction device

Also Published As

Publication number Publication date
DE3126341A1 (de) 1982-03-18
DE3126341C2 (de) 1984-06-28
US4451746A (en) 1984-05-29
JPS5717241A (en) 1982-01-28

Similar Documents

Publication Publication Date Title
JPH0132566B2 (US20100012521A1-20100121-C00001.png)
US4039981A (en) Variable impedance circuit
US5276403A (en) Nonlinear preemphasis-deemphasis system
JP2809856B2 (ja) 帰還型エンファシス回路
JP3151376B2 (ja) フィルタ回路
US5182520A (en) Non-linear de-emphasis circuit
JP2651865B2 (ja) 非線形信号圧縮回路
JPH0238483Y2 (US20100012521A1-20100121-C00001.png)
JPS6258169B2 (US20100012521A1-20100121-C00001.png)
JP2937328B2 (ja) 非線形エンファシス・ディエンファシス回路
JPH0150990B2 (US20100012521A1-20100121-C00001.png)
JP2751294B2 (ja) 水晶電圧制御発振器
JPS61108215A (ja) エンファシス回路
KR950001174Y1 (ko) 화상 신호 찌그러짐 보상회로
JPS6035292Y2 (ja) イコライザアンプ
JPS62285588A (ja) 等化回路装置
JPH0115024Y2 (US20100012521A1-20100121-C00001.png)
JPS6211047Y2 (US20100012521A1-20100121-C00001.png)
JPS59185007A (ja) フイ−ドバツク回路
JPS6142890B2 (US20100012521A1-20100121-C00001.png)
JPH10149504A (ja) オーディオ信号記録補償装置
JP2603647Y2 (ja) 記録再生切換回路
JP3439252B2 (ja) 記録ドライブ回路及び磁気記録装置
JP2543211B2 (ja) 磁気記録再生装置の読み出し回路
JPS59117308A (ja) ノンリニアサイドバンドエンフアシス回路