JPS61163492U - - Google Patents

Info

Publication number
JPS61163492U
JPS61163492U JP1985047696U JP4769685U JPS61163492U JP S61163492 U JPS61163492 U JP S61163492U JP 1985047696 U JP1985047696 U JP 1985047696U JP 4769685 U JP4769685 U JP 4769685U JP S61163492 U JPS61163492 U JP S61163492U
Authority
JP
Japan
Prior art keywords
reference signal
level
pedestal
circuit
superimposing
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.)
Granted
Application number
JP1985047696U
Other languages
English (en)
Other versions
JPH0346632Y2 (ja
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 filed Critical
Priority to JP1985047696U priority Critical patent/JPH0346632Y2/ja
Priority to US06/839,566 priority patent/US4701786A/en
Publication of JPS61163492U publication Critical patent/JPS61163492U/ja
Application granted granted Critical
Publication of JPH0346632Y2 publication Critical patent/JPH0346632Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Description

【図面の簡単な説明】
第１図はこの考案に係るペデスタルコントロー
ル回路の一実施例を示すブロツク回路構成図、第
２図は同実施例の動作を説明するためのタイミン
グチヤート、第３図は同実施例のペデスタルコン
トロール回路を利用して各色信号を同時にペデス
タル調整する場合のブロツク回路図、第４図は従
来のペデスタル調整及びガンマ補正を行なう回路
の構成を示すブロツク回路図、第５図はペデスタ
ク補正とガンマ補正との関係を説明するための波
形図である。 １７…ガンマ補正回路、１８…調整電圧発生回
路、２１…パルス混合回路、２２，２４…クラン
プ回路、２５…サンプルホールド回路、２７…ペ
デスタル調整回路、２８…演算増幅器、２９…切
換スイツチ回路、Ｖｃｐ…コントロール電圧、Ｖ
ｐ…ペデスタルコントロール電圧、Ｐｓ…サンプ
ルパルス、Ｐｃ…切換パルス。

Claims (1)

    【実用新案登録請求の範囲】
  1. ガンマ補正を行なう前の映像信号に基準信号を
    重畳する基準信号重畳手段と、前記ガンマ補正後
    の映像信号から基準信号を検出する基準信号検出
    手段と、この手段で検出された基準信号レベルと
    ペデスタルコントロール電圧レベルとを比較して
    その比較結果に基づいて前記映像信号に重畳すべ
    き基準信号のレベルを制御する基準信号レベル制
    御手段とを具備したことを特徴とするペデスタル
    コントロール回路。
JP1985047696U 1985-03-30 1985-03-30 Expired JPH0346632Y2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1985047696U JPH0346632Y2 (ja) 1985-03-30 1985-03-30
US06/839,566 US4701786A (en) 1985-03-30 1986-03-14 Pedestal control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985047696U JPH0346632Y2 (ja) 1985-03-30 1985-03-30

Publications (2)

Publication Number Publication Date
JPS61163492U true JPS61163492U (ja) 1986-10-09
JPH0346632Y2 JPH0346632Y2 (ja) 1991-10-02

Family

ID=12782443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985047696U Expired JPH0346632Y2 (ja) 1985-03-30 1985-03-30

Country Status (2)

Country Link
US (1) US4701786A (ja)
JP (1) JPH0346632Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634774A (ja) * 1986-06-23 1988-01-09 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング ビデオ信号の非直線伝送方法および回路装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920001012B1 (ko) * 1987-07-07 1992-02-01 니뽄 덴끼 가부시끼가이샤 비데오신호 처리회로
US5298892A (en) * 1988-07-21 1994-03-29 Proxima Corporation Stacked display panel construction and method of making same
US5302946A (en) * 1988-07-21 1994-04-12 Leonid Shapiro Stacked display panel construction and method of making same
JPH0771290B2 (ja) * 1989-12-27 1995-07-31 富士写真光機株式会社 信号処理回路
US5296929A (en) * 1990-10-31 1994-03-22 Matsushita Electric Industrial Co., Ltd. Automatic correction apparatus for video signal of digital VTR
SG44027A1 (en) * 1992-03-31 1997-11-14 Minnesota Mining & Mfg Color caliberation for lcd panel
US5410365A (en) * 1992-04-02 1995-04-25 Sony Corporation Video camera with coarse analog and fine digital black level adjustment
JP3332737B2 (ja) * 1996-01-31 2002-10-07 キヤノン株式会社 信号処理回路及び液晶表示装置
JP2001022331A (ja) * 1999-07-05 2001-01-26 Alps Electric Co Ltd 画像表示装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131264B (de) * 1959-06-20 1962-06-14 Fernseh Gmbh Fernsehverstaerker mit nichtlinearer Amplitudencharakteristik
US3651248A (en) * 1969-01-11 1972-03-21 Fernseh Gmbh Black level clamping by color signal difference gated to storage during beam blocking
GB1435696A (en) * 1972-09-01 1976-05-12 Kodak Ltd Amplifier circuits
JPS5521495B2 (ja) * 1973-08-07 1980-06-10
US4038685A (en) * 1975-03-31 1977-07-26 Rca Corporation Apparatus for automatic gamma control of television color signals
JPS5427720A (en) * 1977-08-03 1979-03-02 Nec Corp Process amplifier of color pickup unit
NL7808609A (nl) * 1978-08-21 1980-02-25 Philips Nv Gammacorrectieschakeling voor een videosignaal.
JPS5820092A (ja) * 1981-07-29 1983-02-05 Toshiba Corp カラ−テレビジヨンカメラの自動調整方式
JPS5883488A (ja) * 1981-11-13 1983-05-19 Hitachi Ltd ビデオカメラの信号処理回路
JPH1076A (ja) * 1996-06-14 1998-01-06 Kagome Co Ltd 野菜汁の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634774A (ja) * 1986-06-23 1988-01-09 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング ビデオ信号の非直線伝送方法および回路装置

Also Published As

Publication number Publication date
US4701786A (en) 1987-10-20
JPH0346632Y2 (ja) 1991-10-02

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