JP3892529B2 - ビデオ画像のコントラストを調整する装置 - Google Patents

ビデオ画像のコントラストを調整する装置 Download PDF

Info

Publication number
JP3892529B2
JP3892529B2 JP13843197A JP13843197A JP3892529B2 JP 3892529 B2 JP3892529 B2 JP 3892529B2 JP 13843197 A JP13843197 A JP 13843197A JP 13843197 A JP13843197 A JP 13843197A JP 3892529 B2 JP3892529 B2 JP 3892529B2
Authority
JP
Japan
Prior art keywords
input
output
value
color difference
red
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 - Fee Related
Application number
JP13843197A
Other languages
English (en)
Japanese (ja)
Other versions
JPH1065991A (ja
JPH1065991A5 (enExample
Inventor
レンツ クノ
ハオザー ズィグリート
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.)
Vantiva SA
Original Assignee
Thomson Multimedia SA
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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Publication of JPH1065991A publication Critical patent/JPH1065991A/ja
Publication of JPH1065991A5 publication Critical patent/JPH1065991A5/ja
Application granted granted Critical
Publication of JP3892529B2 publication Critical patent/JP3892529B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
JP13843197A 1996-06-07 1997-05-28 ビデオ画像のコントラストを調整する装置 Expired - Fee Related JP3892529B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9607045 1996-06-07
FR9607045A FR2749731B1 (fr) 1996-06-07 1996-06-07 Dispositif de regulation de contraste d'image video

Publications (3)

Publication Number Publication Date
JPH1065991A JPH1065991A (ja) 1998-03-06
JPH1065991A5 JPH1065991A5 (enExample) 2005-04-07
JP3892529B2 true JP3892529B2 (ja) 2007-03-14

Family

ID=9492803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13843197A Expired - Fee Related JP3892529B2 (ja) 1996-06-07 1997-05-28 ビデオ画像のコントラストを調整する装置

Country Status (6)

Country Link
US (1) US5940144A (enExample)
EP (1) EP0812107B1 (enExample)
JP (1) JP3892529B2 (enExample)
CN (1) CN1157945C (enExample)
DE (1) DE69709576T2 (enExample)
FR (1) FR2749731B1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3494555B2 (ja) 1997-07-14 2004-02-09 株式会社日立製作所 表示装置及び表示方法
KR100333333B1 (ko) * 1998-12-22 2002-06-20 윤종용 영상신호 처리 시스템의 색신호 처리장치
JP2002077641A (ja) * 2000-08-30 2002-03-15 Matsushita Electric Ind Co Ltd ファクシミリ装置
EP1380177A1 (en) * 2001-04-11 2004-01-14 Koninklijke Philips Electronics N.V. Picture signal contrast control
JP2005057621A (ja) * 2003-08-07 2005-03-03 Sanyo Electric Co Ltd 映像信号処理回路
JP4774757B2 (ja) 2004-09-17 2011-09-14 株式会社ニコン 画像処理装置、画像処理プログラム、電子カメラ、および画像処理方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0657066B2 (ja) * 1984-12-20 1994-07-27 キヤノン株式会社 カラ−調整装置
JP2515869B2 (ja) * 1988-11-28 1996-07-10 株式会社日立製作所 ビデオ信号処理回路
FR2640839B1 (fr) * 1988-12-20 1991-03-15 Portenseigne Radiotechnique Appareil de reproduction d'image video muni d'un reglage de contraste, et procede de reglage du contraste d'un tel appareil de reproduction
US4980756A (en) * 1989-08-25 1990-12-25 Rca Licensing Corporation Control signal generator for a television system
EP0589513B1 (en) * 1992-09-22 1998-12-02 Koninklijke Philips Electronics N.V. Picture signal processor
JP2876934B2 (ja) * 1993-05-31 1999-03-31 日本電気株式会社 画像のコントラスト強調方法及び装置
JP3134660B2 (ja) * 1994-04-14 2001-02-13 松下電器産業株式会社 色変換方法および色変換装置

Also Published As

Publication number Publication date
JPH1065991A (ja) 1998-03-06
CN1172396A (zh) 1998-02-04
EP0812107A1 (en) 1997-12-10
US5940144A (en) 1999-08-17
DE69709576T2 (de) 2002-08-22
FR2749731B1 (fr) 2000-08-04
DE69709576D1 (de) 2002-02-21
CN1157945C (zh) 2004-07-14
EP0812107B1 (en) 2002-01-16
FR2749731A1 (fr) 1997-12-12

Similar Documents

Publication Publication Date Title
US4179705A (en) Method and apparatus for separation of chrominance and luminance with adaptive comb filtering in a quadrature modulated color television system
US5767899A (en) Image pickup device
EP1051042A1 (en) Image quality correction circuit
JP3134784B2 (ja) 画像合成回路
EP0340648B1 (en) Picture-quality improving circuit
JP2784839B2 (ja) 映像信号の階調補正装置
JP3892529B2 (ja) ビデオ画像のコントラストを調整する装置
EP0593962B1 (en) Color signal aperture correction system having automatically selected source signal
US6956621B2 (en) High impedance digital full line video clamp
US3952327A (en) Aperture correction circuit for television
GB2253321A (en) Chrominance filtering system
EP0427564B1 (en) Video signal processing
JPH09224186A (ja) ビデオカメラおよび輪郭補正装置
US5959694A (en) Video signal with contour adjustment processing apparatus
US4979024A (en) Vertical contour enhancement suppression circuit
JPS6226234B2 (enExample)
JP2698406B2 (ja) 撮像装置
JP2698404B2 (ja) 輝度信号処理装置
JPS6219115B2 (enExample)
JPH0654339A (ja) テレビジョン受像機
JPH01319386A (ja) カラーノイズ低減回路
WO1998018263A2 (en) Sharpness improvement
JPS62269494A (ja) デイスプレイ機器のカラ−映像信号処理回路
JPH02235495A (ja) 色差信号発生装置
JPH04329790A (ja) オートホワイトバランス補正装置

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040527

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040527

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20061107

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20061207

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees