DE69117603T2 - Schaltung zur Kompensierung des Schwarzpegels - Google Patents

Schaltung zur Kompensierung des Schwarzpegels

Info

Publication number
DE69117603T2
DE69117603T2 DE69117603T DE69117603T DE69117603T2 DE 69117603 T2 DE69117603 T2 DE 69117603T2 DE 69117603 T DE69117603 T DE 69117603T DE 69117603 T DE69117603 T DE 69117603T DE 69117603 T2 DE69117603 T2 DE 69117603T2
Authority
DE
Germany
Prior art keywords
compensating
circuit
black level
black
level
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
DE69117603T
Other languages
English (en)
Other versions
DE69117603D1 (de
Inventor
Sadamatsu Hideaki
Kageyama Atsuhisa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69117603D1 publication Critical patent/DE69117603D1/de
Publication of DE69117603T2 publication Critical patent/DE69117603T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
DE69117603T 1990-07-19 1991-07-18 Schaltung zur Kompensierung des Schwarzpegels Expired - Fee Related DE69117603T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2189470A JP2599020B2 (ja) 1990-07-19 1990-07-19 黒レベル補正回路

Publications (2)

Publication Number Publication Date
DE69117603D1 DE69117603D1 (de) 1996-04-11
DE69117603T2 true DE69117603T2 (de) 1996-07-25

Family

ID=16241806

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69117603T Expired - Fee Related DE69117603T2 (de) 1990-07-19 1991-07-18 Schaltung zur Kompensierung des Schwarzpegels

Country Status (7)

Country Link
US (1) US5262862A (de)
EP (1) EP0467373B1 (de)
JP (1) JP2599020B2 (de)
KR (1) KR950007929B1 (de)
CA (1) CA2047371C (de)
DE (1) DE69117603T2 (de)
MY (1) MY107706A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391944A (en) * 1992-01-22 1995-02-21 Matsushita Electric Industrial Co., Ltd. Image-tone control circuit and gradient adjusting circuit therefor
DE4239365A1 (de) * 1992-11-24 1994-05-26 Philips Patentverwaltung Schaltungsanordnung zum Verarbeiten eines Videosignals
JP3649043B2 (ja) * 1999-06-07 2005-05-18 セイコーエプソン株式会社 画像表示装置及び方法、並びに、画像処理装置及び方法
KR100346840B1 (ko) * 1999-11-04 2002-08-03 삼성전자 주식회사 화면의 펄럭거림을 최소화하는 흑신장 장치 및 그 방법
JP3844430B2 (ja) * 2001-06-26 2006-11-15 三菱電機株式会社 映像信号処理装置および映像信号処理方法
JP3722740B2 (ja) * 2001-11-05 2005-11-30 三菱電機株式会社 映像処理装置及び映像処理方法
JP4740044B2 (ja) * 2006-06-06 2011-08-03 河村電器産業株式会社 機器収納キャビネット

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406922A1 (fr) * 1977-10-21 1979-05-18 Thomson Csf Dispositif d'expansion de contraste video et systeme comportant un tel dispositif
JPS6043972A (ja) * 1983-08-22 1985-03-08 Sony Corp 映像の黒レベル再生回路
FR2606956A1 (fr) * 1986-11-14 1988-05-20 Radiotechnique Compelec Dispositif de conversion analogique-numerique comportant un dispositif de controle automatique de gain
JP2748442B2 (ja) * 1988-10-13 1998-05-06 ソニー株式会社 カラー映像信号の処理装置
US4937671A (en) * 1988-12-28 1990-06-26 Zenith Electronics Corporation Digital video black expander
US4975773A (en) * 1989-03-31 1990-12-04 Zenith Electronics Corporation Dynamic range video black level expander

Also Published As

Publication number Publication date
US5262862A (en) 1993-11-16
JP2599020B2 (ja) 1997-04-09
CA2047371A1 (en) 1992-01-20
JPH0479482A (ja) 1992-03-12
EP0467373B1 (de) 1996-03-06
KR920003787A (ko) 1992-02-29
KR950007929B1 (ko) 1995-07-21
MY107706A (en) 1996-05-30
EP0467373A3 (en) 1992-12-09
EP0467373A2 (de) 1992-01-22
DE69117603D1 (de) 1996-04-11
CA2047371C (en) 1995-12-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee