DE69209795T2 - Videosystem mit Weissausdehnung durch Rückkopplungssteuerung und Helligkeitskompensation - Google Patents

Videosystem mit Weissausdehnung durch Rückkopplungssteuerung und Helligkeitskompensation

Info

Publication number
DE69209795T2
DE69209795T2 DE69209795T DE69209795T DE69209795T2 DE 69209795 T2 DE69209795 T2 DE 69209795T2 DE 69209795 T DE69209795 T DE 69209795T DE 69209795 T DE69209795 T DE 69209795T DE 69209795 T2 DE69209795 T2 DE 69209795T2
Authority
DE
Germany
Prior art keywords
signal
processor
input
brightness control
brightness
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 - Lifetime
Application number
DE69209795T
Other languages
English (en)
Other versions
DE69209795D1 (de
Inventor
William Adamson Lagoni
Robert Lawrence O'brien
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.)
Technicolor USA Inc
Original Assignee
Thomson Consumer Electronics Inc
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 Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Publication of DE69209795D1 publication Critical patent/DE69209795D1/de
Application granted granted Critical
Publication of DE69209795T2 publication Critical patent/DE69209795T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—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
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
DE69209795T 1991-12-16 1992-10-15 Videosystem mit Weissausdehnung durch Rückkopplungssteuerung und Helligkeitskompensation Expired - Lifetime DE69209795T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/808,328 US5191420A (en) 1991-12-16 1991-12-16 Video system with feedback controlled "white stretch" processing and brightness compensation

Publications (2)

Publication Number Publication Date
DE69209795D1 DE69209795D1 (de) 1996-05-15
DE69209795T2 true DE69209795T2 (de) 1996-11-07

Family

ID=25198474

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69209795T Expired - Lifetime DE69209795T2 (de) 1991-12-16 1992-10-15 Videosystem mit Weissausdehnung durch Rückkopplungssteuerung und Helligkeitskompensation

Country Status (14)

Country Link
US (1) US5191420A (de)
EP (1) EP0547325B1 (de)
JP (1) JP3052029B2 (de)
KR (1) KR100257940B1 (de)
CN (1) CN1042999C (de)
AT (1) ATE136712T1 (de)
CA (1) CA2080605C (de)
DE (1) DE69209795T2 (de)
ES (1) ES2087395T3 (de)
HU (1) HU216459B (de)
MX (1) MX9207296A (de)
MY (1) MY108024A (de)
SG (1) SG77543A1 (de)
TR (1) TR26448A (de)

Families Citing this family (19)

* 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
KR100296872B1 (ko) * 1993-07-22 2001-10-24 김순택 전계방출표시소자로이루어지는디스플레이패널의자동휘도보정장치및그구동방법
US5379162A (en) * 1993-08-19 1995-01-03 International Business Machines Corporation Customized data recovery procedures selected responsive to readback errors and transducer head and disk parameters
US5515113A (en) * 1994-02-28 1996-05-07 Matsushita Electric Industrial Co., Ltd. Automatic black stretch control for a television receiver
JP3501252B2 (ja) * 1995-06-16 2004-03-02 三菱電機株式会社 階調補正装置
EP0963111A1 (de) * 1998-06-02 1999-12-08 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur dynamischen Kontrastverbesserung in Videobildern
KR100346840B1 (ko) * 1999-11-04 2002-08-03 삼성전자 주식회사 화면의 펄럭거림을 최소화하는 흑신장 장치 및 그 방법
JP3661168B2 (ja) 1999-11-25 2005-06-15 松下電器産業株式会社 階調補正装置、階調補正方法、及び映像表示装置
US6806908B2 (en) * 2001-08-10 2004-10-19 Koninklijke Philips Electronics N.V. Cathode current limiting circuit for projection television display systems
KR20050040849A (ko) * 2001-11-01 2005-05-03 톰슨 라이센싱 에스.에이. 동적 콘트라스트 개선 방법
KR100425312B1 (ko) * 2001-12-11 2004-03-30 삼성전자주식회사 자동 휘도 조정 장치 및 방법
JP2003177727A (ja) 2001-12-13 2003-06-27 Nec Viewtechnology Ltd 画像表示装置および光量調節方法
JP4313996B2 (ja) 2002-08-30 2009-08-12 トヨタ自動車株式会社 撮像装置
KR100449744B1 (ko) * 2002-10-21 2004-09-22 삼성전자주식회사 영상 처리 장치에서의 화면 밝기 제어 방법 및 장치
KR100497395B1 (ko) * 2003-06-30 2005-06-23 삼성전자주식회사 화질을 자동으로 설정하는 방법
KR100608814B1 (ko) * 2004-07-16 2006-08-08 엘지전자 주식회사 엘씨디 장치의 입력 영상 표시 방법
KR20080015626A (ko) * 2006-08-16 2008-02-20 삼성전자주식회사 영상처리장치 및 영상처리방법
JP4637812B2 (ja) * 2006-11-09 2011-02-23 オリンパス株式会社 画像信号処理装置、画像信号処理プログラム、画像信号処理方法
JP4853337B2 (ja) * 2007-03-09 2012-01-11 ソニー株式会社 信号変換装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56107674A (en) * 1980-01-31 1981-08-26 Sony Corp Gradation correcting device of video signal
US4599643A (en) * 1983-12-29 1986-07-08 Rca Corporation Apparatus responsive to plural color video signals for amplitude limiting the video signals to assist beam current limiting
US5003394A (en) * 1989-08-25 1991-03-26 Rca Licensing Corporation Dynamic video system including automatic contrast and "white-stretch" processing sections
US4980756A (en) * 1989-08-25 1990-12-25 Rca Licensing Corporation Control signal generator for a television system
US4982287A (en) * 1989-11-01 1991-01-01 Rca Licensing Corporation Control of brightness level adapted to control of contrast

Also Published As

Publication number Publication date
MY108024A (en) 1996-07-30
MX9207296A (es) 1993-11-01
JPH05308592A (ja) 1993-11-19
ES2087395T3 (es) 1996-07-16
TR26448A (tr) 1995-03-15
ATE136712T1 (de) 1996-04-15
EP0547325B1 (de) 1996-04-10
JP3052029B2 (ja) 2000-06-12
CA2080605A1 (en) 1993-06-17
EP0547325A3 (de) 1993-07-14
HUT65447A (en) 1994-06-28
KR930015795A (ko) 1993-07-24
CN1042999C (zh) 1999-04-14
CN1073567A (zh) 1993-06-23
DE69209795D1 (de) 1996-05-15
SG77543A1 (en) 2001-01-16
HU9203219D0 (en) 1993-03-01
CA2080605C (en) 1998-06-30
US5191420A (en) 1993-03-02
HU216459B (hu) 1999-06-28
EP0547325A2 (de) 1993-06-23
KR100257940B1 (ko) 2000-06-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)