DE3877781D1 - Automatische verstaerkungsregelungseinrichtung fuer videosignale. - Google Patents

Automatische verstaerkungsregelungseinrichtung fuer videosignale.

Info

Publication number
DE3877781D1
DE3877781D1 DE8888420047T DE3877781T DE3877781D1 DE 3877781 D1 DE3877781 D1 DE 3877781D1 DE 8888420047 T DE8888420047 T DE 8888420047T DE 3877781 T DE3877781 T DE 3877781T DE 3877781 D1 DE3877781 D1 DE 3877781D1
Authority
DE
Germany
Prior art keywords
control device
gain control
video signals
automatic gain
automatic
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
DE8888420047T
Other languages
English (en)
Other versions
DE3877781T2 (de
Inventor
Patrick Douziech
Philippe Berger
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.)
STMicroelectronics SA
Original Assignee
SGS Thomson Microelectronics 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 SGS Thomson Microelectronics SA filed Critical SGS Thomson Microelectronics SA
Application granted granted Critical
Publication of DE3877781D1 publication Critical patent/DE3877781D1/de
Publication of DE3877781T2 publication Critical patent/DE3877781T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • 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
    • H04N5/52—Automatic gain control
    • H04N5/53—Keyed automatic gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Television Receiver Circuits (AREA)
DE8888420047T 1987-02-20 1988-02-17 Automatische verstaerkungsregelungseinrichtung fuer videosignale. Expired - Fee Related DE3877781T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8702206A FR2611337B1 (fr) 1987-02-20 1987-02-20 Dispositif de commande automatique de gain de signaux video

Publications (2)

Publication Number Publication Date
DE3877781D1 true DE3877781D1 (de) 1993-03-11
DE3877781T2 DE3877781T2 (de) 1993-08-19

Family

ID=9348125

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888420047T Expired - Fee Related DE3877781T2 (de) 1987-02-20 1988-02-17 Automatische verstaerkungsregelungseinrichtung fuer videosignale.

Country Status (6)

Country Link
US (1) US4837625A (de)
EP (1) EP0279755B1 (de)
JP (1) JPS63215276A (de)
KR (1) KR880010565A (de)
DE (1) DE3877781T2 (de)
FR (1) FR2611337B1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121117A (en) * 1991-03-19 1992-06-09 Zenith Electronics Corporation Balanced A/D converter
JPH0537819A (ja) * 1991-07-31 1993-02-12 Matsushita Electric Ind Co Ltd 振幅制御回路
DE4203717A1 (de) * 1992-02-08 1993-08-12 Philips Patentverwaltung Schaltung zur adaptiven weisskompression von videosignalen
KR0134487B1 (ko) * 1993-03-23 1998-04-23 배순훈 캠코더 화면의 주변부 명암 보정 회로
US5841488A (en) * 1995-12-28 1998-11-24 Thomson Consumer Electronics, Inc. Multiple video input clamping arrangement
KR100207713B1 (ko) * 1997-01-17 1999-07-15 윤종용 아날로그-디지탈 변환기의 top 전압을 이용한 agc 회로
US6462770B1 (en) 1998-04-20 2002-10-08 Xillix Technologies Corp. Imaging system with automatic gain control for reflectance and fluorescence endoscopy
US6567124B1 (en) 1999-12-01 2003-05-20 Ball Aerospace & Technologies Corp. Electronic image processing technique for achieving enhanced image detail
JP4133319B2 (ja) * 2000-07-14 2008-08-13 ノバダック テクノロジーズ インコーポレイテッド コンパクトな蛍光内視鏡映像システム
US6899675B2 (en) 2002-01-15 2005-05-31 Xillix Technologies Corp. Fluorescence endoscopy video systems with no moving parts in the camera
US20060241496A1 (en) * 2002-01-15 2006-10-26 Xillix Technologies Corp. Filter for use with imaging endoscopes
WO2007106624A2 (en) 2006-02-07 2007-09-20 Novadaq Technologies Inc. Near infrared imaging
US8408269B2 (en) 2006-07-28 2013-04-02 Novadaq Technologies, Inc. System and method for deposition and removal of an optical element on an endoscope objective
US8498695B2 (en) 2006-12-22 2013-07-30 Novadaq Technologies Inc. Imaging system with a single color image sensor for simultaneous fluorescence and color video endoscopy
US20080177140A1 (en) * 2007-01-23 2008-07-24 Xillix Technologies Corp. Cameras for fluorescence and reflectance imaging
MX2010010292A (es) 2008-03-18 2011-01-25 Novadaq Technologies Inc Sistema de formacion de imagenes para la reflectancia combinada de color completo y formacion de imagenes cercanas al infrarrojo.
RU2607645C9 (ru) 2011-03-08 2017-07-25 Новадак Текнолоджис Инк. Светодиодное осветительное устройство полного спектра
AU2016351730B2 (en) 2015-11-13 2019-07-11 Novadaq Technologies Inc. Systems and methods for illumination and imaging of a target
CA3009419A1 (en) 2016-01-26 2017-08-03 Novadaq Technologies ULC Configurable platform
US10293122B2 (en) 2016-03-17 2019-05-21 Novadaq Technologies ULC Endoluminal introducer with contamination avoidance
USD916294S1 (en) 2016-04-28 2021-04-13 Stryker European Operations Limited Illumination and imaging device
CA3027592A1 (en) 2016-06-14 2017-12-21 John Josef Paul FENGLER Methods and systems for adaptive imaging for low light signal enhancement in medical visualization
US11140305B2 (en) 2017-02-10 2021-10-05 Stryker European Operations Limited Open-field handheld fluorescence imaging systems and methods

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1077304B (it) * 1976-06-23 1985-05-04 Eaton Corp Regolatore per dispositivi azionati dalla pressione di un fluido
JPS5619291A (en) * 1979-07-25 1981-02-23 Sony Corp Chroma level control circuit
US4408229A (en) * 1981-05-29 1983-10-04 Rca Corporation Noise sensitivity reduction apparatus for a TV receiver AGC system
JPS58111587A (ja) * 1981-12-25 1983-07-02 Hitachi Ltd 自動利得制御用回路
US4472707A (en) * 1982-06-18 1984-09-18 Allied Corporation Display processor digital automatic gain control providing enhanced resolution and accuracy
US4485396A (en) * 1982-09-16 1984-11-27 Ampex Corporation Automatic chroma filter
JPS6053384A (ja) * 1983-09-02 1985-03-27 Hoei:Kk レベル検出回路
US4745411A (en) * 1986-10-29 1988-05-17 Kaiser Electronics Digital gain adjustment
JPH111587A (ja) * 1997-06-13 1999-01-06 Asahi Chem Ind Co Ltd 難燃性スチレン系樹脂組成物

Also Published As

Publication number Publication date
FR2611337A1 (fr) 1988-08-26
EP0279755B1 (de) 1993-01-27
US4837625A (en) 1989-06-06
EP0279755A1 (de) 1988-08-24
DE3877781T2 (de) 1993-08-19
KR880010565A (ko) 1988-10-10
FR2611337B1 (fr) 1989-05-26
JPS63215276A (ja) 1988-09-07

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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