DE3677547D1 - Schaltungsanordnung zur verbesserung des kontrastes eines videobildes. - Google Patents

Schaltungsanordnung zur verbesserung des kontrastes eines videobildes.

Info

Publication number
DE3677547D1
DE3677547D1 DE8686401230T DE3677547T DE3677547D1 DE 3677547 D1 DE3677547 D1 DE 3677547D1 DE 8686401230 T DE8686401230 T DE 8686401230T DE 3677547 T DE3677547 T DE 3677547T DE 3677547 D1 DE3677547 D1 DE 3677547D1
Authority
DE
Germany
Prior art keywords
contrast
improving
video image
circuit arrangement
arrangement
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
DE8686401230T
Other languages
English (en)
Inventor
Claude Gillet
Gerard Voisin
Jerome Gouvy
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.)
Thales SA
Original Assignee
Thomson CSF 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 CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE3677547D1 publication Critical patent/DE3677547D1/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
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • 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
DE8686401230T 1985-06-07 1986-06-06 Schaltungsanordnung zur verbesserung des kontrastes eines videobildes. Expired - Fee Related DE3677547D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8508639A FR2583243B1 (fr) 1985-06-07 1985-06-07 Circuit d'amelioration du contraste d'une image video

Publications (1)

Publication Number Publication Date
DE3677547D1 true DE3677547D1 (de) 1991-03-28

Family

ID=9319992

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686401230T Expired - Fee Related DE3677547D1 (de) 1985-06-07 1986-06-06 Schaltungsanordnung zur verbesserung des kontrastes eines videobildes.

Country Status (3)

Country Link
EP (1) EP0205383B1 (de)
DE (1) DE3677547D1 (de)
FR (1) FR2583243B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2833652B2 (ja) * 1988-07-15 1998-12-09 株式会社ヤマトヤ商会 カラーテレビジヨンの画像処理方法及びその装置
JPH0799862B2 (ja) * 1991-03-22 1995-10-25 松下電器産業株式会社 階調補正装置
KR0134487B1 (ko) * 1993-03-23 1998-04-23 배순훈 캠코더 화면의 주변부 명암 보정 회로
US5870154A (en) * 1996-03-08 1999-02-09 Honeywell Inc. Signal enhancement system
WO1998039737A1 (en) * 1997-03-03 1998-09-11 Matsushita Electric Industrial Co., Ltd. Histogram generator for video signals
KR100752850B1 (ko) * 2004-12-15 2007-08-29 엘지전자 주식회사 디지털 영상 촬영장치와 방법

Family Cites Families (2)

* 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
FR2525058B1 (fr) * 1982-04-09 1986-06-06 Thomson Csf Circuit d'amelioration du contraste d'un detail d'une image video

Also Published As

Publication number Publication date
EP0205383A1 (de) 1986-12-17
FR2583243A1 (fr) 1986-12-12
EP0205383B1 (de) 1991-02-20
FR2583243B1 (fr) 1987-11-20

Similar Documents

Publication Publication Date Title
DE3689271D1 (de) Verfahren zur Bildanzeige.
DE3650382T2 (de) Gerät zur Interpolation von Bildsignalen.
DE3382798D1 (de) Elektronisches System zur Videoanzeige.
DE3382597D1 (de) Geraet zur videoaufloesung von graphiken.
DE3686848D1 (de) Bildverbesserungsschaltung.
DE3672184D1 (de) Kontrastregelung eines verarbeiteten digitalbildes.
DE3885994T2 (de) Schaltung zur Bewegungsdetektion.
DE3688045T2 (de) Bildsignalverarbeitung.
DE68919431T2 (de) Schaltung zur Verbesserung der Bildqualität.
NL191967C (nl) Kleurenbeeldopneeminrichting.
DE3675259D1 (de) Vorrichtung zur fehlerkorrektur der zeitachse von videosignalen.
DE3677547D1 (de) Schaltungsanordnung zur verbesserung des kontrastes eines videobildes.
DE3683444D1 (de) Einrichtung zur unterdrueckung des fernsehinterferenzschwundes.
BR8500488A (pt) Dispositivo de correcao de contorno de imagens de video
DE3578368D1 (de) Farbbildgeraet.
DE3681894D1 (de) Vorrichtung zur bildreproduktion mittels abtastung.
DE3576632D1 (de) Schaltung zur bearbeitung von videosignalen.
AT382488B (de) Schaltung zur farbwert-regelung eines videosignals
DE3650125D1 (de) Bildverarbeitungsverfahren.
DE3767758D1 (de) Diskriminationsschaltung zur diskrimination eines farbfernsehsystems.
DE3682606D1 (de) Farbbildgeraet.
DE3689286T2 (de) Schaltung zur Verarbeitung des Luminanzsignals.
DE3774379D1 (de) Kopiergeraet zur bildzusammensetzung.
DE68919132T2 (de) Einrichtung zur Videosignalkorrektur.
DE3682365D1 (de) Schaltung zur signalumformung waehrend des videosignal-austastintervalls.

Legal Events

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