FR2362540A1 - Dispositif de reglage de luminosite pour systeme de traitement de signaux video - Google Patents

Dispositif de reglage de luminosite pour systeme de traitement de signaux video

Info

Publication number
FR2362540A1
FR2362540A1 FR7725284A FR7725284A FR2362540A1 FR 2362540 A1 FR2362540 A1 FR 2362540A1 FR 7725284 A FR7725284 A FR 7725284A FR 7725284 A FR7725284 A FR 7725284A FR 2362540 A1 FR2362540 A1 FR 2362540A1
Authority
FR
France
Prior art keywords
signal processing
processing system
video signal
adjustment device
luminosity adjustment
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.)
Pending
Application number
FR7725284A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of FR2362540A1 publication Critical patent/FR2362540A1/fr
Pending 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
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)

Abstract

L'invention se rapporte à un dispositif de réglage de luminosité. Ce dispositif comprend : un moyen générateur 130 de signaux periodiques de déclenchement durant les intervalles de suppression d'image; des premier (34a-c) et second 104 moyens d'application de signaux; des premier 26a-c et second 110 moyens de fixation d'amplitude, et un moyen de réglage de luminosité 112. L'invention permet de donner une très grande étendue au réglage de la luminosité. L'invention se rapporte à la télévision en couleurs.
FR7725284A 1976-08-19 1977-08-18 Dispositif de reglage de luminosite pour systeme de traitement de signaux video Pending FR2362540A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/715,851 US4044375A (en) 1976-08-19 1976-08-19 Brightness control apparatus

Publications (1)

Publication Number Publication Date
FR2362540A1 true FR2362540A1 (fr) 1978-03-17

Family

ID=24875729

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725284A Pending FR2362540A1 (fr) 1976-08-19 1977-08-18 Dispositif de reglage de luminosite pour systeme de traitement de signaux video

Country Status (9)

Country Link
US (1) US4044375A (fr)
JP (1) JPS5324725A (fr)
AU (1) AU513605B2 (fr)
CA (1) CA1093206A (fr)
DE (1) DE2737551C3 (fr)
ES (1) ES461740A1 (fr)
FI (1) FI772430A (fr)
FR (1) FR2362540A1 (fr)
GB (1) GB1586092A (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125724A (en) * 1977-04-08 1978-11-02 Sony Corp Color television receiver
US4197557A (en) * 1977-05-05 1980-04-08 Rca Corporation Brightness control circuit employing a closed control loop
US4110787A (en) * 1977-07-28 1978-08-29 Rca Corporation Combined blanking level and kinescope bias clamp for a television signal processing system
JPS56107674A (en) * 1980-01-31 1981-08-26 Sony Corp Gradation correcting device of video signal
US4295161A (en) * 1980-04-21 1981-10-13 Rca Corporation Keyed noise filter in a television receiver
NL8100604A (nl) * 1981-02-09 1982-09-01 Philips Nv Videosignaalverwerkingsschakeling voor een kleurentelevisie-ontvanger.
US4527197A (en) * 1981-08-27 1985-07-02 Global Navigation, Inc. Cathode ray tube digital brightness control circuit
US4376288A (en) * 1981-08-27 1983-03-08 Rca Corporation Signal gain control with DC compensation
US4599651A (en) * 1984-11-28 1986-07-08 Rca Corporation Pulse amplifier in a brightness control system
US4599641A (en) * 1984-11-28 1986-07-08 Rca Corporation Brightness control apparatus for a video signal processing system
US4660083A (en) * 1985-10-29 1987-04-21 Rca Corporation Video display system with stabilized background level
JPH0684690B2 (ja) * 1986-06-05 1994-10-26 株式会社間組 建造物の地下階増築方法
JPH05316534A (ja) * 1992-05-06 1993-11-26 Sony Corp Ｃｒｔ表示装置のホワイトバランス調整方法とその装置、および、テレビジョン受像機
JP3267061B2 (ja) * 1994-08-29 2002-03-18 松下電器産業株式会社 Ａｂｌ回路とａｃｌ回路と輝度・色差信号処理回路とテレビジョン受像機
US5956014A (en) * 1994-10-19 1999-09-21 Fujitsu Limited Brightness control and power control of display device
CN1135140A (zh) * 1995-02-27 1996-11-06 松下电器产业株式会社 用于多重图像显示的补偿电压发生装置及其视频显示装置
KR100323012B1 (ko) * 1998-06-26 2002-02-09 다카노 야스아키 화이트 밸런스 조정 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927255A (en) * 1974-05-01 1975-12-16 Rca Corp Black level clamping circuit for a television signal processor
US3970895A (en) * 1974-09-09 1976-07-20 Rca Corporation Circuit for maintaining operating point stability of an amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4828316B1 (fr) * 1969-10-09 1973-08-31
GB1400427A (en) * 1971-11-08 1975-07-16 Rca Corp Video signal processing apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927255A (en) * 1974-05-01 1975-12-16 Rca Corp Black level clamping circuit for a television signal processor
US3970895A (en) * 1974-09-09 1976-07-20 Rca Corporation Circuit for maintaining operating point stability of an amplifier

Also Published As

Publication number Publication date
FI772430A (fi) 1978-02-20
DE2737551C3 (de) 1980-10-09
DE2737551B2 (de) 1980-02-14
US4044375A (en) 1977-08-23
CA1093206A (fr) 1981-01-06
ES461740A1 (es) 1978-05-16
GB1586092A (en) 1981-03-18
AU513605B2 (en) 1980-12-11
DE2737551A1 (de) 1978-02-23
JPS5324725A (en) 1978-03-07
AU2788177A (en) 1979-02-22

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