FR2451684A1 - Appareil de controle automatique d'exposition pour cameras de television - Google Patents

Appareil de controle automatique d'exposition pour cameras de television

Info

Publication number
FR2451684A1
FR2451684A1 FR8005373A FR8005373A FR2451684A1 FR 2451684 A1 FR2451684 A1 FR 2451684A1 FR 8005373 A FR8005373 A FR 8005373A FR 8005373 A FR8005373 A FR 8005373A FR 2451684 A1 FR2451684 A1 FR 2451684A1
Authority
FR
France
Prior art keywords
signal
modulation
derived
automatic exposure
television cameras
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.)
Granted
Application number
FR8005373A
Other languages
English (en)
French (fr)
Other versions
FR2451684B1 (enExample
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2451684A1 publication Critical patent/FR2451684A1/fr
Application granted granted Critical
Publication of FR2451684B1 publication Critical patent/FR2451684B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
FR8005373A 1979-03-13 1980-03-11 Appareil de controle automatique d'exposition pour cameras de television Granted FR2451684A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2897779A JPS55121778A (en) 1979-03-13 1979-03-13 Automatic controller for sensitivity of television camera

Publications (2)

Publication Number Publication Date
FR2451684A1 true FR2451684A1 (fr) 1980-10-10
FR2451684B1 FR2451684B1 (enExample) 1984-12-14

Family

ID=12263470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005373A Granted FR2451684A1 (fr) 1979-03-13 1980-03-11 Appareil de controle automatique d'exposition pour cameras de television

Country Status (5)

Country Link
US (1) US4318132A (enExample)
JP (1) JPS55121778A (enExample)
DE (1) DE3009507C2 (enExample)
FR (1) FR2451684A1 (enExample)
GB (1) GB2052912B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586151A1 (fr) * 1985-08-06 1987-02-13 Thomson Csf Dispositif de commande automatique de reglage de l'eclairement pour systemes de prise de vues de television

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56104579A (en) * 1980-01-23 1981-08-20 Nec Corp Television camera device
JPS56119820A (en) * 1980-02-27 1981-09-19 Canon Inc Photometric system
JPS5741079A (en) * 1980-08-26 1982-03-06 Asahi Optical Co Ltd Automatic television camera exposure device by division of picture
JPS5783971A (en) * 1980-11-13 1982-05-26 Asahi Optical Co Ltd Spot exposure control circuit
JP2501782B2 (ja) * 1983-09-16 1996-05-29 株式会社ニコン 画像走査装置
US4581648A (en) * 1984-06-07 1986-04-08 Lenzar Optics Corporation Video camera system
JPS6119285A (ja) * 1984-07-06 1986-01-28 Hitachi Ltd ビデオカメラのアイリス制御方法
US4599654A (en) * 1984-10-31 1986-07-08 Rca Corporation Dark current eliminator useful for auto-iris controller
JP2513849Y2 (ja) * 1989-09-29 1996-10-09 アイワ株式会社 ビデオカメラ
JPH07299029A (ja) * 1994-03-11 1995-11-14 Olympus Optical Co Ltd 内視鏡装置
KR19980020968A (ko) * 1996-09-13 1998-06-25 구자홍 영상표시기기의 휘도조정장치

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244440A (en) * 1968-06-05 1971-09-02 Western Electric Co Improvements in or relating to control of video signal levels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445590A (en) * 1965-03-19 1969-05-20 Rca Corp Coordinated sensitivity and amplification control system
JPS4944771A (enExample) * 1972-08-31 1974-04-27
AT329652B (de) * 1974-11-13 1976-05-25 Eumig Verfahren zur steuerung einer fernsehkamera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1244440A (en) * 1968-06-05 1971-09-02 Western Electric Co Improvements in or relating to control of video signal levels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/78 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586151A1 (fr) * 1985-08-06 1987-02-13 Thomson Csf Dispositif de commande automatique de reglage de l'eclairement pour systemes de prise de vues de television
EP0215694A1 (fr) * 1985-08-06 1987-03-25 Thomson-Csf Dispositif de commande automatique de réglage de l'éclairement pour système de prise de vues de télévision

Also Published As

Publication number Publication date
JPS55121778A (en) 1980-09-19
GB2052912B (en) 1983-04-27
FR2451684B1 (enExample) 1984-12-14
DE3009507A1 (de) 1980-09-18
DE3009507C2 (de) 1984-01-05
GB2052912A (en) 1981-01-28
US4318132A (en) 1982-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse