BR7801008A - Camara de televisao com controle de diafragma e circuito controlavel de amplificacao de sinais de imagem - Google Patents

Camara de televisao com controle de diafragma e circuito controlavel de amplificacao de sinais de imagem

Info

Publication number
BR7801008A
BR7801008A BR7801008A BR7801008A BR7801008A BR 7801008 A BR7801008 A BR 7801008A BR 7801008 A BR7801008 A BR 7801008A BR 7801008 A BR7801008 A BR 7801008A BR 7801008 A BR7801008 A BR 7801008A
Authority
BR
Brazil
Prior art keywords
image signal
signal amplification
television camera
diaphragm control
controllable circuit
Prior art date
Application number
BR7801008A
Other languages
English (en)
Inventor
M Geurts
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BR7801008A publication Critical patent/BR7801008A/pt

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
    • H04N23/72—Combination of two or more compensation controls
    • 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
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals
BR7801008A 1977-02-21 1978-02-20 Camara de televisao com controle de diafragma e circuito controlavel de amplificacao de sinais de imagem BR7801008A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7701811A NL7701811A (nl) 1977-02-21 1977-02-21 Televisiekamera voorzien van een diafragma- regeling en een regelbare beeldsignaalver- sterkingsschakeling.

Publications (1)

Publication Number Publication Date
BR7801008A true BR7801008A (pt) 1978-10-31

Family

ID=19828014

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7801008A BR7801008A (pt) 1977-02-21 1978-02-20 Camara de televisao com controle de diafragma e circuito controlavel de amplificacao de sinais de imagem

Country Status (12)

Country Link
US (1) US4174526A (pt)
JP (1) JPS6022863B2 (pt)
AT (1) AT363527B (pt)
AU (1) AU511360B2 (pt)
BR (1) BR7801008A (pt)
CA (1) CA1134025A (pt)
DE (1) DE2805357C2 (pt)
FR (1) FR2381429A1 (pt)
GB (1) GB1553964A (pt)
IT (1) IT1092672B (pt)
NL (1) NL7701811A (pt)
SE (1) SE7801827L (pt)

Families Citing this family (15)

* 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
US4439789A (en) * 1980-04-11 1984-03-27 Coulter Systems Corporation Binary scan system
JPS56153327A (en) * 1980-04-28 1981-11-27 Olympus Optical Co Ltd Iris servo device
JPS5796422U (pt) * 1980-12-01 1982-06-14
JPS5797275A (en) * 1980-12-08 1982-06-16 Sony Corp Television camera
JPS57200017A (en) * 1981-06-03 1982-12-08 Sony Corp Aperture locking device
JPS58173980A (ja) * 1982-04-02 1983-10-12 アムペックス　コ−ポレ−ション テレビカメラの焦点深度を変える方法
JPS6064580A (ja) * 1983-09-19 1985-04-13 Asahi Seimitsu Kk Ｃｃｔｖカメラ用レンズの自動絞り制御装置
JPS6069967A (ja) * 1983-09-26 1985-04-20 Asahi Seimitsu Kk Ｃｃｔｖカメラ用レンズの自動絞り制御装置
US4535758A (en) * 1983-10-07 1985-08-20 Welch Allyn Inc. Signal level control for video system
US4833536A (en) * 1984-07-24 1989-05-23 Canon Kabushiki Kaisha Image sensing apparatus with sensitivity and exposure control
JPS62202595A (ja) * 1986-02-28 1987-09-07 シャープ株式会社 回路基板の接続装置
JP2763302B2 (ja) * 1988-08-31 1998-06-11 キヤノン株式会社 カメラ、レンズユニット及び撮像装置
JP3576710B2 (ja) * 1996-07-26 2004-10-13 キヤノン株式会社 撮像システム
US7796830B2 (en) * 2006-08-15 2010-09-14 Nokia Corporation Adaptive contrast optimization of digital color images

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE631115A (pt) * 1963-04-16
US3389221A (en) * 1964-04-29 1968-06-18 Westinghouse Electric Corp Television brightness compensation system
US3555181A (en) * 1968-06-05 1971-01-12 Bell Telephone Labor Inc Automatic video level control employing iris and amplifier gain adjustments

Also Published As

Publication number Publication date
IT1092672B (it) 1985-07-12
NL7701811A (nl) 1978-08-23
AT363527B (de) 1981-08-10
IT7820382A0 (it) 1978-02-17
SE7801827L (sv) 1978-08-22
FR2381429B1 (pt) 1985-03-01
JPS53103317A (en) 1978-09-08
AU3335878A (en) 1979-08-23
JPS6022863B2 (ja) 1985-06-04
FR2381429A1 (fr) 1978-09-15
DE2805357A1 (de) 1978-08-24
CA1134025A (en) 1982-10-19
ATA120278A (de) 1981-01-15
AU511360B2 (en) 1980-08-14
DE2805357C2 (de) 1984-10-31
US4174526A (en) 1979-11-13
GB1553964A (en) 1979-10-17

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