IT1092672B - Telecamera comprendente un sistema di controllo del diaframma e un circuito controllabile per l'amplificazione di segnali rappresentativi di immagini - Google Patents

Telecamera comprendente un sistema di controllo del diaframma e un circuito controllabile per l'amplificazione di segnali rappresentativi di immagini

Info

Publication number
IT1092672B
IT1092672B IT20382/78A IT2038278A IT1092672B IT 1092672 B IT1092672 B IT 1092672B IT 20382/78 A IT20382/78 A IT 20382/78A IT 2038278 A IT2038278 A IT 2038278A IT 1092672 B IT1092672 B IT 1092672B
Authority
IT
Italy
Prior art keywords
amplification
control system
image signals
representative image
camera including
Prior art date
Application number
IT20382/78A
Other languages
English (en)
Other versions
IT7820382A0 (it
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 IT7820382A0 publication Critical patent/IT7820382A0/it
Application granted granted Critical
Publication of IT1092672B publication Critical patent/IT1092672B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Exposure Control For Cameras (AREA)
IT20382/78A 1977-02-21 1978-02-17 Telecamera comprendente un sistema di controllo del diaframma e un circuito controllabile per l'amplificazione di segnali rappresentativi di immagini IT1092672B (it)

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 (2)

Publication Number Publication Date
IT7820382A0 IT7820382A0 (it) 1978-02-17
IT1092672B true IT1092672B (it) 1985-07-12

Family

ID=19828014

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20382/78A IT1092672B (it) 1977-02-21 1978-02-17 Telecamera comprendente un sistema di controllo del diaframma e un circuito controllabile per l'amplificazione di segnali rappresentativi di immagini

Country Status (12)

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

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 (it) * 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
JPS59126311A (ja) 1983-01-07 1984-07-20 Sony Corp Ａｇｃ回路
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
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 (it) * 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
US4174526A (en) 1979-11-13
IT7820382A0 (it) 1978-02-17
DE2805357A1 (de) 1978-08-24
AU511360B2 (en) 1980-08-14
AU3335878A (en) 1979-08-23
FR2381429A1 (fr) 1978-09-15
NL7701811A (nl) 1978-08-23
GB1553964A (en) 1979-10-17
JPS6022863B2 (ja) 1985-06-04
AT363527B (de) 1981-08-10
DE2805357C2 (de) 1984-10-31
CA1134025A (en) 1982-10-19
BR7801008A (pt) 1978-10-31
JPS53103317A (en) 1978-09-08
SE7801827L (sv) 1978-08-22
FR2381429B1 (it) 1985-03-01
ATA120278A (de) 1981-01-15

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