ATA120278A - Fernsehkamera mit einer blendenregelung und einer regelbaren bildsignalverstaerkungs- schaltung - Google Patents

Fernsehkamera mit einer blendenregelung und einer regelbaren bildsignalverstaerkungs- schaltung

Info

Publication number
ATA120278A
ATA120278A AT120278A AT120278A ATA120278A AT A120278 A ATA120278 A AT A120278A AT 120278 A AT120278 A AT 120278A AT 120278 A AT120278 A AT 120278A AT A120278 A ATA120278 A AT A120278A
Authority
AT
Austria
Prior art keywords
image signal
television camera
signal enhancement
enhancement circuit
iris control
Prior art date
Application number
AT120278A
Other languages
English (en)
Other versions
AT363527B (de
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 ATA120278A publication Critical patent/ATA120278A/de
Application granted granted Critical
Publication of AT363527B publication Critical patent/AT363527B/de

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)
AT0120278A 1977-02-21 1978-02-20 Fernsehkamera mit einer blendenregelung und einer regelbaren bildsignalverstaerkungsschaltung AT363527B (de)

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
ATA120278A true ATA120278A (de) 1981-01-15
AT363527B AT363527B (de) 1981-08-10

Family

ID=19828014

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0120278A AT363527B (de) 1977-02-21 1978-02-20 Fernsehkamera mit einer blendenregelung und einer regelbaren bildsignalverstaerkungsschaltung

Country Status (12)

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

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 (de) * 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 (de) * 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
AT363527B (de) 1981-08-10
JPS6022863B2 (ja) 1985-06-04
FR2381429A1 (fr) 1978-09-15
DE2805357C2 (de) 1984-10-31
IT1092672B (it) 1985-07-12
GB1553964A (en) 1979-10-17
DE2805357A1 (de) 1978-08-24
US4174526A (en) 1979-11-13
AU511360B2 (en) 1980-08-14
IT7820382A0 (it) 1978-02-17
JPS53103317A (en) 1978-09-08
CA1134025A (en) 1982-10-19
AU3335878A (en) 1979-08-23
SE7801827L (sv) 1978-08-22
FR2381429B1 (de) 1985-03-01
NL7701811A (nl) 1978-08-23
BR7801008A (pt) 1978-10-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee