JPS56140789A - Color balance control circuit - Google Patents

Color balance control circuit

Info

Publication number
JPS56140789A
JPS56140789A JP4372980A JP4372980A JPS56140789A JP S56140789 A JPS56140789 A JP S56140789A JP 4372980 A JP4372980 A JP 4372980A JP 4372980 A JP4372980 A JP 4372980A JP S56140789 A JPS56140789 A JP S56140789A
Authority
JP
Japan
Prior art keywords
color balance
level
controller
control
color
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
JP4372980A
Other languages
Japanese (ja)
Other versions
JPH0113677B2 (en
Inventor
Hiroshi Take
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP4372980A priority Critical patent/JPS56140789A/en
Publication of JPS56140789A publication Critical patent/JPS56140789A/en
Publication of JPH0113677B2 publication Critical patent/JPH0113677B2/ja
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
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

PURPOSE:To reduce the time required for a control of color balance, by providing a level detecting means that detects the fact that the output level of pickup tube is set at a level appropriate to the color balance control on the basis of an automatic control of the aperture state of iris. CONSTITUTION:The color balance control circuit consists of an iris 11, a level detecting means 30, a level comparing means 33 that compares plural color signal levels meaning the output of a pickup tube based on the level of a color signal, a gain control means 34 that varies the relative levels of said color signals, and a controller 8 that controls not only the means 34 but the iris 11. A color balance control command is given to the controller 8, and then the working control signal is supplied to the means 33 from the controller 8 when the detection output is obtained from the means 30. On the basis of the comparison output of the means 33, the means 34 is controlled by the controller 8. Thus the color balance is controlled.
JP4372980A 1980-04-03 1980-04-03 Color balance control circuit Granted JPS56140789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4372980A JPS56140789A (en) 1980-04-03 1980-04-03 Color balance control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4372980A JPS56140789A (en) 1980-04-03 1980-04-03 Color balance control circuit

Publications (2)

Publication Number Publication Date
JPS56140789A true JPS56140789A (en) 1981-11-04
JPH0113677B2 JPH0113677B2 (en) 1989-03-07

Family

ID=12671868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4372980A Granted JPS56140789A (en) 1980-04-03 1980-04-03 Color balance control circuit

Country Status (1)

Country Link
JP (1) JPS56140789A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178085A (en) * 1983-03-28 1984-10-09 Sony Corp Level adjusting circuit
JPS60105390A (en) * 1983-11-11 1985-06-10 Matsushita Electric Ind Co Ltd Camera device
US4843456A (en) * 1986-07-24 1989-06-27 Minolta Camera Kabushiki Kaisha White balance adjusting device for a color video camera
JPH0344976U (en) * 1989-09-12 1991-04-25

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178085A (en) * 1983-03-28 1984-10-09 Sony Corp Level adjusting circuit
JPS60105390A (en) * 1983-11-11 1985-06-10 Matsushita Electric Ind Co Ltd Camera device
JPH0448032B2 (en) * 1983-11-11 1992-08-05 Matsushita Electric Ind Co Ltd
US4843456A (en) * 1986-07-24 1989-06-27 Minolta Camera Kabushiki Kaisha White balance adjusting device for a color video camera
JPH0344976U (en) * 1989-09-12 1991-04-25

Also Published As

Publication number Publication date
JPH0113677B2 (en) 1989-03-07

Similar Documents

Publication Publication Date Title
EP0361452A3 (en) Digital automatic gain control apparatus and method
DE3172455D1 (en) Television cameras
JPS57108436A (en) Speed controller of engine
JPS56140789A (en) Color balance control circuit
JPS56156053A (en) Waveform shaping circuit
JPS5771132A (en) Exposure controlling system
JPS56115023A (en) Automatic threshold level controlling circuit
JPS56169406A (en) Level adjuster
JPS5799010A (en) High dynamic range digital agc system
JPS56125758A (en) Speed controlling device for electrophotographic copier
JPS56102108A (en) Automatic gain controller
JPS56104594A (en) Automatic color balance device
JPS5684013A (en) Automatic level regulator for sound signal
JPS5714206A (en) Automatic controller for audio level
JPS5679511A (en) Automatic gain control circuit
JPS6455995A (en) Automatic white balance correcting device
JPS5714205A (en) Automatic controller for audio level
JPS6460090A (en) Automatic white balance control circuit
JPS57138429A (en) Controller of electromagnetic clutch for vehicle
JPS5379453A (en) Automatic gain control system
JPS551037A (en) Image signal processor
JPS6423688A (en) Automatic gain control circuit
JPS5733416A (en) Automatic gain control processing system
JPS57164669A (en) Automatic beam controlling method for image pickup tube
JPS57188163A (en) Signal discriminator