JPS5746593A - White balance adjusting device for color video camera - Google Patents

White balance adjusting device for color video camera

Info

Publication number
JPS5746593A
JPS5746593A JP55122182A JP12218280A JPS5746593A JP S5746593 A JPS5746593 A JP S5746593A JP 55122182 A JP55122182 A JP 55122182A JP 12218280 A JP12218280 A JP 12218280A JP S5746593 A JPS5746593 A JP S5746593A
Authority
JP
Japan
Prior art keywords
white balance
voltage
switch
state
filter
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.)
Pending
Application number
JP55122182A
Other languages
Japanese (ja)
Inventor
Yoshio Komine
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55122182A priority Critical patent/JPS5746593A/en
Publication of JPS5746593A publication Critical patent/JPS5746593A/en
Pending 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 facilitate white balance adjustment, by providing a light diffusing plate, which is changed from the transparent state to the semitransparent state by applying of a voltage, in the optical path of the photographic optical system and by switching this light diffusing plate to the semitransparent state only for white balance adjustment. CONSTITUTION:A diffusion factor variable filter 7 constituted by sealing matters such as liquid crystal, where the light diffusion factor is changed by applying of a voltage, between two parallel glass plates is provided between photographic lenses 5 provided in front of an image pickup tube 6 in a color video camera. When a trigger button 9 of the camera 4 is depressed, a projecting part 11 turns on a switch 8, and a voltage is applied to the filter to change the transparent state to the semitransparent state, and a white balance adjusting circuit is operated. When the botton 9 is depressed furthermore, the switch 8 is turned off, and the filter 7 is returned to the transparent state, and a switch 10 is turned on to operate the image pickup device.
JP55122182A 1980-09-03 1980-09-03 White balance adjusting device for color video camera Pending JPS5746593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55122182A JPS5746593A (en) 1980-09-03 1980-09-03 White balance adjusting device for color video camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55122182A JPS5746593A (en) 1980-09-03 1980-09-03 White balance adjusting device for color video camera

Publications (1)

Publication Number Publication Date
JPS5746593A true JPS5746593A (en) 1982-03-17

Family

ID=14829601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55122182A Pending JPS5746593A (en) 1980-09-03 1980-09-03 White balance adjusting device for color video camera

Country Status (1)

Country Link
JP (1) JPS5746593A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972079U (en) * 1982-11-05 1984-05-16 株式会社エコ− White balance filter in video camera
JPS6033035A (en) * 1983-08-02 1985-02-20 Hochiki Corp Light damping type smoke detector
JPS63585U (en) * 1986-06-18 1988-01-05
JPH03123389U (en) * 1990-03-29 1991-12-16
US5119178A (en) * 1990-01-19 1992-06-02 U.S. Philips Corporation Video camera with manual color balance adjusting option
KR100431400B1 (en) * 1998-04-17 2004-05-14 인텔 코오퍼레이션 Calibration of digital cameras

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972079U (en) * 1982-11-05 1984-05-16 株式会社エコ− White balance filter in video camera
JPS6033035A (en) * 1983-08-02 1985-02-20 Hochiki Corp Light damping type smoke detector
JPS63585U (en) * 1986-06-18 1988-01-05
US5119178A (en) * 1990-01-19 1992-06-02 U.S. Philips Corporation Video camera with manual color balance adjusting option
JPH03123389U (en) * 1990-03-29 1991-12-16
KR100431400B1 (en) * 1998-04-17 2004-05-14 인텔 코오퍼레이션 Calibration of digital cameras

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