JPS6446391A - Method and device for automatically adjusting white balance - Google Patents

Method and device for automatically adjusting white balance

Info

Publication number
JPS6446391A
JPS6446391A JP20250987A JP20250987A JPS6446391A JP S6446391 A JPS6446391 A JP S6446391A JP 20250987 A JP20250987 A JP 20250987A JP 20250987 A JP20250987 A JP 20250987A JP S6446391 A JPS6446391 A JP S6446391A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
color
integrated
color difference
difference signal
level
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
JP20250987A
Other versions
JP2618908B2 (en )
Inventor
Yukihiro Kawada
Yoshiaki Nakayama
Original Assignee
Fuji Photo Film Co Ltd
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

Links

Abstract

PURPOSE:To attain satisfactory white balance adjustment by blanking a color when there is the strong color (the color of large saturation) in a pattern or limiting the size of the color to a prescribed level and averaging it. CONSTITUTION:When color difference signals (ER-EY) and (EB-EY) generated from a signal obtained by photographing an object are respectively integrated and the mean value of the whole of a screen is obtained, the color difference signal stronger than a level(slice level) (the strong color difference signal) is not integrated but in place of the strong color difference signal, the prescribed level to show the color difference signal weaker than the slice level is integrated. Namely, even when the average of the whole screen of an original picture is not gray, information to remove a strong color from the original picture are integrated. Thus, approach to the gray can be executed. Thus, the erroneous control of a color failure can be erased.
JP20250987A 1987-08-13 1987-08-13 Automatic white balance adjustment method and apparatus Expired - Fee Related JP2618908B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20250987A JP2618908B2 (en) 1987-08-13 1987-08-13 Automatic white balance adjustment method and apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP20250987A JP2618908B2 (en) 1987-08-13 1987-08-13 Automatic white balance adjustment method and apparatus
US07231474 US4883360A (en) 1987-08-13 1988-08-12 Method and apparatus for automatically adjusting white balance
KR880010346A KR920004571B1 (en) 1987-08-13 1988-08-13 Method and device for automatically adjusting white balance

Publications (2)

Publication Number Publication Date
JPS6446391A true true JPS6446391A (en) 1989-02-20
JP2618908B2 JP2618908B2 (en) 1997-06-11

Family

ID=16458660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20250987A Expired - Fee Related JP2618908B2 (en) 1987-08-13 1987-08-13 Automatic white balance adjustment method and apparatus

Country Status (1)

Country Link
JP (1) JP2618908B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010393A (en) * 1988-08-30 1991-04-23 Fuji Photo Film Co., Ltd. Method and apparatus for adjusting chroma
JPH03198494A (en) * 1989-12-26 1991-08-29 Sanyo Electric Co Ltd White balance controller
JPH03232391A (en) * 1990-02-07 1991-10-16 Sanyo Electric Co Ltd White balance controller
JPH03250992A (en) * 1990-02-28 1991-11-08 Sanyo Electric Co Ltd White balance adjustment device
US5555022A (en) * 1989-11-17 1996-09-10 Sanyo Electric Co., Ltd. White balance adjusting apparatus for automatically adjusting white balance in response to color information signal obtained from image sensing device
CN101976540A (en) * 2010-11-22 2011-02-16 天津三星电子显示器有限公司 Method for automatically adjusting grey-scale consistency of display

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186188A (en) * 1984-03-06 1985-09-21 Fuji Photo Film Co Ltd Automatic white balance adjusting device of color video camera
JPS62143591A (en) * 1985-12-18 1987-06-26 Sanyo Electric Co Ltd White balance correction control circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186188A (en) * 1984-03-06 1985-09-21 Fuji Photo Film Co Ltd Automatic white balance adjusting device of color video camera
JPS62143591A (en) * 1985-12-18 1987-06-26 Sanyo Electric Co Ltd White balance correction control circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010393A (en) * 1988-08-30 1991-04-23 Fuji Photo Film Co., Ltd. Method and apparatus for adjusting chroma
US5555022A (en) * 1989-11-17 1996-09-10 Sanyo Electric Co., Ltd. White balance adjusting apparatus for automatically adjusting white balance in response to color information signal obtained from image sensing device
JPH03198494A (en) * 1989-12-26 1991-08-29 Sanyo Electric Co Ltd White balance controller
JPH03232391A (en) * 1990-02-07 1991-10-16 Sanyo Electric Co Ltd White balance controller
JPH03250992A (en) * 1990-02-28 1991-11-08 Sanyo Electric Co Ltd White balance adjustment device
CN101976540A (en) * 2010-11-22 2011-02-16 天津三星电子显示器有限公司 Method for automatically adjusting grey-scale consistency of display

Also Published As

Publication number Publication date Type
JP2618908B2 (en) 1997-06-11 grant

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