JPS5735493A - Compensator for white balance - Google Patents

Compensator for white balance

Info

Publication number
JPS5735493A
JPS5735493A JP11067580A JP11067580A JPS5735493A JP S5735493 A JPS5735493 A JP S5735493A JP 11067580 A JP11067580 A JP 11067580A JP 11067580 A JP11067580 A JP 11067580A JP S5735493 A JPS5735493 A JP S5735493A
Authority
JP
Japan
Prior art keywords
signal
color difference
luminance signal
level
added
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
JP11067580A
Other languages
Japanese (ja)
Inventor
Takashi Nakamura
Yoshio Chiba
Yoshimi Yasukochi
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 JP11067580A priority Critical patent/JPS5735493A/en
Publication of JPS5735493A publication Critical patent/JPS5735493A/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)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To achieve excellent chroma reproducibility, by additionally providing an automatic gain control amplifier which controls the level of color difference signal corresponding to the level of added luminance signal, with a circuit adding the luminance signal for white balance compensation to the color difference signal. CONSTITUTION:A color image pickup signal S from an image pickup tube 10 is demodulated into luminance signal Y and color difference signal (R-Y) through a trap circuit and filters and a luminance signal DELTAY for white balance compensation is added or subtracted to or from the color difference signal (R-Y) via an operation circuit 24R. For such a device, an automatic gain amplifier 28R in which the gain is changed with a variable control voltage DELTAE for white balance adjustment is additionally provided. The output of the amplifier 28R is outputted to a terminal 14 through an SC encoder 13 as a chroma signal. Thus, the level for the color difference signal (R-Y) etc. added to the luminance signal Y according to the level of the added luminance signal Y is controlled, allowing to obtain color video signals with good color reproducibility and balance.
JP11067580A 1980-08-12 1980-08-12 Compensator for white balance Pending JPS5735493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11067580A JPS5735493A (en) 1980-08-12 1980-08-12 Compensator for white balance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11067580A JPS5735493A (en) 1980-08-12 1980-08-12 Compensator for white balance

Publications (1)

Publication Number Publication Date
JPS5735493A true JPS5735493A (en) 1982-02-26

Family

ID=14541600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11067580A Pending JPS5735493A (en) 1980-08-12 1980-08-12 Compensator for white balance

Country Status (1)

Country Link
JP (1) JPS5735493A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945546A (en) * 1982-08-23 1984-03-14 カネヴァリィ・ティムバ−・カンパニ− Method and system for handling a plurality of data record according to key field value

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945546A (en) * 1982-08-23 1984-03-14 カネヴァリィ・ティムバ−・カンパニ− Method and system for handling a plurality of data record according to key field value

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