KR960036809A - White balance automatic adjustment device and control method - Google Patents

White balance automatic adjustment device and control method Download PDF

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Publication number
KR960036809A
KR960036809A KR1019950007137A KR19950007137A KR960036809A KR 960036809 A KR960036809 A KR 960036809A KR 1019950007137 A KR1019950007137 A KR 1019950007137A KR 19950007137 A KR19950007137 A KR 19950007137A KR 960036809 A KR960036809 A KR 960036809A
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KR
South Korea
Prior art keywords
signal
white balance
white
camera
receiving
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Application number
KR1019950007137A
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Korean (ko)
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KR0148979B1 (en
Inventor
이수원
손봉락
Original Assignee
배순훈
대우전자 주식회사
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Priority to KR1019950007137A priority Critical patent/KR0148979B1/en
Publication of KR960036809A publication Critical patent/KR960036809A/en
Application granted granted Critical
Publication of KR0148979B1 publication Critical patent/KR0148979B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control

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

Abstract

화이트 발란스를 자동 조정하는 장치 및 그 제어방법에 관한 것으로, 카메라부의 EVR 소자를 제어하여 청색 색도를 조정하고, 영상신호의 색도 신호중 화이트 영역의 레벨이 최소가 되도록 청색색도를 조정한 후, 상기 카메라부의 EVR소자를 제어하여 적색 색도를 조정하여 영상신호의 색도 신호중 화이트 영역의 레벨이 최소가 되도록 적색색도를 조정한 후 상기 카메라부의 전원을 3차간 오프하고, 다시 온 상태로하여 색도 신호중 화이트 영역의 레벨이 되도록 조정한다.The present invention relates to an apparatus for automatically adjusting white balance and a method of controlling the same, the method comprising: controlling an EVR element of a camera unit to adjust a blue chromaticity, and adjusting a blue chromaticity such that the level of a white region of a chroma signal of an image signal is minimum; Adjust the red chromaticity by controlling the negative EVR element to adjust the red chromaticity so that the level of the white region of the chromaticity signal of the video signal is minimum, and then turn off the power of the camera for 3 times, and turn it on again to turn on the white region of the chromaticity signal. Adjust to level.

Description

화이트 발란스 자동 조정장치 및 그 제어방법White balance automatic adjustment device and control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 화이트 발란스 종정방법을 보이는 설명도, 제2도는 본 발명에 의한 화이트 발란스 자동 조정장치의 구성을 보이는 블럭도, 제3도는 본 발명에 의한 화이트 발란스 자동 조정장치를 제어하는 방법을 보이는 플로우챠트이다.1 is an explanatory diagram showing a conventional white balance determination method, FIG. 2 is a block diagram showing the configuration of the white balance automatic adjustment device according to the present invention, and FIG. 3 is a method for controlling the white balance automatic adjustment device according to the present invention. This is a flow chart.

Claims (3)

화이트발란스 조정장치에 있어서, 카메라로부터 영상신호를 받아 처리하는 카메라부의 다수의 테스트 포인트에서 신호를 검출하는 스위칭부와, 상기 스위칭부로부터 영상신호를 받아 그 화면에 표시하는오실로스코우프와, 상기 오실로스코우프로부터 측정신호를 입력받아 백색 레벨 신호가 소정값 이하가 되도록 제어하는 제어부와, 상기 제어부로부터 제어신호를 받아 상기 카메라부에 장치된 EVR소자를 제어하는 신호를 출력하는 EVR제어부를 구비하는 것을 특징으로 하는 화이트 발란스 자동 조정장치.An apparatus for adjusting white balance, comprising: a switching unit for detecting a signal at a plurality of test points of a camera unit for receiving and processing an image signal from a camera, an oscilloscope for receiving an image signal from the switching unit and displaying the image signal on the screen; And a control unit for receiving the measurement signal from the Roskov and controlling the white level signal to be equal to or less than a predetermined value, and an EVR control unit for receiving the control signal from the control unit and outputting a signal for controlling the EVR element installed in the camera unit. Features a white balance auto adjuster. 제1항에 있어서, 상기 스위칭부는 상기 테스트 포인트에서 적색색도 신호 및 청색색도 신호를 검출할 수 있는 테스트 포인트에서 신호를 검출하는 것을 특징으로 하는 화이트 발란스 자동 조정장치.The apparatus of claim 1, wherein the switching unit detects a signal at a test point capable of detecting a red color signal and a blue color signal at the test point. 화이트 발란스 조정장치의 제어방법에 있어서 초기화하는 단계와, 청색 조정 어드레스에 초기값을 입력하고, 청색 색도 신호를 스위칭부를 통해 검출하여 오실로스코우프에 인가한 후, 상기 오실로스코우프로부터 화이트 색도신호에 대한 데이타를 읽어들여 최소치가 되도록 조정하는 단계와, 적색 조정 어드레스에 대해서도 상기 과정을 반복하는 단계와, 상기 카메라부에 인가된 전원을 3초간 오프하고 다시 전원을 인가하여 화이트 색도 신호가 최소치가 되도록 상기 과정을 반복하는 단계를 구비하는 것을 특징으로 하는 화이트 발란스 조정장치의 제어방법.In the control method of the white balance adjusting device, an initial value is input to a blue adjusting address, a blue chroma signal is detected through a switching unit, applied to an oscilloscope, and then the white chroma signal is received from the oscilloscope. Adjusting the data to be the minimum value by reading the data, and repeating the above process for the red adjustment address, turning off the power applied to the camera for 3 seconds, and applying the power again so that the white chromaticity signal becomes the minimum value. And repeating the above steps. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950007137A 1995-03-30 1995-03-30 White balance automation apparatus and control method KR0148979B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950007137A KR0148979B1 (en) 1995-03-30 1995-03-30 White balance automation apparatus and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950007137A KR0148979B1 (en) 1995-03-30 1995-03-30 White balance automation apparatus and control method

Publications (2)

Publication Number Publication Date
KR960036809A true KR960036809A (en) 1996-10-28
KR0148979B1 KR0148979B1 (en) 1998-10-15

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Application Number Title Priority Date Filing Date
KR1019950007137A KR0148979B1 (en) 1995-03-30 1995-03-30 White balance automation apparatus and control method

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KR0148979B1 (en) 1998-10-15

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