KR970025207A - Image Correction Circuit - Google Patents

Image Correction Circuit Download PDF

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Publication number
KR970025207A
KR970025207A KR1019950038266A KR19950038266A KR970025207A KR 970025207 A KR970025207 A KR 970025207A KR 1019950038266 A KR1019950038266 A KR 1019950038266A KR 19950038266 A KR19950038266 A KR 19950038266A KR 970025207 A KR970025207 A KR 970025207A
Authority
KR
South Korea
Prior art keywords
signal
integrating
differentiating
correction circuit
video signal
Prior art date
Application number
KR1019950038266A
Other languages
Korean (ko)
Other versions
KR0183134B1 (en
Inventor
정일식
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950038266A priority Critical patent/KR0183134B1/en
Publication of KR970025207A publication Critical patent/KR970025207A/en
Application granted granted Critical
Publication of KR0183134B1 publication Critical patent/KR0183134B1/en

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Classifications

    • 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
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/004—CRT

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

본 발명은 텔레비젼 수상기에 있어서 CRT(Cathode-ray Tube)상으로 출력되는 출력화상의 윤곽을 선명하게 하기 위한 영상신호의 윤곽보정회로에 관한 것으로서, 영상신호로부터 검파된 휘도신호를 적분하는 제1 적분수단과, 이 제1 적분수단에 의해 적분된 신호를 미분하는 미분수단을 구비하여, 이 미분수단에 의한 미분신호와 상기 휘도신호를 근거로 영상신호에 대한 윤곽보정을 실행하도록 된 영상신호의 윤곽보정회로에 있어서, 상기 제1 적분수단에 대해 병렬로 결합된 제2 적분수단과, RF/AV 모드에 따라 상기 제2 적분수단을 선택적으로 작동시키는 스위칭수단을 포함하여 구성된 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contour correction circuit of a video signal for sharpening the contour of an output image output on a CRT (Cathode-ray Tube) in a television receiver, the first integration integrating a luminance signal detected from the video signal. Means for differentiating the signal integrated by the first integrating means, and the contour of the video signal adapted to execute contour correction on the video signal based on the differential signal by the differentiating means and the luminance signal. The correction circuit is characterized in that it comprises a second integrating means coupled in parallel to the first integrating means, and a switching means for selectively operating the second integrating means in accordance with the RF / AV mode.

Description

영상신호의 윤곽보정회로Image Correction Circuit

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

제4도는 본 발명의 일실시예에 따른 영상신호의 윤곽보정회로를 나타낸 구성도.4 is a block diagram showing a contour correction circuit of an image signal according to an embodiment of the present invention.

Claims (2)

영상신호로부터 검파된 휘도신호를 적분하는 제1 적분수단과, 이 제1 적분수단에 의해 적분된 신호를 미분하는 미분수단을 구비하여, 이 미분수단에 의한 미분신호와 상기 휘도신호를 근거로 영상신호에 대한 윤곽보정을 실행하도록 된 영상신호의 윤곽보정회로에 있어서, 상기 제1 적분수단에 대해 병렬로 결합된 제2 적분수단과, RF/AV 모드에 따라 상기 제2 적분수단을 선택적으로 작동시키는 스위칭수단을 포함하여 구성된 것을 특징으로 하는 영상신호의 윤곽보정회로.A first integrating means for integrating the luminance signal detected from the video signal, and a differentiating means for differentiating the signal integrated by the first integrating means, and based on the differential signal by the differentiating means and the luminance signal. A contour correction circuit of an image signal adapted to perform contour correction on a signal, the second integration means coupled in parallel to the first integration means, and selectively operating the second integration means in accordance with the RF / AV mode. Contour correction circuit of a video signal comprising a switching means for. 제1항에 있어서, 상기 미분수단은 상기 제1 적분수단의 작동시에 스위칭동작되는 제1 미분수단과, 상기 제2 적분수단의 작동시에 스위칭동작되는 제2 미분수단을 포함하여 구성된 것을 특징으로 하는 영상신호의 윤곽보정회로.The method of claim 1, wherein the differentiating means comprises a first differentiating means for switching operation when the first integrating means is operated, and a second differentiating means for switching operation during the operation of the second integrating means. A contour correction circuit for a video signal.
KR1019950038266A 1995-10-30 1995-10-30 Contour compensation circuit of image signal KR0183134B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950038266A KR0183134B1 (en) 1995-10-30 1995-10-30 Contour compensation circuit of image signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950038266A KR0183134B1 (en) 1995-10-30 1995-10-30 Contour compensation circuit of image signal

Publications (2)

Publication Number Publication Date
KR970025207A true KR970025207A (en) 1997-05-30
KR0183134B1 KR0183134B1 (en) 1999-05-01

Family

ID=19432033

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950038266A KR0183134B1 (en) 1995-10-30 1995-10-30 Contour compensation circuit of image signal

Country Status (1)

Country Link
KR (1) KR0183134B1 (en)

Also Published As

Publication number Publication date
KR0183134B1 (en) 1999-05-01

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