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KR910004005A - Horizontal contour correction method and circuit - Google Patents

Horizontal contour correction method and circuit Download PDF

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Publication number
KR910004005A
KR910004005A KR1019890010792A KR890010792A KR910004005A KR 910004005 A KR910004005 A KR 910004005A KR 1019890010792 A KR1019890010792 A KR 1019890010792A KR 890010792 A KR890010792 A KR 890010792A KR 910004005 A KR910004005 A KR 910004005A
Authority
KR
South Korea
Prior art keywords
luminance signal
gain
low
filtering
synthesizing
Prior art date
Application number
KR1019890010792A
Other languages
Korean (ko)
Inventor
신윤복
이정상
Original Assignee
강진구
삼성전자 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 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019890010792A priority Critical patent/KR910004005A/en
Priority to JP2198962A priority patent/JPH0366266A/en
Priority to GB9016412A priority patent/GB2237161B/en
Publication of KR910004005A publication Critical patent/KR910004005A/en
Priority to US07/764,968 priority patent/US5150214A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

내용 없음.No content.

Description

수평 윤곽 보정방법 및 회로Horizontal contour correction method and circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 회로도,1 is a conventional circuit diagram,

제2도는 본 발명에 따른 회로도.2 is a circuit diagram according to the present invention.

Claims (3)

디지탈 영상신호 처리시스템의 수평 윤곽 보정회로에 있어서, 입력휘도신호(Y)의 저역성분을 필터링하는 저역필터링부(BPF1)와, 입력휘도신호(Y)의 중역성분을 필터링하는 중역필터링부(BPF2)와, 입력휘도신호(Y)의 고역성분을 필터링하는 고역필터링부(BPF3)와, 상기 저역 필터링된 휘도신호의 게인을 조절하는 저역계인 조절부(GC1)와, 상기 중역 필터링된 휘도신호의 게인을 조절하는 중역게인 조절부(GC2)와, 상기 고역 필터링된 휘도신호의 게인을 조절하는 고역게인 조절부(GC3)와, 입력휘도신호(Y)와 상기 저역게인 조절부 출력을 가산하는 제1가산부(MIX1)와, 중역필터링된 휘도신호와 고역필터링된 휘도신호를 가산하는 제2가산부(MIX2)와, 상기 제1 및 제2가산부 출력을 가산하는 제3가산부(MIX3)로 구성됨을 특징으로 하는 회로.A horizontal contour correction circuit of a digital image signal processing system, comprising: a low pass filtering portion BPF1 for filtering low frequency components of an input luminance signal Y, and a low pass filtering portion BPF2 for filtering midrange components of an input luminance signal Y; ), A high pass filtering unit (BPF3) for filtering the high frequency component of the input luminance signal (Y), a low pass control unit (GC1) for adjusting the gain of the low-pass filtered luminance signal, and the mid-pass filtered luminance signal A middle gain adjusting unit (GC2) for adjusting gain, a high gain adjusting unit (GC3) for adjusting gain of the high-pass filtered luminance signal, an input luminance signal (Y), and an output of the low gain adjusting unit A first adder MIX1, a second adder MIX2 for adding the mid-range filtered luminance signal and a high-pass filtered luminance signal, and a third adder MIX3 for adding the first and second adder outputs; Circuit, characterized in that consisting of. 디지탈 영상신호 처리시스템의 수평 윤곽 보정방법에 있어서, 입력된 휘도신호(Y)를 저,중, 고역에서 필터링하여 출력하는 제1과정과, 상기 제1과정의 저, 중, 고역에서 필터링된 출력을 제l-제3게인 컨트롤신호로 각 신호 대역별로 인가되는 강조 혹은 감쇄 계수값과 곱하여 게인을 조절하는 제2과정과, 상기 제2과정의 이득이 조절된 휘도출력을 원래 입력된 휘도신호(Y)와 합성 하여 수평 윤곽 보정된 휘도신호(Yout)를 출력하는 제3과정으로 이루어짐을 특징으로 하는 방법.A horizontal contour correction method of a digital image signal processing system, comprising: a first process of filtering an input luminance signal (Y) at low, middle, and high frequencies and outputting the filtered low, medium, and high frequencies of the first process; The second process of adjusting the gain by multiplying with the first or third gain control signal by the emphasis or attenuation coefficient applied to each signal band, and the luminance output of which the gain of the second process is adjusted is originally input to the luminance signal ( And a third process of synthesizing with Y) and outputting a horizontal contour corrected luminance signal Yout. 제2항에 있어서, 제3과정이 원 입력 휘도신호(Y)와 저역필터링된 휘도신호를 합성하는 제1합성단계와, 중역필터링된 휘도신호를 고역필터링된 휘도신호와 합성하는 제2합성단계와, 상기 제1 및 제2합성결과 발생된 각 휘도신호를 합성하여 수평윤곽 보정된 휘도신호(Yout2)를 발생하는 제3합성단계로 이루어짐을 특징으로 하는 방법.The method of claim 2, wherein the third process comprises: a first synthesis step of synthesizing the original input luminance signal Y and the low pass filtered luminance signal, and a second synthesis step of synthesizing the mid-range filtered luminance signal with the high pass filtered luminance signal; And a third synthesizing step of synthesizing each luminance signal generated as a result of the first and second synthesis to generate a horizontal outline corrected luminance signal Yout2. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890010792A 1989-07-29 1989-07-29 Horizontal contour correction method and circuit KR910004005A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019890010792A KR910004005A (en) 1989-07-29 1989-07-29 Horizontal contour correction method and circuit
JP2198962A JPH0366266A (en) 1989-07-29 1990-07-26 Method and circuit for correcting horizontal profile
GB9016412A GB2237161B (en) 1989-07-29 1990-07-26 A method and circuit for correction of horizontal edges
US07/764,968 US5150214A (en) 1989-07-29 1991-09-25 Method and circuit for correction of horizontal edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890010792A KR910004005A (en) 1989-07-29 1989-07-29 Horizontal contour correction method and circuit

Publications (1)

Publication Number Publication Date
KR910004005A true KR910004005A (en) 1991-02-28

Family

ID=19288535

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890010792A KR910004005A (en) 1989-07-29 1989-07-29 Horizontal contour correction method and circuit

Country Status (3)

Country Link
JP (1) JPH0366266A (en)
KR (1) KR910004005A (en)
GB (1) GB2237161B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2882712B2 (en) * 1992-03-09 1999-04-12 富士写真フイルム株式会社 Contour correction circuit in image processing device
JPH0641491A (en) * 1992-07-23 1994-02-15 Kansai Paint Co Ltd Water-base coating composition and method for applying the same
US5374995A (en) * 1993-03-22 1994-12-20 Eastman Kodak Company Method and apparatus for enhancing sharpness of a sequence of images subject to continuous zoom
GB2311432B (en) * 1996-03-20 2000-05-03 Sony Uk Ltd Method and apparatus for processing an input image
JPWO2002084997A1 (en) * 2001-04-11 2004-08-05 ソニー株式会社 Edge enhancement device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63103571A (en) * 1986-10-20 1988-05-09 Sanyo Electric Co Ltd Picture quality adjusting circuit
JPS63114482A (en) * 1986-10-31 1988-05-19 Sony Corp Video picture quality adjusting device

Also Published As

Publication number Publication date
GB2237161B (en) 1993-12-15
JPH0366266A (en) 1991-03-20
GB2237161A (en) 1991-04-24
GB9016412D0 (en) 1990-09-12

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PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19890729

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Patent event code: PA02012R01D

Patent event date: 19890729

Comment text: Request for Examination of Application

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Patent event date: 19920217

Patent event code: PE09021S01D

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