KR920014284A - Color Signal Separation Method and Circuit Using Line Correlation in Composite Video Signal - Google Patents

Color Signal Separation Method and Circuit Using Line Correlation in Composite Video Signal Download PDF

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KR920014284A
KR920014284A KR1019900020659A KR900020659A KR920014284A KR 920014284 A KR920014284 A KR 920014284A KR 1019900020659 A KR1019900020659 A KR 1019900020659A KR 900020659 A KR900020659 A KR 900020659A KR 920014284 A KR920014284 A KR 920014284A
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signal
correlation
color
comb
color signal
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KR1019900020659A
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KR930008185B1 (en
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서동일
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강진구
삼성전자 주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/77Circuits 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
    • H04N9/78Circuits 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 for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

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

Abstract

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Description

복합영상신호에서 라인간 상관도를 이용하는 색신호 분리 방법 및 회로Color Signal Separation Method and Circuit Using Line Correlation in Composite Video Signal

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

제4도는 이 발명에 따른 색신호 분리회로의 실시회로도, 제5도는 이 발명에 따른 계수 발생부의 실시회로도이다.4 is an implementation circuit diagram of the color signal separation circuit according to the present invention, and FIG. 5 is an implementation circuit diagram of the coefficient generator according to the present invention.

Claims (10)

1H지연된 라인신호와 다음에 인가되는 라인신호의 차를 구한후 1/2배시켜 1H콤필터링을 행하여 복합영상신호에서 색신호를 분리시키는 방법에 있에서, 적어도 3개 이상 연속되는 라인신호의 차에 따라 각각 2개이상의 1H콤필터링을 수행하고 2개 이상의 1H콤필터된 신호를 연산시켜 2H콤필터링을 수행하며; 상기 2개 이상의 1H콤필터된 신호에서 휘도신호의 라인간상관도에 따라 발생되는 검출신호와, 상기 2개이상의 1H콤필터된 신호에서 색신호의 라인간 상관도에 따라 발생되는 검출신호들을 기준신호들과 비교되게 하여 수신호가 발생되게 하고; 상기 계수신호의 값에 따라 2개이상의 1H콤필터링된 신호와 2H콤필터링된 신호를 선택하여 콤필터됨 색신호가 출력되게한 복합영상신호에서 라인간 상관도를 이용한 색신호 분리방법.In the method of separating the color signal from the composite video signal by performing 1H comb filtering by halving the difference between the 1H delayed line signal and the next applied line signal, the difference between the at least three consecutive line signals is obtained. Accordingly, at least two 1H comb filtering are performed, and at least two 1H comb filtered signals are calculated to perform 2H comb filtering; The detection signal generated according to the correlation between lines of the luminance signal in the two or more 1H comb filtered signals and the detection signals generated according to the correlation between the lines of the color signal in the two or more 1H comb filtered signals. To be compared so that a hand signal is generated; And selecting at least two 1H comb-filtered signals and 2H com-filtered signals according to the value of the count signal, and using a correlation between lines in a composite video signal to output a comb-filtered color signal. 제1항에 있어서, 복합영상신호에서 색신호의 라인간 상관도를 검출할때 라인간 칼라 서브캐리어의 위상특성을 이용하여 검출하도록 복합영상신호에서 라인간 상관도를 이용한 색신호 분리방법.The color signal separation method according to claim 1, wherein the inter-line correlation in the composite image signal is detected using the phase characteristic of the color subcarrier between lines when detecting the inter-line correlation of the color signal in the composite image signal. 제1항에 있어서, 복합영상신호에서 라인간 상관도를 검출할때 휘도신호의 라인간 상관도의 색신호의 라인간 상관도에따라 발생되는 계수신호에 의하여 1H콤필터된 색신호와 2H콤필터된 색신호에 대하여 가중치를 두어 비례적으로 색시니호가 출력되게 한 복합영상신호에서 라인간 상관도를 이용한 색신호 분리방법.The 1H com-filtered color signal and 2H com-filtered by the coefficient signal generated according to the line-to-line correlation of the color signal of the line-to-line correlation of the luminance signal when detecting the inter-line correlation in the composite video signal. A color signal separation method using the correlation between lines in a composite video signal in which the color signal is proportionally outputted by weighting the color signal. 라인신호를 1H지연시키는 1H지연부와, 1H지연신호와 다음에 인가되는 라인신호의 차를 구하기 위한 가산기와, 라인신호간의 차를 1/2배시키는 증폭기와, 로 구성되여 1H콤필터링되게하여 복합영상신호중에서 색신호가 분리되게 한 콤필터에 있어서, 1H콤필터링된 출력을 2개이상 발생시키는 제1필터수단과, 상기 제1필터수단에서 출력되는 2개이상의 1H콤필터링된 출력으로 2H콤필터링된 출력을 발생시키는 제2필터수단과,를 포함하는 색분리 필터와; 상기 제1필터수단에서 출력되는 2개 이상의 1H콤필터링된 출력에서 상관관계를 검출하기 위한 휘도신호 상관관계 검출부와, 상기 제1필터수단에서 출력되는 2개이상의 2H콤필터링된 출력에서 상관관계를 검출하기 위한 색신호 상관관계 검출부와, 상기 휘도신호 상관관계 검출부 및 색신호 상관관계 검출부의 검출신호들과 하나이상의 기준신호를 비교하여 연산된 출력을 발생시키는 계수발생부와, 를 포함하는 상관관계 검출회로와; 상기 색분리필터와 계수발생부 사이에 연결되어 1H콤필터된 색신호 및 2H콤필터된 색신호를 선택적으로 출력시키기 위한 셀렉터와; 로 구성된 복합영상신호에서 라인간 상관도를 이용한 색신호 분리회로.A 1H delay unit for delaying the line signal by 1H, an adder for obtaining the difference between the 1H delay signal and the next line signal, an amplifier for halving the difference between the line signals, and a 1H comb filter. A comb filter in which a color signal is separated from a composite video signal, the comb filter comprising: a first filter means for generating at least two 1H comb filtered outputs; and a 2H comb with at least two 1H comb filtered outputs output from the first filter means. A color separation filter comprising: second filter means for generating a filtered output; A correlation between the luminance signal correlation detector for detecting correlation in two or more 1H com-filtered outputs output from the first filter means, and the correlation in the two or more 2H com-filtered outputs output from the first filter means. A correlation between a color signal correlation detector for detecting, a coefficient generator for generating an output calculated by comparing the detection signals of the luminance signal correlation detector and the color signal correlation detector with at least one reference signal; Wow; A selector connected between the color separation filter and the coefficient generator to selectively output a 1H comb filtered color signal and a 2H comb filtered color signal; Color signal separation circuit using the correlation between lines in the composite video signal consisting of. 제4항에 있어서, 색분리 필터의 제1필터수단은, 순차적으로 수평주기 만큼 지연되는 다수개의 1H지연부들과, 상기 1H지연부들 사이에 연결되어 각각의 라인신호의 차를 구하는 가산기들과, 상기 가산기의 출력을 1/2배 시키는 증폭기들과, 로구성된 복합영상신호에서 라인간 상관도를 이용한 색신호 분리회로.5. The apparatus of claim 4, wherein the first filter means of the color separation filter comprises: a plurality of 1H delay units sequentially delayed by a horizontal period, adders connected between the 1H delay units to obtain a difference in each line signal; And a color signal separation circuit using the correlation between lines in the composite video signal including amplifiers for doubling the output of the adder. 제4항에 있어서, 색분리필터의 제2필터수단은, 제1필터수단내에 1/2배 증폭시키는 증폭기들의 출력의 차를 구하는 가산기와, 상기 가산기의 출력을 1/2배 증폭시키는 증폭기와, 로 구성된 복합영상신호에서 라인간 상관도를 이용한 색신호분리회로.5. The apparatus of claim 4, wherein the second filter means of the color separation filter comprises: an adder for obtaining the difference of the outputs of the amplifiers amplified by one and a half times in the first filter means, an amplifier for amplifying the output of the adder and a half times; Color signal separation circuit using the correlation between lines in a composite video signal consisting of, and. 제4항에 있어서, 휘도신호 상관관계 검출부는, 제1필터수단내의 1/2배 증폭시키는 증폭기의 출력이 인가되는 하나이상의 저역통과 필터와, 상기 저역통과필터의 후단에 연결되어 연산된 값을 출력시키는 하나 이상의 절대값 변환부와, 로 구성된 복합영상 신호에서 라인간 상관도를 이용한 색신호 분리회로.5. The apparatus of claim 4, wherein the luminance signal correlation detector comprises at least one low pass filter to which an output of an amplifier for amplifying 1/2 times in the first filter means is applied, and a value calculated by being connected to a rear end of the low pass filter. Color signal separation circuit using the correlation between lines in the composite image signal consisting of one or more absolute value converting unit for outputting. 제4항에 있어서, 색신호 상관관계 검출부는, 제1필터수단내의 1H지연부의 출력의 차를 구하는 하나 이상의 가산기와, 상기 가산기의 출력을 1/2배 증폭시키는 하나이상의 증폭기와, 상기 증폭기의 출력을 입력으로 하는 하나이상의 밴드패스 필터와, 상기 밴드패스 필터의 후단에 연결되어 일정한 레벨값으로 변환시키기 위한 하나이상의 절대값 변환부와,로 구성된 복합영상 신호에서 라인간 상관도를 이용한 색신호 분리회로.5. The color signal correlation detecting unit according to claim 4, wherein the color signal correlation detecting unit comprises: at least one adder for obtaining a difference between outputs of the 1H delay unit in the first filter means, at least one amplifier for amplifying the output of the adder 1/2 times, and the output of the amplifier. At least one bandpass filter having an input signal, at least one absolute value converting unit connected to a rear end of the bandpass filter to convert to a constant level value, and a color signal separation circuit using the correlation between lines in the composite image signal . 제4항에 있어서, 계수발생부는 제1기준신호 및 휘도신호 상관관계 검출부의 상관관계를 비교하는 제1기준신호 비교기들과; 제2기준신호 및 색신호 상관관계 검출부의 상관관계를 비교하는 제2기준신호 비교기들과, 상기 제1기준신호 비교기들과 제2기준신호 비교기들의 출력상태를 감지하는 하나이상의 게이트와, 상기 제1 및 제2기준신호 비교기들의 출력과 상기 하나이상의 게이트의 출력을 논리적으로 배교하여 2진 데이타를 출력시키는 논리처리부와, 로 구성된 복합영상 신호에서 라인간 상관도를 이용한 색신호 분리회로.The apparatus of claim 4, wherein the coefficient generator comprises: first reference signal comparators for comparing correlations between the first reference signal and the luminance signal correlation detector; Second reference signal comparators for comparing correlations of a second reference signal and a color signal correlation detector, at least one gate for sensing an output state of the first reference signal comparators and the second reference signal comparators, and the first reference signal comparator; And a logic processor configured to logically cross the outputs of the second reference signal comparators and the outputs of the one or more gates to output binary data, and a color signal separation circuit using the correlation between lines in the composite image signal. 제9항에 있어서, 제1기준신호 및 제2기중신호는, 마이콤 또는 사용자에 의하여 미리 설정된 신호로서 제1기준신호는 휘도신호의 기준이며, 제2기중신호는 색신호의 기준신호인 것을 특징으로 하는 복합영상신호에서 라인간 상관도를 이용하는 색신호 분리회로.The method of claim 9, wherein the first reference signal and the second weight signal are signals preset by a microcomputer or a user, and the first reference signal is a reference of a luminance signal, and the second weight signal is a reference signal of a color signal. Color signal separation circuit using the correlation between lines in the composite video signal. ※ 참고사항 : 최초출원내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900020659A 1990-12-14 1990-12-14 Chrominance signal separating method and circuit KR930008185B1 (en)

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Application Number Priority Date Filing Date Title
KR1019900020659A KR930008185B1 (en) 1990-12-14 1990-12-14 Chrominance signal separating method and circuit

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KR1019900020659A KR930008185B1 (en) 1990-12-14 1990-12-14 Chrominance signal separating method and circuit

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KR920014284A true KR920014284A (en) 1992-07-30
KR930008185B1 KR930008185B1 (en) 1993-08-26

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