KR950007574A - Video signal luminance signal / color signal separation circuit - Google Patents
Video signal luminance signal / color signal separation circuit Download PDFInfo
- Publication number
- KR950007574A KR950007574A KR1019930017218A KR930017218A KR950007574A KR 950007574 A KR950007574 A KR 950007574A KR 1019930017218 A KR1019930017218 A KR 1019930017218A KR 930017218 A KR930017218 A KR 930017218A KR 950007574 A KR950007574 A KR 950007574A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- low pass
- pass filter
- separation circuit
- output
- Prior art date
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- Processing Of Color Television Signals (AREA)
Abstract
본 발명은 Y/C 분리시 발생되는 수직 해상도의 열화를 개선하여 Y/C 분리시의 신호 열화를 개선시킬 수 있는 영상신호의 휘도/색신호 분리회로에 관한 것으로 복합 영상 신호에서 Y저역 신호를 추출하는 제1로우 패스 필터(9), 복합 영상 신호중의 저역 신호 성분을 추출하는 제2로우 패스 필터(13), 제1가산기(3) 출력을 지연시키는 지연부(14), 제2로우 패스 필터(13)와 지연부(14) 출력을 감산하는 제2감산기(15), 제1로우 패스 필터(9)와 제2감산기(15) 출력으로부터 양질의 Y신호를 출력하는 제3가산기(16)를 선행하는 Y/C분리회로의 빗살형 필터(8)에 접속하여 이루어진다.The present invention relates to a luminance / color signal separation circuit of a video signal capable of improving signal degradation in Y / C separation by improving degradation of vertical resolution generated in Y / C separation. A first low pass filter 9, a second low pass filter 13 for extracting low-pass signal components of the composite video signal, a delay unit 14 for delaying the output of the first adder 3, and a second low pass filter A second subtractor 15 subtracting the output of the delay section 14 and a third adder 16 outputting a high quality Y signal from the first low pass filter 9 and the second subtractor 15 output; Is connected to the comb-shaped filter 8 of the preceding Y / C separation circuit.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 종래 휘도신호/색신호 분리 과정을 설명하기 위한 블록도,1 is a block diagram illustrating a conventional luminance signal / color signal separation process;
제2도는 종래 빗살형 필터의 동작을 설명하기 위한 파형도,2 is a waveform diagram for explaining the operation of the conventional comb filter,
제3도는 상관검출기의 동작을 나타내는 파형도,3 is a waveform diagram showing the operation of the correlation detector,
제4도는 종래 스위치와 밴드 패스 필터의 동작을 나타내는 파형도로 (A)는 시간축에서의 동작 파형도이며, (B)는 비상관시의 주파수축에서의 밴드 패스 필터 특성도.4 is a waveform diagram showing the operation of a conventional switch and a band pass filter (A) is an operation waveform diagram on the time axis, and (B) is a band pass filter characteristic diagram on the frequency axis at uncorrelation.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930017218A KR950007574A (en) | 1993-08-31 | 1993-08-31 | Video signal luminance signal / color signal separation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930017218A KR950007574A (en) | 1993-08-31 | 1993-08-31 | Video signal luminance signal / color signal separation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950007574A true KR950007574A (en) | 1995-03-21 |
Family
ID=66817859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930017218A KR950007574A (en) | 1993-08-31 | 1993-08-31 | Video signal luminance signal / color signal separation circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950007574A (en) |
-
1993
- 1993-08-31 KR KR1019930017218A patent/KR950007574A/en not_active Application Discontinuation
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E601 | Decision to refuse application |