JPS55150688A - Separating circuit of color video signal - Google Patents
Separating circuit of color video signalInfo
- Publication number
- JPS55150688A JPS55150688A JP5925379A JP5925379A JPS55150688A JP S55150688 A JPS55150688 A JP S55150688A JP 5925379 A JP5925379 A JP 5925379A JP 5925379 A JP5925379 A JP 5925379A JP S55150688 A JPS55150688 A JP S55150688A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- vertical correlation
- color video
- video signal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- H04N9/78—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 for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE:To make good separation possible, by separating the luminance signal and the chrominance signal from the color video signal by two methods and by selecting them on a basis of vertical correlation of the chrominance signal. CONSTITUTION:Color video signal Sa is supplied to the Y-type comb line filter consisting of adding circuit 11 and delay circuit 2 and to trap circuit 12, and luminance signals Sb and Sc are separated and are applied to switch 13. Signal Sa is supplied to the C-type comb line filter consisting of subtracting circuit 21 and delay circuit 2 and to BPF22, and chrominance signals Sd and Se are separated and are applied to switch 23. The magnitude of vertical correlation of chrominance signals is detected by circuit 30, and switches 13 and 23 are controlled by the output. Consequently, luminance signal Sb and color signal Sd are taken out for large vertical correlation, and luminance signal Sc and color signal Sd are taken out for small vertical correlation, so that good separation which has no bad influence upon the reproducing screen is possible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5925379A JPS55150688A (en) | 1979-05-15 | 1979-05-15 | Separating circuit of color video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5925379A JPS55150688A (en) | 1979-05-15 | 1979-05-15 | Separating circuit of color video signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55150688A true JPS55150688A (en) | 1980-11-22 |
Family
ID=13108024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5925379A Pending JPS55150688A (en) | 1979-05-15 | 1979-05-15 | Separating circuit of color video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55150688A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58111596A (en) * | 1981-12-25 | 1983-07-02 | Sony Corp | Signal processing circuit |
JPS6146691A (en) * | 1984-08-11 | 1986-03-06 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
JPS61189795A (en) * | 1985-02-18 | 1986-08-23 | Victor Co Of Japan Ltd | Recording information signal converting device |
FR2583246A1 (en) * | 1985-06-11 | 1986-12-12 | Thomson Csf | METHOD FOR SEPARATING THE LUMINANCE AND CHROMINANCE SIGNALS OF A PAL OR SECAM COMPOSITE VIDEO SIGNAL AND DEVICE FOR CARRYING OUT SAID METHOD |
US4814863A (en) * | 1987-06-09 | 1989-03-21 | Matsushita Electric Industrial Co., Ltd. | Detection and concealing artifacts in combed video signals |
FR2625061A1 (en) * | 1987-12-18 | 1989-06-23 | Thomson Grand Public | Separator of luminance and chrominance signals of a PAL or SECAM composite video signal |
JPH02195790A (en) * | 1989-01-24 | 1990-08-02 | Matsushita Electric Ind Co Ltd | Detector for correlation of chrominance signal |
US4979023A (en) * | 1987-12-18 | 1990-12-18 | Mikhail Tsinberg | Adaptive comb filter for artifact-free decoding |
EP0420184A2 (en) * | 1989-09-27 | 1991-04-03 | Kabushiki Kaisha Toshiba | Video signal processing circuit |
US5041904A (en) * | 1988-03-31 | 1991-08-20 | Hitachi, Ltd. | Video signal processing circuit |
JPH04150595A (en) * | 1990-10-12 | 1992-05-25 | Nec Corp | Luminance color separation circuit |
US5173768A (en) * | 1988-10-20 | 1992-12-22 | Deutsche Thomson-Brandt Gmbh | Adaptive pal - or ntsc - comb filter |
-
1979
- 1979-05-15 JP JP5925379A patent/JPS55150688A/en active Pending
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58111596A (en) * | 1981-12-25 | 1983-07-02 | Sony Corp | Signal processing circuit |
JPH0458232B2 (en) * | 1981-12-25 | 1992-09-16 | Sony Corp | |
JPS6146691A (en) * | 1984-08-11 | 1986-03-06 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
JPH0222598B2 (en) * | 1984-08-11 | 1990-05-21 | Matsushita Electric Ind Co Ltd | |
JPS61189795A (en) * | 1985-02-18 | 1986-08-23 | Victor Co Of Japan Ltd | Recording information signal converting device |
JPH0549000B2 (en) * | 1985-02-18 | 1993-07-23 | Victor Company Of Japan | |
FR2583246A1 (en) * | 1985-06-11 | 1986-12-12 | Thomson Csf | METHOD FOR SEPARATING THE LUMINANCE AND CHROMINANCE SIGNALS OF A PAL OR SECAM COMPOSITE VIDEO SIGNAL AND DEVICE FOR CARRYING OUT SAID METHOD |
US4814863A (en) * | 1987-06-09 | 1989-03-21 | Matsushita Electric Industrial Co., Ltd. | Detection and concealing artifacts in combed video signals |
US4979023A (en) * | 1987-12-18 | 1990-12-18 | Mikhail Tsinberg | Adaptive comb filter for artifact-free decoding |
FR2625061A1 (en) * | 1987-12-18 | 1989-06-23 | Thomson Grand Public | Separator of luminance and chrominance signals of a PAL or SECAM composite video signal |
US5041904A (en) * | 1988-03-31 | 1991-08-20 | Hitachi, Ltd. | Video signal processing circuit |
US5173768A (en) * | 1988-10-20 | 1992-12-22 | Deutsche Thomson-Brandt Gmbh | Adaptive pal - or ntsc - comb filter |
JPH02195790A (en) * | 1989-01-24 | 1990-08-02 | Matsushita Electric Ind Co Ltd | Detector for correlation of chrominance signal |
EP0420184A2 (en) * | 1989-09-27 | 1991-04-03 | Kabushiki Kaisha Toshiba | Video signal processing circuit |
JPH03112288A (en) * | 1989-09-27 | 1991-05-13 | Toshiba Corp | Video signal processing circuit |
US5122867A (en) * | 1989-09-27 | 1992-06-16 | Kabushiki Kaisha Toshiba | Video signal processing circuit having a band pass filter following a delay circuit in a comb filter arrangement |
JPH04150595A (en) * | 1990-10-12 | 1992-05-25 | Nec Corp | Luminance color separation circuit |
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