JPS55150687A - Separating circuit of color video signal - Google Patents

Separating circuit of color video signal

Info

Publication number
JPS55150687A
JPS55150687A JP5925279A JP5925279A JPS55150687A JP S55150687 A JPS55150687 A JP S55150687A JP 5925279 A JP5925279 A JP 5925279A JP 5925279 A JP5925279 A JP 5925279A JP S55150687 A JPS55150687 A JP S55150687A
Authority
JP
Japan
Prior art keywords
signal
circuit
luminance
vertical correlation
color video
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.)
Granted
Application number
JP5925279A
Other languages
Japanese (ja)
Other versions
JPS647550B2 (en
Inventor
Takafumi Okada
Yutaka Tanaka
Atsushi Matsuzaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP5925279A priority Critical patent/JPS55150687A/en
Publication of JPS55150687A publication Critical patent/JPS55150687A/en
Publication of JPS647550B2 publication Critical patent/JPS647550B2/ja
Granted legal-status Critical Current

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 luminance 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 circuit 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 circuit 23. The magnitude of vertical correlation of luminance signals is detected by circuit 30, and switch circuits 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 Se are taken out for small vertical correlation, so that good separation which has no bad influence upon the reproducing screen is possible.
JP5925279A 1979-05-15 1979-05-15 Separating circuit of color video signal Granted JPS55150687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5925279A JPS55150687A (en) 1979-05-15 1979-05-15 Separating circuit of color video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5925279A JPS55150687A (en) 1979-05-15 1979-05-15 Separating circuit of color video signal

Publications (2)

Publication Number Publication Date
JPS55150687A true JPS55150687A (en) 1980-11-22
JPS647550B2 JPS647550B2 (en) 1989-02-09

Family

ID=13107994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5925279A Granted JPS55150687A (en) 1979-05-15 1979-05-15 Separating circuit of color video signal

Country Status (1)

Country Link
JP (1) JPS55150687A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5640382A (en) * 1979-08-20 1981-04-16 Faroudja Y C Right angle modulation color television signal separator
FR2502879A1 (en) * 1981-03-30 1982-10-01 Sony Corp CIRCUIT FOR PROCESSING A COLOR SUBCARRIER SIGNAL
WO1983001554A1 (en) * 1981-10-23 1983-04-28 Kondo, Tetsuya Carrier color signal separating circuit
JPS58111596A (en) * 1981-12-25 1983-07-02 Sony Corp Signal processing circuit
JPS59151592A (en) * 1983-02-17 1984-08-30 Pioneer Electronic Corp Separating circuit of luminance signal and chrominance signal
JPS6141290A (en) * 1984-07-31 1986-02-27 Nec Home Electronics Ltd Y/c separator of color television signal
JPS61109281U (en) * 1984-12-20 1986-07-10
JPS61212184A (en) * 1985-03-15 1986-09-20 Nec Home Electronics Ltd Y/c separating device for color television signal
US4616254A (en) * 1985-04-18 1986-10-07 Rca Corporation Hanging dot reduction system
JPS61269487A (en) * 1985-01-14 1986-11-28 Nec Corp Y/c separating circuit
US4636842A (en) * 1984-11-29 1987-01-13 Rca Corporation Comb filter "hanging dot" eliminator
JPS6242680A (en) * 1985-06-11 1987-02-24 トムソン・グラン・ピユブリツク Method and apparatus for separating brightness signal and color difference signal of pal or secam type compound video signal
JPS6292693A (en) * 1985-10-18 1987-04-28 Nec Home Electronics Ltd Y/c separating device for color television signal
JPS62152290A (en) * 1985-12-26 1987-07-07 Matsushita Electric Ind Co Ltd Luminance signal and chrominance signal separating circuit
JPS62168495A (en) * 1985-09-27 1987-07-24 アムペックス　コーポレーシヨン Separating circuit of chrominance and luminance frequency component of composite video signal
EP0311461A2 (en) * 1987-10-09 1989-04-12 Sony Corporation Video signal correlation detecting apparatus and method
US4847682A (en) * 1987-12-18 1989-07-11 North American Philips Corporation Adaptive comb filter for artifact-free decoding
US4979023A (en) * 1987-12-18 1990-12-18 Mikhail Tsinberg Adaptive comb filter for artifact-free decoding
US4985764A (en) * 1988-09-29 1991-01-15 Kabushiki Kaisha Toshiba Apparatus for detecting a pixel correlation and generating an interpolation signal for a digital television signal
US5032899A (en) * 1988-07-22 1991-07-16 Kabushiki Kaisha Toshiba Interpolation signal generating circuit for progressive scanning conversion system television receiver
US5041904A (en) * 1988-03-31 1991-08-20 Hitachi, Ltd. Video signal processing circuit
US5134467A (en) * 1989-12-12 1992-07-28 Goldstar Co., Ltd. Luminance/chromaticity signal separation circuit for composite video signal
US5412434A (en) * 1991-03-14 1995-05-02 Mitsubishi Denki Kabushiki Kaisha Luminance and chrominance signals separating filter adaptive to movement of image

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5640382A (en) * 1979-08-20 1981-04-16 Faroudja Y C Right angle modulation color television signal separator
FR2502879A1 (en) * 1981-03-30 1982-10-01 Sony Corp CIRCUIT FOR PROCESSING A COLOR SUBCARRIER SIGNAL
WO1983001554A1 (en) * 1981-10-23 1983-04-28 Kondo, Tetsuya Carrier color signal separating circuit
JPS58111596A (en) * 1981-12-25 1983-07-02 Sony Corp Signal processing circuit
JPH0458232B2 (en) * 1981-12-25 1992-09-16 Sony Corp
JPS59151592A (en) * 1983-02-17 1984-08-30 Pioneer Electronic Corp Separating circuit of luminance signal and chrominance signal
JPS6141290A (en) * 1984-07-31 1986-02-27 Nec Home Electronics Ltd Y/c separator of color television signal
JPH0314393B2 (en) * 1984-07-31 1991-02-26 Nippon Denki Hoomu Erekutoronikusu Kk
US4636842A (en) * 1984-11-29 1987-01-13 Rca Corporation Comb filter "hanging dot" eliminator
JPS61109281U (en) * 1984-12-20 1986-07-10
JPS61269487A (en) * 1985-01-14 1986-11-28 Nec Corp Y/c separating circuit
JPS61212184A (en) * 1985-03-15 1986-09-20 Nec Home Electronics Ltd Y/c separating device for color television signal
JPH0380395B2 (en) * 1985-03-15 1991-12-24 Nippon Denki Hoomu Erekutoronikusu Kk
US4616254A (en) * 1985-04-18 1986-10-07 Rca Corporation Hanging dot reduction system
JPS6242680A (en) * 1985-06-11 1987-02-24 トムソン・グラン・ピユブリツク Method and apparatus for separating brightness signal and color difference signal of pal or secam type compound video signal
JPS62168495A (en) * 1985-09-27 1987-07-24 アムペックス　コーポレーシヨン Separating circuit of chrominance and luminance frequency component of composite video signal
JPS6292693A (en) * 1985-10-18 1987-04-28 Nec Home Electronics Ltd Y/c separating device for color television signal
JPS62152290A (en) * 1985-12-26 1987-07-07 Matsushita Electric Ind Co Ltd Luminance signal and chrominance signal separating circuit
EP0311461A2 (en) * 1987-10-09 1989-04-12 Sony Corporation Video signal correlation detecting apparatus and method
US4979023A (en) * 1987-12-18 1990-12-18 Mikhail Tsinberg Adaptive comb filter for artifact-free decoding
US4847682A (en) * 1987-12-18 1989-07-11 North American Philips Corporation Adaptive comb filter for artifact-free decoding
US5041904A (en) * 1988-03-31 1991-08-20 Hitachi, Ltd. Video signal processing circuit
US5032899A (en) * 1988-07-22 1991-07-16 Kabushiki Kaisha Toshiba Interpolation signal generating circuit for progressive scanning conversion system television receiver
US4985764A (en) * 1988-09-29 1991-01-15 Kabushiki Kaisha Toshiba Apparatus for detecting a pixel correlation and generating an interpolation signal for a digital television signal
US5134467A (en) * 1989-12-12 1992-07-28 Goldstar Co., Ltd. Luminance/chromaticity signal separation circuit for composite video signal
US5412434A (en) * 1991-03-14 1995-05-02 Mitsubishi Denki Kabushiki Kaisha Luminance and chrominance signals separating filter adaptive to movement of image

Also Published As

Publication number Publication date
JPS647550B2 (en) 1989-02-09

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