JPS55150688A - Separating circuit of color video signal - Google Patents

Separating circuit of color video signal

Info

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
Application number
JP5925379A
Other languages
Japanese (ja)
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 JP5925379A priority Critical patent/JPS55150688A/en
Publication of JPS55150688A publication Critical patent/JPS55150688A/en
Pending 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 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.
JP5925379A 1979-05-15 1979-05-15 Separating circuit of color video signal Pending JPS55150688A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (17)

* Cited by examiner, † Cited by third party
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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