JPS55123280A - Luminance and chromaticity signal separator - Google Patents

Luminance and chromaticity signal separator

Info

Publication number
JPS55123280A
JPS55123280A JP3132579A JP3132579A JPS55123280A JP S55123280 A JPS55123280 A JP S55123280A JP 3132579 A JP3132579 A JP 3132579A JP 3132579 A JP3132579 A JP 3132579A JP S55123280 A JPS55123280 A JP S55123280A
Authority
JP
Japan
Prior art keywords
picture
signal component
extracted
component
chromaticity 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.)
Granted
Application number
JP3132579A
Other languages
Japanese (ja)
Other versions
JPS6158079B2 (en
Inventor
Kazumasa Enami
Keinosuke Murakami
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP3132579A priority Critical patent/JPS55123280A/en
Publication of JPS55123280A publication Critical patent/JPS55123280A/en
Publication of JPS6158079B2 publication Critical patent/JPS6158079B2/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 lessen remarkably the deterioration of picture quality due to the lowering of resolution by separating and extracting component spectra by a filter which uses a comb line filter for a still picture and does not use a frame delay element for a motion picture. CONSTITUTION:Two one-frame delay elements 5 are cascaded and color picture signals with a period difference of two frames obtained from both the terminals are averaged through an adder and 1/2 multiplier; and the mean signal and a color picture with one-frame delay obtained from the intermediate point of the cascade connection are supplied to a subtracter to extract carrier chrominance signal component spectra through comb line filtering operation, and through rotary phase modifier 4, chromaticity signal component Cv of a still picture signal is extracted. On the other hand, two one-line delay lines 3 are cascaded and through the same operation, chromaticity signal component CH of a motion picture is extracted. Then, respective components are continuously extracted through the decision of detection part 6. This chromaticity signal component is extracted through BPF2 and an original picture signal from the intermediate cascade point of delay lines is applied to rotary phase modifier 4 to subtract the chromaticity signal component of BPF2 from a high-frequency phase-matched component, so that a luminance signal component can be obtained.
JP3132579A 1979-03-16 1979-03-16 Luminance and chromaticity signal separator Granted JPS55123280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3132579A JPS55123280A (en) 1979-03-16 1979-03-16 Luminance and chromaticity signal separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3132579A JPS55123280A (en) 1979-03-16 1979-03-16 Luminance and chromaticity signal separator

Publications (2)

Publication Number Publication Date
JPS55123280A true JPS55123280A (en) 1980-09-22
JPS6158079B2 JPS6158079B2 (en) 1986-12-10

Family

ID=12328104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3132579A Granted JPS55123280A (en) 1979-03-16 1979-03-16 Luminance and chromaticity signal separator

Country Status (1)

Country Link
JP (1) JPS55123280A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544575A1 (en) * 1983-04-12 1984-10-19 Bosch Gmbh Robert DEVICE FOR THE SEPARATION OF INFORMATION LUMINANCE AND CHROMINANCE OF A COLOR TELEVISION SIGNAL
JPS6065681A (en) * 1983-09-21 1985-04-15 Nec Home Electronics Ltd Dynamic information detecting system of picture
JPS6065680A (en) * 1983-09-21 1985-04-15 Nec Home Electronics Ltd Detector of dynamic information of picture
US4550340A (en) * 1984-02-06 1985-10-29 Rca Corporation Apparatus for frame-to-frame comb filtering composite TV signal
US4553158A (en) * 1984-02-06 1985-11-12 Rca Corporation Circuitry for correcting motion induced errors in frame comb filtered video signals
US4555723A (en) * 1984-02-06 1985-11-26 Rca Corporation Apparatus for reducing motion induced distortion in a frame combed chrominance signal
US4597007A (en) * 1984-02-06 1986-06-24 Rca Corporation Circuitry for correcting frame combed luminance signal for motion induced distortion
US4638351A (en) * 1982-09-20 1987-01-20 British Broadcasting Corporation Adaptive filter for use in color video signal processing
JPS62163490A (en) * 1986-01-13 1987-07-20 Matsushita Electric Ind Co Ltd Luminance signal carrier color signal separation device
US4701785A (en) * 1986-10-27 1987-10-20 Rca Corporation Frame comb filter having freeze frame feature
US4707731A (en) * 1986-04-03 1987-11-17 Dubner Computer Systems, Inc. Encoded video television graphics system
US4710801A (en) * 1985-04-29 1987-12-01 International Business Machines Corporation System for decomposition of NTSC color video signals using two frame buffers
US4789890A (en) * 1985-12-05 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Judgement circuit and adaptive filter incorporating the same
US4794454A (en) * 1986-10-06 1988-12-27 Hitachi, Ltd. Movement detection circuit of a video signal used in a television receiver
US4814862A (en) * 1985-06-11 1989-03-21 Thomson Grand Public Method for separating the luminance and chrominance signals of a PAL or SECAM composite video signal and a device for the practical application of said method
US4893176A (en) * 1985-10-09 1990-01-09 Faroudja Y C Adaptive comb filter for quadrature modulated color television systems
US4974065A (en) * 1983-12-12 1990-11-27 Mitsubishi Denki Kabushiki Kaisha Adaptive comb filter
US4984068A (en) * 1987-12-29 1991-01-08 Victor Company Of Japan, Ltd. Motion-adaptive device for separating luminance signal and color signal
US5045929A (en) * 1989-05-13 1991-09-03 Zenith Electronics Corporation Three dimensional luma/chroma separation and vertical detail generation
US5097321A (en) * 1989-04-28 1992-03-17 Accom Three dimensional adaptive decoding system and method
US5140410A (en) * 1990-05-23 1992-08-18 Samsung Electronics Co., Ltd. Chrominance signal mixing circuit in a motion adaptive type signal separator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347984A (en) * 1961-07-10 1967-10-17 Minnesota Mining & Mfg Electronic dropout suppressor
JPS4873020A (en) * 1971-12-20 1973-10-02
JPS5018429U (en) * 1973-06-20 1975-02-28
JPS528491A (en) * 1975-07-04 1977-01-22 Bonhomme F R Connector
JPS532582U (en) * 1976-06-25 1978-01-11
JPS5313315A (en) * 1976-07-14 1978-02-06 Cbs Inc Comb filter unit
JPS5510201A (en) * 1978-04-28 1980-01-24 Oki Electric Ind Co Ltd Separator for color television luminance signal and chromaticity signal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347984A (en) * 1961-07-10 1967-10-17 Minnesota Mining & Mfg Electronic dropout suppressor
JPS4873020A (en) * 1971-12-20 1973-10-02
JPS5018429U (en) * 1973-06-20 1975-02-28
JPS528491A (en) * 1975-07-04 1977-01-22 Bonhomme F R Connector
JPS532582U (en) * 1976-06-25 1978-01-11
JPS5313315A (en) * 1976-07-14 1978-02-06 Cbs Inc Comb filter unit
JPS5510201A (en) * 1978-04-28 1980-01-24 Oki Electric Ind Co Ltd Separator for color television luminance signal and chromaticity signal

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638351A (en) * 1982-09-20 1987-01-20 British Broadcasting Corporation Adaptive filter for use in color video signal processing
US4641180A (en) * 1983-04-04 1987-02-03 Robert Bosch Gmbh Electronic circuit apparatus for separating the luminance and color information of a color television signal
FR2544575A1 (en) * 1983-04-12 1984-10-19 Bosch Gmbh Robert DEVICE FOR THE SEPARATION OF INFORMATION LUMINANCE AND CHROMINANCE OF A COLOR TELEVISION SIGNAL
JPS6065681A (en) * 1983-09-21 1985-04-15 Nec Home Electronics Ltd Dynamic information detecting system of picture
JPS6065680A (en) * 1983-09-21 1985-04-15 Nec Home Electronics Ltd Detector of dynamic information of picture
US4974065A (en) * 1983-12-12 1990-11-27 Mitsubishi Denki Kabushiki Kaisha Adaptive comb filter
US4550340A (en) * 1984-02-06 1985-10-29 Rca Corporation Apparatus for frame-to-frame comb filtering composite TV signal
US4553158A (en) * 1984-02-06 1985-11-12 Rca Corporation Circuitry for correcting motion induced errors in frame comb filtered video signals
US4555723A (en) * 1984-02-06 1985-11-26 Rca Corporation Apparatus for reducing motion induced distortion in a frame combed chrominance signal
US4597007A (en) * 1984-02-06 1986-06-24 Rca Corporation Circuitry for correcting frame combed luminance signal for motion induced distortion
US4710801A (en) * 1985-04-29 1987-12-01 International Business Machines Corporation System for decomposition of NTSC color video signals using two frame buffers
US4814862A (en) * 1985-06-11 1989-03-21 Thomson Grand Public Method for separating the luminance and chrominance signals of a PAL or SECAM composite video signal and a device for the practical application of said method
US4893176A (en) * 1985-10-09 1990-01-09 Faroudja Y C Adaptive comb filter for quadrature modulated color television systems
US4789890A (en) * 1985-12-05 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Judgement circuit and adaptive filter incorporating the same
JPS62163490A (en) * 1986-01-13 1987-07-20 Matsushita Electric Ind Co Ltd Luminance signal carrier color signal separation device
US4707731A (en) * 1986-04-03 1987-11-17 Dubner Computer Systems, Inc. Encoded video television graphics system
US4794454A (en) * 1986-10-06 1988-12-27 Hitachi, Ltd. Movement detection circuit of a video signal used in a television receiver
US4701785A (en) * 1986-10-27 1987-10-20 Rca Corporation Frame comb filter having freeze frame feature
US4984068A (en) * 1987-12-29 1991-01-08 Victor Company Of Japan, Ltd. Motion-adaptive device for separating luminance signal and color signal
US5097321A (en) * 1989-04-28 1992-03-17 Accom Three dimensional adaptive decoding system and method
US5045929A (en) * 1989-05-13 1991-09-03 Zenith Electronics Corporation Three dimensional luma/chroma separation and vertical detail generation
US5140410A (en) * 1990-05-23 1992-08-18 Samsung Electronics Co., Ltd. Chrominance signal mixing circuit in a motion adaptive type signal separator

Also Published As

Publication number Publication date
JPS6158079B2 (en) 1986-12-10

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