JPS6469193A - Separation filter for image correlation corresponding luminance signal and chrominance signal - Google Patents

Separation filter for image correlation corresponding luminance signal and chrominance signal

Info

Publication number
JPS6469193A
JPS6469193A JP22881987A JP22881987A JPS6469193A JP S6469193 A JPS6469193 A JP S6469193A JP 22881987 A JP22881987 A JP 22881987A JP 22881987 A JP22881987 A JP 22881987A JP S6469193 A JPS6469193 A JP S6469193A
Authority
JP
Japan
Prior art keywords
chrominance signal
signal
luminance signal
vertical direction
correlation
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
JP22881987A
Other languages
Japanese (ja)
Inventor
Reiko Tamura
Hiroshi Ito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP22881987A priority Critical patent/JPS6469193A/en
Publication of JPS6469193A publication Critical patent/JPS6469193A/en
Pending legal-status Critical Current

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  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To reduce dot disturbance by properly using luminance signal and chrominance signal separation filters according to the image correlation in a vertical direction and a horizontal direction and decreasing the influence cause by the leakage of a luminance signal and a chrominance signal for the mutual channel. CONSTITUTION:The image correlation of a composite video signal in the vertical direction and the horizontal direction is detected by a vertical correlation detection means 13a and a horizontal correlation detection means 13b. Then, based on this correlation, one of the horizontal direction chrominance signal extraction filter 6b, the vertical direction chrominance signal extraction filter 6a or the horizontal and vertical direction chrominance signal extraction filter 6c is properly used. Thus, the influence caused by the leakage of the luminance signal and the chrominance signal in a area where an image is violently changed for the mutual channel is decreased and the dot disturbance can be reduced.
JP22881987A 1987-09-10 1987-09-10 Separation filter for image correlation corresponding luminance signal and chrominance signal Pending JPS6469193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22881987A JPS6469193A (en) 1987-09-10 1987-09-10 Separation filter for image correlation corresponding luminance signal and chrominance signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22881987A JPS6469193A (en) 1987-09-10 1987-09-10 Separation filter for image correlation corresponding luminance signal and chrominance signal

Publications (1)

Publication Number Publication Date
JPS6469193A true JPS6469193A (en) 1989-03-15

Family

ID=16882357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22881987A Pending JPS6469193A (en) 1987-09-10 1987-09-10 Separation filter for image correlation corresponding luminance signal and chrominance signal

Country Status (1)

Country Link
JP (1) JPS6469193A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273018A (en) * 1989-12-08 1994-06-01 Mitsubishi Electric Corp Brightness signal/color signal separating filter
US5386244A (en) * 1989-12-08 1995-01-31 Mitsubishi Denki Kabushiki Kaisha Brightness signal/color signal separation filter including an image correction judging circuit
US5392075A (en) * 1990-07-23 1995-02-21 Mitsubishi Denki Kabushiki Kaisha Brightness signal/color signal separation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273018A (en) * 1989-12-08 1994-06-01 Mitsubishi Electric Corp Brightness signal/color signal separating filter
US5386244A (en) * 1989-12-08 1995-01-31 Mitsubishi Denki Kabushiki Kaisha Brightness signal/color signal separation filter including an image correction judging circuit
US5392075A (en) * 1990-07-23 1995-02-21 Mitsubishi Denki Kabushiki Kaisha Brightness signal/color signal separation

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