JPS6469193A - Separation filter for image correlation corresponding luminance signal and chrominance signal - Google Patents
Separation filter for image correlation corresponding luminance signal and chrominance signalInfo
- 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
Links
Landscapes
- 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.
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)
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 |
-
1987
- 1987-09-10 JP JP22881987A patent/JPS6469193A/en active Pending
Cited By (3)
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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