JPS6469192A - 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
- JPS6469192A JPS6469192A JP22881887A JP22881887A JPS6469192A JP S6469192 A JPS6469192 A JP S6469192A JP 22881887 A JP22881887 A JP 22881887A JP 22881887 A JP22881887 A JP 22881887A JP S6469192 A JPS6469192 A JP S6469192A
- Authority
- JP
- Japan
- Prior art keywords
- chrominance signal
- signal
- image correlation
- vertical direction
- luminance 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
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 of a vertical direction and a horizontal direction and an oblique direction and decreasing the leakage of a luminance signal and a chrominance signal for the mutual channel. CONSTITUTION:A sampled value extracted by one line delay circuits 5a and 5b is supplied to the vertical direction chrominance signal extraction filter 6a, the horizontal direction chrominance signal extraction filter 6b, the horizontal and vertical direction chrominance signal extraction filter 6c and an image correlation decision circuit 7. That means, by deciding the image correlation of a composite video signal in the vertical direction, the horizontal direction and the oblique direction, the filters 6a, 6b or 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 |
|---|---|---|---|
| JP22881887A JPS6469192A (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 |
|---|---|---|---|
| JP22881887A JPS6469192A (en) | 1987-09-10 | 1987-09-10 | Separation filter for image correlation corresponding luminance signal and chrominance signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6469192A true JPS6469192A (en) | 1989-03-15 |
Family
ID=16882340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22881887A Pending JPS6469192A (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) | JPS6469192A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415399A2 (en) * | 1989-08-30 | 1991-03-06 | Kabushiki Kaisha Toshiba | Luminance/chrominance separation circuit |
| 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 JP22881887A patent/JPS6469192A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415399A2 (en) * | 1989-08-30 | 1991-03-06 | Kabushiki Kaisha Toshiba | Luminance/chrominance separation circuit |
| 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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