JPS6480193A - Luminance signal chrominance signal separation filter corresponding to correlation of picture - Google Patents
Luminance signal chrominance signal separation filter corresponding to correlation of pictureInfo
- Publication number
- JPS6480193A JPS6480193A JP23842187A JP23842187A JPS6480193A JP S6480193 A JPS6480193 A JP S6480193A JP 23842187 A JP23842187 A JP 23842187A JP 23842187 A JP23842187 A JP 23842187A JP S6480193 A JPS6480193 A JP S6480193A
- Authority
- JP
- Japan
- Prior art keywords
- correlation
- picture
- horizontal
- vertical
- output
- 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 interference by detecting picture correlation in the vertical and horizontal direction from the value at noticed sample point and vicinity sample point so as to decide the correlation of the picture and using an output of a horizontal or vertical direction filter as an output of a luminance signal chrominance signal separation filter with respect to a picture having especially strong correlation depending on the result of discrimination. CONSTITUTION:Vertical, horizontal filter outputs 104, 106 and a horizontal/vertical chrominance signal extraction filter output 108 are sent to a switch circuit 8 via a compensation delay circuit respectively. A picture correlation discrimination circuit 7 detects the correlation of vertical and horizontal picture with respect to the noticed sample point and selects the output of the vertical chrominance signal extraction filter 104 when the correlation is especially strong in the vertical direction. When the correlation is especially strong in the horizontal direction, the output of the horizontal direction chrominance signal extraction filter 106 is selected. In other case, the switch circuit 8 is switched to select the output of the horizontal/vertical direction chrominance signal extraction filter 108. Thus, the effect of leakage to mutual channels for luminance and chrominance signals in a region with rapid picture change is reduced to reduce dot disturbance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23842187A JPS6480193A (en) | 1987-09-21 | 1987-09-21 | Luminance signal chrominance signal separation filter corresponding to correlation of picture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23842187A JPS6480193A (en) | 1987-09-21 | 1987-09-21 | Luminance signal chrominance signal separation filter corresponding to correlation of picture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6480193A true JPS6480193A (en) | 1989-03-27 |
Family
ID=17029958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23842187A Pending JPS6480193A (en) | 1987-09-21 | 1987-09-21 | Luminance signal chrominance signal separation filter corresponding to correlation of picture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6480193A (en) |
-
1987
- 1987-09-21 JP JP23842187A patent/JPS6480193A/en active Pending
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