JPS6464470A - Filter for television picture - Google Patents
Filter for television pictureInfo
- Publication number
- JPS6464470A JPS6464470A JP62220406A JP22040687A JPS6464470A JP S6464470 A JPS6464470 A JP S6464470A JP 62220406 A JP62220406 A JP 62220406A JP 22040687 A JP22040687 A JP 22040687A JP S6464470 A JPS6464470 A JP S6464470A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- high frequency
- component
- frequency component
- constant
- 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
Links
Abstract
PURPOSE:To obtain a filter for a picture stably operating without losing a natural feeling by processing the high frequency component of a picture signal clamped to a prescribed level by a temporal filter constant in a time constant. CONSTITUTION:The high frequency component of an input TV picture signal by an LPF 1, a subtracter 2 is converted and clamped to a prescribed level range by an overflow and undervalue circuit 3 to limit a bit length. This high frequency component is stably processed in a time direction by the temporal filter 4 provided with a time constant circuit 5 constant in the time constant or the like to output the high frequency component (e) having no unnatural feeling. The component (e), a component (c) passing no filter and the minimum component of an absolute value of the average value of both the components are outputted to an adder through an absolute value minimum selecting circuit 7. According to this constitution, The filter for the TV picture stably operating without losing the natural feeling is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62220406A JPH0681270B2 (en) | 1987-09-04 | 1987-09-04 | Television image filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62220406A JPH0681270B2 (en) | 1987-09-04 | 1987-09-04 | Television image filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6464470A true JPS6464470A (en) | 1989-03-10 |
JPH0681270B2 JPH0681270B2 (en) | 1994-10-12 |
Family
ID=16750618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62220406A Expired - Lifetime JPH0681270B2 (en) | 1987-09-04 | 1987-09-04 | Television image filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0681270B2 (en) |
-
1987
- 1987-09-04 JP JP62220406A patent/JPH0681270B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0681270B2 (en) | 1994-10-12 |
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