JPS6471287A - Noise reducer - Google Patents
Noise reducerInfo
- Publication number
- JPS6471287A JPS6471287A JP62226350A JP22635087A JPS6471287A JP S6471287 A JPS6471287 A JP S6471287A JP 62226350 A JP62226350 A JP 62226350A JP 22635087 A JP22635087 A JP 22635087A JP S6471287 A JPS6471287 A JP S6471287A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- attenuators
- noise
- field
- 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)
- Picture Signal Circuits (AREA)
Abstract
PURPOSE:To improve picture quality with small sized and inexpensive constitution by controlling a feedback quantity at a noise reduced part of a luminance signal and a chrominance signal in response to field correlation quantity. CONSTITUTION:A digitized luminance signal is averaged by attenuators 21, 24, an adder 22 and a field memory 23 and the noise is suppressed. The chrominance signal is averaged by attenuators 34, 35, 40, 41, adders 36, 37 and field memories 38, 39 and noise is suppressed. The field correlation quantity of the luminance signal is detected by a correlation detecting circuit 25. The detection signal is given to the attenuators 21, 24, 34, 40 35, 41 as a control signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226350A JPS6471287A (en) | 1987-09-11 | 1987-09-11 | Noise reducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62226350A JPS6471287A (en) | 1987-09-11 | 1987-09-11 | Noise reducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6471287A true JPS6471287A (en) | 1989-03-16 |
Family
ID=16843784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62226350A Pending JPS6471287A (en) | 1987-09-11 | 1987-09-11 | Noise reducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6471287A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272891A (en) * | 1989-04-14 | 1990-11-07 | Hitachi Ltd | Chroma noise reducer |
JPH043666A (en) * | 1990-04-20 | 1992-01-08 | Matsushita Electric Ind Co Ltd | Noise eliminating circuit |
JPH0576025A (en) * | 1991-09-13 | 1993-03-26 | Matsushita Electric Ind Co Ltd | Noise reducing device |
US5333054A (en) * | 1991-12-10 | 1994-07-26 | Kabushiki Kaisha Toshiba | Apparatus for reducing noise in a video signal by processing a luminance and chrominance component |
WO2010150681A1 (en) * | 2009-06-25 | 2010-12-29 | コニカミノルタオプト株式会社 | Image input device |
JP2016219977A (en) * | 2015-05-19 | 2016-12-22 | キヤノン株式会社 | Imaging device, imaging system and image processing system |
-
1987
- 1987-09-11 JP JP62226350A patent/JPS6471287A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272891A (en) * | 1989-04-14 | 1990-11-07 | Hitachi Ltd | Chroma noise reducer |
JPH043666A (en) * | 1990-04-20 | 1992-01-08 | Matsushita Electric Ind Co Ltd | Noise eliminating circuit |
JPH0576025A (en) * | 1991-09-13 | 1993-03-26 | Matsushita Electric Ind Co Ltd | Noise reducing device |
US5333054A (en) * | 1991-12-10 | 1994-07-26 | Kabushiki Kaisha Toshiba | Apparatus for reducing noise in a video signal by processing a luminance and chrominance component |
WO2010150681A1 (en) * | 2009-06-25 | 2010-12-29 | コニカミノルタオプト株式会社 | Image input device |
JP5704069B2 (en) * | 2009-06-25 | 2015-04-22 | コニカミノルタ株式会社 | Image input device |
JP2016219977A (en) * | 2015-05-19 | 2016-12-22 | キヤノン株式会社 | Imaging device, imaging system and image processing system |
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