JPS6451783A - Noise reducing circuit - Google Patents
Noise reducing circuitInfo
- Publication number
- JPS6451783A JPS6451783A JP62208580A JP20858087A JPS6451783A JP S6451783 A JPS6451783 A JP S6451783A JP 62208580 A JP62208580 A JP 62208580A JP 20858087 A JP20858087 A JP 20858087A JP S6451783 A JPS6451783 A JP S6451783A
- Authority
- JP
- Japan
- Prior art keywords
- noise reducing
- noise
- extracted
- component
- input video
- 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
- Picture Signal Circuits (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To extend noise reducing effect to an intermediate frequency band, and to increase noise reduction quantity on the whole by amplitude-limiting dn output signal, extracted by a high band component extracting means, by a second amplitude limiting means, and afterward, subtracting said output signal from an input video signal by feeding back it. CONSTITUTION:A noise component, extracted by passing through an HPF 1 and a limiter 7, is subtracted from the input video signal Si by giving negative feedback to an input side from the output of the HPF 1 through the limiter 7. Then, the high band component Sc1 of a signal, the noise component of which has been reduced to some extent, is subtracted from the input video signal Si, and a low band component Sb1 is extracted. Namely, the noise reducing effect, provided with two operations of both a noise reducing operation by the feedback and the noise reducing operation by the feedfoeward of a customary example can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208580A JPS6451783A (en) | 1987-08-21 | 1987-08-21 | Noise reducing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208580A JPS6451783A (en) | 1987-08-21 | 1987-08-21 | Noise reducing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451783A true JPS6451783A (en) | 1989-02-28 |
Family
ID=16558539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62208580A Pending JPS6451783A (en) | 1987-08-21 | 1987-08-21 | Noise reducing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451783A (en) |
-
1987
- 1987-08-21 JP JP62208580A patent/JPS6451783A/en active Pending
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