JPS6413859U - - Google Patents
Info
- Publication number
- JPS6413859U JPS6413859U JP8420687U JP8420687U JPS6413859U JP S6413859 U JPS6413859 U JP S6413859U JP 8420687 U JP8420687 U JP 8420687U JP 8420687 U JP8420687 U JP 8420687U JP S6413859 U JPS6413859 U JP S6413859U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- signal
- level discrimination
- video signal
- circuit
- 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
- 238000010586 diagram Methods 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案の一実施例である映像信号中の
色信号のノイズ低減回路９の基本的な構成を示す
ブロツク図、第２図は本考案の他の実施例である
映像信号中の色信号のノイズ低減回路１７の基本
的な構成を示すブロツク図、第３図は巡回型ノイ
ズフイルタ１の基本的な構成を示すブロツク図、
第４図は従来技術の巡回型ノイズフイルタ１、お
よび本考案の一実施例である前記色信号のノイズ
低減回路９の各部における信号の波形図、第５図
は平均化回路６の基本的な構成を示すブロツク図
である。
９，１７……色信号のノイズ低減回路、１０…
…加算器、１１……減算器、１２……１Ｈ遅延線
、１３……振幅制限器、１４，１８……スイツチ
回路、１５……比較器、１６……平滑回路、１９
……加算・平均器。
FIG. 1 is a block diagram showing the basic configuration of a circuit 9 for reducing noise in a color signal in a video signal, which is an embodiment of the present invention, and FIG. A block diagram showing the basic configuration of the color signal noise reduction circuit 17; FIG. 3 is a block diagram showing the basic configuration of the cyclic noise filter 1;
FIG. 4 is a waveform diagram of signals in each part of the conventional cyclic noise filter 1 and the color signal noise reduction circuit 9 which is an embodiment of the present invention, and FIG. 5 is a basic diagram of the averaging circuit 6. FIG. 2 is a block diagram showing the configuration. 9, 17... color signal noise reduction circuit, 10...
... Adder, 11 ... Subtractor, 12 ... 1H delay line, 13 ... Amplitude limiter, 14, 18 ... Switch circuit, 15 ... Comparator, 16 ... Smoothing circuit, 19
...Adder/average device.
Claims (1)
に対応した切換え信号を出力するレベル弁別手段
と、 信号ラインに少なくとも１つ、並列に設けられ
たノイズ低減手段とを含み、 レベル弁別手段からの切換え信号によつて、ノ
イズ低減手段を選択的に用いるようにしたことを
特徴とする、そのような映像信号のノイズ低減回
路。[Claims for Utility Model Registration] Comprising a level discrimination means for level discrimination a luminance signal in a video signal and outputting a corresponding switching signal, and at least one noise reduction means provided in parallel on a signal line. . A noise reduction circuit for a video signal, characterized in that the noise reduction means is selectively used by a switching signal from the level discrimination means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8420687U JPS6413859U (en) | 1987-05-30 | 1987-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8420687U JPS6413859U (en) | 1987-05-30 | 1987-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6413859U true JPS6413859U (en) | 1989-01-24 |
Family
ID=31308902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8420687U Pending JPS6413859U (en) | 1987-05-30 | 1987-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6413859U (en) |
-
1987
- 1987-05-30 JP JP8420687U patent/JPS6413859U/ja active Pending
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