JPS6295379U - - Google Patents
Info
- Publication number
- JPS6295379U JPS6295379U JP18734285U JP18734285U JPS6295379U JP S6295379 U JPS6295379 U JP S6295379U JP 18734285 U JP18734285 U JP 18734285U JP 18734285 U JP18734285 U JP 18734285U JP S6295379 U JPS6295379 U JP S6295379U
- Authority
- JP
- Japan
- Prior art keywords
- vertical synchronization
- circuit
- signal
- gate pulse
- detection 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
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は第１図中の各部の波形を示すタイミング
チヤート図、及び第３図は従来例を示すブロツク
図である。
７……ノイズ検出装置、７ａ……ゲート回路、
７ｂ……垂直同期検出回路、７ｃ……ゲートパル
ス発生器、７ｅ……検波回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a timing chart showing waveforms of various parts in FIG. 1, and FIG. 3 is a block diagram showing a conventional example. 7... Noise detection device, 7a... Gate circuit,
7b... Vertical synchronization detection circuit, 7c... Gate pulse generator, 7e... Detection circuit.
Claims (1)
信号に応じて垂直帰線期間内の垂直同期信号の後
に続く信号に同期したゲートパルスを発生するゲ
ートパルス発生器と、 該ゲートパルス発生器からのゲートパルスによ
つて映像信号をゲーテイングするゲート回路と、 該ゲート回路の出力を検波する検波回路とを備
え、 該検波回路に得られる検波信号により映像信号
に所定レベル以上のノイズが重畳されていること
を検出することを特徴とするノイズ検出装置。[Claims for Utility Model Registration] A vertical synchronization detection circuit that detects a vertical synchronization signal, and synchronization with a signal following the vertical synchronization signal within a vertical retrace period in accordance with the vertical synchronization signal detected by the vertical synchronization detection circuit. a gate pulse generator that generates a gate pulse, a gate circuit that gates a video signal using the gate pulse from the gate pulse generator, and a detection circuit that detects an output of the gate circuit, the detection circuit comprising: A noise detection device characterized by detecting that noise of a predetermined level or higher is superimposed on a video signal using a detection signal obtained by a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18734285U JPS6295379U (en) | 1985-12-06 | 1985-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18734285U JPS6295379U (en) | 1985-12-06 | 1985-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295379U true JPS6295379U (en) | 1987-06-18 |
Family
ID=31137735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18734285U Pending JPS6295379U (en) | 1985-12-06 | 1985-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295379U (en) |
-
1985
- 1985-12-06 JP JP18734285U patent/JPS6295379U/ja active Pending
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