JPH0339974U - - Google Patents
Info
- Publication number
- JPH0339974U JPH0339974U JP10068289U JP10068289U JPH0339974U JP H0339974 U JPH0339974 U JP H0339974U JP 10068289 U JP10068289 U JP 10068289U JP 10068289 U JP10068289 U JP 10068289U JP H0339974 U JPH0339974 U JP H0339974U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- composite video
- detection
- differential amplifier
- operates
- 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
- Synchronizing For Television (AREA)
Description
第１図は本考案を実施した同期安定化回路の構
成を示す回路図である。第２図は従来例の回路図
である。第３図は垂直周期で見た複合映像信号に
雑音が混入した状態を示す信号波形図、第４図は
その複合映像信号の雑音混入部分について水平周
期で拡大した信号波形図である。第５図は第１図
の説明図である。
１…映像処理ＩＣ、３…同期分離段、４…雑音
成分、５…差動増幅器、６…検出回路。
FIG. 1 is a circuit diagram showing the configuration of a synchronous stabilization circuit embodying the present invention. FIG. 2 is a circuit diagram of a conventional example. FIG. 3 is a signal waveform diagram showing a state in which noise is mixed in a composite video signal viewed in a vertical period, and FIG. 4 is a signal waveform diagram showing a noise-mixed portion of the composite video signal enlarged in a horizontal period. FIG. 5 is an explanatory diagram of FIG. 1. DESCRIPTION OF SYMBOLS 1...Video processing IC, 3...Synchronization separation stage, 4...Noise component, 5...Differential amplifier, 6...Detection circuit.
Claims (1)
合映像信号の変動分を検出する検出回路と、該検
出回路の検出出力と前記複合映像信号を入力し前
記複合映像信号に含まれる比較的周波数の低い雑
音成分による複合映像信号の歪を前記検出出力に
よつて補正するように動作する差動増幅器とから
成る同期安定化回路。 a detection circuit that detects fluctuations in the composite video signal by envelope detection of the composite video signal; and a differential amplifier that operates to correct distortion of the composite video signal due to low noise components using the detection output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068289U JPH0339974U (en) | 1989-08-29 | 1989-08-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068289U JPH0339974U (en) | 1989-08-29 | 1989-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339974U true JPH0339974U (en) | 1991-04-17 |
Family
ID=31649674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10068289U Pending JPH0339974U (en) | 1989-08-29 | 1989-08-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339974U (en) |
-
1989
- 1989-08-29 JP JP10068289U patent/JPH0339974U/ja active Pending
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