JPS63149668U - - Google Patents
Info
- Publication number
- JPS63149668U JPS63149668U JP4157987U JP4157987U JPS63149668U JP S63149668 U JPS63149668 U JP S63149668U JP 4157987 U JP4157987 U JP 4157987U JP 4157987 U JP4157987 U JP 4157987U JP S63149668 U JPS63149668 U JP S63149668U
- Authority
- JP
- Japan
- Prior art keywords
- black level
- circuit
- video signal
- correction circuit
- level correction
- 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 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は、本考案の実施例を示すブロツク回路
図、第２図は、第１図の実施例を説明する為の信
号波形図、第３図は、電源回路７の出力特性を説
明する為の特性図である。
主要部分の符号の説明、２……黒レベル検出回
路、３……ＣＲＴドライブ回路、４……黒レベル
補正回路、５……レベル検出回路。
1 is a block circuit diagram showing an embodiment of the present invention, FIG. 2 is a signal waveform diagram for explaining the embodiment of FIG. 1, and FIG. 3 is an illustration of the output characteristics of the power supply circuit 7. FIG. Explanation of symbols of main parts, 2... Black level detection circuit, 3... CRT drive circuit, 4... Black level correction circuit, 5... Level detection circuit.
Claims (1)
回路と、前記黒レベル補正回路の出力に応じて表
示器を駆動する表示駆動回路とを含むビデオ信号
処理回路であつて、前記表示器駆動回路の電源電
圧の変動を検出してレベル検出信号を得る検出回
路を備え、前記黒レベル補正回路は前記レベル検
出信号に応じて前記黒レベルを調整することを特
徴とするビデオ信号処理回路。 A video signal processing circuit including a black level correction circuit that corrects a black level of a video signal, and a display drive circuit that drives a display according to an output of the black level correction circuit, the display drive circuit having a power source A video signal processing circuit comprising: a detection circuit that detects voltage fluctuations to obtain a level detection signal, and wherein the black level correction circuit adjusts the black level according to the level detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4157987U JPS63149668U (en) | 1987-03-20 | 1987-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4157987U JPS63149668U (en) | 1987-03-20 | 1987-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63149668U true JPS63149668U (en) | 1988-10-03 |
Family
ID=30856711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4157987U Pending JPS63149668U (en) | 1987-03-20 | 1987-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63149668U (en) |
-
1987
- 1987-03-20 JP JP4157987U patent/JPS63149668U/ja active Pending
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