JPS5920781U - automatic white control device - Google Patents
automatic white control deviceInfo
- Publication number
- JPS5920781U JPS5920781U JP11524882U JP11524882U JPS5920781U JP S5920781 U JPS5920781 U JP S5920781U JP 11524882 U JP11524882 U JP 11524882U JP 11524882 U JP11524882 U JP 11524882U JP S5920781 U JPS5920781 U JP S5920781U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- sampling
- detection
- gain control
- 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
- Processing Of Color Television Signals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は加色混合特性を示す特性図、第２図はこの発明
に係る自動白色制御装置の一実施例を示す回路図、第３
図ａ ”−ｅは第２図に示す装置の動作を説明する為の
信号波形図、第４図は第３図に示す比較回路の入出力特
性を示す特性図、第５図は同じく直流制御増幅回路の利
得特性を示す特性図である。
１１・・・色信号処理回路、１２・・・映像信号処理回
路、１３・・・マトリクス回路、１４・・・受像管、１
５・・・自動白色制御装置、１６・・・カソード電流検
出回路、１７・・・検出信号発生回路、１８・・・アナ
ログスイッチ、１９・・・サンプリング回路、２０・・
・比較回路、２１・・・直流制御増幅回路。FIG. 1 is a characteristic diagram showing additive color mixing characteristics, FIG. 2 is a circuit diagram showing an embodiment of an automatic white color control device according to the present invention, and FIG.
Figures a"-e are signal waveform diagrams to explain the operation of the device shown in Figure 2, Figure 4 is a characteristic diagram showing the input/output characteristics of the comparator circuit shown in Figure 3, and Figure 5 is also a DC control It is a characteristic diagram showing gain characteristics of an amplifier circuit. 11... Color signal processing circuit, 12... Video signal processing circuit, 13... Matrix circuit, 14... Picture tube, 1
5... Automatic white control device, 16... Cathode current detection circuit, 17... Detection signal generation circuit, 18... Analog switch, 19... Sampling circuit, 20...
- Comparison circuit, 21... DC control amplifier circuit.
Claims (1)
係しない部分に所定の輝度レベルを有するように検出信
号を挿入する合成回路と、この合成回路の出力端と受像
管のカソードとの間の信号伝送ラインに挿入される利得
制御型増幅回路と、前記受像管のカソード電流を検出す
るカソード電流検出回路と、このカソード電流検出回路
の検出出力を前記検出信号の挿入位置でサンプリングす
るサンプリング回路と、前記サンプリング回路のサンプ
リング出力と基準電圧とを比較し前記利得制御型増幅回
路の利得を制御する利得制御信号を出力する比較回路と
を具備した自動白色ル制御装置。A synthesis circuit that inserts a detection signal into the video signal so that a portion unrelated to the picture signal contained in the video signal has a predetermined brightness level, and a connection between the output end of the synthesis circuit and the cathode of the picture tube. a gain control type amplifier circuit inserted into a signal transmission line; a cathode current detection circuit for detecting the cathode current of the picture tube; and a sampling circuit for sampling the detection output of the cathode current detection circuit at the insertion position of the detection signal. , a comparison circuit that compares the sampling output of the sampling circuit with a reference voltage and outputs a gain control signal for controlling the gain of the gain control type amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11524882U JPS5920781U (en) | 1982-07-29 | 1982-07-29 | automatic white control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11524882U JPS5920781U (en) | 1982-07-29 | 1982-07-29 | automatic white control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5920781U true JPS5920781U (en) | 1984-02-08 |
Family
ID=30266102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11524882U Pending JPS5920781U (en) | 1982-07-29 | 1982-07-29 | automatic white control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5920781U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60186187A (en) * | 1984-03-05 | 1985-09-21 | Sony Corp | White level stabilizing circuit |
| JPH0254109U (en) * | 1988-10-14 | 1990-04-19 |
-
1982
- 1982-07-29 JP JP11524882U patent/JPS5920781U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60186187A (en) * | 1984-03-05 | 1985-09-21 | Sony Corp | White level stabilizing circuit |
| JPH0254109U (en) * | 1988-10-14 | 1990-04-19 | ||
| JPH0527763Y2 (en) * | 1988-10-14 | 1993-07-15 |
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