JPS62120789U - - Google Patents
Info
- Publication number
- JPS62120789U JPS62120789U JP1986007847U JP784786U JPS62120789U JP S62120789 U JPS62120789 U JP S62120789U JP 1986007847 U JP1986007847 U JP 1986007847U JP 784786 U JP784786 U JP 784786U JP S62120789 U JPS62120789 U JP S62120789U
- Authority
- JP
- Japan
- Prior art keywords
- switch element
- brightness
- transistor
- unblanking
- coupled
- 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 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案による一実施例の回路図である
。第２図は従来の輝度制御回路図、第３図は第２
図の動作波形図である。
１，２，９：輝度制御用可変抵抗器、３，４，
１３：抵抗器、５，５′：ＮＰＮ形トランジスタ
、６，７：スイツチ回路、８：輝度増幅回路、１
０，１１：アンブランキング発生回路、１２：ダ
イオード、１４：コンデンサ。
FIG. 1 is a circuit diagram of an embodiment of the present invention. Figure 2 is a conventional brightness control circuit diagram, and Figure 3 is a diagram of a conventional brightness control circuit.
FIG. 1, 2, 9: Brightness control variable resistor, 3, 4,
13: Resistor, 5, 5': NPN transistor, 6, 7: Switch circuit, 8: Brightness amplifier circuit, 1
0, 11: unblanking generation circuit, 12: diode, 14: capacitor.
Claims (1)
区分表示する表示装置において、掃引期間に対応
する第１アンブランキング信号と、輝度変調区間
に対応する第２アンプランキング信号の各々発生
回路を有し、その各々の出力電圧は各々、抵抗器
を通じて、前記アンブランキング信号の少なくと
も一方がアンブランキングレベルのときに導通方
向となるスイツチ素子に結合し、前記スイツチ素
子のスイツチ電圧を輝度可変信号により制御する
と共に、前記スイツチ素子に流れる電流を輝度信
号出力として利用することを特徴とする輝度制御
回路。 (2) 前記スイツチ素子としてトランジスタを使
用し、前記抵抗器は前記トランジスタのエミツタ
に結合し、前記輝度可変信号は、前記トランジス
タのベースに結合し、前記トランジスタのコレク
タ電流を前記輝度信号出力として利用する第１項
記載の輝度制御回路。[Claims for Utility Model Registration] (1) In a display device that segmentally displays a predetermined section during a sweep period by luminance modulation, a first unblanking signal corresponding to the sweep period and a second unblanking signal corresponding to the luminance modulation section are provided. Each of the amplifier blanking signals has a generating circuit, the output voltage of each of which is coupled through a resistor to a switch element that becomes conductive when at least one of the unblanking signals is at the unblanking level, and the switch element A brightness control circuit characterized in that the switch voltage of the switch element is controlled by a brightness variable signal, and the current flowing through the switch element is used as a brightness signal output. (2) A transistor is used as the switch element, the resistor is coupled to the emitter of the transistor, the brightness variable signal is coupled to the base of the transistor, and the collector current of the transistor is used as the brightness signal output. 2. The brightness control circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986007847U JPS62120789U (en) | 1986-01-24 | 1986-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986007847U JPS62120789U (en) | 1986-01-24 | 1986-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62120789U true JPS62120789U (en) | 1987-07-31 |
Family
ID=30791680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986007847U Pending JPS62120789U (en) | 1986-01-24 | 1986-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62120789U (en) |
-
1986
- 1986-01-24 JP JP1986007847U patent/JPS62120789U/ja active Pending
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