JPS62100778U - - Google Patents
Info
- Publication number
- JPS62100778U JPS62100778U JP12122585U JP12122585U JPS62100778U JP S62100778 U JPS62100778 U JP S62100778U JP 12122585 U JP12122585 U JP 12122585U JP 12122585 U JP12122585 U JP 12122585U JP S62100778 U JPS62100778 U JP S62100778U
- Authority
- JP
- Japan
- Prior art keywords
- signal processing
- contrast
- color
- video
- processing 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
- 239000002131 composite material Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は本考案のカラー画像表示装置のコント
ラストコントロール回路の一実施例を示す回路図
、第２図は従来のカラー画像表示装置のコントラ
ストコントロール回路を示す回路図である。
４１…コンポジツトカラービデオ信号入力端子
、４３…ビデオ・色信号処理用ＩＣ、４７，４８
…出力端子、６１…Ｒ，Ｇ，Ｂ信号入力端子、５
２…コントラスト調整用可変抵抗、５１…切換ス
イツチ、４５…利得制御用端子、６３…利得制御
手段。
FIG. 1 is a circuit diagram showing an embodiment of a contrast control circuit of a color image display device of the present invention, and FIG. 2 is a circuit diagram showing a contrast control circuit of a conventional color image display device. 41...Composite color video signal input terminal, 43...Video/color signal processing IC, 47, 48
...Output terminal, 61...R, G, B signal input terminal, 5
2... Variable resistor for contrast adjustment, 51... Changeover switch, 45... Gain control terminal, 63... Gain control means.
補正 昭６２．１．２１
考案の名称を次のように補正する。
考案の名称 カラー画像表示装置のコントラ
ストコントロール回路Amendment January 21, 1982 The name of the invention is amended as follows. Name of invention Contrast control circuit for color image display device
Claims (1)
・色信号処理を行つてビデオ出力段へ出力すると
共に利得制御によつて信号振幅を変えコンストラ
スト調整を行うコンポジツトカラービデオ信号処
理回路と、 赤、緑、青の三原色信号を入力し整形処理を行
つてビデオ出力段へ出力すると共に利得制御によ
つて信号振幅を変えコントラスト調整を行う三原
色信号処理回路と、 前記コンポジツトカラービデオ信号処理回路及
び前記三原色信号処理回路に使用するコントラス
ト調整用電圧を発生させるための１つのコントラ
スト調整用可変抵抗と、 この１つのコントラスト調整用可変抵抗によつ
て発生されたコントラスト調整用電圧を前記コン
ポジツトカラービデオ信号処理回路又は前記三原
色信号処理回路のいずれか一方へ切り換えて入力
するための切換スイツチとを具備したことを特徴
とするカラー画像表示装置のコントラストコント
ロール回路。[Claims for Utility Model Registration] A composite color video signal that inputs a composite color video signal, performs video and color signal processing, and outputs it to a video output stage, and also changes the signal amplitude by gain control and adjusts the contrast. a processing circuit; a three-primary color signal processing circuit that inputs the three primary color signals of red, green, and blue, performs shaping processing, and outputs the signal to the video output stage; the signal amplitude is changed by gain control to adjust the contrast; and the composite color One contrast adjustment variable resistor for generating contrast adjustment voltages used in the video signal processing circuit and the three primary color signal processing circuits, and the contrast adjustment voltage generated by this one contrast adjustment variable resistor. A contrast control circuit for a color image display device, comprising a changeover switch for switching input to either the composite color video signal processing circuit or the three primary color signal processing circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12122585U JPS62100778U (en) | 1985-08-06 | 1985-08-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12122585U JPS62100778U (en) | 1985-08-06 | 1985-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62100778U true JPS62100778U (en) | 1987-06-26 |
Family
ID=31010294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12122585U Pending JPS62100778U (en) | 1985-08-06 | 1985-08-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62100778U (en) |
-
1985
- 1985-08-06 JP JP12122585U patent/JPS62100778U/ja active Pending
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