JPH0210682U - - Google Patents
Info
- Publication number
- JPH0210682U JPH0210682U JP8896188U JP8896188U JPH0210682U JP H0210682 U JPH0210682 U JP H0210682U JP 8896188 U JP8896188 U JP 8896188U JP 8896188 U JP8896188 U JP 8896188U JP H0210682 U JPH0210682 U JP H0210682U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- color
- color switching
- determining
- black
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
第１図は本考案の一実施例の液晶表示装置の色
切換回路を示すブロツク図、第２図は本考案の他
の実施例を示すブロツク図、第３図は液晶パネル
のカラーフイルタ配列を説明する説明図、第４図
は液晶モジユール及びその周辺回路を示すブロツ
ク図、第５図は従来の色切換回路及びその動作を
説明する説明図である。
２１，２２，２３……入力端子、２４……色切
換回路、２５，２６，２７……出力端子、２９…
…色切換信号発生回路、３１……色信号判定回路
。
Fig. 1 is a block diagram showing a color switching circuit of a liquid crystal display device according to one embodiment of the present invention, Fig. 2 is a block diagram showing another embodiment of the present invention, and Fig. 3 shows a color filter arrangement of a liquid crystal panel. FIG. 4 is a block diagram showing a liquid crystal module and its peripheral circuit, and FIG. 5 is an explanatory diagram showing a conventional color switching circuit and its operation. 21, 22, 23... Input terminal, 24... Color switching circuit, 25, 26, 27... Output terminal, 29...
...Color switching signal generation circuit, 31...Color signal determination circuit.
Claims (1)
得られるＲ，Ｇ，Ｂの３原色信号を、液晶パネル
を構成する水平方向のＲ，Ｇ，Ｂの画素配列に対
応して、水平走査ライン毎に切換えて出力する色
切換手段と、 前記複合映像信号にある色信号の有無を判定す
る判定手段と、 この判定手段の判定信号に基づいて色信号があ
る時は前記色切換手段に色切換動作を行なわせ、
白黒信号の時は前記の色切換動作を停止させる制
御を行う手段と、 前記色切換手段に設けられ、前記色切換手段に
入力される信号が白黒信号の時は、前記判定手段
の判定信号に基づいて白黒信号をそのまま通過さ
せて出力する手段と、 を具備したことを特徴とする液晶表示装置の色
切換回路。[Claims for Utility Model Registration] Three primary color signals of R, G, and B obtained by demodulating a composite video signal supplied as an input are applied to a horizontal pixel array of R, G, and B constituting a liquid crystal panel. Correspondingly, there is a color switching means for switching and outputting each horizontal scanning line, a determining means for determining the presence or absence of a color signal in the composite video signal, and a determining means for determining the presence or absence of a color signal in the composite video signal; causing the color switching means to perform a color switching operation;
means for controlling the color switching operation to be stopped when the signal is a black and white signal; and a means provided in the color switching means for controlling the judgment signal of the judgment means when the signal input to the color switching means is a black and white signal. 1. A color switching circuit for a liquid crystal display device, comprising: a means for passing a black and white signal as it is based on the signal and outputting it;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8896188U JPH0210682U (en) | 1988-07-06 | 1988-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8896188U JPH0210682U (en) | 1988-07-06 | 1988-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210682U true JPH0210682U (en) | 1990-01-23 |
Family
ID=31313514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8896188U Pending JPH0210682U (en) | 1988-07-06 | 1988-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210682U (en) |
-
1988
- 1988-07-06 JP JP8896188U patent/JPH0210682U/ja active Pending
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