JPH0243076U - - Google Patents
Info
- Publication number
- JPH0243076U JPH0243076U JP12160588U JP12160588U JPH0243076U JP H0243076 U JPH0243076 U JP H0243076U JP 12160588 U JP12160588 U JP 12160588U JP 12160588 U JP12160588 U JP 12160588U JP H0243076 U JPH0243076 U JP H0243076U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- delay
- horizontal blanking
- video
- screen display
- 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
- Television Receiver Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
第１図は本考案の一実施例のＣＲＴデイスプレ
イ装置の要部を示す回路図、第２図は第１図の回
路による表示画面の一例を示す説明図、第３図は
本考案の他の実施例を示す回路図、第４図は従来
のＣＲＴデイスプレイ装置の要部を示す回路図で
ある。
１１……ブランキング信号入力端子、１２，１
４，２６……トランジスタ、１６……出力端子、
１７……外部信号源入力端子、１８……切換スイ
ツチ、２１，２３…インバータ、２２……コンデ
ンサ、Ａ……遅延手段。
FIG. 1 is a circuit diagram showing the main parts of a CRT display device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of a display screen using the circuit of FIG. 1, and FIG. FIG. 4 is a circuit diagram showing the main parts of a conventional CRT display device. 11...Blanking signal input terminal, 12,1
4, 26...transistor, 16...output terminal,
17... External signal source input terminal, 18... Changeover switch, 21, 23... Inverter, 22... Capacitor, A... Delay means.
Claims (1)
、 この手段からの水平ブランキング信号を遅延し
て位相遅れの信号を作成する遅延手段と、 この遅延手段からの位相遅れの信号を遅延前の
水平ブランキング信号と合成し、水平期間中に略
水平ブランキング幅の黒レベル部を有した画面表
示用信号を得る合成手段と、 この合成手段からの画面表示用信号と外部信号
源からの映像信号とを切り換えて、映像増幅段に
出力させる切換手段と、 を具備したことを特徴とするＣＲＴデイスプレ
イ装置。[Claims for Utility Model Registration] Means for generating a horizontally periodic blanking signal; Delay means for delaying the horizontal blanking signal from this means to create a phase-delayed signal; and Phase delay from this delay means. synthesis means for synthesizing the signal with the horizontal blanking signal before delay to obtain a screen display signal having a black level portion approximately equal to the horizontal blanking width during the horizontal period; and a screen display signal from the synthesis means. A CRT display device comprising: switching means for switching between a video signal from an external signal source and outputting the video signal to a video amplification stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160588U JPH0243076U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12160588U JPH0243076U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243076U true JPH0243076U (en) | 1990-03-26 |
Family
ID=31368765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12160588U Pending JPH0243076U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243076U (en) |
-
1988
- 1988-09-19 JP JP12160588U patent/JPH0243076U/ja active Pending
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