JPS5816983U - Video projector video output circuit - Google Patents
Video projector video output circuitInfo
- Publication number
- JPS5816983U JPS5816983U JP11106281U JP11106281U JPS5816983U JP S5816983 U JPS5816983 U JP S5816983U JP 11106281 U JP11106281 U JP 11106281U JP 11106281 U JP11106281 U JP 11106281U JP S5816983 U JPS5816983 U JP S5816983U
- Authority
- JP
- Japan
- Prior art keywords
- video
- color signal
- primary color
- projector
- output 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.)
- Granted
Links
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (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図は本考案に係るビデオプロジェクタのコン−く−
ゼンス調整を行なう場合のブロック回路である。第２図
は本考案の要部をなす映像出力回路の回路図である。
３０：赤映像信号増幅回路、４０：線映像信号増幅回路
、Ｑ３□：赤映像信号増幅回路入力段トランジ、スタ、
Ｑ４□：縁映像信号増幅回路入力段トランジス多、ＳＷ
ｌ、ＳＷ２：スイッチ。Figure 1 is a diagram of a video projector according to the present invention.
This is a block circuit for adjusting the sense. FIG. 2 is a circuit diagram of a video output circuit which forms the main part of the present invention. 30: Red video signal amplification circuit, 40: Line video signal amplification circuit, Q3□: Red video signal amplification circuit input stage transistor, star,
Q4□: Edge video signal amplification circuit input stage transistors, SW
l, SW2: Switch.
Claims (1)
極線管の情報光を、拡大レンズ或はシュミット光学系を
介してスクリーン上に投写結像する方式のビデオプロジ
ェクタにおいて、赤原色信号増巾回路入力段のトランジ
スタのベースに設けられ、赤原色信号と第１の直流電圧
とを選択的に印加できるようにした第１のスイッチ手段
と、 緑原色信号増幅回路入力段のトランジスタのベースに設
けられ、緑原色信号と第２の直流電圧とを選択的に印加
できるようにした第２のスイッチ手段とを備えてなるこ
とを特徴とするビデオプロジェクタの映像出力回路。[Claims for Utility Model Registration] A video system in which information light from three cathode ray tubes corresponding to the three emitted colors constituting a color image is projected onto a screen via a magnifying lens or Schmidt optical system. In the projector, a first switch means is provided at the base of a transistor in an input stage of a red primary color signal amplification circuit, and is configured to selectively apply a red primary color signal and a first DC voltage; and a green primary color signal amplification circuit. A video output circuit for a video projector, characterized in that the second switch means is provided at the base of a transistor in an input stage and is capable of selectively applying a green primary color signal and a second DC voltage. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11106281U JPS5816983U (en) | 1981-07-28 | 1981-07-28 | Video projector video output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11106281U JPS5816983U (en) | 1981-07-28 | 1981-07-28 | Video projector video output circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5816983U true JPS5816983U (en) | 1983-02-02 |
| JPS633273Y2 JPS633273Y2 (en) | 1988-01-27 |
Family
ID=29905405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11106281U Granted JPS5816983U (en) | 1981-07-28 | 1981-07-28 | Video projector video output circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816983U (en) |
-
1981
- 1981-07-28 JP JP11106281U patent/JPS5816983U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS633273Y2 (en) | 1988-01-27 |
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