JPH0333486U - - Google Patents
Info
- Publication number
- JPH0333486U JPH0333486U JP9457289U JP9457289U JPH0333486U JP H0333486 U JPH0333486 U JP H0333486U JP 9457289 U JP9457289 U JP 9457289U JP 9457289 U JP9457289 U JP 9457289U JP H0333486 U JPH0333486 U JP H0333486U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- liquid crystal
- crystal display
- display surface
- image information
- 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 4
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の一実施例としてＯＨＰ装置の
全体の構成を概略的に示すブロツク図、第２図は
従来の投影装置におけるＬＣＤデバイスの制御回
路のブロツク図、第３図は第１図のＬＣＤデバイ
スの制御回路のブロツク図、第４図、第５図、第
６図、及び第７図はマイクロプロセツサの処理プ
ログラムの一部を表すフローチヤートである。
２２……ＯＨＰ装置、２３……ＬＣＤデバイス
、２４……コンピユータ、２５……赤外線遠隔操
作用ユニツト、３０……水平・垂直同期タイミン
グ及びクロツク生成回路、３１……外部画像用フ
レームメモリ書込み回路、３２……外部画像用フ
レームメモリ読出し回路、３３……外部画像用フ
レームメモリ回路、３４……ＬＣＤ表示用タイミ
ング信号発生回路、３５……ＬＣＤ表示回路、３
６……ＬＣＤドライバ回路、３７……ＬＣＤマト
リクスセル、３８……マイクロプロセツサ、３９
……操作スイツチ回路、４０……内部画像用フレ
ームメモリ回路、４１……内部画像用フレームメ
モリ読出し回路、４２……画像データセレクト回
路、４３……データセレクト制御信号発生回路、
４４……赤外線受光回路。
FIG. 1 is a block diagram schematically showing the overall configuration of an OHP device as an embodiment of the present invention, FIG. 2 is a block diagram of a control circuit for an LCD device in a conventional projection device, and FIG. 3 is a diagram similar to that shown in FIG. FIGS. 4, 5, 6, and 7 are flowcharts showing part of the microprocessor's processing program. 22...OHP device, 23...LCD device, 24...computer, 25...infrared remote control unit, 30...horizontal/vertical synchronization timing and clock generation circuit, 31...external image frame memory writing circuit, 32... Frame memory read circuit for external images, 33... Frame memory circuit for external images, 34... Timing signal generation circuit for LCD display, 35... LCD display circuit, 3
6...LCD driver circuit, 37...LCD matrix cell, 38...Microprocessor, 39
...Operation switch circuit, 40... Frame memory circuit for internal images, 41... Frame memory read circuit for internal images, 42... Image data selection circuit, 43... Data selection control signal generation circuit,
44...Infrared light receiving circuit.
Claims (1)
示面と、該液晶表示面上の画像を投影して投影面
像を形成する光学系と、前記液晶表示面の所望の
部分に前記画像情報と異なる情報を表示する手段
とを備えたことを特徴とする投影装置。 a liquid crystal display surface that displays image information applied from the outside; an optical system that projects the image on the liquid crystal display surface to form a projection surface image; and a liquid crystal display surface that displays image information different from the image information on a desired portion of the liquid crystal display surface. A projection device comprising: means for displaying information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9457289U JPH0333486U (en) | 1989-08-11 | 1989-08-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9457289U JPH0333486U (en) | 1989-08-11 | 1989-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0333486U true JPH0333486U (en) | 1991-04-02 |
Family
ID=31643893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9457289U Pending JPH0333486U (en) | 1989-08-11 | 1989-08-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333486U (en) |
-
1989
- 1989-08-11 JP JP9457289U patent/JPH0333486U/ja active Pending
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