JPS617831A - Overhead projector - Google Patents

Overhead projector

Info

Publication number
JPS617831A
JPS617831A JP12860984A JP12860984A JPS617831A JP S617831 A JPS617831 A JP S617831A JP 12860984 A JP12860984 A JP 12860984A JP 12860984 A JP12860984 A JP 12860984A JP S617831 A JPS617831 A JP S617831A
Authority
JP
Japan
Prior art keywords
function
overhead projector
electronic blackboard
projector
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
Application number
JP12860984A
Other languages
Japanese (ja)
Inventor
Hajime Oota
肇 太田
Toshiharu Enotsuchi
榎土 俊治
Hideyuki Kotani
小谷 英之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12860984A priority Critical patent/JPS617831A/en
Publication of JPS617831A publication Critical patent/JPS617831A/en
Pending legal-status Critical Current

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  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To realize the overhead projector which has both electronic blackboard device function and projector function by providing the function which enlarges and displays image information in addition to the electronic blackboard device function. CONSTITUTION:A light source 6 is arranged under a transparent tablet 5 where an X-Y pattern for an electronic blackboard device is spread and a transparent sheet 6 which is arranged in contact with it, and a lens 10 and a mirror 11 are provided over them. Then, the position of an image character drawn with a pen 3 for coordinate detection is calculated by a controller 7 and recorded in a storage device 8, and the image information is enlarged and displayed on a screen 2. Thus, the overhead projector which has both the electronic blackboard function and the projection function is realized.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は透明シート上に書かれた画像情報を拡大表示す
る機能と、同じく透明シート上に書かれた画像情報を読
み取る機能を有するオーバーヘッドプロジェクタに関す
るものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an overhead projector that has a function of enlarging and displaying image information written on a transparent sheet and a function of reading image information written on a transparent sheet. It is related to.

〔従来の技術〕[Conventional technology]

近年座標検知装置(ディジタイザ)を利用した電子黒板
装置が開発され、此の電子黒板装置は所謂黒板上に書か
れた画像情報を電気信号に変換し、CRTディスプレイ
上に表示したり、ファクシミリの様に遠隔地に伝送して
表示したり、又補助記憶装置(例えばフロッピーディス
ク)に記録して再生したり、更に又プリンタへ出力する
ことも出来るので広く使用され始めている。
In recent years, electronic blackboard devices that use coordinate detection devices (digitizers) have been developed, and these electronic blackboard devices convert image information written on the so-called blackboard into electrical signals, which can be displayed on a CRT display or used as a facsimile. It is beginning to be widely used because it can be transmitted to a remote location for display, recorded on an auxiliary storage device (for example, a floppy disk) and played back, and output to a printer.

此の様な電子黒板装置には各種の方式が開発されつつあ
り、感圧方式、電磁結合方式等があり、例えば特願昭5
6−209780− r座標読取装置j等に詳細説明さ
れている。
Various systems are being developed for electronic whiteboard devices like this, including pressure-sensitive systems and electromagnetic coupling systems.
6-209780-r coordinate reading device j, etc.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

座標検知装置を利用した電子黒板装置は上記の様に種々
の長所があるが、多人数の会議等に利用する際には電子
黒板装置の表示内容を出席者に見せる為には、大型の電
子黒板装置を用意するか又は大型のプロジェクタを使用
して電子黒板装置の表示内容を拡大する必要があり、此
のことは設置スペースの確保や機器の価格が高くなると
云う問題があった。
Electronic whiteboard devices that use coordinate detection devices have various advantages as mentioned above, but when used in meetings with a large number of people, it is necessary to use a large electronic whiteboard device in order to show the displayed contents to the attendees. It is necessary to prepare a blackboard device or use a large projector to enlarge the display content of the electronic blackboard device, which poses problems such as securing installation space and increasing the price of the equipment.

本発明は上記の欠点を除去し構造が簡単で価格の易いオ
ーハーヘソドプロジェクタを提供することである。
SUMMARY OF THE INVENTION The object of the present invention is to provide an Oherhesodo projector which eliminates the above-mentioned drawbacks and is simple in structure and inexpensive.

〔問題点を解決するための手段〕[Means for solving problems]

問題点を解決するための手段は、オーバーヘッドプロジ
ェクタのテーブルガラス部の内側に透明電極よりなる。
A means to solve the problem consists of transparent electrodes inside the table glass part of the overhead projector.

X −Yパターンを形成し、該テーブルガラス部上に置
かれた透明シートに座標検知用ペンで書き込みを行った
時、該座標検知用ペンの座標を該X−Yパターンと協同
して検知し読み取る。a能と、該オーバーヘッドプロジ
ェクタの有する拡大表示する機能とを合わせ有するオー
バーヘッドプロジェクタにより達成される。
When an X-Y pattern is formed and a coordinate detection pen is used to write on a transparent sheet placed on the table glass part, the coordinates of the coordinate detection pen are detected in cooperation with the X-Y pattern. read. This is achieved by using an overhead projector that has both the A function and the enlarged display function of the overhead projector.

〔作用〕[Effect]

本発明に依ると従来の電子黒板装置の黒板部を透明をシ
ートとし、該シート上に画像情報を書き込み、該シート
の下部により光を投射し、該シートを透過する光をプリ
ズムと拡大レンズにより大型のスクリーン上に投影出来
るので、従来の電子黒板装置の機能にプロジェクタ機能
を付加したオーハーヘソドプロジェククを実現出来ると
云う効果がある。
According to the present invention, the blackboard section of a conventional electronic whiteboard device is made of a transparent sheet, image information is written on the sheet, light is projected from the lower part of the sheet, and the light transmitted through the sheet is reflected by a prism and a magnifying lens. Since it can be projected onto a large screen, it has the effect of realizing an over-the-top project in which a projector function is added to the function of a conventional electronic whiteboard device.

〔実施例〕〔Example〕

第1図は本発明に依るオーバーヘッドプロジェクタの一
実施例を示す概観図である。
FIG. 1 is an overview diagram showing an embodiment of an overhead projector according to the present invention.

第2図は本発明に依るオーバーヘッドプロジェクタの断
面図である。
FIG. 2 is a cross-sectional view of an overhead projector according to the present invention.

図中、1は本発明に依るオーバーヘッドプロジェクタ、
2はスクリーン、3は座標検知用ペン、4は座標検知用
消去ペン、5はガラスの内側に配置されたX−Yパター
ンを張った透明なタブレット、6は書き込み・消去可能
な透明シート、7は電子黒板装置の制御装置、8は補助
記憶装置、9は光源、10はレンズ、11はミラー、1
2は保持金具である。
In the figure, 1 is an overhead projector according to the present invention;
2 is a screen, 3 is a pen for detecting coordinates, 4 is an erasing pen for detecting coordinates, 5 is a transparent tablet with an X-Y pattern placed inside the glass, 6 is a transparent sheet that can be written on and erased, 7 1 is a control device for an electronic blackboard device, 8 is an auxiliary storage device, 9 is a light source, 10 is a lens, 11 is a mirror, 1
2 is a holding metal fitting.

以下図に従って本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.

従来の電子黒板装置の場合と同じく、電子黒板装置の制
御装置7はタブレット5内に設けられたX、Y軸の磁界
発生用コイルに対し、夫々少しづつ位相の異なる駆動信
号を送出し、タブレット5の面上に位置に伴って直線的
に位相が変化する回転磁界を発生する。
As in the case of conventional electronic whiteboard devices, the control device 7 of the electronic whiteboard device sends drive signals with slightly different phases to the X- and Y-axis magnetic field generation coils provided in the tablet 5, and A rotating magnetic field whose phase changes linearly with position is generated on the surface of 5.

此のタブレット5の面に密接して透明シート6が置かれ
る。座標検知用ペン3を使用して操作者は透明シート6
の面上に任意の画像、文字等を書くことが出来る。
A transparent sheet 6 is placed closely on the surface of this tablet 5. Using the coordinate detection pen 3, the operator reads the transparent sheet 6.
You can write any image, text, etc. on the surface.

座標検知用ペン3の先端には特殊なコイルが内蔵されて
いる。此のコイルはタブレッl□ 5から発生する回転
磁界を検出し、制御袋W7に伝える。
A special coil is built into the tip of the coordinate detection pen 3. This coil detects the rotating magnetic field generated from the tablet l□5 and transmits it to the control bag W7.

制御装置7は座標検知用ペン3から送出された検出信号
と前述したタブレット5に対し送出した駆動信号を対比
して座標検知用ペン3のタブレット5の面上に於ける位
置を算出する。此の位置情報は例えば補助記憶装置8に
記録される。
The control device 7 calculates the position of the coordinate detection pen 3 on the surface of the tablet 5 by comparing the detection signal sent from the coordinate detection pen 3 with the drive signal sent to the tablet 5 described above. This position information is recorded in the auxiliary storage device 8, for example.

以上は従来の電子黒板の動作の概要を簡単に説明したも
つであるが、本発明では以下の機能を付加する。
The above is a brief explanation of the operation of the conventional electronic whiteboard, but the present invention adds the following functions.

即ち、本発明に依るとオーバーヘッドプロジェクタ1の
内部に光源9が設けられ、光源9から出た光は透明シー
ト6に投射される。投射された光はレンズ10で収束さ
れてミラー11で反射され、拡大されてスクリーン2上
に投射される。尚保持金具12はレンズ10、及びミラ
ー11を保持している。
That is, according to the present invention, a light source 9 is provided inside the overhead projector 1, and light emitted from the light source 9 is projected onto the transparent sheet 6. The projected light is converged by a lens 10, reflected by a mirror 11, expanded, and projected onto a screen 2. Note that the holding fitting 12 holds the lens 10 and the mirror 11.

此の結果、透明シート6上に座標検知用筆記具3で書か
れた画像情報は拡大されてスクリーン2上に写出される
。尚図中、点線は光の通路を示している。
As a result, the image information written on the transparent sheet 6 with the coordinate detection writing instrument 3 is enlarged and projected onto the screen 2. In the figure, dotted lines indicate light paths.

向上記説明に於いては回転磁界を使用する電磁結合方式
の電子黒板装置′に就いて本発明を説明したが、上記説
明から明らかな様に本発明は特定の方式の電子黒板装置
に限定されるものではない。
In the above description, the present invention has been described with respect to an electromagnetic coupling type electronic whiteboard device that uses a rotating magnetic field, but as is clear from the above description, the present invention is limited to a specific type of electronic whiteboard device. It's not something you can do.

〔発明の効果〕〔Effect of the invention〕

以上詳細に説明した様に本発明によれば、透明シート上
に書かれた画像情報をディジクイズして補助記憶装置等
に記録する所謂電子黒板装置の機能を持つだけでなく、
透明シート上に書かれた画像情報が拡大されてスクリー
ン上に写出されるオーバーヘッドプロジェクタを実現出
来ると云う大きい効果がある。
As explained in detail above, the present invention not only has the function of a so-called electronic blackboard device that digitally quizzes image information written on a transparent sheet and records it in an auxiliary storage device, etc.
This has the great effect of realizing an overhead projector in which image information written on a transparent sheet is enlarged and projected onto a screen.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に依るオーハーハソトープロジエクタの
一実施例を示す概観図である。 第2図は本発明に依るオーハーヘソドブロジエクタの断
面図である。 図中、1は本発明に依るオーハーヘソドプロジェクタ、
2はスクリーン、3は座標検知用ペン、4は座標検知用
消去ペン、5はガラスの内側に配置されたX−Yパター
ンを張った透明なタブレット、6ば書き込み・消去可能
な透明シート、7は電子黒板装置の制御装置、8は補助
記憶装置、9は光源、10はレンズ、11はミラー、I
2は保持金只である。 蓼2図
FIG. 1 is an overview diagram showing an embodiment of an Ohaha Soto projector according to the present invention. FIG. 2 is a cross-sectional view of the Oherhesodobrodiector according to the present invention. In the figure, 1 is an Oherhesodo projector according to the present invention;
2 is a screen, 3 is a pen for detecting coordinates, 4 is an erasing pen for detecting coordinates, 5 is a transparent tablet with an X-Y pattern placed inside the glass, 6 is a transparent sheet that can be written on and erased, 7 8 is an auxiliary storage device, 9 is a light source, 10 is a lens, 11 is a mirror, I
2 is just the holding money. Pagoda 2

Claims (1)

【特許請求の範囲】[Claims] オーバーヘッドプロジェクタのテーブルガラス部の内側
に透明電極よりなるX−Yパターンを形成し、該テーブ
ルガラス部上に置かれた透明シートに座標検知用ペンで
書き込みを行った時、該座標検知用ペンの座標を該X−
Yパターンと協同して検知し読み取る機能と、該オーバ
ーヘッドプロジェクタの有する拡大表示する機能とを合
わせ有することを特徴とするオーバーヘッドプロジェク
タ。
An X-Y pattern made of transparent electrodes is formed on the inside of the table glass part of the overhead projector, and when a coordinate detection pen is used to write on a transparent sheet placed on the table glass part, the coordinate detection pen The coordinates are
An overhead projector characterized by having both a function of detecting and reading in cooperation with a Y pattern and a function of enlarging display that the overhead projector has.
JP12860984A 1984-06-22 1984-06-22 Overhead projector Pending JPS617831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12860984A JPS617831A (en) 1984-06-22 1984-06-22 Overhead projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12860984A JPS617831A (en) 1984-06-22 1984-06-22 Overhead projector

Publications (1)

Publication Number Publication Date
JPS617831A true JPS617831A (en) 1986-01-14

Family

ID=14989014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12860984A Pending JPS617831A (en) 1984-06-22 1984-06-22 Overhead projector

Country Status (1)

Country Link
JP (1) JPS617831A (en)

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