JPH0212892U - - Google Patents

Info

Publication number
JPH0212892U
JPH0212892U JP1988090831U JP9083188U JPH0212892U JP H0212892 U JPH0212892 U JP H0212892U JP 1988090831 U JP1988090831 U JP 1988090831U JP 9083188 U JP9083188 U JP 9083188U JP H0212892 U JPH0212892 U JP H0212892U
Authority
JP
Japan
Prior art keywords
tablet
liquid crystal
crystal display
information
position 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.)
Granted
Application number
JP1988090831U
Other languages
Japanese (ja)
Other versions
JPH0737911Y2 (en
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 filed Critical
Priority to JP1988090831U priority Critical patent/JPH0737911Y2/en
Publication of JPH0212892U publication Critical patent/JPH0212892U/ja
Application granted granted Critical
Publication of JPH0737911Y2 publication Critical patent/JPH0737911Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Position Input By Displaying (AREA)

Description

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

第１図はこの考案の一実施例を概略的に示す一
部切断正面図、第２図は凹面鏡の詳細とともに光
学系路を示す図、第３図はタブレツト部の一部を
示す断面図、第４図はタブレツトと液晶デイスプ
レイの駆動回路を示すブロツク線図である。 図面において、１は投影手段、５は光源、６，
７は反射鏡、８は凸レンズ、１１は液晶デイスプ
レイ、１２は凹面鏡、２１は電子黒板装置、２２
はスクリーン、２３はタブレツト部、３１は入力
ペン、３３はイレーサ、４１はタブレツト制御回
路、５１は制御回路、６１は処理装置、７１はモ
デムである。 FIG. 1 is a partially cutaway front view schematically showing an embodiment of this invention, FIG. 2 is a diagram showing details of the concave mirror and the optical system path, and FIG. 3 is a sectional view showing a part of the tablet section. FIG. 4 is a block diagram showing a drive circuit for a tablet and a liquid crystal display. In the drawings, 1 is a projection means, 5 is a light source, 6,
7 is a reflecting mirror, 8 is a convex lens, 11 is a liquid crystal display, 12 is a concave mirror, 21 is an electronic whiteboard device, 22
23 is a screen, 23 is a tablet unit, 31 is an input pen, 33 is an eraser, 41 is a tablet control circuit, 51 is a control circuit, 61 is a processing device, and 71 is a modem.

Claims (1)

【実用新案登録請求の範囲】 (1) スクリーン部材と、このスクリーン部材の
裏面に位置し前記スクリーン部材を介して書き込
まれた文字や図形の情報を座標位置情報として検
出するタブレツトと、このタブレツトにその情報
に対応する座標位置情報を入力する入力手段と、
前記タブレツトの前記座標位置にそれぞれ対応す
る位置を表示可能な液晶表示手段と、前記タブレ
ツトを駆動し、前記入力手段と前記消去手段の座
標位置を識別して前記液晶表示手段の動作を制御
する制御手段と、前記入力手段により入力された
前記情報をプリントするプリンタ、および前記液
晶表示手段上に表示された像を前記スクリーン上
に拡大して投影する投影手段とを有することを特
徴とする投影デイスプレイ付電子黒板装置。 (2) 前記制御手段には電話回線を介して前記座
標位置情報を送受信するモデムが接続されている
ことを特徴する請求項１に記載の投影デイスプレ
イ付電子黒板装置。[Claims for Utility Model Registration] (1) A screen member, a tablet located on the back side of the screen member that detects information on characters and figures written through the screen member as coordinate position information, and the tablet. an input means for inputting coordinate position information corresponding to the information;
a liquid crystal display means capable of displaying positions corresponding to the coordinate positions of the tablet, and a control for driving the tablet, identifying the coordinate positions of the input means and the erasing means, and controlling the operation of the liquid crystal display means. A projection display comprising: a printer for printing the information inputted by the input means; and a projection means for enlarging and projecting an image displayed on the liquid crystal display means onto the screen. Equipped with an electronic whiteboard device. (2) The electronic blackboard device with a projection display according to claim 1, wherein a modem for transmitting and receiving the coordinate position information is connected to the control means via a telephone line.
JP1988090831U 1988-07-08 1988-07-08 Electronic blackboard device with projection display Expired - Lifetime JPH0737911Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988090831U JPH0737911Y2 (en) 1988-07-08 1988-07-08 Electronic blackboard device with projection display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988090831U JPH0737911Y2 (en) 1988-07-08 1988-07-08 Electronic blackboard device with projection display

Publications (2)

Publication Number Publication Date
JPH0212892U true JPH0212892U (en) 1990-01-26
JPH0737911Y2 JPH0737911Y2 (en) 1995-08-30

Family

ID=31315342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988090831U Expired - Lifetime JPH0737911Y2 (en) 1988-07-08 1988-07-08 Electronic blackboard device with projection display

Country Status (1)

Country Link
JP (1) JPH0737911Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355188A (en) * 1999-06-17 2000-12-26 Matsushita Electric Ind Co Ltd Interactive electronic blackboard

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200466688Y1 (en) * 2012-08-27 2013-05-02 방재홍 Combined writing board screen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211095A (en) * 1985-03-15 1986-09-19 日本電気株式会社 Electronic blackboard device
JPS62187795U (en) * 1986-05-20 1987-11-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211095A (en) * 1985-03-15 1986-09-19 日本電気株式会社 Electronic blackboard device
JPS62187795U (en) * 1986-05-20 1987-11-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355188A (en) * 1999-06-17 2000-12-26 Matsushita Electric Ind Co Ltd Interactive electronic blackboard

Also Published As

Publication number Publication date
JPH0737911Y2 (en) 1995-08-30

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