【０００１】[0001]
【産業上の利用分野】本発明は、コンピュータ等の入力
装置であり、特に図形等の描画をコンピュータに入力す
るデジタイザ，タブレットやペン入力装置等の位置検出
入力装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device such as a computer, and more particularly to a position detecting input device such as a digitizer, a tablet or a pen input device for inputting a drawing such as a figure into a computer.
【０００２】[0002]
【従来の技術】近年、コンピュータ等の情報機器の高速
度，高性能化、及び、表示装置の高解像度化，大型化と
ともに、画像の高解像度化，カラー化が進み、図形入
力，編集を行うことが容易になり、図形等の入力装置の
開発が盛んに行われている。簡易型で、省スペースでの
操作が可能なマウス等が図形入力装置として現在最も利
用されているが、座標入力の微調整が難しく、また、図
面等の原紙からデータをなぞってコンピュータ等に入力
することができず、デジタイザやタブレット等が必要と
されている。一般に、タブレット等は座標位置を入力、
検出するためにある程度の占有面積（例えば、２５×３
５ｃｍ2）を有するタブレット盤が用いられている。2. Description of the Related Art In recent years, along with high speed and high performance of information equipment such as computers, and high resolution and large size of display devices, high resolution and colorization of images have advanced, and graphic input and editing are performed. It has become easier and input devices for figures and the like have been actively developed. A simple type and mouse that can be operated in a small space is currently most used as a figure input device, but it is difficult to finely adjust the coordinate input, and trace data from the base paper such as drawings and input it to a computer etc. It is not possible, and digitizers and tablets are needed. Generally, for tablets, etc., enter the coordinate position,
Occupied area to some extent to detect (eg 25x3
A tablet board with 5 cm2 ) is used.
【０００３】以下に従来の位置検出入力装置について説
明する。図４は、従来の位置検出入力装置の１つである
タブレット装置の構成を示す要部斜視図である。２１は
タブレット盤、２２はタブレット盤２１の内部に設けら
れた所定の間隔をおいて配列されたＸ方向電極、２３は
Ｘ方向電極２２の上部にある空間を設けてマトリックス
状に交差するように配列されたＹ方向電極である。又、
２４はタブレット盤２１の平面状を軽く当てて移動させ
るペンである。A conventional position detection input device will be described below. FIG. 4 is a perspective view of a main part showing a configuration of a tablet device which is one of conventional position detection input devices. Reference numeral 21 is a tablet board, 22 is an X-direction electrode arranged inside the tablet board 21 at predetermined intervals, and 23 is a space above the X-direction electrode 22 so as to intersect in a matrix. It is an array of Y-direction electrodes. or,
Reference numeral 24 denotes a pen for lightly touching the flat surface of the tablet board 21 to move it.
【０００４】以上のように構成された位置検出入力装置
について、以下その動作について説明する。タブレット
盤２１を構成する位置検出盤が複数の細い電極であるＸ
方向電極２２、Ｙ方向電極２３が一定の間隔で配置さ
れ、その複数の電極に一定の時間間隔で、それらの配列
の順番に一定の電圧が供給されて、電圧供給がＸ方向、
Ｙ方向に走査される。ペン２４をタブレット盤２１の上
で軽く当てると、当てた所のＸ方向電極２２の少なくと
も一つの電極とＹ方向電極２３の少なくとも一つの電極
が接触し、その電極のＸ，Ｙ方向の各電極の位置によ
り、平面状の座標位置を算出できる。この座標位置がコ
ンピュータに送信され、動作しているＣＡＤ，ＣＡＭ等
のソフトウェアにより処理され、図形等が画面に表示さ
れる。タブレット盤２１の各電極の配列密度により入力
精度、操作性が決定されるとともに、入力する図面等の
大きさにより使用するタブレット盤２１等の大きさ（占
有面積）が決定される。The operation of the position detection input device configured as described above will be described below. The position detection board forming the tablet board 21 is a plurality of thin electrodes X
The direction electrodes 22 and the Y direction electrodes 23 are arranged at a constant interval, and a constant voltage is supplied to the plurality of electrodes at a constant time interval in the order of their arrangement, so that the voltage supply is in the X direction,
It is scanned in the Y direction. When the pen 24 is lightly touched on the tablet board 21, at least one electrode of the X-direction electrode 22 and at least one electrode of the Y-direction electrode 23 in contact with the pen 24 come into contact with each other, and the electrodes in the X and Y directions are respectively contacted. The planar coordinate position can be calculated from the position of. This coordinate position is transmitted to the computer, processed by operating software such as CAD, CAM, etc., and a figure or the like is displayed on the screen. The input density and operability are determined by the array density of each electrode of the tablet board 21, and the size (occupied area) of the tablet board 21 or the like to be used is determined by the size of the drawing or the like to be input.
【０００５】また、磁気又は光電方式等を用いるタブレ
ット盤があるが、装置は概して大きく同様に作業台等に
大きな設置スペースを要する。Further, there is a tablet board using a magnetic or photoelectric method, but the apparatus is generally large and similarly requires a large installation space on a workbench or the like.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、コンピュータの表示装置、キーボード等に
近接して、操作性よくタブレット盤２１を置く必要があ
り、作業台にかなりの占有面積を要するという問題点を
有していた。特に、タブレット盤２１を使用していない
ときに、余分な空間を必要とする問題点を有していた。
また、タブレット盤２１等は手で操作されるため、マト
リックス状の導線電極の配列精度により、手で操作でき
る解像度が決定され、微調整に熟練を要し、高解像度を
要求するにしたがい、装置が非常に高価になるという問
題点を有していた。また、原稿図面等を入力する場合、
原稿図面等をタブレット盤２１のサイズに調整する必要
があり、解像度等に問題点を有していた。However, in the above-mentioned conventional configuration, it is necessary to place the tablet board 21 close to the display device, keyboard, etc. of the computer with good operability, and it requires a considerable occupation area on the workbench. I had a problem. In particular, there is a problem that an extra space is required when the tablet board 21 is not used.
Further, since the tablet board 21 and the like are operated by hand, the resolution that can be operated by hand is determined by the arrangement accuracy of the matrix-shaped conductive wire electrodes, and skill is required for fine adjustment, so that high resolution is required. Has a problem that it becomes very expensive. Also, when inputting manuscript drawings etc.,
It is necessary to adjust the original drawing and the like to the size of the tablet board 21, and there is a problem in resolution and the like.
【０００７】本発明は上記従来の問題点を解決するもの
で、小型軽量の位置検出装置及び赤外線内蔵の入力装置
により、作業台にタブレット盤等を置くスペースを無く
し、表示装置に容易に描画が可能で、作業性の良い精度
の高い位置検出に優れた位置検出入力装置を提供するこ
とを目的とする。The present invention solves the above-mentioned problems of the prior art. With a compact and lightweight position detecting device and an input device with built-in infrared rays, there is no space for placing a tablet board or the like on the workbench, and it is easy to draw on the display device. It is an object of the present invention to provide a position detection input device that is capable of performing workability and is excellent in highly accurate position detection.
【０００８】[0008]
【課題を解決するための手段】この目的を達成するため
に本発明の請求項１に記載の位置検出入力装置は、所定
の間隔で配置された２つの赤外線ＣＣＤカメラを有する
赤外線位置検出部と、座標位置の指標となる赤外線ＬＥ
Ｄを有する座標入力部と、赤外線位置検出部にリセット
信号を入力するリセット信号回路と、赤外線位置検出部
に水平クロック信号を入力する水平クロック回路と、赤
外線位置検出部に垂直クロック信号を入力する垂直クロ
ック回路と、各赤外線ＣＣＤカメラから出力される映像
信号から赤外線ＬＥＤのピーク位置を検出しピーク検出
信号を生成する映像信号ピーク検出回路と、ピーク検出
信号等から赤外線ＬＥＤの座標位置を計算する演算回路
と、座標位置等をコンピュータ等に送信するためのイン
ターフェース回路と、を備えた構成を有している。In order to achieve this object, a position detection input device according to claim 1 of the present invention comprises an infrared position detection section having two infrared CCD cameras arranged at a predetermined interval. , Infrared LE as an index of coordinate position
A coordinate input unit having D, a reset signal circuit for inputting a reset signal to the infrared position detection unit, a horizontal clock circuit for inputting a horizontal clock signal to the infrared position detection unit, and a vertical clock signal for the infrared position detection unit. A vertical clock circuit, a video signal peak detection circuit that detects a peak position of an infrared LED from a video signal output from each infrared CCD camera and generates a peak detection signal, and a coordinate position of the infrared LED is calculated from the peak detection signal and the like. It has a configuration including an arithmetic circuit and an interface circuit for transmitting a coordinate position and the like to a computer or the like.
【０００９】本発明の請求項２に記載の位置検出入力装
置は、請求項１において、赤外線位置検出部が赤外線Ｃ
ＣＤカメラへのレンズ倍率を可変にできるレンズ調整回
路部を備えた構成を有している。A position detection input device according to a second aspect of the present invention is the position detection input device according to the first aspect, wherein the infrared position detection section is an infrared ray C.
It has a configuration including a lens adjustment circuit unit capable of changing the lens magnification to a CD camera.
【００１０】本発明の請求項３に記載の位置検出入力装
置は、請求項１又は２において、座標位置を表示素子等
に顕示する表示回路、又は、座標位置が赤外線位置検出
部の２つの赤外線ＣＣＤカメラの少なくともいずれか１
つが撮影範囲を外れたとき警告音を発生する音声回路部
を備えた構成を有している。According to a third aspect of the present invention, there is provided a position detection input device according to the first or second aspect, wherein a display circuit for displaying a coordinate position on a display element or the like, or two infrared rays whose coordinate position is an infrared position detecting section. At least one of CCD cameras
It has a configuration including an audio circuit unit that generates a warning sound when one is out of the shooting range.
【００１１】ここで、赤外線ＬＥＤを有する座標入力部
としては、形状がペン型であり、ペンの両端部又はその
周辺に赤外線ＬＥＤ等を取り付けたものが用いられる。
又、インターフェース回路とコンピュータ等の信号の送
受信は、接続ケーブル又は光信号により無線で送信する
ことも可能である。特に、無線でデータを送信すること
により、ケーブル等の配線が省略でき、自由に位置検出
入力装置を配置することができる。Here, as the coordinate input section having an infrared LED, a pen type shape is used, and an infrared LED or the like is attached to both ends of the pen or its periphery.
Further, the transmission / reception of signals between the interface circuit and the computer or the like can be performed wirelessly by a connection cable or an optical signal. In particular, by transmitting data wirelessly, wiring such as a cable can be omitted, and the position detection input device can be freely arranged.
【００１２】[0012]
【作用】この構成によって、本発明の位置検出入力装置
は、作業台等の上で赤外線ＬＥＤを用いたペン等の座標
入力部を用いて図形等を描画すると、上部に設置した２
つの赤外線ＣＣＤカメラを用いた赤外線位置検出部によ
り、それぞれの赤外線ＣＣＤカメラが赤外線ＬＥＤの位
置に強いピークを検出し、それぞれの赤外線ＣＣＤカメ
ラの映像信号ピーク検出回路からのピーク検出信号によ
り、その時の水平クロック数及び垂直クロック数を読み
取り、演算回路により座標位置データに変換することが
できる。これをインターフェース回路により、コンピュ
ータ等に座標位置データを送信し、図形等を表示画面に
表示することができる。With this configuration, the position detection input device of the present invention is installed on the workbench or the like when a graphic or the like is drawn using a coordinate input unit such as a pen using an infrared LED.
Each infrared CCD camera detects a strong peak at the position of the infrared LED by the infrared position detection unit using two infrared CCD cameras, and the peak detection signal from the video signal peak detection circuit of each infrared CCD camera causes The number of horizontal clocks and the number of vertical clocks can be read and converted into coordinate position data by an arithmetic circuit. The interface circuit can transmit the coordinate position data to a computer or the like to display a figure or the like on the display screen.
【００１３】また、赤外線位置検出部が赤外線ＣＣＤカ
メラへのレンズ倍率を可変にできるレンズ調整回路部を
備えたことにより、入力する原稿等のサイズに合わせて
赤外線ＬＥＤ等が検出する撮影範囲を設定できるので、
原稿からの図形等が容易に入力できる。Further, since the infrared position detecting section is provided with a lens adjusting circuit section capable of changing the lens magnification to the infrared CCD camera, the photographing range detected by the infrared LED or the like is set in accordance with the size of the input document or the like. Because you can
You can easily input figures from the manuscript.
【００１４】また、位置検出入力装置に座標位置を表示
素子等に顕示する表示回路を備えることにより、特に、
撮影範囲外にペンがきたとき、視覚的に知ることがで
き、操作性を向上することができる。又、位置検出入力
装置に座標位置が２つの赤外線ＣＣＤカメラが撮影範囲
の少なくともいずれか１つから外れたとき警告音を発生
する音声回路部を備えたことにより、作業性，操作性を
向上することができる。Further, by providing the position detection input device with a display circuit for displaying the coordinate position on a display element or the like, in particular,
When the pen comes out of the shooting range, it can be visually recognized and the operability can be improved. In addition, the position detection input device is provided with a voice circuit unit that generates a warning sound when the infrared CCD cameras having two coordinate positions deviate from at least one of the photographing ranges, thereby improving workability and operability. be able to.
【００１５】[0015]
【実施例】以下本発明の一実施例における位置検出入力
装置について、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A position detection input device according to an embodiment of the present invention will be described below with reference to the drawings.
【００１６】図１は本発明の一実施例における位置検出
入力装置の構成を示すブロック図である。１は赤外線位
置検出部、２ａ，２ｂは赤外線位置検出部１内に配列さ
れた２つの赤外線ＣＣＤカメラであり、水平方向に距離
Ｌの間隔をあけて配列されている。３は赤外線ＬＥＤ、
４は赤外線ＬＥＤ３からの赤外線を上方に向けて放射す
るようにその先端に赤外線ＬＥＤ３を配置したペン型の
座標入力部である。５はコントロール部、６はコントロ
ール部５において生成され赤外線位置検出部１の赤外線
ＣＣＤカメラ２ａ，２ｂに入力されるリセット信号、７
はコントロール部５において生成され赤外線ＣＣＤカメ
ラ２ａ，２ｂに入力され垂直走査のための垂直クロック
信号、８はコントロール部５において生成され赤外線Ｃ
ＣＤ２ａ，２ｂに入力される水平走査のための水平クロ
ック信号で、赤外線ＣＣＤカメラ２ａ，２ｂはリセット
信号６、垂直クロック信号７、水平クロック信号８の入
力に応じてＸ−Ｙ方向の走査を開始する。９ａ，９ｂは
赤外線ＣＣＤカメラ２ａ，２ｂより出力される映像信号
である。１０はリセット信号６を発生するリセット信号
回路、１１は垂直クロック信号７を発生する垂直クロッ
ク回路、１２は水平クロック信号７を発生する水平クロ
ック回路である。１３ａ，１３ｂは映像信号９ａ，９ｂ
をもとに波形のピークを検出し水平クロック信号８の周
期にあわせてピーク信号を発生するピーク検出回路であ
る。又、１４ａ，１４ｂは、ピーク検出回路１３ａ，１
３ｂから得られたピーク検出信号である。１５は座標位
置を算出する演算回路である。１６は演算回路１５によ
り算出された座標位置をコンピュータ（図示せず）に送
信するインターフェース回路である。また、１７は演算
回路１５により算出された座標位置を表示する表示回路
である。また、図示していないが、赤外線位置検出部１
の撮影範囲以外にペン型の座標入力部４が位置すると、
警告音等を発生する音声回路部を備えることにより、操
作性を向上させることができる。また、赤外線ＣＣＤカ
メラ２ａ，２ｂにレンズ倍率調整回路部又は焦点距離調
整回路部を設けることにより、原稿サイズの大きさ、入
力精度の要求又は作業スペースに応じて解像度、検出範
囲を設定でき、操作性を向上させることができる。FIG. 1 is a block diagram showing the configuration of a position detection input device according to an embodiment of the present invention. Reference numeral 1 denotes an infrared position detector, 2a and 2b denote two infrared CCD cameras arranged in the infrared position detector 1, which are arranged at a distance L in the horizontal direction. 3 is an infrared LED,
Reference numeral 4 denotes a pen-shaped coordinate input unit in which the infrared LED 3 is arranged at the tip thereof so that infrared light from the infrared LED 3 is emitted upward. Reference numeral 5 is a control unit, 6 is a reset signal generated in the control unit 5 and input to the infrared CCD cameras 2a and 2b of the infrared position detection unit 1, 7
Is a vertical clock signal generated in the control unit 5 and inputted to the infrared CCD cameras 2a and 2b, and 8 is an infrared ray C generated in the control unit 5.
With the horizontal clock signal for horizontal scanning input to the CDs 2a, 2b, the infrared CCD cameras 2a, 2b start scanning in the XY directions in response to the input of the reset signal 6, the vertical clock signal 7, and the horizontal clock signal 8. To do. Reference numerals 9a and 9b are video signals output from the infrared CCD cameras 2a and 2b. Reference numeral 10 is a reset signal circuit for generating the reset signal 6, 11 is a vertical clock circuit for generating the vertical clock signal 7, and 12 is a horizontal clock circuit for generating the horizontal clock signal 7. 13a and 13b are video signals 9a and 9b
Is a peak detection circuit that detects the peak of the waveform based on the above and generates a peak signal in synchronization with the cycle of the horizontal clock signal 8. Further, 14a and 14b are peak detection circuits 13a and 1b.
It is a peak detection signal obtained from 3b. Reference numeral 15 is an arithmetic circuit for calculating the coordinate position. Reference numeral 16 is an interface circuit for transmitting the coordinate position calculated by the arithmetic circuit 15 to a computer (not shown). A display circuit 17 displays the coordinate position calculated by the arithmetic circuit 15. Although not shown, the infrared position detector 1
If the pen-shaped coordinate input unit 4 is located outside the shooting range of
The operability can be improved by including the voice circuit unit that generates a warning sound or the like. Further, by providing the infrared CCD cameras 2a and 2b with a lens magnification adjusting circuit section or a focal length adjusting circuit section, the resolution and the detection range can be set according to the size of the original document, the input accuracy requirement or the working space. It is possible to improve the sex.
【００１７】尚、本実施例ではコントロール部５を赤外
線位置検出部１と別体に構成したが、前述の各回路を小
型化することにより、コントロール部５を赤外線位置検
出部１に一体化することも可能である。In this embodiment, the control unit 5 is formed separately from the infrared position detecting unit 1. However, the control unit 5 is integrated with the infrared position detecting unit 1 by downsizing the circuits described above. It is also possible.
【００１８】以上のように構成された位置検出入力装置
について、図２を用いてその動作を説明する。図２は本
発明の一実施例の位置検出入力装置の信号波形を示すタ
イミングチャートである。まず、リセット信号６、垂直
クロック信号７、水平クロック信号８が同時に２つの赤
外線ＣＣＤカメラ２ａ，２ｂに入力される。これらの入
力信号により、赤外線位置検出部１は、２つの赤外線Ｃ
ＣＤカメラ２ａ，２ｂからの映像信号９ａ，９ｂをコン
トロール部５に入力する。通常の赤外線ＣＣＤカメラ２
ａ，２ｂでこのペン型の座標入力部４を撮影するとペン
自体が撮影されるが、露出を絞った赤外線ＣＣＤカメラ
２ａ，２ｂで撮影すると、赤外線ＬＥＤ３の発光部のみ
が撮影され、他の物は撮影されず黒色となる。従って、
それぞれの赤外線ＣＣＤカメラ２ａ，２ｂの映像信号９
ａ，９ｂには赤外線ＬＥＤ３の位置に相当するところ
に、強いピーク信号１８ａ，１８ｂが現れる。そこで、
それぞれのピーク信号１８ａ，１８ｂはピーク検出回路
１３ａ，１３ｂで検出され、ピーク検出信号１４ａ，１
４ｂとして演算回路１５に送信される。また、演算回路
１５では、コントロール部５のＲＯＭ（図示せず）にあ
らかじめ計算された変換テーブル（図示せず）により、
赤外線ＣＣＤカメラ２ａ，２ｂにピーク信号１８ａ，１
８ｂが現れたところが赤外線ＣＣＤカメラ２ａ，２ｂの
基準となる原点から何度の角度の位置にあるかが判るの
で、その２つの角度情報と２つの赤外線ＣＣＤカメラ２
ａ，２ｂの距離Ｌによりペン型の座標入力部４の座標位
置を計算することができる。この得られた座標位置をイ
ンターフェース回路１６を介してコンピュータ等にデー
タを送信し、表示画面（図示せず）等に表示される。The operation of the position detection input device configured as described above will be described with reference to FIG. FIG. 2 is a timing chart showing signal waveforms of the position detection input device according to the embodiment of the present invention. First, the reset signal 6, the vertical clock signal 7, and the horizontal clock signal 8 are simultaneously input to the two infrared CCD cameras 2a and 2b. The infrared position detector 1 receives two infrared rays C by these input signals.
Video signals 9a and 9b from the CD cameras 2a and 2b are input to the control unit 5. Normal infrared CCD camera 2
When the pen-shaped coordinate input unit 4 is photographed with a and 2b, the pen itself is photographed, but when the infrared CCD cameras 2a and 2b with narrowed exposure are photographed, only the light emitting portion of the infrared LED 3 is photographed and other objects are photographed. Will not be photographed and will be black. Therefore,
Video signal 9 of each infrared CCD camera 2a, 2b
Strong peak signals 18a and 18b appear at positions a and 9b corresponding to the position of the infrared LED 3. Therefore,
The respective peak signals 18a and 18b are detected by the peak detection circuits 13a and 13b, and the peak detection signals 14a and 1b are detected.
4b is transmitted to the arithmetic circuit 15. Further, in the arithmetic circuit 15, a conversion table (not shown) calculated in advance in a ROM (not shown) of the control unit 5
Peak signals 18a, 1 are transmitted to the infrared CCD cameras 2a, 2b.
Since it is possible to know how many angles the position where 8b appears is from the reference origin of the infrared CCD cameras 2a and 2b, the two angle information and the two infrared CCD cameras 2 are shown.
The coordinate position of the pen-shaped coordinate input unit 4 can be calculated from the distance L between a and 2b. The obtained coordinate position is transmitted to a computer or the like via the interface circuit 16 and displayed on a display screen (not shown) or the like.
【００１９】以上のように動作する位置検出入力装置に
ついて、図３を用いて座標位置の算出方法を説明する。
２つの赤外線ＣＣＤカメラ２ａ，２ｂにより、赤外線Ｌ
ＥＤ３を備えたペン型の座標入力部４の位置を示すピー
ク検出信号１４ａ，１４ｂが検出され、リセット信号６
からの垂直クロック信号７の位置と、水平クロック信号
８の位置により赤外線ＣＣＤカメラ２ａ，２ｂにおける
２次元座標（ｘ１，ｙ１），（ｘ２，ｙ２）が求められ
る。ここで、各座標の原点は適宜決定されるが、ここで
は各赤外線ＣＣＤカメラ２ａ，２ｂの撮影範囲の左下隅
を原点にとる。これから、赤外線ＣＣＤカメラ２ａ、２
ｂにおける赤外線ＬＥＤ３の原点からの角度α，βは以
下の（数１）より求められる。With respect to the position detection input device which operates as described above, a method of calculating coordinate positions will be described with reference to FIG.
Infrared light L is generated by two infrared CCD cameras 2a and 2b.
The peak detection signals 14a and 14b indicating the position of the pen-shaped coordinate input unit 4 including the ED 3 are detected, and the reset signal 6 is detected.
The two-dimensional coordinates (x1, y1) and (x2, y2) in the infrared CCD cameras 2a and 2b are obtained from the position of the vertical clock signal 7 and the position of the horizontal clock signal 8. Here, the origin of each coordinate is appropriately determined, but here, the lower left corner of the photographing range of each infrared CCD camera 2a, 2b is taken as the origin. From now on, the infrared CCD cameras 2a, 2
The angles α and β from the origin of the infrared LED 3 in b are obtained by the following (Equation 1).
【００２０】[0020]
【数１】[Equation 1]
【００２１】この（数１）から２つの赤外線ＣＣＤカメ
ラ２ａ，２ｂからの赤外線ＬＥＤ３のペンの角度α、β
が算出できる。ここで、１つの赤外線ＣＣＤカメラ２ａ
の位置を原点にとり、２つの赤外線ＣＣＤカメラ２ａ，
２ｂの距離をＬとすると、図３に示すように、直線
（ａ），（ｂ）の式は（数２）で表される。From this (Equation 1), the pen angles α and β of the infrared LED 3 from the two infrared CCD cameras 2a and 2b.
Can be calculated. Here, one infrared CCD camera 2a
With the position of as the origin, the two infrared CCD cameras 2a,
Assuming that the distance of 2b is L, the equations of the straight lines (a) and (b) are represented by (Equation 2) as shown in FIG.
【００２２】[0022]
【数２】[Equation 2]
【００２３】この（数２）の２つの連立一次方程式を解
くことにより赤外線ＬＥＤ３のペン型の座標入力部４の
座標位置を算出できる。ここで、演算回路１５の演算速
度を上げるために、角度α、βによる座標位置の算出の
ための変換テーブルを設けることにより、即座に座標位
置を求めることができ、スムーズな図形等の入力ができ
る。The coordinate position of the pen-shaped coordinate input unit 4 of the infrared LED 3 can be calculated by solving the two simultaneous linear equations of (Equation 2). Here, in order to increase the calculation speed of the calculation circuit 15, by providing a conversion table for calculating the coordinate position by the angles α and β, the coordinate position can be immediately obtained, and a smooth figure or the like can be input. it can.
【００２４】以上のように本実施例によれば、タブレッ
ト盤等を作業台等におく必要がなく、作業台のある空間
を利用して図形等の入力において正確に座標位置を検出
することができるので、作業台等の有効活用ができる。
また、原稿等が束ねてあっても、その上で図形等の位置
入力作業を行うことができる。又、原稿に図面等が記載
されていた場合、レンズ倍率調整回路部等により原稿の
サイズに合わせて撮影範囲を可変設定でき、解像度の設
定ができるので、操作性、利便性を向上させることがで
きる。As described above, according to the present embodiment, it is not necessary to place a tablet board or the like on the workbench, and the space where the workbench is used can be used to accurately detect the coordinate position in inputting a figure or the like. As a result, the workbench can be effectively used.
Further, even if the originals and the like are bundled, the position input operation of the figures and the like can be performed on the originals. In addition, when a drawing or the like is written on the manuscript, the photographing range can be variably set according to the size of the manuscript by the lens magnification adjusting circuit unit and the resolution can be set, so that operability and convenience are improved. it can.
【００２５】[0025]
【発明の効果】以上のように本発明は、２つの赤外線Ｃ
ＣＤカメラを組み込んだ赤外線位置検出部と赤外線ＬＥ
Ｄを内蔵したペン等の座標入力部により、コンピュータ
が設置してある上部の適当な位置に設定した小型の位置
検出装置の撮影範囲内で容易に座標入力ができ、作業ス
ペースの有効活用及び作業性に優れた位置検出入力装置
を実現することができる。As described above, the present invention has two infrared rays C
Infrared position detector with built-in CD camera and infrared LE
With a coordinate input unit such as a pen with a built-in D, coordinates can be easily input within the shooting range of a small position detection device set at an appropriate position on the upper part of the computer, and effective use of work space and work It is possible to realize a position detection input device having excellent properties.
【００２６】さらに、赤外線ＣＣＤカメラにレンズ倍率
調整機構等を設けることにより、入力サイズ，入力精度
の要求，作業スペースに応じて解像度，検出範囲を設定
できるさらに操作性に優れた位置検出入力装置を実現す
ることができる。Further, by providing the infrared CCD camera with a lens magnification adjusting mechanism and the like, a position detection input device having a further excellent operability can be set in which the resolution and the detection range can be set according to the input size, the input accuracy requirement, and the work space. Can be realized.
【００２７】さらに、座標位置を表示素子に顕示する表
示回路、又は、座標位置が２つの赤外線位置検出部のい
ずれか１つの撮影範囲を外れたとき警告音を発生する音
声回路部を備えたことにより、作業性，操作性に優れた
位置検出入力装置を実現することができる。Further, a display circuit for displaying the coordinate position on the display element, or a voice circuit unit for generating a warning sound when the coordinate position is out of the photographing range of any one of the two infrared position detecting units is provided. As a result, it is possible to realize a position detection input device having excellent workability and operability.
【図１】本発明の一実施例における位置検出入力装置の
構成を示すブロック図FIG. 1 is a block diagram showing a configuration of a position detection input device according to an embodiment of the present invention.
【図２】本発明の一実施例における位置検出入力装置の
各信号波形のタイミングチャートFIG. 2 is a timing chart of each signal waveform of the position detection input device according to the embodiment of the present invention.
【図３】本発明の一実施例における位置検出入力を示す
ｘ−ｙ座標図FIG. 3 is an xy coordinate diagram showing a position detection input according to an embodiment of the present invention.
【図４】従来の位置検出入力装置であるタブレット盤を
用いたペン入力装置の要部分解斜視図FIG. 4 is an exploded perspective view of a main part of a pen input device using a tablet board which is a conventional position detection input device.
１ 赤外線位置検出部 ２ａ，２ｂ 赤外線ＣＣＤカメラ ３ 赤外線ＬＥＤ ４ 座標入力部 ５ コントロール部 ６ リセット信号 ７ 垂直クロック信号 ８ 水平クロック信号 ９ａ，９ｂ 映像信号 １０ リセット信号回路 １１ 垂直クロック回路 １２ 水平クロック回路 １３ａ，１３ｂ ピーク検出回路 １４ａ，１４ｂ ピーク検出信号 １５ 演算回路 １６ インターフェース回路 １７ 表示回路 １８ａ，１８ｂ ピーク信号 ２１ タブレット盤 ２２ Ｘ方向電極 ２３ Ｙ方向電極 ２４ タッチペン 1 infrared position detector 2a, 2b infrared CCD camera 3 infrared LED 4 coordinate input unit 5 control unit 6 reset signal 7 vertical clock signal 8 horizontal clock signals 9a, 9b video signal 10 reset signal circuit 11 vertical clock circuit 12 horizontal clock circuit 13a , 13b Peak detection circuit 14a, 14b Peak detection signal 15 Calculation circuit 16 Interface circuit 17 Display circuit 18a, 18b Peak signal 21 Tablet board 22 X-direction electrode 23 Y-direction electrode 24 Touch pen
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4288595AJPH08240407A (en) | 1995-03-02 | 1995-03-02 | Position detection input device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4288595AJPH08240407A (en) | 1995-03-02 | 1995-03-02 | Position detection input device |
| Publication Number | Publication Date |
|---|---|
| JPH08240407Atrue JPH08240407A (en) | 1996-09-17 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4288595APendingJPH08240407A (en) | 1995-03-02 | 1995-03-02 | Position detection input device |
| Country | Link |
|---|---|
| JP (1) | JPH08240407A (en) |
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