JPH05143221A - Resistance pressure-sensitive type tablet - Google Patents
Resistance pressure-sensitive type tabletInfo
- Publication number
- JPH05143221A JPH05143221A JP33127091A JP33127091A JPH05143221A JP H05143221 A JPH05143221 A JP H05143221A JP 33127091 A JP33127091 A JP 33127091A JP 33127091 A JP33127091 A JP 33127091A JP H05143221 A JPH05143221 A JP H05143221A
- Authority
- JP
- Japan
- Prior art keywords
- axis
- resistance
- resistance plate
- section
- conversion 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.)
- Pending
Links
Abstract
(57)【要約】
【目的】 Ｘ軸抵抗板とＹ軸抵抗板とに、区分電極を設
けることなくＡ/Ｄ変換回路の精度の向上を図った抵抗
感圧型タブレットを得ることを目的とする。
【構成】 Ｘ軸電極の両端とＹ軸電極の両端とに、外部
抵抗を挿入し、この外部抵抗の途中に、抵抗板の出力を
区分するためのタップ端子を設け、抵抗の両端とタップ
端子を、検出された位置データに応じて各区分毎に切換
える切換スイッチを介してＡ/Ｄ変換回路に結合する。
Ｘ軸抵抗板の位置情報は、Ｘ接点側へ切換えて、ペンで
所定点を押圧して抵抗板における分割された各区分毎の
位置データを、Ａ/Ｄ変換回路で例えば２５６等分した
データと比較する。検出データが所定区分内に存在しな
ければオーバーフロー出力があらわれて切換スイッチを
順次各区分毎に切換えて設定された範囲内にあるとき、
位置データを出力する。Ｙ軸抵抗板の位置情報は、Ｙ接
点側へ切換えて同様にして検出する。
(57) [Abstract] [Purpose] An object of the present invention is to obtain a resistance pressure-sensitive tablet in which the accuracy of the A / D conversion circuit is improved without providing division electrodes on the X-axis resistance plate and the Y-axis resistance plate. .. [Structure] External resistors are inserted at both ends of the X-axis electrode and at both ends of the Y-axis electrode, and tap terminals for dividing the output of the resistance plate are provided in the middle of the external resistors. Is coupled to the A / D conversion circuit via a changeover switch for changing each section according to the detected position data.
The position information of the X-axis resistance plate is data obtained by switching the X contact side, pressing a predetermined point with a pen, and dividing the position data of each divided section of the resistance plate into 256 equal parts by the A / D conversion circuit. Compare with. If the detected data does not exist in the predetermined section, an overflow output appears and the changeover switch is sequentially changed over for each section, and within the set range,
Output position data. The position information of the Y-axis resistance plate is similarly detected by switching to the Y contact side.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ａ/Ｄ変換回路の分解
能以上の能力を得ることのできる抵抗感圧型タブレット
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance pressure-sensitive tablet capable of obtaining a capacity higher than the resolution of an A / D conversion circuit.
【０００２】[0002]
【従来の技術】一般に、抵抗感圧型タブレットは、図７
および図８に示すように、Ｘ軸方向の両端にＸ軸電極１
１、１１を有するＸ軸抵抗板１２と、Ｙ軸方向の両端に
Ｙ軸電極１３、１３を有するＹ軸抵抗板１４とを互いに
向き合わせて、ドットスペーサ１５で隙間を作り、上面
を除いてハウジングで包囲してなるものである。2. Description of the Related Art Generally, a resistance pressure-sensitive tablet is shown in FIG.
And as shown in FIG. 8, the X-axis electrodes 1 are provided at both ends in the X-axis direction.
The X-axis resistance plate 12 having 1 and 11 and the Y-axis resistance plate 14 having Y-axis electrodes 13 and 13 at both ends in the Y-axis direction are opposed to each other, and a gap is formed by the dot spacers 15 except for the upper surface. It is surrounded by a housing.
【０００３】そして、Ｘ軸抵抗板１２の位置情報を得る
には、まず切換スイッチ１６をＸ接点Ｘ1、Ｘ2、Ｘ3側
へ切換えて、ペン１７で所定点Ｐを押圧して両抵抗板１
２、１４を短絡する。抵抗板と導体との接触抵抗２２、
２３および導体抵抗２６、２７の抵抗値をそれぞれ
ｘ3、ｘ4、ｘ5、ｘ6とすれば、その点Ｐで分圧された電
圧 がＹ軸抵抗板１４のｙ2側を経てＸ軸位置情報としてＡ/
Ｄ変換回路２０に入力される。また、抵抗１９で設定さ
れた基準電圧もＡ/Ｄ変換回路２０に入力する。これら
のデータはディジタル値に変換されてさらに演算回路３
２に送られて前記（１）式の演算をしてＸ軸の位置情報
として出力端子２１に出力する。In order to obtain the position information of the X-axis resistance plate 12, first, the changeover switch 16 is changed over to the X contacts X 1 , X 2 and X 3 side, and the predetermined point P is pushed by the pen 17 to press the both resistances. Board 1
Short circuit 2 and 14. Contact resistance 22 between the resistance plate and the conductor,
Assuming that the resistance values of 23 and the conductor resistances 26 and 27 are x 3 , x 4 , x 5 and x 6 , respectively, the voltage divided at the point P is obtained. Passes through the y 2 side of the Y-axis resistance plate 14 and becomes A / as the X-axis position information.
It is input to the D conversion circuit 20. The reference voltage set by the resistor 19 is also input to the A / D conversion circuit 20. These data are converted into digital values and further processed by the arithmetic circuit 3
Then, the calculation is performed by the equation (1) and output to the output terminal 21 as X-axis position information.
【０００４】つぎに、ペン１７でＰ点を押圧したままで
切換スイッチ１６をＹ接点Ｙ1、Ｙ2、Ｙ3側へ切換え
る。そして、同様にしてＹ軸の分圧された電圧 がＸ軸抵抗板１２のｘ2側を経てＡ／Ｄ変換回路２０に
入力される。抵抗１９で設定された基準電圧も前記同様
Ａ／Ｄ変換回路２０に入力して、ディジタル値に変換さ
れ、さらに演算回路３２に送られて前記（２）式の演算
をしてＹ軸の位置情報として出力端子２１に出力され
る。Next, the changeover switch 16 is changed over to the Y contacts Y 1 , Y 2 , Y 3 side while the point P is being pressed by the pen 17. Then, similarly, the divided voltage of the Y-axis Is input to the A / D conversion circuit 20 via the x 2 side of the X-axis resistance plate 12. The reference voltage set by the resistor 19 is also input to the A / D conversion circuit 20 in the same manner as described above, converted into a digital value, and further sent to the arithmetic circuit 32 to perform the operation of the equation (2) to perform the Y-axis position. The information is output to the output terminal 21.
【０００５】本出願人は、図７に示すような抵抗感圧型
タブレットにおいて、接触抵抗２２、２３、２４、２５
と導体抵抗２６、２７、２８、２９の抵抗値が、個々の
タブレット毎に異なり、調整作業が極めて面倒であると
いう問題を有するので、これを改良した図６に示すもの
を提案した。これは、Ｘ軸抵抗板１２とＹ軸抵抗板１４
の両端のＸ軸電極１１、１１、Ｙ軸電極１３、１３より
やや内側に、それぞれＸ軸補助電極３０、３０とＹ軸補
助電極３１、３１を設け、これらの補助電極の上部分を
含む上面を除いてハウジングで包囲してなるものであ
る。The applicant of the present invention has developed a resistance pressure-sensitive tablet as shown in FIG. 7, which has contact resistances 22, 23, 24, 25.
Since the resistance values of the conductor resistances 26, 27, 28 and 29 are different for each tablet, and there is a problem that the adjustment work is extremely troublesome, the improved one shown in FIG. 6 was proposed. This is the X-axis resistance plate 12 and the Y-axis resistance plate 14.
The X-axis auxiliary electrodes 30, 30 and the Y-axis auxiliary electrodes 31, 31 are provided slightly inside the X-axis electrodes 11, 11, Y-axis electrodes 13, 13 at both ends of the upper surface including the upper portions of these auxiliary electrodes. It is one that is surrounded by a housing except for.
【０００６】以上のような装置における位置情報の精度
は、補助電極３０、３０間および３１、３１間のデータ
がＡ/Ｄ変換回路２０で例えば２５６等分したどの点に
対応するかによって設定されていた。そのため、Ａ/Ｄ
変換回路２０の精度を向上するには、このＡ/Ｄ変換回
路２０をさらに複雑な回路構成として細かに区分しなけ
ればならなかった。The accuracy of the position information in the above device is set depending on which point the data between the auxiliary electrodes 30 and 30 and between the electrodes 31 and 31 corresponds to, for example, 256 equal parts in the A / D conversion circuit 20. Was there. Therefore, A / D
In order to improve the accuracy of the conversion circuit 20, the A / D conversion circuit 20 had to be finely divided into a more complicated circuit configuration.
【０００７】本出願人は、Ａ/Ｄ変換回路は従前の精度
であっても抵抗板に区分電極を設けることによってさら
に精度の向上を図ったものとして図４および図５に示す
ものをすでに提案した（特願平２−３１３２３９）。こ
のうち、図４に示すものは、Ｘ軸抵抗板１２とＹ軸抵抗
板１４とを区分電極６１によって２区分した点に特徴を
有するものである。なお、図７のように、両端の電極１
１、１１、１３、１３だけのときにはこれらの電極の間
を、これらと平行な区分電極６１で２区分し、また、図
６のように、両端の電極１１、１１、１３、１３よりや
や内側に、それぞれＸ軸補助電極３０、３０とＹ軸補助
電極３１、３１を設けてなるときには、これらの補助電
極の間を区分電極６１で区分する。図４はＸ軸抵抗板１
２について記載してあるが、Ｙ軸抵抗板１４についても
必要に応じて同様に区分できるので、図示省略した。The applicant of the present invention has already proposed the A / D conversion circuit shown in FIGS. 4 and 5 as the one having further improved accuracy by providing the division electrode on the resistance plate even if the accuracy is the same as before. (Japanese Patent Application No. 2-313239). Among them, the one shown in FIG. 4 is characterized in that the X-axis resistance plate 12 and the Y-axis resistance plate 14 are divided into two by the division electrode 61. In addition, as shown in FIG.
When only 1, 11, 13, and 13 are provided, the electrodes are divided into two sections by a sectioning electrode 61 which is parallel to these electrodes, and as shown in FIG. 6, slightly inside the electrodes 11, 11, 13, and 13 at both ends. In addition, when the X-axis auxiliary electrodes 30 and 30 and the Y-axis auxiliary electrodes 31 and 31 are provided, the auxiliary electrodes are divided by the division electrode 61. Figure 4 shows X-axis resistance plate 1
2 is described, but the Y-axis resistance plate 14 can be similarly divided as necessary, and therefore is not shown.
【０００８】前記区分電極６１で抵抗板１２を第１区分
１２1、第２区分１２2の２つに区分し、＋側の補助電極
３０を第１の切換スイッチ６３の一方の接点ａに結合
し、区分電極６１を第１の切換スイッチ６３の他方の接
点ｂと、第２の切換スイッチ６４の一方の接点ａに結合
し、−側の補助電極３０を第２の切換スイッチ６４の他
方の接点ｂに結合し、これら第１、第２の切換スイッチ
６３、６４の共通接点をＡ/Ｄ変換回路２０の＋入力側
Ｒ＋と−入力側Ｒ−に結合し、ペン１７の位置出力はこ
れらの中間ＡＤに結合する。このＡ/Ｄ変換回路２０の
データ出力Ｄとオーバーフロー出力ＯＦの端子はＣＰＵ
６２に結合され、このＣＰＵ６２はオーバーフロー出力
ＯＦで前記第１、第２切換スイッチ６３、６４を切換え
るとともにデータを出力する。The dividing electrode 61 divides the resistance plate 12 into two sections, a first section 12 1 and a second section 12 2 , and the + side auxiliary electrode 30 is connected to one contact a of the first changeover switch 63. Then, the partition electrode 61 is coupled to the other contact b of the first changeover switch 63 and one contact a of the second changeover switch 64, and the − side auxiliary electrode 30 is connected to the other contact b of the second changeover switch 64. Connected to the contact b, the common contacts of the first and second changeover switches 63 and 64 are connected to the + input side R + and the − input side R− of the A / D conversion circuit 20, and the position output of the pen 17 is To the intermediate AD of. The terminals of the data output D and the overflow output OF of the A / D conversion circuit 20 are the CPU
The CPU 62 is coupled to the switch 62 to switch the first and second changeover switches 63 and 64 by the overflow output OF and output the data.
【０００９】以上のような構成において、ピン１７で所
定点Ｐを押圧したときの分圧されたＸ軸抵抗板１２の電
圧はＹ軸抵抗板１４のｙ2とＹ軸補助電極３１を経てＡ/
Ｄ変換回路２０へ送られる。ここで、図４のように、第
１、第２切換スイッチ６３、６４が第１区分１２1側の
接点ａ、ａに切換えられているものとし、かつ、ペン１
７は第２区分１２2内のＰ点を押圧しているものとする
と、＋補助電極３０の電圧と、区分電極６１の電圧がリ
ファレンス電圧としてＡ/Ｄ変換回路２０へ送られる。
これらはＰ点の電圧より大であり、範囲外であるため、
オーバーフロー出力ＯＦがあらわれ、ＣＰＵ６２から切
換信号が出力して第２区分１２2側の接点ｂ、ｂ側へ切
換えられる。すると、Ｐ点の出力は区分電極６１と補助
電極３０間の電圧の範囲内となり、位置データが出力さ
れる。図示しないが、Ｙ軸抵抗板１４についても同様に
して位置データが出力される。In the structure described above, the voltage of the divided X-axis resistance plate 12 when the pin 17 presses the predetermined point P is y 2 of the Y-axis resistance plate 14 and A via the Y-axis auxiliary electrode 31. /
It is sent to the D conversion circuit 20. Here, as shown in FIG. 4, it is assumed that the first and second changeover switches 63, 64 are changed over to the contacts a, a on the first section 12 1 side, and the pen 1
7 assuming that presses the P point of the second section 12 2, + and the voltage of the auxiliary electrode 30, the voltage of the segment electrode 61 is sent to the A / D conversion circuit 20 as the reference voltage.
These are higher than the voltage at point P and are out of range, so
An overflow output OF appears, and a switching signal is output from the CPU 62 to switch the contacts b, b on the second section 12 2 side. Then, the output at point P falls within the range of the voltage between the segment electrode 61 and the auxiliary electrode 30, and the position data is output. Although not shown, position data is output in the same manner for the Y-axis resistance plate 14.
【００１０】つぎに、図５の例では、２本の区分電極６
１、６１で１２1、１２2、１２3の３つに区分した例を
示している。この場合、第１、第２切換スイッチ６３、
６４は、第１区分接点ａ、ａ、第２区分接点ｂ、ｂ、第
３区分接点ｃ、ｃを順次切換えるようにすればよくその
作用は前記同様である。Next, in the example of FIG. 5, two section electrodes 6 are provided.
An example is shown in which the numbers 1 and 61 are divided into three parts 12 1 , 12 2 and 12 3 . In this case, the first and second changeover switches 63,
The 64 may be arranged so that the first section contacts a, a, the second section contacts b, b, and the third section contacts c, c are sequentially switched, and the operation is the same as described above.
【００１１】[0011]
【発明が解決しようとする課題】図４および図５に示す
ものは、Ｘ軸抵抗板１２とＹ軸抵抗板１４とを区分電極
６１によって２以上に区分した点に特徴を有するもので
あるが、各区分電極から切換スイッチまでリード線で結
合して回路を構成しなければならない。Ｘ軸抵抗板１２
とＹ軸抵抗板１４とは、透明な導電膜であるのに対し、
区分電極６１は一般的に不透明なものが多いので、見栄
えが悪くなるという問題があった。4 and 5 is characterized in that the X-axis resistance plate 12 and the Y-axis resistance plate 14 are divided into two or more by the division electrode 61. , The circuit must be constructed by connecting each section electrode to the changeover switch with a lead wire. X-axis resistance plate 12
While the Y-axis resistance plate 14 and the Y-axis resistance plate 14 are transparent conductive films,
Since many of the partition electrodes 61 are generally opaque, there is a problem in that they do not look good.
【００１２】本発明は、Ｘ軸抵抗板とＹ軸抵抗板とに、
区分電極を設けることなくＡ/Ｄ変換回路の精度の向上
を図ったものを得ることを目的とする。The present invention provides an X-axis resistance plate and a Y-axis resistance plate,
It is an object of the present invention to obtain an A / D conversion circuit with improved accuracy without providing division electrodes.
【００１３】[0013]
【課題を解決するための手段】本発明は、絶縁基板上の
抵抗層の両端に、Ｘ軸電極を形成したＸ軸抵抗板と、絶
縁基板上の抵抗層の両端に、Ｙ軸電極を形成したＹ軸抵
抗板とをわずかな絶縁空隙をもって重合してなるタブレ
ットにおいて、前記両端のＸ軸電極間と、前記両端のＹ
軸電極間の少なくともいずれか一方に、外部抵抗を挿入
し、この外部抵抗の途中に、前記抵抗板の出力を区分す
るためのタップ端子を設け、前記抵抗の両端とタップ端
子を、検出された位置データに応じて各区分毎に切換え
る切換スイッチを介してＡ/Ｄ変換回路に結合してなる
ことを特徴とする抵抗感圧型タブレットである。According to the present invention, an X-axis resistance plate having X-axis electrodes formed on both ends of a resistance layer on an insulating substrate and a Y-axis electrode formed on both ends of the resistance layer on an insulating substrate. A Y-axis resistance plate and a Y-axis resistance plate, which are superposed with a slight insulating gap, between the X-axis electrodes at both ends and the Y-axis at both ends.
An external resistance is inserted in at least one of the shaft electrodes, and a tap terminal for dividing the output of the resistance plate is provided in the middle of the external resistance, and both ends of the resistance and the tap terminal are detected. A resistance pressure-sensitive tablet characterized in that it is connected to an A / D conversion circuit via a change-over switch for changing each section according to position data.
【００１４】[0014]
【作用】Ｘ軸抵抗板の位置情報を得るには、まず切換ス
イッチをＸ接点側へ切換えて、ペンで所定点を押圧して
Ｘ軸とＹ軸の両抵抗板間を短絡する。すると、抵抗板の
タップ端子で分割された各区分毎の位置データが、Ａ/
Ｄ変換回路で例えば２５６等分したデータと比較され
る。もし、検出データが所定区分内に存在しなければオ
ーバーフロー出力があらわれて切換スイッチを順次各区
分毎に切換えて設定された範囲内にあるかどうかを判定
し、該当する範囲内のとき位置データを出力する。つぎ
に、ペンで所定点を押圧したままで切換スイッチをＹ接
点側へ切換えて同様にしてＹ軸位置情報が得られる。In order to obtain the position information of the X-axis resistance plate, first, the changeover switch is switched to the X contact side, and a predetermined point is pressed by the pen to short-circuit both the X-axis resistance plate and the Y-axis resistance plate. Then, the position data for each section divided by the tap terminal of the resistance plate is A /
The data is compared with, for example, 256 equal data in the D conversion circuit. If the detected data does not exist in the specified section, an overflow output appears and the changeover switch is sequentially switched for each section to determine whether it is within the set range. Output. Next, the Y-axis position information is obtained in the same manner by switching the changeover switch to the Y contact side while the predetermined point is being pressed by the pen.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面に基づき説明す
る。図１は、前述した図６と同様、電極のやや内側に補
助電極を形成した場合を示している。そして、本発明で
は、両端の補助電極間に、抵抗を挿入し、この抵抗の途
中にタップ端子を設けたものである。まず、Ｘ軸抵抗板
１２の場合についてさらに詳しく説明する。Ｘ軸抵抗板
１２には、その両端にＸ軸電極１１、１１が形成され、
さらにそのやや内側に、Ｘ軸補助電極３０、３０が形成
されている。このＸ軸補助電極３０、３０の間に、バッ
ファ回路４５、４６を介して抵抗４７を挿入する。この
抵抗４７は、その両端からやや内側の点Ａ、Ｃと、略中
間の点Ｂで４分割して、抵抗４８、４９1、４９2、５０
とする。Embodiments of the present invention will be described below with reference to the drawings. Similar to FIG. 6 described above, FIG. 1 shows a case where an auxiliary electrode is formed slightly inside the electrode. Further, in the present invention, a resistor is inserted between the auxiliary electrodes at both ends, and a tap terminal is provided in the middle of this resistor. First, the case of the X-axis resistance plate 12 will be described in more detail. The X-axis resistance plate 12 has X-axis electrodes 11 and 11 formed at both ends thereof,
Further, the X-axis auxiliary electrodes 30, 30 are formed slightly inside thereof. A resistor 47 is inserted between the X-axis auxiliary electrodes 30 and 30 via buffer circuits 45 and 46. The resistor 47 is divided into four parts at points A and C slightly inward from both ends and a point B approximately in the middle, and resistors 48, 49 1 , 49 2 and 50 are divided.
And
【００１６】このうち、点Ａは、第１の切換スイッチ６
３の一方の接点ａに結合され、点Ｂは、第１の切換スイ
ッチ６３の他方の接点ｂと、第２の切換スイッチ６４の
一方の接点ａに結合され、点Ｃは、第２の切換スイッチ
６４の他方の接点ｂに結合し、これら第１、第２の切換
スイッチ６３、６４の共通接点を、バッファ回路５１、
５２を介してＡ/Ｄ変換回路２０の＋入力側(Ｒ＋)と−
入力側(Ｒ−)に結合し、ペン１７の位置出力はこれらの
中間ＡＤに結合する。このＡ/Ｄ変換回路２０のデータ
出力Ｄとオーバーフロー出力ＯＦの端子はＣＰＵ６２に
結合され、このＣＰＵ６２はオーバーフロー出力ＯＦで
前記第１、第２切換スイッチ６３、６４で切換えるとと
もにデータを出力する。Of these points, the point A is the first changeover switch 6
3 is coupled to one contact a, point B is coupled to the other contact b of the first changeover switch 63 and one contact a of the second changeover switch 64, and point C is the second changeover switch. The common contact of the first and second changeover switches 63 and 64 is connected to the other contact b of the switch 64 and the buffer circuit 51,
52 through the + input side (R +) of the A / D conversion circuit 20 and-
Coupled to the input side (R-), the position output of pen 17 is coupled to these intermediate ADs. The terminals of the data output D and the overflow output OF of the A / D conversion circuit 20 are coupled to the CPU 62. The CPU 62 outputs the data while switching the overflow output OF with the first and second changeover switches 63 and 64.
【００１７】このようにして、抵抗４７を抵抗４８、４
９1、４９2、５０の比で分割した点Ａ、Ｂ、Ｃと同じ比
で、Ｘ軸抵抗板１２のＸ軸補助電極３０、３０間が分割
されたこととなり、その点をａ、ｂ、ｃとする。する
と、抵抗板１２は、第１区分１２1、第２区分１２2の２
つに区分される。In this way, the resistor 47 is connected to the resistors 48, 4 and
9 1, 49 2, 50 points was divided by the ratio of A, B, in the same ratio as C, will be between X-axis auxiliary electrodes 30 and 30 of the X-axis resistor board 12 is divided, that point a, b , C. Then, the resistance plate 12 is divided into the first section 12 1 and the second section 12 2 .
It is divided into two.
【００１８】つぎに、以上のような構成において、ピン
１７で所定点Ｐを押圧したときの分圧されたＸ軸抵抗板
１２の電圧はＹ軸抵抗板１４のｙ2とＹ軸補助電極３１
を経てＡ/Ｄ変換回路２０へ送られる。ここで、図１の
ように、第１、第２切換スイッチ６３、６４が第１区分
１２1側の接点ａ、ａに切換えられているものとし、か
つ、ペン１７は第２区分１２2内のＰ点を押圧している
ものとすると、点Ａの電圧と、点Ｂの電圧がリファレン
ス電圧としてＡ/Ｄ変換回路２０へ送られる。これらは
Ｐ点の電圧より大であり、範囲外であるため、オーバー
フロー出力ＯＦがあらわれ、ＣＰＵ６２から切換信号が
出力して第２区分１２2側の接点ｂ、ｂ側へ切換えられ
る。すると、Ｐ点の出力は、点Ａと点Ｂ間の電圧の範囲
内となり、位置データが出力される。図示しないが、Ｙ
軸抵抗板１４についても同様にして位置データが出力さ
れる。図１では、Ｘ軸抵抗板１２についてだけ記載して
あるが、Ｙ軸抵抗板１４についても必要に応じて同様な
構成として、位置データが出力される。Next, in the above structure, the voltage of the divided X-axis resistance plate 12 when the pin 17 presses the predetermined point P is y 2 of the Y-axis resistance plate 14 and the Y-axis auxiliary electrode 31.
And is sent to the A / D conversion circuit 20. Here, as shown in FIG. 1, it is assumed that the first and second changeover switches 63, 64 are switched to the contacts a, a on the first section 12 1 side, and the pen 17 is in the second section 12 2 . Assuming that the point P is pressed, the voltage at the point A and the voltage at the point B are sent to the A / D conversion circuit 20 as reference voltages. Since these are higher than the voltage at the point P and out of the range, an overflow output OF appears, and a switching signal is output from the CPU 62 to switch to the contacts b, b on the second section 12 2 . Then, the output at the point P falls within the voltage range between the points A and B, and the position data is output. Although not shown, Y
Similarly, position data is output for the axial resistance plate 14. In FIG. 1, only the X-axis resistance plate 12 is shown, but the Y-axis resistance plate 14 also has the same configuration as necessary, and position data is output.
【００１９】図１では、抵抗板１２を２区分した例を示
したが、図４では、抵抗４７を、４８、４９1、４９2、
４９3、４９4、５０に区分するようにタップ端子Ａ、
Ｂ、Ｃ、Ｄ、Ｅを設ければ、抵抗板１２は、第１区分１
２1、第２区分１２2、第３区分１２3、第４区分１２4の
４つに区分される。また、この区分する数は、以上の例
に限られるものではない。Ｘ軸抵抗板１２とＹ軸抵抗板
１４の区分数も同一である必要はない。Although FIG. 1 shows an example in which the resistance plate 12 is divided into two, in FIG. 4, the resistance 47 is changed to 48, 49 1 , 49 2 ,
Tap terminals A, which are divided into 49 3 , 49 4 and 50
If B, C, D, and E are provided, the resistance plate 12 is in the first section 1
It is divided into four, that is, 2 1 , second section 12 2 , third section 12 3 and fourth section 12 4 . Further, the number of divisions is not limited to the above example. The number of sections of the X-axis resistance plate 12 and the Y-axis resistance plate 14 need not be the same.
【００２０】図１および図２の例では、図６と同様に、
接触抵抗２２、２３、２４、２５と導体抵抗２６、２
７、２８、２９の抵抗値が、個々のタブレット毎にその
数値が異なり、調整作業が極めて面倒であるという問題
を、それぞれＸ軸補助電極３０、３０とＹ軸補助電極３
１、３１を設けて、これを改良したものに応用した場合
を説明した。しかし、この場合に限られるものではな
く、図３に示すように、Ｘ軸補助電極３０、３０とＹ軸
補助電極３１、３１を有しないものであっても、本発明
は有効である。In the example of FIGS. 1 and 2, as in FIG.
Contact resistances 22, 23, 24, 25 and conductor resistances 26, 2
The resistance value of 7, 28, 29 is different for each tablet, and the adjustment work is very troublesome. Therefore, the X-axis auxiliary electrodes 30, 30 and the Y-axis auxiliary electrode 3 have problems.
The case of providing Nos. 1 and 31 and applying it to the improved one has been described. However, the present invention is not limited to this case, and the present invention is effective even if the X-axis auxiliary electrodes 30 and 30 and the Y-axis auxiliary electrodes 31 and 31 are not provided as shown in FIG.
【００２１】[0021]
【発明の効果】本発明は、タブレットにおいて、両端の
Ｘ軸電極間と、両端のＹ軸電極間の少なくともいずれか
一方に、外部抵抗を挿入し、この外部抵抗の途中に、前
記抵抗板の出力を区分するためのタップ端子を設け、前
記抵抗の両端とタップ端子を、検出された位置データに
応じて各区分毎に切換える切換スイッチを介してＡ/Ｄ
変換回路に結合してなるので、抵抗にタップ端子を設け
て引出すことにより、実質的に抵抗板が複数個に区分さ
れたこととなり、従来のＡ／Ｄ変換回路を用いながら位
置精度を向上させることができる。しかも、各区分電極
から切換スイッチまでリード線で結合して回路を構成す
る必要がないから、回路構成が簡単になるとともに、調
整が不必要となるなどの効果を有する。According to the present invention, in the tablet, an external resistor is inserted between at least one of the X-axis electrodes at both ends and between the Y-axis electrodes at both ends, and the resistor plate of the resistor plate is inserted in the middle of the external resistor. A tap terminal for dividing the output is provided, and the both ends of the resistor and the tap terminal are switched for each section according to the detected position data.
Since it is connected to the conversion circuit, by providing a tap terminal to the resistor and pulling it out, the resistance plate is substantially divided into a plurality of parts, and the positional accuracy is improved while using the conventional A / D conversion circuit. be able to. In addition, since it is not necessary to connect each section electrode to the changeover switch with a lead wire to form a circuit, the circuit configuration is simplified and adjustment is unnecessary.
【図１】本発明による抵抗感圧型タブレットの第１実施
例を示す回路図である。FIG. 1 is a circuit diagram showing a first embodiment of a resistance pressure sensitive tablet according to the present invention.
【図２】本発明による抵抗感圧型タブレットの第２実施
例を示す回路図である。FIG. 2 is a circuit diagram showing a second embodiment of the resistance pressure-sensitive tablet according to the present invention.
【図３】本発明による抵抗感圧型タブレットの第３実施
例を示す回路図である。FIG. 3 is a circuit diagram showing a third embodiment of the resistance pressure sensitive tablet according to the present invention.
【図４】本出願人により先に提案した抵抗感圧型タブレ
ットの回路図である。FIG. 4 is a circuit diagram of a resistance pressure sensitive tablet previously proposed by the present applicant.
【図５】本出願人により先に提案した抵抗感圧型タブレ
ットの回路図である。FIG. 5 is a circuit diagram of a resistance pressure sensitive tablet previously proposed by the present applicant.
【図６】従来の抵抗感圧型タブレットの回路図である。FIG. 6 is a circuit diagram of a conventional resistance pressure-sensitive tablet.
【図７】従来の抵抗感圧型タブレットの回路図である。FIG. 7 is a circuit diagram of a conventional resistance pressure-sensitive tablet.
【図８】従来の抵抗感圧型タブレットの断面図である。FIG. 8 is a sectional view of a conventional resistance pressure-sensitive tablet.
１１…Ｘ軸電極、１２…Ｘ軸抵抗板、１３…Ｙ軸電極、
１４…Ｙ軸抵抗板、１５…ドットスペーサ、１６…切換
えスイッチ、１７…ペン、１９…抵抗、２０…Ａ／Ｄ変
換回路、２１…出力端子、２２、２３、２４、２５…接
触抵抗、２６、２７、２８、２９…導体抵抗、３０…Ｘ
軸補助電極、３１…Ｙ軸補助電極、３２…演算回路、３
３、３４、３５、３６…接触抵抗、３７、３８、３９、
４０…導体抵抗、４５、４６…バッファ回路、４７、４
８、４９1、４９2、４９3、４９4、５０…抵抗、５１、
５２…バッファ回路、６１…区分電極、６２…ＣＰＵ、
６３、６４…切換スイッチ、Ａ、Ｂ、Ｃ、Ｄ、Ｅ…タッ
プ端子。11 ... X-axis electrode, 12 ... X-axis resistance plate, 13 ... Y-axis electrode,
14 ... Y-axis resistance plate, 15 ... Dot spacer, 16 ... Changeover switch, 17 ... Pen, 19 ... Resistor, 20 ... A / D conversion circuit, 21 ... Output terminal, 22, 23, 24, 25 ... Contact resistance, 26 , 27, 28, 29 ... Conductor resistance, 30 ... X
Axis auxiliary electrode, 31 ... Y-axis auxiliary electrode, 32 ... Arithmetic circuit, 3
3, 34, 35, 36 ... Contact resistance, 37, 38, 39,
40 ... Conductor resistance, 45, 46 ... Buffer circuit, 47, 4
8, 49 1 , 49 2 , 49 3 , 49 4 , 50 ... Resistance, 51,
52 ... Buffer circuit, 61 ... Sorting electrode, 62 ... CPU,
63, 64 ... Changeover switch, A, B, C, D, E ... Tap terminals.
Claims (3)
を形成したＸ軸抵抗板と、絶縁基板上の抵抗層の両端
に、Ｙ軸電極を形成したＹ軸抵抗板とをわずかな絶縁空
隙をもって重合してなるタブレットにおいて、前記両端
のＸ軸電極間と、前記両端のＹ軸電極間の少なくともい
ずれか一方に、外部抵抗を挿入し、この外部抵抗の途中
に、前記抵抗板の出力を区分するためのタップ端子を設
け、前記抵抗の両端とタップ端子を、検出された位置デ
ータに応じて各区分毎に切換える切換スイッチを介して
Ａ/Ｄ変換回路に結合してなることを特徴とする抵抗感
圧型タブレット。1. An X-axis resistance plate having X-axis electrodes formed on both ends of a resistance layer on an insulating substrate and a Y-axis resistance plate having Y-axis electrodes formed on both ends of a resistance layer on an insulating substrate are slightly provided. In a tablet formed by superimposing with an insulating void, an external resistance is inserted between at least one of the X-axis electrodes at both ends and between the Y-axis electrodes at both ends, and the resistance plate is inserted in the middle of the external resistance. A tap terminal for dividing the output of the resistor is provided, and both ends of the resistor and the tap terminal are coupled to an A / D conversion circuit through a changeover switch for changing each division according to the detected position data. A resistance pressure-sensitive tablet.
を形成したＸ軸抵抗板と、絶縁基板上の抵抗層の両端
に、Ｙ軸電極を形成したＹ軸抵抗板とをわずかな絶縁空
隙をもって重合してなるタブレットにおいて、前記Ｘ軸
電極とＹ軸電極との内側にそれぞれＸ軸補助電極とＹ軸
補助電極を設け、この両端のＸ軸補助電極間と、両端の
Ｙ軸補助電極間の少なくともいずれか一方に、外部抵抗
を挿入し、この外部抵抗の途中に、前記抵抗板の出力を
区分するためのタップ端子を設け、前記抵抗の両端とタ
ップ端子を、検出された位置データに応じて各区分毎に
切換える切換スイッチを介してＡ/Ｄ変換回路に結合し
てなることを特徴とする抵抗感圧型タブレット。2. An X-axis resistance plate having X-axis electrodes formed on both ends of the resistance layer on the insulating substrate and a Y-axis resistance plate having Y-axis electrodes formed on both ends of the resistance layer on the insulating substrate. In a tablet formed by superimposing with an insulating void, an X-axis auxiliary electrode and a Y-axis auxiliary electrode are provided inside the X-axis electrode and the Y-axis electrode, respectively, and between the X-axis auxiliary electrodes at both ends and the Y-axis at both ends. An external resistance is inserted in at least one of the auxiliary electrodes, and a tap terminal for dividing the output of the resistance plate is provided in the middle of the external resistance, and both ends of the resistance and the tap terminal are detected. A resistance pressure-sensitive tablet characterized in that it is connected to an A / D conversion circuit via a changeover switch that switches each section according to position data.
し、オーバーフローしたとき、切換スイッチを他の区分
側へ切換えるためのＣＰＵを付加してなる請求項１また
は２記載の抵抗感圧型タブレット。3. A resistance pressure-sensitive type according to claim 1, further comprising a CPU for comparing the voltage of each section with the position information voltage and switching the changeover switch to the other section side when an overflow occurs. Tablet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33127091A JPH05143221A (en) | 1991-11-20 | 1991-11-20 | Resistance pressure-sensitive type tablet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33127091A JPH05143221A (en) | 1991-11-20 | 1991-11-20 | Resistance pressure-sensitive type tablet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05143221A true JPH05143221A (en) | 1993-06-11 |
Family
ID=18241815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33127091A Pending JPH05143221A (en) | 1991-11-20 | 1991-11-20 | Resistance pressure-sensitive type tablet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05143221A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320522A (en) * | 1986-07-14 | 1988-01-28 | Omron Tateisi Electronics Co | Coordinate input device |
| JPS63246032A (en) * | 1987-03-31 | 1988-10-13 | Sony Corp | A/d conversion circuit |
-
1991
- 1991-11-20 JP JP33127091A patent/JPH05143221A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320522A (en) * | 1986-07-14 | 1988-01-28 | Omron Tateisi Electronics Co | Coordinate input device |
| JPS63246032A (en) * | 1987-03-31 | 1988-10-13 | Sony Corp | A/d conversion circuit |
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