JPH1063403A - Coordinate position input device - Google Patents
Coordinate position input deviceInfo
- Publication number
- JPH1063403A JPH1063403A JP22487096A JP22487096A JPH1063403A JP H1063403 A JPH1063403 A JP H1063403A JP 22487096 A JP22487096 A JP 22487096A JP 22487096 A JP22487096 A JP 22487096A JP H1063403 A JPH1063403 A JP H1063403A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- coordinate position
- input device
- layers
- detection
- 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
Links
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- Position Input By Displaying (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、情報機器の画面カ
ーソル座標位置を入力するのに用いられる座標位置入力
装置に関するものである。[0001] 1. Field of the Invention [0002] The present invention relates to a coordinate position input device used for inputting a screen cursor coordinate position of an information device.
【０００２】[0002]
【従来の技術】図４を使用し、従来技術について説明す
る。2. Description of the Related Art A conventional technique will be described with reference to FIG.
【０００３】図４は従来の座標位置入力装置の概略を示
す構成図であり、同図において、４００は複数の帯状抵
抗体、４０１は操作者の指、４０２は回路グラウンド、
４０３は操作者の指４０１によって抵抗体４００と回路
グラウンド４０２との間に見掛け上形成される静電容
量、４０４，４０５は抵抗体４００の選択部、４０６，
４０７は抵抗体４００の駆動部、４０８，４０９は駆動
部４０６，４０７の基準電圧、４１０，４１１は電流を
電圧に変換するＩ／Ｖ変換部、４１２，４１３は電圧を
ディジタル値に変換するＡ／Ｄ変換部、４１４は制御
部、４１５は選択部４０４，４０５の制御信号、４１６
は駆動部４０６，４０７の制御信号である。いま、Ｘ，
Ｙは直交座標平面の軸であり、説明がしやすいように抵
抗体４００の単体をＳn＝（ｎ＝１，２，．．．ｎ）と
しＳnは図４に示すようにＹ軸と平行でＸ軸に沿って配
置されているものとする。また、静電容量４０３の大き
さをＣ、基準電圧４０８の大きさをＥ1、基準電圧４０
９の大きさをＥ2とする。FIG. 4 is a block diagram schematically showing a conventional coordinate position input device. In FIG. 4, reference numeral 400 denotes a plurality of strip-shaped resistors, 401 denotes an operator's finger, 402 denotes a circuit ground,
403 is an apparent capacitance formed between the resistor 400 and the circuit ground 402 by the operator's finger 401, 404 and 405 are selectors of the resistor 400, 406 and
407 is a drive unit of the resistor 400, 408 and 409 are reference voltages of the drive units 406 and 407, 410 and 411 are I / V conversion units that convert current to voltage, and 412 and 413 are A that convert voltage to digital value. / D conversion unit, 414 is a control unit, 415 is a control signal of the selection unit 404, 405, 416
Is a control signal for the driving units 406 and 407. Now, X,
Y is an axis of a rectangular coordinate plane, and the simple substance of the resistor 400 is set to Sn = (n = 1, 2,... N) for easy explanation, and Sn is parallel to the Y axis as shown in FIG. It is assumed that they are arranged along the X axis. Also, the magnitude of the capacitance 403 is C, the magnitude of the reference voltage 408 is E1,
The size of 9 is E2.
【０００４】最初に、操作者の指４０１が図４のように
抵抗体Ｓ1のＹ軸方向のｙ1：ｙ2となる位置にある場合
のＹ軸方向の位置検出原理を以下に説明する。First, the principle of position detection in the Y-axis direction when the operator's finger 401 is at the position of y1: y2 in the Y-axis direction of the resistor S1 as shown in FIG. 4 will be described below.
【０００５】まず、抵抗体Ｓ1のｙ1側の抵抗値をＲ1、
ｙ2側の抵抗値をＲ2とすると次の関係が成り立つ。First, the resistance of the resistor S1 on the y1 side is represented by R1,
If the resistance value on the y2 side is R2, the following relationship holds.
【０００６】[0006]
【数１】 (Equation 1)
【０００７】そして制御部４１４は、制御信号４１５で
選択部４０４，４０５の選択を抵抗体Ｓ1とし、制御信
号４１６で駆動部４０６，４０７の設定を基準電圧Ｅ1
側とすると、容量Ｃの電圧はＥ1となる。この状態で駆
動部４０６，４０７の設定を基準電圧Ｅ2側に切り替え
ると、Ｅ1＞Ｅ2の時は容量Ｃの電荷が電圧Ｅ2になるま
でＲ1，Ｒ2を通して放電される。この時Ｒ1を流れる電
流をＩ1、Ｒ2を流れる電流をＩ2とするとThe control unit 414 uses the control signal 415 to select the selection units 404 and 405 as the resistor S1, and the control signal 416 sets the settings of the driving units 406 and 407 to the reference voltage E1.
, The voltage of the capacitor C becomes E1. When the setting of the driving units 406 and 407 is switched to the reference voltage E2 side in this state, when E1> E2, the capacitor C is discharged through R1 and R2 until the charge of the capacitor C reaches the voltage E2. At this time, if the current flowing through R1 is I1 and the current flowing through R2 is I2
【０００８】[0008]
【数２】 (Equation 2)
【０００９】なので次の関係が成り立つ。Therefore, the following relationship is established.
【００１０】[0010]
【数３】 (Equation 3)
【００１１】ここで（数１）、（数３）より次の関係が
成り立つ。Here, the following relationship is established from (Equation 1) and (Equation 3).
【００１２】[0012]
【数４】 (Equation 4)
【００１３】よって電流Ｉ1とＩ2の比によってＹ軸方向
の操作者の指４０１の座標位置がわかる。Therefore, the coordinate position of the operator's finger 401 in the Y-axis direction can be determined from the ratio between the currents I1 and I2.
【００１４】また、Ｅ1＜Ｅ2の時は容量Ｃの電荷が電圧
Ｅ2になるまでＲ1，Ｒ2を通して充電されるので、Ｉ1，
Ｉ2は方向が逆になり−Ｉ1，−Ｉ2となるが（数３）は
成り立つので、Ｅ1＜Ｅ2としてもよい。When E1 <E2, the charge of the capacitor C is charged through R1 and R2 until the voltage of the capacitor C reaches the voltage E2.
Although the direction of I2 is reversed and becomes -I1 and -I2, (Equation 3) holds, so that E1 <E2 may be satisfied.
【００１５】そして、Ｉ1，Ｉ2はＩ／Ｖ変換部４１０，
４１１でそれぞれ電圧値に変換し、Ａ／Ｄ変換部４１
２，４１３でそれぞれディジタル値に変換し、制御部４
１４へ入力し、制御部４１４でＹ軸方向の操作者の指４
０１の座標位置を計算する。I1 and I2 are I / V converters 410 and
At 411, the voltage is converted into a voltage value, and the A / D converter 41
2 and 413 respectively convert the data into digital values.
14 and the control unit 414 controls the operator's finger 4 in the Y-axis direction.
The coordinate position of 01 is calculated.
【００１６】続いて制御部４１４は、制御信号４１５で
選択部４０４，４０５の選択を抵抗体Ｓ2，Ｓ3．．．Ｓ
nと順次行いながら、上記と同じように制御信号４１６
で駆動部４０６，４０７を制御することにより、抵抗体
Ｓ2，Ｓ3．．．Ｓnそれぞれでの電流Ｉ1，Ｉ2を検出す
ることができるので、操作者の指４０１が抵抗体Ｓ1以
外の抵抗体の位置にあってもＹ軸方向の操作者の指４０
１の座標位置を計算することができる。Subsequently, the control section 414 uses the control signal 415 to select the selection sections 404, 405 from the resistors S2, S3. . . S
n, and the control signal 416 in the same manner as described above.
By controlling the driving units 406 and 407 with the resistors S2, S3. . . Since the currents I1 and I2 of the respective Sn can be detected, even if the operator's finger 401 is at a position of a resistor other than the resistor S1, the operator's finger 40 in the Y-axis direction can be detected.
1 can be calculated.
【００１７】次に、Ｘ軸方向の位置検出原理を以下に説
明する。まず、時間をｔ、容量Ｃに発生する電圧をＶ、
容量Ｃを流れる電流をＩとすると次の微分方程式が成り
立つ。Next, the principle of position detection in the X-axis direction will be described below. First, time is t, voltage generated in the capacitor C is V,
If the current flowing through the capacitor C is I, the following differential equation holds.
【００１８】[0018]
【数５】 (Equation 5)
【００１９】ここでWhere
【００２０】[0020]
【数６】 (Equation 6)
【００２１】なので[0021]
【００２２】[0022]
【数７】 (Equation 7)
【００２３】よって電流Ｉ1とＩ2の和で容量Ｃの大きさ
がわかる。そして、制御部４１４は制御信号４１５で選
択部４０４，４０５の選択を抵抗体Ｓ2，Ｓ3．．．Ｓn
と順次行うが、操作者の指４０１による影響が無い位置
の容量ＣはＣ＝０となり、操作者の指４０１による影響
が最も大きい位置の容量Ｃは最大となる。従って制御部
４１４は、抵抗体Ｓ1からＳnまで検出したそれぞれの抵
抗体での電流Ｉ1とＩ2の和の大きさを比較計算または補
間計算することによって、Ｘ軸方向の操作者の指４０１
の座標位置を求めることができる。Therefore, the magnitude of the capacitance C can be determined from the sum of the currents I1 and I2. The control unit 414 uses the control signal 415 to select the selection units 404 and 405 from the resistors S2, S3. . . Sn
The capacitance C at a position where the influence of the operator's finger 401 is not affected is C = 0, and the capacitance C at a position where the influence of the operator's finger 401 is the largest is maximized. Accordingly, the control unit 414 performs comparison calculation or interpolation calculation on the sum of the currents I1 and I2 in the respective resistors S1 to Sn detected, thereby obtaining the operator's finger 401 in the X-axis direction.
Can be obtained.
【００２４】[0024]
【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、Ｘ軸方向の操作者の指４０１の座標位置
は抵抗体Ｓnの本数の離散値となるため、検出精度をあ
げるために指４０１の大きさに対して十分細かい間隔で
抵抗体４００を配置する必要があるので、抵抗体４００
の本数が多くなり検出に時間がかかるという問題点を有
していた。However, in the above-mentioned conventional configuration, the coordinate position of the operator's finger 401 in the X-axis direction is a discrete value of the number of the resistors Sn, so that the finger 401 is used to increase the detection accuracy. It is necessary to arrange the resistors 400 at sufficiently small intervals with respect to the size of
However, there is a problem in that the number of lines increases and detection takes time.
【００２５】本発明は上記従来の問題点を解決するもの
で、従来に比べて検出時間を大幅に短縮でき、かつ検出
精度も向上できる座標位置入力装置を提供することを目
的とするものである。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a coordinate position input device capable of greatly reducing the detection time and improving the detection accuracy as compared with the conventional one. .
【００２６】[0026]
【課題を解決するための手段】この目的を達成するため
に本発明の座標位置入力装置は、ＸＹ直交座標平面のＸ
軸方向に板状の第１の抵抗体層、Ｙ軸方向に帯状の複数
の第２の抵抗体層を設け、前記Ｘ軸方向の第１の抵抗体
層と前記Ｙ軸方向の第２の抵抗体層との間に絶縁層を設
け、座標位置の検出部を第１、第２の抵抗体層の２層と
なるように構成したものである。In order to achieve this object, a coordinate position input device according to the present invention comprises an X-Y coordinate system.
A plate-shaped first resistor layer is provided in the axial direction, and a plurality of band-shaped second resistor layers are provided in the Y-axis direction. The first resistor layer in the X-axis direction and the second resistor layer in the Y-axis direction are provided. An insulating layer is provided between the first and second resistor layers, and the coordinate position detecting unit is configured to be two layers of a first and a second resistor layer.
【００２７】この本発明によれば、従来に比べて検出時
間を大幅に短縮でき、かつ検出精度も向上できる座標位
置入力装置が得られる。According to the present invention, it is possible to obtain a coordinate position input device capable of greatly reducing the detection time and improving the detection accuracy as compared with the related art.
【００２８】[0028]
【発明の実施の形態】本発明の請求項１に記載の発明
は、方形の１組の向かい合った２辺に設けた帯状電極を
１つの抵抗体で結ぶように配置した板状の第１の抵抗体
層と、前記方形の残りの１組の向かい合った２辺に設け
た帯状電極を結ぶように配置した複数の帯状の第２の抵
抗体層とを、絶縁層を挟んで構成した検出部と、この検
出部の選択部と、前記検出部の駆動部と、前記検出部か
らの電流信号を電圧信号に変換するＩ／Ｖ変換部と、前
記電圧信号をディジタル信号に変換するＡ／Ｄ変換部
と、前記ディジタル信号を計算して座標位置を求める制
御部とを備えた構成としたものであり、第１、第２の抵
抗体層の２本で済むために検出時間を大幅に短くでき、
さらにＸ軸方向、Ｙ軸方向共に座標位置の出力が離散値
とはならないので検出精度の特にＸ軸方向で検出精度を
向上することができるという作用を有する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a first plate-like electrode in which a pair of rectangular strip electrodes provided on two opposite sides are connected by one resistor. A detection unit comprising a resistor layer and a plurality of band-shaped second resistor layers arranged so as to connect the remaining pair of strip electrodes provided on two opposite sides of the square with an insulating layer interposed therebetween. A selector for the detector, a driver for the detector, an I / V converter for converting a current signal from the detector into a voltage signal, and an A / D converter for converting the voltage signal into a digital signal. It is configured to include a conversion unit and a control unit that calculates the digital signal and obtains a coordinate position, and the detection time can be significantly reduced because only two first and second resistor layers are required. Can,
Furthermore, since the output of the coordinate position does not become a discrete value in both the X-axis direction and the Y-axis direction, the detection accuracy, particularly in the X-axis direction, can be improved.
【００２９】請求項２に記載の発明は、方形の１組の向
かい合った２辺に設けた帯状電極を複数の帯状抵抗体で
結ぶように配置した第１の抵抗体層と、前記方形の残り
の１組の向かい合った２辺に設けた帯状電極を複数の帯
状抵抗体で結ぶように配置した第２の抵抗体層とを、絶
縁層を挟んで検出部を構成したものであり、第１、第２
の抵抗体層の２本で済むために検出時間を大幅に短くで
き、さらにＸ軸方向、Ｙ軸方向共に座標位置の出力が離
散値とはならないので検出精度を向上することができる
という作用を有する。The invention according to claim 2 is characterized in that a first resistor layer in which a pair of rectangular strip electrodes provided on two opposite sides is connected by a plurality of strip resistors, And a second resistor layer arranged so that a pair of strip electrodes provided on two opposite sides of the pair are connected by a plurality of strip resistors, and a detection unit is configured with an insulating layer interposed therebetween. , Second
Since only two resistor layers are required, the detection time can be greatly reduced, and the output of the coordinate position does not become a discrete value in the X-axis direction and the Y-axis direction, so that the detection accuracy can be improved. Have.
【００３０】請求項３に記載の発明は、第１、第２の抵
抗体層を構成する帯状抵抗体をそれぞれ上下に蛇行する
ことにより、これら第１、第２の抵抗体層を構成する帯
状抵抗体が交互に表出する構成としたものであり、第
１、第２の抵抗体層の２本で済むために検出時間を大幅
に短くでき、さらにＸ軸方向、Ｙ軸方向共に座標位置の
出力が離散値とはならないので、検出精度を向上するこ
とができ、かつＸ軸方向とＹ軸方向の座標位置の計算が
同一の処理で可能となるという作用を有する。According to a third aspect of the present invention, the belt-shaped resistors constituting the first and second resistor layers are meandering up and down, respectively, thereby forming the belt-shaped resistors constituting the first and second resistor layers. In this configuration, the resistors are alternately exposed, and the detection time can be significantly reduced because only two layers of the first and second resistor layers are required. Further, the coordinate positions in both the X-axis direction and the Y-axis direction are set. Is not a discrete value, the detection accuracy can be improved, and the calculation of the coordinate positions in the X-axis direction and the Y-axis direction can be performed by the same processing.
【００３１】以下、本発明の一実施の形態について図１
を用いて説明する。図１は本発明の座標位置入力装置の
概略を示す構成図であり、同図において、１は平板状の
一枚の抵抗体、２，３は抵抗体１の対向する一対の辺に
設けた電極、４は複数の帯状の抵抗体、５，６は各抵抗
体４の両端の電極、７は抵抗体１と抵抗体４の間の絶縁
層、８は操作者の指、９は回路グラウンド、１０は操作
者の指８によって抵抗体１と回路グラウンド９との間に
見掛け上形成される静電容量、１１は操作者の指８によ
って抵抗体４と回路グラウンド９との間に見掛け上形成
される静電容量、１２，１３は抵抗体１，４の選択部、
１４，１５は抵抗体１，４の駆動部、１６，１７は基準
電圧、１８，１９は電流を電圧に変換するＩ／Ｖ変換
部、２０，２１は電圧をディジタル値に変換するＡ／Ｄ
変換部、２２は制御部、２３は選択部の制御信号、２４
は駆動部の制御信号である。FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a block diagram schematically showing a coordinate position input device according to the present invention. In FIG. 1, reference numeral 1 denotes a flat plate-shaped resistor, and reference numerals 2 and 3 denote a pair of opposing sides of the resistor 1. Electrodes, 4 are a plurality of strip-shaped resistors, 5 and 6 are electrodes at both ends of each resistor 4, 7 is an insulating layer between the resistors 1 and 4, 8 is an operator's finger, and 9 is a circuit ground. , 10 is an apparent capacitance formed between the resistor 1 and the circuit ground 9 by the operator's finger 8, 11 is an apparent capacitance between the resistor 4 and the circuit ground 9 by the operator's finger 8 Capacitances to be formed, 12 and 13 are selection portions of resistors 1 and 4,
Reference numerals 14 and 15 denote drive units for the resistors 1 and 4, reference numerals 16 and 17 denote I / V converters for converting currents to voltages, and reference numerals 20 and 21 denote A / Ds for converting voltages to digital values.
A conversion unit, 22 is a control unit, 23 is a control signal of the selection unit, 24
Is a control signal of the drive unit.
【００３２】いま、Ｘ，Ｙは直交座標平面の軸であり、
説明がしやすいように抵抗体１はＸ軸と平行に、抵抗体
４はＹ軸と平行に配置したものとし、以下の説明では抵
抗体１をＳx、抵抗体４をＳyで行う。ここで、図１から
も分かるように、２層に構成した抵抗体１，４のうち操
作者の指８側の層の抵抗体列Ｓyを複数の帯状の抵抗体
４で構成したため、操作者の指８によって抵抗体列Ｓy
と回路グラウンド９との間及び、抵抗体Ｓxと回路グラ
ウンド９との間にも見掛け上静電容量１０，１１が形成
される。この静電容量１０の大きさをＣx、静電容量１
１の大きさをＣyとする。また、基準電圧１６の大きさ
をＥ1、基準電圧１７の大きさをＥ2とする。X and Y are axes on a rectangular coordinate plane.
For ease of explanation, it is assumed that the resistor 1 is arranged parallel to the X axis and the resistor 4 is arranged parallel to the Y axis. In the following description, the resistor 1 is Sx and the resistor 4 is Sy. Here, as can be seen from FIG. 1, the resistor array Sy of the layer on the finger 8 side of the operator among the resistors 1 and 4 configured in two layers is constituted by a plurality of band-shaped resistors 4. By the finger 8 of the resistor body Sy
Apparent capacitances 10 and 11 are also formed between the circuit ground 9 and the resistor Sx and the circuit ground 9. The magnitude of the capacitance 10 is Cx, and the capacitance is 1
Let the size of 1 be Cy. The magnitude of the reference voltage 16 is E1 and the magnitude of the reference voltage 17 is E2.
【００３３】最初に操作者の指８が図１のように抵抗体
ＳxのＸ軸方向のｘ1：ｘ2となる位置にある場合のＸ軸
方向の位置検出原理を以下に説明する。First, the principle of position detection in the X-axis direction when the operator's finger 8 is at the position of x1: x2 in the X-axis direction of the resistor Sx as shown in FIG. 1 will be described below.
【００３４】まず、抵抗体Ｓxは電極２，３からみて１
本の抵抗とみなせるので、抵抗体Ｓxのｘ1側の抵抗値を
Ｒx1、ｘ2側の抵抗値をＲx2とすると次の関係が成り立
つ。First, the resistance Sx is 1 when viewed from the electrodes 2 and 3.
Since the resistance of the resistor Sx on the x1 side is Rx1 and the resistance on the x2 side of the resistor Sx is Rx2, the following relationship holds.
【００３５】[0035]
【数８】 (Equation 8)
【００３６】そして制御部２２は、制御信号２３で選択
部１２，１３の選択を抵抗体Ｓxとし、制御信号２４で
駆動部１４，１５の設定を基準電圧Ｅ1側とすると、容
量Ｃxの電圧はＥ1となる。この状態で駆動部１４，１５
の設定を基準電圧Ｅ2側に切り替えると、Ｅ1＞Ｅ2の時
は容量Ｃxの電荷が電圧Ｅ2になるまでＲx1，Ｒx2を通し
て放電される。この時Ｒx1を流れる電流をＩx1、Ｒx2を
流れる電流をＩx2とするとThe control unit 22 sets the voltage of the capacitor Cx to be the resistance Sx with the control signal 23 and the setting of the drive units 14 and 15 with the control signal 24 to the reference voltage E1 side. It becomes E1. In this state, the driving units 14 and 15
Is switched to the reference voltage E2 side, when E1> E2, the electric charge of the capacitor Cx is discharged through Rx1 and Rx2 until the electric charge of the capacitor Cx reaches the voltage E2. At this time, if the current flowing through Rx1 is Ix1 and the current flowing through Rx2 is Ix2,
【００３７】[0037]
【数９】 (Equation 9)
【００３８】なので次の関係が成り立つ。Therefore, the following relationship is established.
【００３９】[0039]
【数１０】 (Equation 10)
【００４０】ここで（数８）、（数１０）より次の関係
が成り立つ。Here, the following relationship is established from (Equation 8) and (Equation 10).
【００４１】[0041]
【数１１】 [Equation 11]
【００４２】よって電流Ｉx1とＩx2の比によってＸ軸方
向の操作者の指８の座標位置がわかる。また、Ｅ1＜Ｅ2
の時は容量Ｃxの電荷が電圧Ｅ2になるまでＲx1，Ｒx2を
通して充電されるので、Ｉx1，Ｉx2は方向が逆になり−
Ｉx1，−Ｉx2となるが（数１０）は成り立つので、Ｅ1
＜Ｅ2としてもよい。Thus, the coordinate position of the operator's finger 8 in the X-axis direction can be determined from the ratio between the currents Ix1 and Ix2. Also, E1 <E2
In the case of, the charge of the capacitor Cx is charged through Rx1 and Rx2 until it reaches the voltage E2, so that the directions of Ix1 and Ix2 are reversed and −
Ix1 and -Ix2, but (Equation 10) holds, so E1
<E2 may be set.
【００４３】そして、Ｉx1，Ｉx2はＩ／Ｖ変換部１８，
１９でそれぞれ電圧値に変換し、Ａ／Ｄ変換部２０，２
１でそれぞれディジタル値に変換し、制御部２２へ入力
し、制御部２２でＸ軸方向の操作者の指８の座標位置を
計算する。Then, Ix1 and Ix2 are converted by the I / V converter 18,
At 19, they are converted into voltage values, respectively, and A / D converters 20, 2
In step 1, the digital value is converted into a digital value, and the converted value is input to the control unit 22. The control unit 22 calculates the coordinate position of the operator's finger 8 in the X-axis direction.
【００４４】次に、操作者の指８が図１のように抵抗体
ＳyのＹ軸方向のｙ1：ｙ2となる位置にある場合のＹ軸
方向の位置検出原理を以下に説明する。Next, the principle of position detection in the Y-axis direction when the operator's finger 8 is at the position of y1: y2 in the Y-axis direction of the resistor Sy as shown in FIG. 1 will be described below.
【００４５】まず、抵抗体Ｓyは電極５，６からみて１
本の抵抗とみなせるので、抵抗体Ｓyのｙ1側の抵抗値を
Ｒy1、ｙ2側の抵抗値をＲy2とすると次の関係が成り立
つ。First, the resistance Sy is 1 when viewed from the electrodes 5 and 6.
Since the resistance value of the resistor Sy on the y1 side is Ry1 and the resistance value on the y2 side of the resistor Sy is Ry2, the following relationship is established.
【００４６】[0046]
【数１２】 (Equation 12)
【００４７】そして制御部２２は、制御信号２３で選択
部１２，１３の選択を抵抗体Ｓyとし、制御信号２４で
駆動部１４，１５の設定を基準電圧Ｅ1側とすると、容
量Ｃyの電圧はＥ1となる。この状態で駆動部１４，１５
の設定を基準電圧Ｅ2側に切り替えると、Ｅ1＞Ｅ2の時
は容量Ｃyの電荷が電圧Ｅ2になるまでＲy1，Ｒy2を通し
て放電される。この時Ｒy1を流れる電流をＩy1、Ｒy2を
流れる電流をＩy2とするとWhen the control signal 23 sets the selection of the selection units 12 and 13 to the resistor Sy and the control signal 24 sets the settings of the driving units 14 and 15 to the reference voltage E1 side, the voltage of the capacitance Cy becomes It becomes E1. In this state, the driving units 14 and 15
Is switched to the reference voltage E2 side, when E1> E2, the charge of the capacitor Cy is discharged through Ry1 and Ry2 until the charge of the capacitor Cy reaches the voltage E2. At this time, if the current flowing through Ry1 is Iy1 and the current flowing through Ry2 is Iy2,
【００４８】[0048]
【数１３】 (Equation 13)
【００４９】なので次の関係が成り立つ。Therefore, the following relationship is established.
【００５０】[0050]
【数１４】 [Equation 14]
【００５１】ここで（数１２）、（数１４）より次の関
係が成り立つ。Here, the following relationship is established from (Equation 12) and (Equation 14).
【００５２】[0052]
【数１５】 (Equation 15)
【００５３】よって電流Ｉy1とＩy2の比によってＹ軸方
向の操作者の指８の座標位置がわかる。また、Ｅ1＜Ｅ2
の時は容量Ｃyの電荷が電圧Ｅ2になるまでＲy1，Ｒy2を
通して充電されるので、Ｉy1，Ｉy2は方向が逆になり−
Ｉy1，−Ｉy2となるが（数１４）は成り立つので、Ｅ1
＜Ｅ2としてもよい。Thus, the coordinate position of the operator's finger 8 in the Y-axis direction can be determined from the ratio between the currents Iy1 and Iy2. Also, E1 <E2
In the case of, since the charge of the capacitor Cy is charged through Ry1 and Ry2 until it reaches the voltage E2, the directions of Iy1 and Iy2 are reversed.
Iy1 and -Iy2, but (Equation 14) holds, so E1
<E2 may be set.
【００５４】そして、Ｉy1，Ｉy2はＩ／Ｖ変換部１８，
１９でそれぞれ電圧値に変換し、Ａ／Ｄ変換部２０，２
１でそれぞれディジタル値に変換し、制御部２２へ入力
し、制御部２２でＹ軸方向の操作者の指８の座標位置を
計算する。Then, Iy1 and Iy2 are the I / V converters 18,
At 19, they are converted into voltage values, respectively, and A / D converters 20, 2
The values are converted into digital values by 1 and input to the control unit 22, and the control unit 22 calculates the coordinate position of the operator's finger 8 in the Y-axis direction.
【００５５】以上のように本発明の座標位置入力装置
は、検出における抵抗体１，４の切り替え動作を最低２
回行うだけでよいので、検出時間が短くてすみ、抵抗体
１，４の選択部１２，１３の規模も小さいものでよい。
また、Ｘ軸方向、Ｙ軸方向の両方において、座標位置の
出力が離散値とはならず検出精度も良いものとなる。As described above, the coordinate position input device of the present invention requires at least two switching operations of the resistors 1 and 4 in detection.
Since the detection only needs to be performed twice, the detection time may be short, and the scales of the selection units 12 and 13 of the resistors 1 and 4 may be small.
Further, in both the X-axis direction and the Y-axis direction, the output of the coordinate position does not become a discrete value, and the detection accuracy is good.
【００５６】なお、図２に示した検出部の概略を示す構
成図のように、抵抗体Ｓxを複数の抵抗体１でＳyと同じ
く帯状に形成し、抵抗体列Ｓxとしてもよい。この構成
とした場合、操作者の指８によって抵抗体１，４と回路
グラウンド９との間に形成されるそれぞれの静電容量Ｃ
x，Ｃyが、抵抗体列Ｓxと抵抗体列Ｓyのどちらの側から
も形成されるので、抵抗体列Ｓx側と抵抗体列Ｓy側のど
ちらの側からも座標位置の検出が可能である。また、Ｃ
x，Ｃyの大きさは、操作者の指８のある側の層の方が常
に大きいので、操作者の指８がどちらの側にあるかを判
別する場合に特に有用である。As shown in the schematic diagram of the detection section shown in FIG. 2, the resistor Sx may be formed in a strip shape by a plurality of resistors 1 like Sy to form a resistor row Sx. In the case of this configuration, each capacitance C formed between the resistors 1 and 4 and the circuit ground 9 by the operator's finger 8
Since x and Cy are formed from both sides of the resistor row Sx and the resistor row Sy, the coordinate position can be detected from both the resistor row Sx and the resistor row Sy. . Also, C
Since the size of x and Cy is always larger on the layer on the side where the operator's finger 8 is located, it is particularly useful for determining which side the operator's finger 8 is on.
【００５７】さらに、図３に示した検出部の概略を示す
構成図のように、抵抗体列Ｓxと抵抗体列Ｓyを構成する
複数の抵抗体１，４の交差部において、抵抗体列Ｓxの
層と抵抗体列Ｓyの層の層関係が、隣同士で順次入れ替
わり、交互に表出するように構成してもよい。この構成
とした場合、操作者の指８によって抵抗体１，４と回路
グラウンド９との間に形成されるそれぞれの静電容量Ｃ
x，Ｃyが、抵抗体列Ｓxと抵抗体列Ｓyのどちらの側から
も形成され、かつ大きさも等しくなるので、抵抗体列Ｓ
x側と抵抗体列Ｓy側で座標位置の計算が同一の処理で可
能となる。Further, as shown in the schematic diagram of the detection section shown in FIG. 3, at the intersection of the plurality of resistors 1 and 4 forming the resistor row Sx and the resistor row Sy, the resistor row Sx May be configured so that the layer relationship between the layer of the resistor row and the layer of the resistor row Sy is sequentially exchanged between adjacent layers and alternately expressed. In the case of this configuration, each capacitance C formed between the resistors 1 and 4 and the circuit ground 9 by the operator's finger 8
Since x and Cy are formed from both sides of the resistor row Sx and the resistor row Sy and have the same size, the resistor row S
The calculation of the coordinate position on the x side and the resistor array Sy side can be performed by the same processing.
【００５８】[0058]
【発明の効果】以上のように本発明によれば、座標位置
の検出を短時間で、精度良く行うことができ、回路規模
も小さくてすむ優れた座標位置入力装置を実現できると
いう有利な効果が得られる。As described above, according to the present invention, the coordinate position can be detected accurately in a short time, and an excellent coordinate position input device requiring a small circuit scale can be realized. Is obtained.
【図１】本発明の一実施形態の座標位置入力装置の概略
を示す構成図FIG. 1 is a configuration diagram schematically showing a coordinate position input device according to an embodiment of the present invention.
【図２】本発明の他の実施形態を示す構成図FIG. 2 is a configuration diagram showing another embodiment of the present invention.
【図３】本発明のさらに他の実施形態を示す構成図FIG. 3 is a configuration diagram showing still another embodiment of the present invention.
【図４】従来の座標位置入力装置の概略を示す構成図FIG. 4 is a configuration diagram schematically showing a conventional coordinate position input device.
１ 抵抗体 ２，３ 電極 ４ 抵抗体 ５，６ 電極 ７ 絶縁層 ８ 操作者の指 ９ 回路グラウンド １０，１１ 見掛け上形成される静電容量 １２，１３ 抵抗体の選択部 １４，１５ 抵抗体の駆動部 １６，１７ 基準電圧 １８，１９ Ｉ／Ｖ変換部 ２０，２１ Ａ／Ｄ変換部 ２２ 制御部 ２３ 選択部の制御信号 ２４ 駆動部の制御信号 DESCRIPTION OF SYMBOLS 1 Resistor 2, 3 electrode 4 Resistor 5, 6 electrode 7 Insulating layer 8 Operator's finger 9 Circuit ground 10, 11 Apparently formed capacitance 12, 13 Resistor selection part 14, 15 Driving unit 16, 17 Reference voltage 18, 19 I / V converting unit 20, 21 A / D converting unit 22 Control unit 23 Control signal of selecting unit 24 Control signal of driving unit
Claims (3)
帯状電極を１つの抵抗体で結ぶように配置した板状の第
１の抵抗体層と、前記方形の残りの１組の向かい合った
２辺に設けた帯状電極を結ぶように配置した複数の帯状
の第２の抵抗体層とを、絶縁層を挟んで構成した検出部
と、この検出部の選択部と、前記検出部の駆動部と、前
記検出部からの電流信号を電圧信号に変換するＩ／Ｖ変
換部と、前記電圧信号をディジタル信号に変換するＡ／
Ｄ変換部と、前記ディジタル信号を計算して座標位置を
求める制御部とを備えた座標位置入力装置。1. A plate-like first resistor layer in which a pair of rectangular electrodes provided on two opposite sides of a square are connected by one resistor, and the other pair of the squares facing each other A detection unit configured by interposing an insulating layer with a plurality of band-shaped second resistor layers disposed so as to connect the band-shaped electrodes provided on the two sides; a selection unit of the detection unit; A driving unit, an I / V conversion unit that converts a current signal from the detection unit into a voltage signal, and an A / V conversion unit that converts the voltage signal into a digital signal.
A coordinate position input device comprising: a D conversion unit; and a control unit that calculates the digital signal to obtain a coordinate position.
帯状電極を複数の帯状抵抗体で結ぶように配置した第１
の抵抗体層と、前記方形の残りの１組の向かい合った２
辺に設けた帯状電極を複数の帯状抵抗体で結ぶように配
置した第２の抵抗体層とを、絶縁層を挟んで構成した検
出部と、この検出部の選択部と、前記検出部の駆動部
と、前記検出部からの電流信号を電圧信号に変換するＩ
／Ｖ変換部と、前記電圧信号をディジタル信号に変換す
るＡ／Ｄ変換部と、前記ディジタル信号を計算して座標
位置を求める制御部とで構成した座標位置入力装置。2. A first arrangement in which a pair of rectangular electrodes provided on two opposing sides of a square are connected by a plurality of resistive resistors.
And the remaining pair of opposed squares of said square
A detection unit configured to sandwich a second resistor layer disposed so as to connect the band-shaped electrodes provided on the sides with a plurality of band-shaped resistors with an insulating layer interposed therebetween; a selection unit for the detection unit; A driving unit, and an I / O converter for converting a current signal from the detection unit into a voltage signal.
A coordinate position input device comprising a / V converter, an A / D converter for converting the voltage signal into a digital signal, and a controller for calculating the digital signal to obtain a coordinate position.
抗体をそれぞれ上下に蛇行することにより、これらの第
１、第２の抵抗体層を構成する帯状抵抗体が交互に表出
する構成としたことを特徴とする請求項１記載の座標位
置入力装置。3. The band-shaped resistors constituting the first and second resistor layers are alternately displayed by meandering up and down, respectively, of the band-shaped resistors constituting the first and second resistor layers. 2. A coordinate position input device according to claim 1, wherein the input device outputs the coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22487096A JP3820640B2 (en) | 1996-08-27 | 1996-08-27 | Coordinate position input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22487096A JP3820640B2 (en) | 1996-08-27 | 1996-08-27 | Coordinate position input device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1063403A true JPH1063403A (en) | 1998-03-06 |
| JP3820640B2 JP3820640B2 (en) | 2006-09-13 |
Family
ID=16820466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22487096A Expired - Fee Related JP3820640B2 (en) | 1996-08-27 | 1996-08-27 | Coordinate position input device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3820640B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005529414A (en) * | 2002-06-07 | 2005-09-29 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Input system |
| US8444448B2 (en) | 2009-03-12 | 2013-05-21 | Seiko Epson Corporation | Manufacturing methods of touch panel, display device, and electronic apparatus |
-
1996
- 1996-08-27 JP JP22487096A patent/JP3820640B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005529414A (en) * | 2002-06-07 | 2005-09-29 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Input system |
| US8444448B2 (en) | 2009-03-12 | 2013-05-21 | Seiko Epson Corporation | Manufacturing methods of touch panel, display device, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3820640B2 (en) | 2006-09-13 |
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