JPS605324A - Appointed position detecting device - Google Patents

Appointed position detecting device

Info

Publication number
JPS605324A
JPS605324A JP58113204A JP11320483A JPS605324A JP S605324 A JPS605324 A JP S605324A JP 58113204 A JP58113204 A JP 58113204A JP 11320483 A JP11320483 A JP 11320483A JP S605324 A JPS605324 A JP S605324A
Authority
JP
Japan
Prior art keywords
correction
appointing
electrode
instruction
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
Application number
JP58113204A
Other languages
Japanese (ja)
Inventor
Hisashi Yamaguchi
久 山口
Kazuo Yoshikawa
吉川 和生
Toru Asano
徹 浅野
Hideaki Takizawa
滝沢 英明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP58113204A priority Critical patent/JPS605324A/en
Publication of JPS605324A publication Critical patent/JPS605324A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To eliminate errors resulting from the variance of the capacity of an electrostatic capacity detecting type appointed position detecting device, by newly installing a means which automatically corrects the capacity of an electrode at the appointing section. CONSTITUTION:When an electric power supply switch SW1 is turned on, a differentiating pulse P1 is generated and the control circuit of an MPU8 is reset, and then, a changeover switch 15 is set to the output port side. When the contact 3a of an appointing electrode changeover switch 3 is connected with, for instance, a contact 3c to select one of the appointing electrodes of an appointing device PN thereafter, the output of an appointing electrode TCH1 is supplied to an appointment detecting section 1 and a correcting circuit 4. By performing capacity correcting operations by successively turning on the elements S1,S2,- of a switch 5 in the correcting circuit 4 under this condition, a point at which the output level from the appointment detecting section 1 becomes the maximum is searched. The corrected value of a correcting capacitor when the maximum output level is obtained is stored in an address RAM14 corresponding to the appointing electrode at this time.

Description

【発明の詳細な説明】 (1) 発明の技術分野 本発明は位置検出装置に係り、特にマトリックス状に電
極を配設した多数の電極交叉部を持つ指示手段等の特定
の電極交叉部位置を指示した際の位置を正確に検出する
ための指示位置検出装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a position detection device, and particularly to a position detecting device that detects the position of a specific electrode intersection, such as an indicating means having a large number of electrode intersections in which electrodes are arranged in a matrix. The present invention relates to a designated position detection device for accurately detecting a designated position.

(2) 技術の背景 情報の入力手段として電極をマトリックス状に配置した
パネル上の接触部を指示することで情報を入力する指示
装置が広く用いられている。
(2) Background of the technology As a means for inputting information, indicating devices are widely used that input information by indicating contact portions on a panel in which electrodes are arranged in a matrix.

このような指示装置に於いて、指示した位置を検出する
ための指示位置検出装置としては1枚の透明基板上に、
X軸方向に並列的に配設した複数のラインと、これと絶
縁された状態でY軸方向に並列的に配設した複数のライ
ンの交叉部を指示部とした指示装置の上記複数のX軸方
向ライン出力とY軸方向ライン出力をアナログマルチプ
レクサ等の指示電極切換用スイッチに加えて指示した交
叉部の検出信号を取り出すようになされる。検出方法と
しては種々の検出方法が考えられるが指示部分の交叉部
における静電容量変化を検出したものが用いられている
In such an indicating device, the indicated position detecting device for detecting the indicated position is provided on one transparent substrate.
The above-mentioned plurality of The axial line output and the Y-axis line output are added to an indicator electrode switching switch such as an analog multiplexer to extract a detection signal of the indicated intersection. Although various detection methods can be considered, one that detects a change in capacitance at the intersection of the pointing portion is used.

このような指示交叉部の接触状態の変化を検出するため
には上記指示電極切換用スイツチの出力にコンデンサ及
びインダクタシス等からなる並列共振回路を設け、該並
列共振回路の共振峰の位置ズレが指示交叉部をタッチし
たか否かで異なることを用いて検出を行うようにしたも
のがあるが各交叉部での指示電極の固有の電極容量はX
軸またはY軸方向のライン数や長さの違いによってバラ
ツキがあるので、上記並列共振回路の共振周波数が指示
電極によって異なり指示交叉部位置により検出感度が低
下して指示位置検出が困難となるために」二記したX軸
及びY軸ライン出力と接地間にラインの違いによる静電
容量を補正する補正用の容量素子を接続する方法が提案
されている。
In order to detect such a change in the contact state of the indicator intersection, a parallel resonant circuit consisting of a capacitor, an inductor, etc. is provided at the output of the indicator electrode switching switch, and the displacement of the resonance peak of the parallel resonant circuit is detected. There is a device that performs detection using different factors depending on whether or not the indicator intersection is touched, but the specific electrode capacitance of the indicator electrode at each intersection is
Since there are variations due to differences in the number and length of lines in the axis or Y-axis direction, the resonant frequency of the above parallel resonant circuit varies depending on the indicator electrode, and the detection sensitivity decreases depending on the indicator intersection position, making it difficult to detect the indicated position. A method has been proposed in which a correction capacitance element is connected between the X-axis and Y-axis line outputs and the ground as described in 2 above to correct the capacitance due to line differences.

然し1 この方法によれば指示電極が100本あれば1
00本の補正用容量素子を必要としてコストアンプを招
く欠点があった。
However, 1 According to this method, if there are 100 indicator electrodes, 1
This method has the drawback of requiring 0.00 correction capacitance elements, resulting in an increase in cost.

このような欠点を除くために本発明者は以下詳記する指
示位置検出装置を先に提案している。
In order to eliminate such drawbacks, the present inventor has previously proposed a pointing position detection device which will be described in detail below.

(3) 従来技術の問題点 第1図は木発明者が先に提案した指示位置検出装置の系
統図である。
(3) Problems with the Prior Art FIG. 1 is a system diagram of a pointing position detection device previously proposed by the inventor.

同図に於いて、指示装置PNは例えば透明なガラス板上
に透明電極となる複数ラインX1〜X4およびY + 
−Y aを互いに絶縁された形でマトリックス状に配列
し、各交叉部に指示部TCHを構成する。
In the same figure, the indicating device PN includes a plurality of lines X1 to X4 and Y + that serve as transparent electrodes on a transparent glass plate, for example.
-Y a are arranged in a matrix in a mutually insulated manner, and an instruction section TCH is formed at each intersection.

上記指示装置PNのライ゛ンX1〜X4およびY1〜Y
4の出力はアナログマルチプレクサで構成された指示電
極切換用スイッチ3に与えられ。
Lines X1 to X4 and Y1 to Y of the above indicating device PN
The output of 4 is given to an indicator electrode changeover switch 3 composed of an analog multiplexer.

ラインX1〜X a 、 Y + =Y aの内の一本
だけが順次選択されて該指示電極切換スイッチ3の出力
として取り出される。該指示電極切換用スイッチ3の出
力は指示検出部1並びに補正回路4に与えられる。該指
示検出部1はコンデンサCaとコイルLaとを並列接続
して共振回路LCを構成し。
Only one of the lines X1 to X a , Y + =Y a is sequentially selected and taken out as the output of the indicator electrode changeover switch 3 . The output of the indicator electrode changeover switch 3 is given to the indicator detector 1 and the correction circuit 4. The instruction detection section 1 has a capacitor Ca and a coil La connected in parallel to form a resonant circuit LC.

該共振回路LCの一端を接地すると共に他端に抵抗素子
Rを介して発振器OSCが接続されている。
One end of the resonant circuit LC is grounded, and the other end is connected to an oscillator OSC via a resistive element R.

該共振回路LCと抵抗素子Rとの接続交点はコンパレー
タCPの一方の入力に接続され、該コンパレータCPの
他方の入力には基準電圧源BEよりの電圧が与えられて
いる。
A connection intersection between the resonant circuit LC and the resistance element R is connected to one input of a comparator CP, and the other input of the comparator CP is supplied with a voltage from a reference voltage source BE.

該コンパレークCPの出力は平滑回路2の入力に接続さ
れ該平滑回路2の出力端子Tに指示検出電圧を取り出す
The output of the comparator CP is connected to the input of the smoothing circuit 2, and the designated detection voltage is taken out to the output terminal T of the smoothing circuit 2.

補正回路4は補正用インピーダンス素子となる補正用コ
ンデンサC1〜CBの一端を共通に接地し、上記各コン
デンサの他端に例えば8ピントのアナログマルチプレク
サで構成される補正用切換スイッチ5のスイ・ノチ素子
Sr〜Saに直列接続され、これら補正用切換スイッチ
素子とコンデンサ5IC1,52C2・・・5eCeの
直列回路を並列に接続して指示切換スイッチ3の出力に
接続される。
In the correction circuit 4, one end of the correction capacitors C1 to CB, which serve as correction impedance elements, is commonly grounded, and the other end of each of the capacitors is connected to a switch of a correction changeover switch 5 constituted by, for example, an 8-pin analog multiplexer. It is connected in series to the elements Sr to Sa, and a series circuit of these correction changeover switch elements and capacitors 5IC1, 52C2 . . . 5eCe is connected in parallel and connected to the output of the indication changeover switch 3.

上記した補正用コン計ンサC1〜c8の値は例えば第1
図でカンコ内に示した値に選択されている。
The values of the correction counters C1 to c8 described above are, for example, the first
The values shown in brackets are selected in the figure.

補正量rlPr4内には記憶装置6を有する。該記憶5
− 装置内には指示装置PNの各電極容量のバラツキを補正
するために各々の指示電極に接続すべき補正容量値に対
応した内容が上記補正用切換スイッチに対するデコード
信号の形で記憶されている。
A storage device 6 is provided in the correction amount rlPr4. The memory 5
- Contents corresponding to the correction capacitance values to be connected to each indicator electrode in order to correct variations in the capacitance of each electrode of the indicator device PN are stored in the device in the form of a decoded signal for the correction changeover switch. .

また指示部をタッチした時選択信号は該記憶装置6およ
び指示切換用スイッチ3に与えられる。
Further, when the instruction section is touched, a selection signal is given to the storage device 6 and the instruction changeover switch 3.

上記構成で、Y+X+の指示部TCHがタッチされたと
すれば指示電極選択信号が記憶装置6(読出専用(RO
M))に与えられると共に指示切換用スイッチ30所定
スイツチ素子を“オン”とする。
In the above configuration, if the instruction section TCH of Y+X+ is touched, the instruction electrode selection signal is sent to the storage device 6 (read-only (RO)
M)) and turns on a predetermined switch element of the instruction changeover switch 30.

上記記憶装置6に記憶された補正値からYIXlに対応
した補正容量値を読み出して補正用のコンデンサC+−
CeO内の単独またはこれら容量の組合せを選択して補
正用切換スイッチを“オン”にする。第1図では、コン
デンサC2が対応の補正容量であるとしてスイッチ素子
S2を“オン”した状態が示されている。このような構
成にしておけば指示電極ごとに補正用のコンデンサを接
続して置く場合に比べてコンデンサの数を大幅6一 に減らせるため回路を小型化出来るが各装置毎に補正値
を調べて読み出し専用のROM、すなわち記憶装置6に
メモリするために調整工数が多くなり、更に経時的な検
出電極容量変化に対応出来ない等の問題があった。
A correction capacitance value corresponding to YIXl is read out from the correction values stored in the storage device 6, and a correction capacitor C+- is read out.
Select one or a combination of these capacitances in CeO and turn on the correction switch. In FIG. 1, a state is shown in which the switching element S2 is turned on, assuming that the capacitor C2 is the corresponding correction capacitance. With this configuration, the number of capacitors can be significantly reduced to 6-1 compared to the case where a correction capacitor is connected to each indicator electrode, and the circuit can be made smaller. However, it is necessary to check the correction value for each device. Since the data is stored in a read-only ROM, that is, the storage device 6, the number of adjustment steps increases, and there are also problems such as inability to cope with changes in the detection electrode capacitance over time.

(4) 発明の目的 本発明は上記従来の欠点に鑑み、静電容量検出型の指示
位置検出装置において、検出すべき指示部の電極の容量
のバラツキをなくすために自動的に補正を行うようにし
て補正の調整に多くの時間を必要とせず補正値の経時変
化にも対応出来る指示位置検出装置を提供することを目
的とするものである。
(4) Purpose of the Invention In view of the above-mentioned conventional drawbacks, the present invention provides a capacitance detection type pointing position detection device that automatically performs correction in order to eliminate variations in the capacitance of the electrode of the pointing section to be detected. It is an object of the present invention to provide a designated position detection device that does not require much time for correction adjustment and can cope with changes in correction values over time.

(5) 発明の構成 上記目的は本発明によれば複数の指示部を有する指示手
段と、該指示手段の指示部操作にもとづくインピーダン
ス変化を検出する指示検出手段と。
(5) Structure of the Invention According to the present invention, the above-mentioned objects include an indicating means having a plurality of indicating sections, and an instruction detecting means for detecting an impedance change based on an operation of the indicating section of the indicating means.

上記指示手段の指示部間のインピーダンスの違いを補正
するための複数の補正用インピーダンス素子を有する補
正手段と、上記指示電極のインピーダンスの違いに対応
した補正値を順次検索する検索手段と、該補正値を上記
補正手段内の補正用インピーダンス素子を選択するデー
タに変換する変換手段と、上記指示電極に対応した補正
用のデータを記憶する記憶手段を具備し、該記憶手段に
補正用データを記憶させる操作後に上記記憶手段のデー
タに応じて上記補正用インピーダンス素子を上記指示検
出手段に選択的に接続してなることを特徴とする指示位
置検出装置を提供することで達成される。
a correction means having a plurality of correction impedance elements for correcting the difference in impedance between the indicating parts of the instruction means; a search means for sequentially searching for a correction value corresponding to the difference in impedance of the indicator electrode; A conversion means for converting the value into data for selecting a correction impedance element in the correction means, and a storage means for storing correction data corresponding to the indicator electrode, and storing the correction data in the storage means. This is achieved by providing a pointing position detection device characterized in that the correction impedance element is selectively connected to the pointing detection means in accordance with the data in the storage means after the operation is performed.

(6) 発明の実施例 以下9本発明の一実施例を図面によって詳述する。(6) Examples of the invention Hereinafter, nine embodiments of the present invention will be described in detail with reference to the drawings.

第2図は本発明の指示位置検出装置の系統図である。FIG. 2 is a system diagram of the indicated position detection device of the present invention.

なお、第1図と同一部分には同一符号を付して重複説明
を省略する。
Note that the same parts as in FIG. 1 are given the same reference numerals, and redundant explanation will be omitted.

′第2図に於いて、プラグACは交流電源に接続され、
電源スィッチSWIを介して整流回路7に接続され、該
整流回路7の出力はコンデンサC。
'In Figure 2, the plug AC is connected to the AC power source,
It is connected to a rectifier circuit 7 via a power switch SWI, and the output of the rectifier circuit 7 is connected to a capacitor C.

と抵抗素子Roよりなる微分回路DBを通じてバッフア
ゲ−1・回路Gによって単発パルスP+を得て、該パル
スはマイクロコンピュータ8(以下MPUと記す)内の
制御回路をリセットさせる。微分回路DBのコンデンサ
Coと並列に接続されたスイッチSW2は電源スィッチ
SW+の投入時以外に本発明の補正値更新を行うための
マニアル用スイッチである。
A single pulse P+ is obtained by the buffer 1/circuit G through the differential circuit DB consisting of the resistor Ro and the resistor Ro, and this pulse resets the control circuit in the microcomputer 8 (hereinafter referred to as MPU). A switch SW2 connected in parallel with the capacitor Co of the differentiating circuit DB is a manual switch for updating the correction value of the present invention other than when the power switch SW+ is turned on.

MPU8の制御信号はパスラインを通じて出力ボート9
−切換スイッチ15を介して補正回路4を制御する。指
示検出部1のアナログ出力はアナログ−デジタル変換回
路12でデジタル変換されて入力ボート13を介してM
PU8. ランダムアクセスメモリ14 (以下RAM
と記す)並びに指示電極切換用スイッチ3に与えられる
。11はストローブ信号発生回路であり発振器OSCの
発振周波数と同期がとれるようにアナログ−デジタル変
換回路12をコントロールしている。
The control signal of MPU8 is sent to the output port 9 through the pass line.
- controlling the correction circuit 4 via the changeover switch 15; The analog output of the instruction detection section 1 is converted into digital data by an analog-to-digital conversion circuit 12 and sent to M via an input port 13.
PU8. Random access memory 14 (hereinafter referred to as RAM)
) and the indicator electrode changeover switch 3. Reference numeral 11 denotes a strobe signal generation circuit, which controls the analog-to-digital conversion circuit 12 so as to be synchronized with the oscillation frequency of the oscillator OSC.

上記した構成に於ける本発明の指示位置検出装置の動作
を第3図のフローチャートと共に説明ず一〇− る。
The operation of the indicated position detection device of the present invention in the above configuration will not be explained with reference to the flowchart of FIG.

本発明の指示位置検出装置をスタート17 (第3図参
照)させるためには商用交流電源に交流プラグACを挿
入して電源スィッチSW+を“オン”状態とすれば整流
回路7で整流、平滑された直流電源の出力+5■で立ち
上がる。この立ち上がり部を微分回路DBに通して微分
パルスP+を得てM、P、U8の制御回路をリセットさ
せる。このリセット操作に基づいて切換スイッチ15を
出力ボート側に設定する。次に指示装置PHの指示電極
の1つを選択18(第3図参!!@)する。第2図では
指示装置の指示電極はTCH+ 、 TCH2、TCH
3,TCH4として示されている。
To start the indicated position detection device 17 (see Fig. 3) of the present invention, insert the AC plug AC into the commercial AC power supply and turn the power switch SW+ to the "ON" state. It starts up with the output of the DC power supply +5■. This rising portion is passed through a differentiation circuit DB to obtain a differentiation pulse P+, which resets the control circuits M, P, and U8. Based on this reset operation, the changeover switch 15 is set to the output boat side. Next, one of the indicator electrodes of the indicator PH is selected 18 (see Figure 3!!@). In Figure 2, the indicating electrodes of the indicating device are TCH+, TCH2, TCH
3, designated as TCH4.

すなわち、上記指示電極T CH+〜TCHaの1つを
選択するには指示電極切換スイッチ3の接点3aを接点
3bに接続させることで指示電極TCH+の出力を指示
検出部1並に補正回路4に与える。この状態で補正回路
4内の補正用切換スイッチ5のスイッチ素子Sl、32
,33.S4を順次“オン”させるような駆動データを
MPTJ810− →出力ボート9−切換スイッチ15を介して与えて補正
容量値切換19 (第3図参照)がなされる。
That is, to select one of the indicator electrodes TCH+ to TCHa, the output of the indicator electrode TCH+ is applied to the indicator detector 1 as well as the correction circuit 4 by connecting the contact 3a of the indicator electrode changeover switch 3 to the contact 3b. . In this state, the switch elements Sl, 32 of the correction changeover switch 5 in the correction circuit 4
, 33. The correction capacitance value switching 19 (see FIG. 3) is performed by applying drive data for sequentially turning on S4 through the MPTJ810-→output port 9-changeover switch 15.

このときの指示検出部1よりの平滑回路2で平滑された
アナログ直流信号はアナログ−デジタル変換回路12→
入カボート13→MPU8に与えられ指示検出部1から
の出力レベルが最大値をとるときの補正用コンデンサ0
1〜c4の値を検索する。上述の最大値検出はMPUB
内で行なわれ。
At this time, the analog DC signal smoothed by the smoothing circuit 2 from the instruction detection section 1 is converted to the analog-digital conversion circuit 12→
Input port 13→Correction capacitor 0 when the output level from the instruction detection unit 1 takes the maximum value given to the MPU 8
Search for values 1 to c4. The maximum value detection mentioned above is MPUB
It is done inside.

出力レベルが発振器O8Cの発振周波数と同期がとれて
いるようにストローブ信号発生回路11によりアナログ
−デジタル変換回路12をコントロールし、最大出力レ
ベルが得られれば20(第3図参照)ここで得られた補
正用コンデンサの補正値はこのときの指示電極(上記の
例では指示部TCH,)に対応するアドレスをRAM1
4に収納21 (第3図参照)する。最大出力レベルが
得られなければ補正容量値切換を引き続いて行なう。
The analog-to-digital conversion circuit 12 is controlled by the strobe signal generation circuit 11 so that the output level is synchronized with the oscillation frequency of the oscillator O8C, and if the maximum output level is obtained, 20 (see Figure 3) is obtained here. For the correction value of the correction capacitor, the address corresponding to the indicator electrode (indicator TCH in the above example) is stored in RAM1.
4 (see Figure 3). If the maximum output level is not obtained, correction capacitance value switching is performed successively.

次に指示電極切換スイッチ3の接点3aを接点3Cに接
続し、上記と同様に補正値をRAM14に収納する。こ
のように指示電極をT CH3〜TCH4と次々と切換
えて、その都度上述の動作を繰り返し、指示装置PN内
のすべての指示電極TCH+〜T CHaの補正値をR
AM14に格納し。
Next, the contact 3a of the indicator electrode changeover switch 3 is connected to the contact 3C, and the correction value is stored in the RAM 14 in the same manner as above. In this way, the indicator electrodes are switched from TCH3 to TCH4 one after another, and the above-mentioned operation is repeated each time, so that the correction values of all indicator electrodes TCH+ to TCHa in the indicator device PN are
Stored in AM14.

全指示電極の切換が終了22(第3図参照)したら切換
スイッチ15をRAM14側に切り換えて補正値の初期
設定が終了し通常ルーチン23 (第3図参照)に入る
。通常ルーチンは第1図で説明したと同様の過程でRA
M14にメモリされた補正値に従って補正回路4内のス
イッチ素子81〜S4の1つまたは複数個を“オン”状
態として補正用コンデンサを共振回路L Cに接続する
When switching of all indicator electrodes is completed 22 (see FIG. 3), the selector switch 15 is switched to the RAM 14 side, the initial setting of the correction value is completed, and the normal routine 23 (see FIG. 3) is entered. The normal routine is to perform RA in the same process as explained in Figure 1.
According to the correction value stored in M14, one or more of the switch elements 81 to S4 in the correction circuit 4 is turned on, and the correction capacitor is connected to the resonant circuit LC.

上記実施例では電源用スイッチS W +の投入時に補
正値の検索を行ったが、マニュアルスイッチSW2を押
せばパルスP1がMPU8に入力されて補正値の更新が
可能となる。
In the above embodiment, the correction value is searched when the power switch SW+ is turned on, but if the manual switch SW2 is pressed, the pulse P1 is input to the MPU 8, and the correction value can be updated.

また上記マニュアルスイッチS W 2にタイマー等を
連動させて所定の時間毎に補正値のりフレッシュを行う
ようにしてもよい。
Further, the manual switch SW2 may be linked with a timer or the like to refresh the correction value at predetermined intervals.

(7) 発明の効果 以上、詳細に説明したように1本発明の指示位置検出装
置によれば従来のように指示装置部分の大きさの異なる
機器毎に記憶装置(ROM)の内容を調整する必要がな
く、且つ使用条件や環境の変動に対応して補正値を変更
出来るので高い信頼性を持った補正を行うことが可能と
なる特徴を有する。
(7) Effects of the Invention As explained in detail above, according to the pointing position detection device of the present invention, the contents of the storage device (ROM) can be adjusted for each device having a different size of the pointing device portion, unlike the conventional method. It is not necessary and the correction value can be changed in response to changes in usage conditions and environment, so it has the feature of making it possible to perform correction with high reliability.

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

第1図は従来の指示位置検出装置の系統図、第2図は本
発明の指示位置検出装置の系統図、第3図は第2図に示
す指示位置検出装置の動作を説明するためのフローチャ
ートである。 ■・・・指示検出部、 2・・・平滑回路。 3・・・指示電極切換スイッチ、 4・・・補正回路、
 5・・・補正用切換スイッチ。 6・・・記憶装置、 7・・・整流回路。 8・・・MPU、 9・・・出力ポート。 11・・・ストローブ信号発生回路。 12・・・アナログ−デジタル変換回路。 13・・・入力ボート、 14・・・RAM15・・・
切換スイッチ =13−
Fig. 1 is a system diagram of a conventional indicated position detection device, Fig. 2 is a system diagram of a indicated position detection device of the present invention, and Fig. 3 is a flowchart for explaining the operation of the indicated position detection device shown in Fig. 2. It is. ■...Indication detection section, 2...Smoothing circuit. 3... Indicator electrode changeover switch, 4... Correction circuit,
5... Correction changeover switch. 6... Storage device, 7... Rectifier circuit. 8...MPU, 9...Output port. 11... Strobe signal generation circuit. 12...Analog-digital conversion circuit. 13...Input boat, 14...RAM15...
Changeover switch = 13-

Claims (1)

【特許請求の範囲】 複数の指示部を有する指示手段と、該指示手段の指示部
操作にもとづくインピーダンス変化を検出する指示検出
手段と、上記指示手段の指示部間のインピーダンスの違
いを補正するための複数の補正用インピーダンス素子を
有する補正手段と。 上記指示部間のインピーダンスの違いに対応した補正値
を順次検索する検索手段と、該補正値を上記補正手段内
の補正用インピーダンス素子を選択するデータに変換す
る変換手段と、上記指示部に対応した補正用のデータを
記憶する記憶手段を具備し、該記憶手段に補正用データ
を記憶させる操作後に上記記憶手段のデータに応じて上
記補正用インピーダンス素子を上記指示検出手段に選択
的に接続してなることを特徴とする指示位置検出装置。
[Scope of Claims] An instruction means having a plurality of instruction sections, an instruction detection means for detecting an impedance change based on an operation of the instruction section of the instruction means, and a method for correcting a difference in impedance between the instruction sections of the instruction means. a correction means having a plurality of correction impedance elements; a search means for sequentially searching for correction values corresponding to the difference in impedance between the instruction sections; a conversion means for converting the correction values into data for selecting a correction impedance element in the correction section; and a conversion section corresponding to the instruction section. the correction impedance element is selectively connected to the instruction detection means according to the data in the storage means after the operation of storing the correction data in the storage means; A pointing position detection device characterized by:
JP58113204A 1983-06-23 1983-06-23 Appointed position detecting device Pending JPS605324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58113204A JPS605324A (en) 1983-06-23 1983-06-23 Appointed position detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58113204A JPS605324A (en) 1983-06-23 1983-06-23 Appointed position detecting device

Publications (1)

Publication Number Publication Date
JPS605324A true JPS605324A (en) 1985-01-11

Family

ID=14606190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58113204A Pending JPS605324A (en) 1983-06-23 1983-06-23 Appointed position detecting device

Country Status (1)

Country Link
JP (1) JPS605324A (en)

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WO2013069289A1 (en) * 2011-11-11 2013-05-16 パナソニック株式会社 Touch-panel device
WO2013069290A1 (en) * 2011-11-11 2013-05-16 パナソニック株式会社 Touch-panel device
CN103150072A (en) * 2012-10-02 2013-06-12 友达光电股份有限公司 Touch device and touch method thereof
JP2018110041A (en) * 2006-05-02 2018-07-12 アップル インコーポレイテッド Multipoint touch surface controller

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018110041A (en) * 2006-05-02 2018-07-12 アップル インコーポレイテッド Multipoint touch surface controller
US10915207B2 (en) 2006-05-02 2021-02-09 Apple Inc. Multipoint touch surface controller
WO2013069289A1 (en) * 2011-11-11 2013-05-16 パナソニック株式会社 Touch-panel device
WO2013069290A1 (en) * 2011-11-11 2013-05-16 パナソニック株式会社 Touch-panel device
JP5273328B1 (en) * 2011-11-11 2013-08-28 パナソニック株式会社 Touch panel device
JP5327408B1 (en) * 2011-11-11 2013-10-30 パナソニック株式会社 Touch panel device
JP2014052997A (en) * 2011-11-11 2014-03-20 Panasonic Corp Touch panel device
US9001080B2 (en) 2011-11-11 2015-04-07 Panasonic Intellectual Property Management Co., Ltd. Touch-panel device
CN103150072A (en) * 2012-10-02 2013-06-12 友达光电股份有限公司 Touch device and touch method thereof

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