JP3170415B2 - Electrostatic coupling input device - Google Patents

Electrostatic coupling input device

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JP3170415B2
JP3170415B2 JP10855394A JP10855394A JP3170415B2 JP 3170415 B2 JP3170415 B2 JP 3170415B2 JP 10855394 A JP10855394 A JP 10855394A JP 10855394 A JP10855394 A JP 10855394A JP 3170415 B2 JP3170415 B2 JP 3170415B2
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detection
signal
axis
pointing device
pen
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JPH07319612A (en
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治 岸田
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シャープ株式会社
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【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、デジタイザおよびタブレットなどのコンピュータ入力装置のうち静電結合方式の静電結合入力装置に関する。 The present invention relates to a capacitive coupling input device of an electrostatic coupling system of the computer input device such as a digitizer and a tablet.

【0002】 [0002]

【従来の技術】従来、センスボード上のX軸方向およびY軸方向に上下に対向するように発信用の検出電極列を配し、このセンスボード上を自由に動かすことのできる指示具としてのペン内に受信器を設けている。 Conventionally, arranged detection electrodes train for transmitting so as to face vertically in the X axis direction and the Y-axis direction on the sense board, as a pointing device that can be moved on this sense board freely It is provided a receiver in the pen. この場合の入力座標検出は、センスボード上の検出電極からパルス信号をX軸方向またはY軸方向に順次1列づつ放出して電極列の一方向から順にパルスを加えて行き、このパルスをペン内の受信器と静電結合させ、どの検出電極の検出パルスと結合したかを判別することによりペンの指示位置を検出する。 Input coordinate detection in this case is gradually added pulses sequentially to the pulse signal from the detection electrodes on the sense board from one direction sequentially one row at a time release to the electrode array in the X-axis or Y-axis direction, the pen this pulse receiver and is electrostatically bonded inner, detecting the indication position of the pen by determining whether it has bound to the detection pulses which detection electrodes. これをX軸およびY軸の両軸方向について行うことによりセンスボード上のペンの指示位置を判別することができる。 This can determine the pointing position of the pen on sensing board by performing for both axial direction of the X-axis and Y-axis. 即ち、電極列から発信されるパルスをペン内に設けられた受信器と静電結合した検出電極によりペンが指示したX軸,Y軸それぞれの位置を検出するのである。 Ie, X-axis pen instructed by the detection electrode and the pulses originating from the electrode array bound receiver and the electrostatic provided in the pen, it is to detect the Y-axis each position.

【0003】また、センスボード上のX軸方向およびY [0003] In addition, X-axis direction and Y on the sense board
軸方向に上下に対向するように受信用の検出電極列を配し、このセンスボード上を自由に動かすことができる指示具としてのペン内に発信器を設けている。 Arranged detection electrode array for reception so as to face in the axial direction up and down, a transmitter is provided in the pen as a pointing device that can be moved on this sense board freely. この場合の入力座標検出は、ペン内の発信器から検出パルスを発信して、センスボード上のペンの指示位置にある検出電極と静電結合させる。 The input coordinate detection in this case, by transmitting a detection pulse from the transmitter in the pen, the detection electrode and is electrostatically bound at the position indicated by the pen on sensing board. このセンスボード上の検出電極は1 Detection electrodes on the sense board 1
列づつスキャンを行い、どの検出電極と検出パルスが結合したかを判別することによりペンの指示位置を検出する。 It performed column by one scan, detecting the indication position of the pen by determining what the detection electrode and the detection pulses are coupled. これをX軸およびY軸の両軸について行うことによりセンスボード上のペンの指示位置を判別することができる。 This can determine the pointing position of the pen on sensing board by performing the both axes of X-axis and Y-axis.

【0004】 [0004]

【発明が解決しようとする課題】しかし、上記従来の静電結合入力装置では、電極列を1本づつ順にパルス印加して行くため、センスボードの面積が大きくなったり、 [SUMMARY OF THE INVENTION However, the above-described conventional electrostatic coupling the input device, to go to pulse application the electrode array in one by one in order, or the area of ​​the sense board is increased,
高精度検出のため電極間ピッチを狭くしたりして電極列の総数が増えてくると、すべてをスキャンするのに時間がかかり検出速度が低下するという欠点があった。 The total number of narrowed or to the electrode column electrode pitch for high-precision detection became more crowded, the detection rate takes a long time to scan all had the disadvantage of lowering. また、これに対応するため、電極数を減らす目的で、電極間隔を広くすると検出精度が落ち、また、電極列の中間にペンがくると結合電圧が低下するためパルス電圧を大きくしなければならず、電極間隔を広げることには問題が多い。 In order to cope with this, in order to reduce the number of electrodes, it has fallen and the detection accuracy to increase the electrode spacing, also necessary to increase the pulse voltage for intermediate and coupling the voltage pen comes electrode column is reduced not, it to is problematic to widen the electrode spacing.

【0005】また、デジタイザやタブレットなどの入力時において、ペンに入力消去など2つ以上の機能を持たせるためにはペン機能の切り替えを行わなければならず、従来はこれをコンピュータなどでソフトで切り替えており、とても煩わしく、入力時の障害になっていた。 Further, at the time of input, such as a digitizer or a tablet, in order to provide an input erase such as two or more functions in the pen must perform switching of pen functions, which conventionally a soft like a computer switching and, very cumbersome, it had become an obstacle at the time of input.

【0006】本発明は、上記従来の問題を解決するもので、電極数が増えても位置検出精度や検出速度の低下を防止でき、また、入力効率よく複数機能を持たせることができる静電結合入力装置を提供することを目的とする。 [0006] The present invention is intended to solve the aforementioned conventional problems, even increasing the number of electrodes can be prevented the deterioration of the position detection accuracy and detection speed, also, electrostatic which can have an input efficiently plurality of functions and to provide a coupling input device.

【0007】 [0007]

【課題を解決するための手段】本発明の静電結合入力装置は、センスボード上のX軸方向およびY軸方向に上下に対向するように発信用検出電極列を設け、該センスボード上を自由に移動可能な指示具内に受信器を設け、入力座標検出時に該センスボード上の発信用検出電極から信号を検出電極に順次放出し、この信号を静電結合により該指示具の受信器で受信させ、この受信信号から該指示具の指示位置を検出する静電結合入力装置において、 Capacitive coupling input device of the present invention According to an aspect of the outgoing detection electrode array so as to face vertically in the X axis direction and the Y-axis direction on the sense board provided on said sense Board freely receiver provided in a movable pointing device, a signal from the transmitter for the detection electrodes on the sense board sequentially emitted to the detection electrodes on input coordinate detection, the receiver of the pointing device by electrostatic coupling the signal in is received, the electrostatic coupling input device for detecting a pointing position of the pointing device from the received signal,
該センスボードの検出領域を多分割した分割検出領域と、 波形、周波数、波高値のいずれかの異なる鋸歯状波 A split detection regions multi-divided detection area of the sense board, sawtooth waveform different frequency, the one of the peak value
検出信号として該分割検出領域毎の発信用検出電極列に印加する手段とを有するものであり、そのことにより、上記目的が達成される。 Those having a means for applying to the outgoing detection electrode array of the split detection each region as a detection signal, by the above-described object is achieved.

【0008】また、本発明の静電結合入力装置は、センスボード上のX軸方向およびY軸方向に上下に対向するように受信用検出電極列を設け、該センスボード上を自由に移動可能な指示具内に発信器を設け、入力座標検出時に該指示具内の発信器から信号を放出し、該センスボード上の受信用検出電極列に静電結合により該放出信号を結合させて該指示具の指示位置を検出する静電結合入力装置において、該指示具ごとに、波形、周波数、波高 Further, capacitive coupling input device of the present invention, the detection electrode array for receiving so as to face vertically in the X axis direction and the Y-axis direction on the sense board provided, freely movable on said sense Board the transmitter is provided in the Do pointing device emits a signal from the transmitter within the pointing device when the input coordinate detection, the by joining said discharging signal by capacitive coupling to the receiving detection electrode array on the sense board in capacitive coupling input device for detecting a pointing position of the pointing device, each said pointing device, waveform, frequency, wave height
値のいずれかの異なる鋸歯状波を検出信号として該指示具内の発信器から放出する手段が設けられているもので Those means for releasing from the transmitter within the pointing device is provided either different sawtooth wave value as a detection signal
あり、そのことにより、上記目的が達成される。 There, by the above-described object is achieved.

【0009】 [0009]

【作用】上記構成により、センスボード上の検出領域を多分割し、入力座標検出時にセンスボード上の多分割領域の各検出電極から、波形の異なる信号、周波数の異なる信号、および波高値の異なる信号のうちいずれかを発信し、この信号を静電結合により指示具内の受信器で受信し、この受信信号を用いて指示具の位置を検出する。 [Action] With the above configuration, the detection region is multi-divided on the sense board, different from each detection electrode of the multi-divided region on the sense board on input coordinate detection, different signals, different signal frequencies of waveforms, and the peak value It transmits either one of the signal, receives the signal at a receiver in pointing device by capacitive coupling, to detect the position of the pointing device by using the received signal.
このとき、静電結合により指示具と結合した波形がセンスボード上のどの領域から放出された信号であるかは、 At this time, whether the waveform combined with pointing device by capacitive coupling a signal emitted from any area on the sensing board,
波形の異なる信号、周波数の異なる信号、および波高値の異なる信号のうちいずれかであり容易に識別できるため、センスボード上のそれぞれの領域内で同時に走査が可能で、従来のようにX軸およびY軸のすべての検出電極列を1ラインづつ順次印加するのに比べて、分割領域数だけ高速にスキャンが行え、位置検出精度や検出速度は向上する。 Signals with different waveforms, since it is either easily distinguished among the different signals of different signals, and peak value of the frequency, can be simultaneously scanned in the respective regions on the sense boards, X-axis and in a conventional manner all detection electrode row in the Y axis as compared to sequentially applied one by one line, high speed scanning by dividing the number of areas is performed, the position detection accuracy and detection speed is improved. また、センスボード上に設けられた送信用検出電極列に印加する信号に、分割領域ごとに、例えば極性の異なる異なった波形の鋸歯状波を用いれば、静電結合による結合波形は鋸歯状波の方向に強くピークが出るため極性が容易に確実に判別でき、この極性からどの分割領域からの検出パネルかを簡単な回路で判別可能となる。 Further, the signal applied to the transmission detection electrode arrays provided on the sense board, for each divided area, for example, the use of the sawtooth wave of a different waveform different polarity, is coupled waveform by electrostatic coupling sawtooth strongly possible polar easily and reliably determine because peaks are seen in the direction, thereby enabling discrimination by a simple circuit or detection panel from which the divided regions from the polarity.

【0010】また、入力座標検出時には、指示具内の発信器から、指示具ごとに波形の異なる信号、周波数の異なる信号、および波高値の異なる信号のうちいずれかを発信し、センスボード上の検出電極列で静電結合による信号を受信し、この受信信号を用いて指示具の指示位置を検出するので、どの指示具からの検出信号かを識別することが容易に可能となり、複数の指示具を同時使用可能となる。 [0010] On input coordinates detected from the transmitter in the pointing device, signals having different waveforms for each pointing device, signals of different frequencies, and transmits one of the signals of different peak value, on the sense board receiving the signal by the capacitive coupling with the detection electrode column, and detects a pointed position of the pointing device by using the received signal, to identify whether the detection signal from which the pointing device becomes easily, a plurality of instruction immediately it becomes possible to simultaneously use. また、指示具内に設けられた発信器からの信号に指示具ごとにそれぞれ、例えば極性の異なる異なった波形の鋸歯状波を用いれば、静電結合による結合波形は鋸歯状波の極性のある方向に強くピークが現れ、どの指示具からの信号であるかを簡単な回路で識別できるため、同時に複数本の指示具を用いることができ、その結果、複数本の指示具を、例えば筆記用ペン、消去(消しゴム)用ペン、赤色筆記用ペンなど、1本ごとにそれぞれの機能をもたせることが可能となって、従来のコンピュータのプログラムからメニューなどで切り換えていた手間が省け、入力時に煩わしさが無くなって効率良く入力することができるようになる。 Further, each for each pointing device a signal from the transmitter provided in the pointing device, for example, the use of the sawtooth wave of a different waveform different polarity, is coupled wave by capacitive coupling with polar sawtooth appeared stronger peak in the direction, it is possible to identify whether the signal from which the pointing device with a simple circuit, it is possible to use a plurality of pointing device at the same time, as a result, a plurality of pointing device, for example for writing pen, erasure (eraser) for pens, etc. red writing pen, it is possible to have the respective functions for each one, eliminates the need to have switched from the program of the conventional computer menus, etc., bothersome on input it becomes possible to efficiently input lost is.

【0011】 [0011]

【実施例】以下、本発明の実施例について説明する。 EXAMPLES Hereinafter, Examples of the present invention will be described.

【0012】図1は本発明の一実施例を示す静電結合入力装置のブロック図である。 [0012] Figure 1 is a block diagram of an electrostatic coupling input apparatus according to an embodiment of the present invention. 図1において、センスボード1上のX軸方向およびY軸方向に上下に対向するように発信用検出電極列であるX軸検出電極2とY軸検出電極3が設けられている。 In Figure 1, X-axis detection electrode 2 and the Y-axis sensing electrode 3 is provided as a transmitter for the detection electrode array so as to face vertically in the X axis direction and the Y-axis direction on the sense board 1. これらX軸検出電極2とY軸検出電極3の検出領域をそれぞれ2分割して、X軸分割検出領域2a,2bとY軸分割検出領域3a,3bとして、検出速度を向上させるためにそれぞれの領域にそれぞれピーク極性の異なる異なった波形の鋸歯状波を発信させる。 The detection region of the X-axis sensing electrodes 2 and Y-axis sensing electrode 3 is divided into two, respectively, X-axis split detection regions 2a, 2b and Y-axis split detection region 3a, as 3b, respectively in order to improve the detection speed respectively in the region to place a sawtooth wave of a different waveform different peak polarity. Y軸検出電極切り替え器4はY軸分割検出領域3aにあるY軸検出電極3を切り替え、Y軸検出電極切り替え器5はY軸分割検出領域3bにあるY軸検出電極3を切り替える。 Y-axis detection electrode switching unit 4 switches the Y-axis sensing electrodes 3 in the Y-axis split detection regions 3a, Y-axis detection electrode switching unit 5 switches the Y-axis sensing electrodes 3 in the Y-axis split detection region 3b. また、X軸検出電極切り替え器6はX Further, the X-axis detection electrode switching device 6 X
軸分割検出領域2aにあるX軸検出電極2を切り替え、 Switching the X-axis detection electrode 2 in the axial split detection region 2a,
X軸検出電極切り替え器7はX軸分割検出領域2bにあるX軸検出電極2を切り替える。 X-axis detection electrode switch 7 switches the X-axis detection electrodes 2 in the X-axis split detection region 2b.

【0013】また、発信器8は、互いに極性の異なる鋸歯状波を発生させる鋸歯状波発生器9,10に接続され、これら鋸歯状波発生器9,10はそれぞれXY切り替え器11,12にそれぞれ接続されている。 Further, transmitter 8 is connected to the sawtooth generator 9 which generates a sawtooth wave different polarities, these sawtooth generator 9 and 10 to the XY switch 11 and 12 They are respectively connected. このXY The XY
切り替え器11はY軸検出電極切り替え器4とX軸検出電極切り替え器7に接続され、また、XY切り替え器1 Switch 11 is connected to the Y-axis detection electrode switching unit 4 and the X-axis detection electrode switch 7, also, XY switch 1
2はY軸検出電極切り替え器5とX軸検出電極切り替え器6に接続されている。 2 is connected to the Y-axis detection electrode switching unit 5 and the X-axis detection electrode switching device 6.

【0014】さらに、このセンスボード1上を自由に動かすことができる位置指示具としてのペン13内には受信器が設けられている。 Furthermore, the receiver is provided in the pen 13 as a position indicator device which can be moved over the sensing board 1 freely. このペン13の受信器はピーク極性検出器14に接続され、ピーク極性検出器14は位置検出器15に接続されている。 Receiver of the pen 13 is connected to a peak polarity detector 14, the peak polarity detector 14 is connected to the position detector 15.

【0015】図2は図1の静電結合入力装置における鋸歯状波発生回路9,10の回路図である。 [0015] FIG. 2 is a circuit diagram of the sawtooth wave generating circuit 9 and 10 of the electrostatic coupling input device of FIG. 図2において、オペアンプ16の+入力端子は接地され、その−入力端子はコンデンサ17を介してその出力端子に接続されるとともに、オペアンプ18の+入力端子に接続されている。 2, the + input terminal of operational amplifier 16 is grounded, its - input terminal is connected to the output terminal via a capacitor 17, is connected to the + input terminal of the operational amplifier 18. このオペアンプ18の−入力端子はコンデンサ19を介してその出力端子に接続されている。 Of the operational amplifier 18 - input terminal is connected to the output terminal via a capacitor 19.

【0016】上記構成により、入力座標検出は、センスボード1上の検出電極からパルス信号を発信し、この信号の静電結合によりペン4の受信器で受信させることによりペン位置を検出する。 [0016] With this configuration, the input coordinates detected, transmits a pulse signal from the detection electrodes on the sense board 1, for detecting the pen position by receiving at a receiver of the pen 4 by electrostatic coupling of the signal. このとき、発信器8で作られた基準パルスをもとに、鋸歯状波発生器9,10で正極および負極方向のピークを持った図3に示す鋸歯状波A,Bを作る。 At this time, based on the reference pulse made of oscillator 8, the sawtooth wave A illustrated in FIG. 3 having a positive electrode and the peak of the negative direction in the sawtooth wave generator 9 and 10, make B. それぞれの信号A,BをXY軸切替器1 Each signal A, XY axis switching circuit 1 to B
1,12それぞれにより、時分割でX軸およびY軸の検出信号とする。 The 1,12 respectively, in time division as a detection signal of the X-axis and Y-axis. センスボード1はX軸方向およびY軸方向にY軸分割検出領域3a,3bおよびX軸分割検出領域2a,2bにそれぞれ2分割されており、X軸方向またはY軸方向について分割領域の片側から同時に正極および負極方向のピークを持った鋸歯状波信号A,Bをそれぞれの分割領域の検出電極2,3に信号を印加していく。 Sense board 1 is the X-axis direction and the Y-axis direction to the Y-axis split detection regions 3a, 3b and the X-axis split detection regions 2a, 2b are divided into two respectively, the X-axis or Y-axis direction from one side of the divided regions continue to apply positive and sawtooth wave signal a having a peak in the negative direction, the signal to the detection electrodes 2 and 3 of each of the divided regions B simultaneously. X軸方向またはY軸方向のスキャン終了後、残った軸方向についても同様に同時に正極方向および負極方向のピークを持った鋸歯状波信号A,Bの印加を行う。 X-axis or Y-axis direction after the scanning is completed, the remaining Similarly for axial simultaneously positive direction and sawtooth signal A having the peak of the negative electrode direction, the application of B performed.

【0017】一方、ペン13でセンスボード1上の1点を指示すると、ペン13内の受信器とセンスボード1上の検出電極2,3が静電結合により結合するが、結合により信号の低周波成分は除去され高周波成分のみが伝搬される。 Meanwhile, when the user instructs a point on the sense board 1 with a pen 13, but the detection electrodes 2 and 3 on the receiver and sense board 1 in the pen 13 is coupled by electrostatic coupling, the low signal by coupling frequency component only high frequency components are removed are propagated. その結果、鋸歯状波信号A,Bの急峻な部分が高レベルに結合し、緩慢な部分は結合が低レベルの静電結合波形信号A',B'になる。 As a result, the sawtooth wave signal A, the steep part of the B is coupled to a high level, slow portion binds is electrostatic coupling waveform signal A of the low-level ', B'. このため、ピーク極性検出器14により極性判定比較を行うことによって、どちらの分割領域をペン13が指示しているかが容易に確実に判別できる。 Therefore, by performing polarity determination comparison by the peak polarity detector 14, which of the divided areas or the pen 13 is instructed it can be easily and reliably determined. 図3の静電結合波形信号A'は正極性の鋸歯状波信号Aの静電結合波形を示し、静電結合波形信号B'は正極性の鋸歯状波信号Bの静電結合波形を示している。 Figure 3 of the electrostatic coupling waveform signal A 'indicates the capacitive coupling waveform of the positive polarity of the sawtooth wave signal A, the electrostatic binding waveform signal B' represents a capacitive coupling waveform of the positive polarity sawtooth signal B ing. どちらの領域かを元に位置検出器15によりペン13の位置を検出することができ、本実施例の場合は2分割しているのでスキャン時間を1/2に短縮することができる。 The position detector 15 based on either area can detect the position of the pen 13, in the present embodiment can shorten the scan time because it divided into 1/2.

【0018】したがって、従来、検出電極に1ラインづつパルスを印加することによりスキャンしていたものを検出電極列を複数のグループとし、グループ内で順に他のグループと同時に同一方向に検出パルスの印加を行う。 [0018] Thus, the application of conventional detection electrode array what was scanned by applying a line by line pulse to the detection electrode and a plurality of groups, detecting pulses in the same direction at the same time as other groups in the order in the group I do. このとき、受信器と静電結合した信号が、どのグループからの信号であるかを、信号が静電結合した後、識別しやすい形態とすることにより、同時に複数のグループの検出電極列に平行して検出パルスを印加でき、検出速度を向上することができる。 At this time, parallel or receiver and electrostatically bound signal is a signal from any group, after the signal is bound electrostatically, by an identification form easy, the detection electrode line of the plurality of groups at the same time to be applied to the detection pulses, it is possible to improve the detection speed. この静電結合入力装置の検出に用いる検出パルスの形態は各グループごとに同時に放出しても静電結合による結合波形を簡単な回路で判別しやすくするため、急峻な部分と緩暖な部分のある鋸歯状波を用いる。 Detection pulse used for detection of the capacitive coupling input device form for ease of discrimination by a simple circuit coupled waveform due also electrostatic coupling by releasing at the same time for each group, the steep portion and Yurudan portion using certain sawtooth wave.

【0019】なお、本実施例では検出領域を2分割したが、複数に分割することができ、検出領域を複数に分割した場合、スキャン時間を複数分の1に短縮することができる。 [0019] Incidentally, although divided into two detection areas in this embodiment, it can be divided into a plurality, if obtained by dividing the detection area into a plurality, it is possible to shorten the scan time to 1 multiple minute. また、2つの分割領域内のスキャン方法については、図4に示す平行スキャン、図5に示す対向スキャン、図6に示す放射スキャンなどが考えられる。 As for the scanning method in the two divided regions, parallel scanning shown in FIG. 4, the opposite scanning shown in FIG. 5, like the radiation scanning shown in FIG. 6 is considered. さらに、本実施例では示さなかったが、X軸とY軸を分割領域としX軸とY軸を同時に、それぞれ極性の異なる鋸歯状波でスキャンする方法も考えられる。 Furthermore, although not shown in the present embodiment, X-axis and Y-axis the divided region and at the same time the X-axis and Y-axis, a method of scanning saw-tooth wave having different polarities are also contemplated. これらの場合、 In these cases,
隣り合う、または上下の検出電極に同時に極性の異なるパルスを印加すると静電結合による検出信号が打ち消し合うため、信号の印加時間をずらすなどの対策が必要となる。 Adjacent, or to the upper and lower detection signals by electrostatic coupling is applied simultaneously with different polarities pulse to the detection electrodes are canceled, it is necessary to measures such as shifting the application time of the signals.

【0020】図7は本発明の他の実施例を示す静電結合入力装置のブロック図である。 [0020] FIG. 7 is a block diagram of an electrostatic coupling input system according to still another embodiment of the present invention. 図7において、発信器2 7, the transmitter 2
1は、正極性の鋸歯状波を出力する鋸歯状波発生器22 1 is sawtooth outputs a positive polarity sawtooth wave generator 22
を介して位置指示具としてのペン23に接続され、また、発信器24は、負極性の鋸歯状波を出力する鋸歯状波発生器25を介して位置指示具としてのペン26に接続されている。 It is connected to the pen 23 as a position indicator device via also oscillator 24 is connected to the pen 26 as a position indicator device via a sawtooth wave generator 25 for outputting a negative sawtooth wave there. このペン23,26には発信器が内臓されており、センスボード27上をそれぞれ自由に動かすことができるように構成されている。 This pen 23, 26 and transmitter is built, and is configured to be able to move the upper sense board 27 freely respectively.

【0021】このセンスボード27上のX軸方向およびY軸方向に上下に対向するように発信用検出電極列であるX軸検出電極28とY軸検出電極29がX軸方向およびY軸方向それぞれに一定間隔で設けられている。 [0021] X-axis X-axis detection electrodes 28 and the Y-axis sensing electrodes 29 in the direction and the Y-axis direction is a call origination detecting electrode array so as to face the upper and lower X-axis direction and the Y-axis direction on the sense board 27 They are provided at regular intervals. Y軸検出電極切り替え器30はY軸検出電極29を切り替え、X軸検出電極切り替え器31はX軸検出電極28を切り替える。 Y-axis detection electrode switching unit 30 switches the Y-axis sensing electrodes 29, X-axis detection electrode switching unit 31 switches the X-axis detection electrodes 28. これらY軸検出電極切り替え器30とX軸検出電極切り替え器31はXY切り替え器32に接続され、このXY切り替え器32はピーク極性検出器33を介して位置検出器34に接続され、位置検出器34からデータ出力される。 These Y-axis detection electrode switching unit 30 and the X-axis detection electrode switch 31 is connected to the XY switch 32, the XY switch 32 is connected to the position detector 34 through the peak polarity detector 33, the position detector 34 is data output from.

【0022】上記構成により、入力座標検出は、ペン2 [0022] With this configuration, the input coordinate detection pen 2
3,26内の発信器から信号を放出し、センスボード2 Releasing a signal from the transmitter in the 3, 26, a sense board 2
7上の検出電極列に静電結合による信号によりペン2 Pen 2 by the signal by capacitive coupling to the detection electrode array on 7
3,26の指示位置を検出する。 To detect the indication position of 3, 26. このとき、2本のペン23,26内の発信器にそれぞれ極性の異なる異なった波形の鋸歯状波信号を用いることにより複数のペン2 In this case, a plurality of pen 2 by using a sawtooth wave signal of two different different waveforms respectively polarity to the transmitter in the pen 23, 26
3,26を区別して同時に用いることができる。 It can be used at the same time to distinguish the 3, 26.

【0023】これらペン23,26からの検出パルスは静電結合によりセンスボード27上に構成された検出電極28,29と静電結合により結合する。 The detection pulse from these pens 23, 26 are coupled by electrostatic coupling and the detection electrodes 28 and 29 are configured on the sensing board 27 by capacitive coupling. 結合された波形は鋸歯状波信号の急峻な部分が高レベルに結合し、緩慢な部分は結合が低レベルになるため、ピーク極性検出器33により極性判定を行うことにより、ペン23,2 Because the combined waveform is steep portion of the sawtooth signal is coupled to a high level, slow portion coupling is low, by performing polarity determination by the peak polarity detector 33, a pen 23,2
6のうちどちらのペンで指示しているかを容易に確実に判定することができる。 Whether the instructed in either the pen out of 6 it can be easily reliably determined. 続いて、位置検出器34によりペン23,26の指示する座標をそれぞれ検出する。 Subsequently, respectively detect the coordinates instructed by the pen 23, 26 by the position detector 34. 例えば、ペン23で筆記、ペン26で消去など、ペンによって意味付けを行うことによりペン入力を簡素化することができる。 For example, writing with the pen 23, such as erase pen 26, it is possible to simplify the pen input by performing meaning by the pen.

【0024】したがって、複数のペンを同時に使用し、 [0024] Thus, using multiple of the pen at the same time,
ペンにそれぞれの役割をもたせることでペン機能をコンピュータ上からソフトにより切り替えなくてもよくなる。 Made may not be switched by software the pen function from the computer by to have their respective roles to the pen. この方法は、ペン内の発信器からの信号をペンにより種々異なる波形とすることにより、どのペンが用いられたかを識別できるようにしている。 This method is as a signal from the transmitter in the pen by a different waveform with the pen, can identify which of the pen was used. このペン内の発信器から発信する検出パルスは、極性の異なる異なった波形の鋸歯状波を用いることにより、静電結合による結合波形がどのペンからのものか、簡単な回路で識別しやすくしている。 Detection pulse originating from the transmitter in the pen by using a sawtooth wave of a different waveform different polarity, or those from binding waveform which pen due to electrostatic coupling, easily identified by a simple circuit ing.

【0025】なお、ペン23,26に電源および鋸歯状発生器を内臓させることにより、ペンのコードレス化も可能である。 It should be noted, by visceral power and serrated generator pen 23 and 26, it is also possible cordless pen. また、1本のペンの内部に発信器および鋸歯状波発生器を内臓し、手元スイッチで、筆記や消去などの機能を切り換えるようにしたものも考えられる。 Further, the transmitter and the sawtooth generator in the interior of one of the pens were built, with hand switch, also conceivable that the switch the functions such as writing and erasing.

【0026】なお、上記各実施例では、検出信号として極性の異なる異なった波形の鋸歯状波を用いたが、それ以外の波形の異なる信号、周波数の異なる信号、および波高値の異なる信号などを用いることができる。 [0026] In each of the above embodiments has used the sawtooth waves having different polarities different waveforms as a detection signal, different signals other waveform signals of different frequencies, and different signals and the peak value it can be used.

【0027】 [0027]

【発明の効果】以上のように本発明によれば、センスボード上のX軸およびY軸の検出電極を従来は一本一本順次信号を印加して検出信号としていたものを、分割領域どうしは同時に信号印加を行うことができるため、従来の検出速度に比べて分割領域倍だけ高速化することができる。 According to the present invention as described above, according to the present invention, what was the detection electrodes of the X-axis and Y-axis on the sense board conventionally as a detection signal by applying a sequential signals one by one, divided regions each other because that can perform signal simultaneously applied, it is possible to speed by dividing regions doubled as compared with the conventional detection speed. このため、センスボードが大型化または高精度化のために検出電極数が増加しても、検出電極数の増加による検出精度や検出速度の低下を防止することができる。 Therefore, even if the sense board increases the detection electrode number for size or higher accuracy, it is possible to prevent deterioration in detection accuracy and detection speed due to the increase in the detection electrode number. また、検出パルスに鋸歯状波を用いることにより、 Further, by using the sawtooth waveform to the detection pulse,
静電結合波形を簡単な回路で容易に確実に判別することができる。 It can be easily and reliably determine the capacitive coupling waveform with a simple circuit. さらに、複数の指示具を同時に使用しても、 Furthermore, the use multiple pointing device at the same time,
指示具からのパルスの静電結合波形が異なっているため、どの指示具が使用されているかを容易に識別できて、入力効率よく複数機能を持たせることができる。 Since the pulse electrostatic coupling waveform from the pointing device are different, what pointing device is being used can be easily identified, it can have an input efficiently plurality of functions.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施例を示す静電結合入力装置のブロック図である。 1 is a block diagram of an electrostatic coupling input apparatus according to an embodiment of the present invention.

【図2】図1の静電結合入力装置における鋸歯状波発生回路9,10の回路図である。 It is a circuit diagram of the sawtooth wave generating circuit 9 and 10 of the electrostatic coupling the input device of FIG. 1. FIG.

【図3】図1の静電結合入力装置における検出パルスとその静電結合信号の波形図である。 3 is a waveform diagram of a detection pulse and its electrostatic coupling signal in the electrostatic coupling input device of FIG.

【図4】図1の2つの分割領域内のスキャン方法として検出電極の平行スキャンを示す図である。 4 is a diagram showing a parallel scan of the detection electrodes as two scanning methods in the divided region of Fig.

【図5】図1の2つの分割領域内のスキャン方法として検出電極の対向スキャンを示す図である。 5 is a diagram showing the opposing scan detection electrodes as the scan method in the two divided regions in FIG.

【図6】図1の2つの分割領域内のスキャン方法として検出電極の放射スキャンを示す図である。 6 is a diagram showing an emission scan of the detection electrodes as a method for scanning two divided region of Fig.

【図7】本発明の他の実施例を示す静電結合入力装置のブロック図である。 7 is a block diagram of an electrostatic coupling input system according to still another embodiment of the present invention.

【符号の説明】 1,27 センスボード 2,28 X軸検出電極 2a,2b X軸分割領域 3,29 Y軸検出電極 3a,3b Y軸分割領域 4,5,6,7,30,31 検出電極切り替え器 8,21,24 発信器 9,10,22,25 鋸歯状波発生器 11,12,32 XY切り替え器 13,23,26 ペン(指示具) 14,33 ピーク極性検出器 15,34 位置検出器 [Description of Reference Numerals] 1, 27 sense the board 2, 28 X-axis detection electrodes 2a, 2b X axis divided regions 3,29 Y-axis sensing electrodes 3a, 3b Y axis divided regions 4,5,6,7,30,31 detection electrode switch 8,21,24 transmitter 9,10,22,25 sawtooth generator 11,12,32 XY switch 13,23,26 pen (pointing device) 14 and 33 the peak polarity detector 15, 34 position detector

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 センスボード上のX軸方向およびY軸方向に上下に対向するように発信用検出電極列を設け、該センスボード上を自由に移動可能な指示具内に受信器を設け、入力座標検出時に該センスボード上の発信用検出電極から信号を検出電極に順次放出し、この信号を静電結合により該指示具の受信器で受信させ、この受信信号から該指示具の指示位置を検出する静電結合入力装置において、 該センスボードの検出領域を多分割した分割検出領域と、 波形、周波数、波高値のいずれかの異なる鋸歯状波 1. A outgoing detection electrode array so as to face provided above and below the X-axis direction and the Y-axis direction on the sense board, a receiver provided on the sense board into the freely movable pointing device, the signal from the transmitter for the detection electrodes on the sense board sequentially emitted to the detection electrodes on input coordinate detection, the signal is received at a receiver of the pointing device by capacitive coupling to the designation position of the pointing device from the received signal in capacitive coupling input device for detecting a split detection regions multi-divided detection area of the sense board, sawtooth waveform different frequency, the one of the peak value
    検出信号として該分割検出領域毎の発信用検出電極列に印加する手段とを有する静電結合入力装置。 Capacitive coupling input device having means for applying to the outgoing detection electrode array of the split detection each region as a detection signal.
  2. 【請求項2】 センスボード上のX軸方向およびY軸方向に上下に対向するように受信用検出電極列を設け、該センスボード上を自由に移動可能な指示具内に発信器を設け、入力座標検出時に該指示具内の発信器から信号を放出し、該センスボード上の受信用検出電極列に静電結合により該放出信号を結合させて該指示具の指示位置を検出する静電結合入力装置において、 該指示具ごとに、波形、周波数、波高値のいずれかの異 Wherein providing the detecting electrode array for receiving so as to face vertically in the X axis direction and the Y-axis direction on the sense board, a transmitter provided on the sense board into the freely movable pointing device, releasing a signal from the transmitter within the pointing device when the input coordinates detected by joining said discharging signal by capacitive coupling to the receiving detection electrode array on the sense board electrostatic detecting the indication position of the pointing device in coupling the input device, each said pointing device, waveform, frequency, any of the different peak value
    なる鋸歯状波を検出信号として該指示具内の発信器から放出する手段が設けられている静電結合入力装置。 Sawtooth wave detection signal as an electrostatic coupling input device means for releasing is provided from the transmitter in the pointing device comprising.
JP10855394A 1994-05-23 1994-05-23 Electrostatic coupling input device Expired - Lifetime JP3170415B2 (en)

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