JPS5833783A - Tablet digitizer - Google Patents

Tablet digitizer

Info

Publication number
JPS5833783A
JPS5833783A JP56131072A JP13107281A JPS5833783A JP S5833783 A JPS5833783 A JP S5833783A JP 56131072 A JP56131072 A JP 56131072A JP 13107281 A JP13107281 A JP 13107281A JP S5833783 A JPS5833783 A JP S5833783A
Authority
JP
Japan
Prior art keywords
wave
surface acoustic
substrate
piezoelectric element
reflected
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
Application number
JP56131072A
Other languages
Japanese (ja)
Other versions
JPS6130288B2 (en
Inventor
Takaharu Matsumoto
松本 高治
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP56131072A priority Critical patent/JPS5833783A/en
Publication of JPS5833783A publication Critical patent/JPS5833783A/en
Publication of JPS6130288B2 publication Critical patent/JPS6130288B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/043Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves

Abstract

PURPOSE:To simplify the calculation on position of indicating points without being affected by the change in sound velocity or the like, by providing a setting line which reflects a part of a surface elastic wave on a propagation path on a tablet on which the surface elastic wave propagates. CONSTITUTION:When a pulse voltage is applied to a piezoelectric element 3 from a pulse source 4, a longitudinal wave 6 is generated in a wedge 2 with the element 3. A surface acoustic wave 7 is generated at the boundary between a substrate 1 and the wedge 2 through the reception of the longitudinal wave 6. The surface elastic wave 7 propagates around the surface of the substrate 1, and a part of the wave is reflected on the 1st and 2nd setting lines 8 and 8' to produce the 1st and 2nd reflecting waves. A part of the wave 7 is reflected at a pressing point pressed with an indicator 5 to produce the 3rd reflecting wave. The 1st-3rd reflecting waves return on the propagated path where the waves have been propagated are converted into the longitudinal wave 6 at the boundary and received at the piezoelectric element 3.

Description

【発明の詳細な説明】 本発明は、タプレ、トに固定された図面の上を自由に移
動するカーソル等によって、図面の位置の座標値を自動
的に読み取るタプレ、トディジタイザに関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape digitizer that automatically reads the coordinate values of a position on a drawing using a cursor or the like that moves freely over the drawing fixed on the tape.

第1図は、このようなタプレ、トディジタイザの従来例
の原理を説明するための原理説明図であり、図中、1け
例えば板状のガラス等でなる基板、2は例えばアクリル
材料等でなり基板10所定部分に着設されたくさび、5
はくさび20所定部分に着設された圧電素子、4は圧電
素子3へ所定の電圧を印加するパレス電源、5は基板1
の所定部分を押える例えば人間の指や自由に移動するカ
ーソル等でなる指示体、6はくさび1中に生じた縦波、
7は基板1の表面付近を伝播する表面弾性波である。ま
た、elはくさび2中を伝播する縦波6の伝播距離、e
2は基板10表面付近において表面弾性波が発生点から
指示体5による押圧点迄伝播する距離、人は圧電素子5
によって送・受信されるとともに出力Eとして検出され
る出力波形、Tは圧電素子3によって送信された送信波
形が上記押圧点等で反射して戻り再び圧電素子3によっ
て受信波形として受信される迄の時間に相当する遅延時
間である。
FIG. 1 is a principle explanatory diagram for explaining the principle of a conventional example of such a tapelet and digitizer. a wedge attached to a predetermined portion of the substrate 10;
A piezoelectric element is attached to a predetermined portion of the wedge 20, 4 is a pulse power supply that applies a predetermined voltage to the piezoelectric element 3, and 5 is a substrate 1.
6 is a longitudinal wave generated in the wedge 1;
7 is a surface acoustic wave propagating near the surface of the substrate 1. In addition, el is the propagation distance of the longitudinal wave 6 propagating in the wedge 2, e
2 is the distance that surface acoustic waves propagate near the surface of the substrate 10 from the point of generation to the point of pressure by the indicator 5;
T is the output waveform transmitted and received by the piezoelectric element 3 and detected as the output E, and T is the output waveform transmitted by the piezoelectric element 3 until it is reflected at the above-mentioned pressing point etc. and returned and received by the piezoelectric element 3 again as a received waveform. This is the delay time corresponding to the time.

第1図に示す従来例において、パルス電源4から圧電素
子5へ゛所定のパルス電圧が供給されると、該圧電素f
F’sによってくさび2中に縦波6が発生、して基板1
との境界面方向へ伝播する。また、基板1とくさび2の
境界面において上記縦波6を受けて表面弾性波7が発生
し、該表面弾性波7が基板1の表面付近を伝播してゆき
、指示体5で押えられた押圧点で反射して反射波となる
。該反射波は基板10表面付近を再び伝播して戻り、上
記境界面において縦波6へ変換されてのち圧電素子3に
よって受信される。ここで、基板1およびくさび2にお
ける音速を夫々C1,C2とすると、上記遅延時間Tは
下式(1)のようKして求められる。また、該遅延時間
Tは 表面弾性波7が反射する上記押圧点の位置と相関関係管
示すため、該遅延時間T1に測定することにより上記押
圧点に相当する指示体5の位置が求められる。
In the conventional example shown in FIG. 1, when a predetermined pulse voltage is supplied from the pulse power source 4 to the piezoelectric element 5, the piezoelectric element f
A longitudinal wave 6 is generated in the wedge 2 by F's, and the substrate 1
propagates toward the interface with Furthermore, a surface acoustic wave 7 is generated in response to the longitudinal wave 6 at the interface between the substrate 1 and the wedge 2, and the surface acoustic wave 7 propagates near the surface of the substrate 1 and is suppressed by the indicator 5. It is reflected at the pressure point and becomes a reflected wave. The reflected wave propagates again near the surface of the substrate 10 and returns, is converted into a longitudinal wave 6 at the boundary surface, and is then received by the piezoelectric element 3. Here, assuming that the sound speeds in the substrate 1 and the wedge 2 are C1 and C2, respectively, the delay time T is determined by K as shown in the following equation (1). Further, since the delay time T shows a correlation with the position of the pressing point where the surface acoustic wave 7 is reflected, the position of the indicator 5 corresponding to the pressing point can be found by measuring at the delay time T1.

然し乍ら、上記従来例においては音速C1,C2が温度
変化の影響を受は島いために、上述のようにして求めら
れた遅延時間Tが温度変化に伴う誤差を含み易く、結果
的に上述のようKして求められた指示体5の位置が不正
確なものと々るという欠点があった。壇だ、くさび2中
を縦波6が伝播し基板1中を表面弾性波7が伝播すると
いうように、2つの媒質中を表面波が伝播するような構
成であるため、遅延時間TI求める上式(1)の計算も
複雑表ものとなるという欠点があった。
However, in the above-mentioned conventional example, since the sound speeds C1 and C2 are not affected by temperature changes, the delay time T obtained as described above tends to include errors due to temperature changes, and as a result, as described above. There is a drawback that the position of the indicator 5 determined by K may be incorrect. However, since the configuration is such that surface waves propagate in two media, such as a longitudinal wave 6 propagating in the wedge 2 and a surface acoustic wave 7 propagating in the substrate 1, it is difficult to calculate the delay time TI. The calculation of equation (1) also has the drawback of requiring a complicated table.

本発明はかかる欠点に鑑みてkされたものであり、その
目的は、音速変化等の影響を受けること力く且つ指示点
の位置も簡単力計算だけで求められるようhタブレ、ト
ディジタイザを提供することKある。
The present invention has been made in view of these drawbacks, and its purpose is to provide a digitizer that is not affected by changes in the speed of sound, etc., and that allows the position of the pointing point to be determined by simple force calculations. There's K things to do.

以下本発明の実施例について図を用いて詳細に説明する
。第2図は、本発明実施例の原理を説明するための原理
説明図であり、図中、第1図と同一記号は同一意味をも
たせて使用しここでの説明は省略する。また、8.81
は基板1の表面に設けられた幅の狭いテープ若しくはき
す等でカリ通過する表面弾性波の一部を反射させる第1
および第2の設定ライン、eoは表面弾性波の発生点か
ら上記第1設定ライン8まで表面弾性波が伝播するとき
の伝播距離、C3は上記第1設定ライン8から指示体5
によって押圧された押圧点まで表面弾性波が伝播すると
きの伝播距離 ;+4は上記第1設定ライン8から第2
設定ライン81まで表面弾性波が伝播するときの伝播距
離である。Aは圧電素子5によって送・受信されるとと
もに出力Eとして検出され為出力波形、t□+ +3t
 +4は圧電素子3によって送信された送信波が上記第
1設定ライン、押圧点。
Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a principle explanatory diagram for explaining the principle of the embodiment of the present invention. In the figure, the same symbols as in FIG. 1 are used with the same meanings, and the explanation here will be omitted. Also, 8.81
is a first plate that reflects a part of the surface acoustic waves passing through the surface of the substrate 1 with a narrow tape or a scraper provided on the surface of the substrate 1.
and a second setting line, eo is the propagation distance when the surface acoustic wave propagates from the generation point of the surface acoustic wave to the first setting line 8, and C3 is the indicator 5 from the first setting line 8.
The propagation distance when the surface acoustic wave propagates to the pressing point pressed by; +4 is the distance from the first setting line 8 to the second
This is the propagation distance when the surface acoustic wave propagates to the setting line 81. A is transmitted and received by the piezoelectric element 5 and detected as the output E, so the output waveform is t□+ +3t
+4 indicates that the transmission wave transmitted by the piezoelectric element 3 is the first setting line, the pressing point.

第2設定ラインで夫々反射して戻り、再び圧電素子3に
よって受信波として受信される迄の時間に相当する遅延
時間である。
This delay time corresponds to the time it takes for each wave to be reflected back at the second setting line and received by the piezoelectric element 3 as a reception wave again.

上記構成等から々る本発明実施例の動作について以下説
明する。第2図において、パルス電源4から圧電素子3
へ所定のパルス電圧が供給されると、該圧電素子3によ
ってくさび2中に縦波6が発生して基板1との境界面方
向へ伝播する。また、基板1とくさび2の境界面におい
て上記縦波61jI:受けて表面弾性波7が発生する。
The operation of the embodiment of the present invention based on the above configuration etc. will be explained below. In FIG. 2, from the pulse power source 4 to the piezoelectric element 3
When a predetermined pulse voltage is supplied to the wedge 2, a longitudinal wave 6 is generated in the wedge 2 by the piezoelectric element 3 and propagated toward the interface with the substrate 1. Further, the surface acoustic wave 7 is generated by receiving the longitudinal wave 61jI at the interface between the substrate 1 and the wedge 2.

該表面弾性波7は前記従来例の場合と同様にして基板1
0表面付近を伝播してゆくが、第1および第2の設定ラ
イン8,8′を通過する際、該表面弾性波7の一部が夫
々反射して第1および第2の反射波となる。また、該表
面弾性波7は指示体sKよって押圧されている押圧点で
も一部が反射し第5の反射波と々る。
The surface acoustic wave 7 is applied to the substrate 1 in the same manner as in the conventional example.
0 surface, but when passing through the first and second setting lines 8 and 8', a part of the surface acoustic wave 7 is reflected and becomes the first and second reflected waves, respectively. . Also, a part of the surface acoustic wave 7 is reflected at the pressed point pressed by the indicator sK and reaches a fifth reflected wave.

これら第1〜第3の反射波は、基板1の表面付近におい
て上記表面弾性波7が伝播してきた経路を再び伝播して
戻り、上記境界面において縦波6へ変換されてのち圧電
素子3によって受信波として受信される、今、基板1中
およびくさび2中における音速を夫々C1,C2とする
と、遅延時間t。、+3゜C4は夫々下式(2)、 1
3)、 (4)のようにして求められる。
These first to third reflected waves propagate again along the path along which the surface acoustic waves 7 have propagated near the surface of the substrate 1, are converted into longitudinal waves 6 at the boundary surface, and are then converted into longitudinal waves 6 by the piezoelectric element 3. Assuming that the sound velocities in the substrate 1 and the wedge 2, which are received as received waves, are C1 and C2, respectively, the delay time is t. , +3°C4 are respectively expressed by the following formulas (2) and 1
3) and (4).

第(2)〜第(4)式から第(5)式が導かれる上記(
5)式からも明らかなように1第1設定ライン8と上記
押圧点の距離(C3)および第1設定ライン8と第2設
定ライン8′の距離(C4)を定めておくと、第(5)
式の右辺およびt。t C4が一定と彦るため、上記遅
延時間t3が上記音速C1,C2と無関係に求められ、
これら音速の影響を受けるよう々ことがなくなる。また
、該遅延時間t3は表面弾性波が反射する上記押圧点の
位置と相関関係を示すため、核遅延時間t3を測定する
ことにより上記押圧点に和尚する指示体5の位置が上記
音速C工、02に無関係に求められる。
Equation (5) is derived from Equations (2) to (4) above (
5) As is clear from equation 1, if the distance (C3) between the first setting line 8 and the above-mentioned pressing point and the distance (C4) between the first setting line 8 and the second setting line 8' are determined, then 5)
The right side of Eq. and t. Since tC4 is constant, the delay time t3 can be found regardless of the sound speeds C1 and C2,
There is no possibility of being influenced by the speed of sound. Furthermore, since the delay time t3 shows a correlation with the position of the pressure point where the surface acoustic wave is reflected, by measuring the nuclear delay time t3, the position of the indicator 5 that is attached to the pressure point can be determined by the sound velocity C. , 02.

また、第3図は本発明実施例を用いた具体的なタブレッ
トディジタイザの一例を示す構成説明図である。第5図
において、11は例えば板状のガラス等でなる基板、1
2.121は基板11の夫々所定部分に着設されたくさ
び、13.131はくさび12.121に夫々着設され
た圧電素子、14は基板11上忙おいて位置の座標値が
測定される領域である測定範囲、15a、 15b、 
15’a、 15’bは測定範囲14ノ例えば外側近傍
に設けられた幅の狭いテープ若しくはきす等でなる第1
〜第4の設定ライン、16は所定のパルス電圧等を発生
するパルス電源、17はパルス電源16から発せられた
電圧−を受けて圧電素子13.13・へ所定の電圧を供
給する第1のマルチプレクサ、17′は圧電素子13.
131からの電圧を受けて後記アンプ18へ該電圧を供
給する第2のマルチプレクサ、18は第2マルチプレク
サ171がらの出方信号を増幅するアンプ、19はゲー
ト回路、20は第1および第2マルチプレクサ17.1
71、ゲート回路19、および後記カウンタへ夫々所定
の入力を供給するコントローラ、21はクロ、り、22
はクロ、り21からの出力信号を受けるとともにゲート
回路19からのスタート信号およびコントローラ20か
らのリセット信号を受けるカウンタ、23.231はカ
ウンタ22からの出力信号を受けるとともにゲート回路
19かも夫々第1および第2のう、子信号が供給される
第1および第2のう、チ、24は第1および第2のう、
チ23、23’からの出力信号を受けて除算を行表って
位置信号Eを出力する除算器である。
Further, FIG. 3 is a configuration explanatory diagram showing an example of a specific tablet digitizer using an embodiment of the present invention. In FIG. 5, reference numeral 11 denotes a substrate made of, for example, plate-shaped glass;
2.121 are wedges attached to predetermined portions of the substrate 11, 13.131 are piezoelectric elements attached to each of the wedges 12.121, and 14 are placed on the substrate 11 to measure the coordinate values of their positions. measurement ranges, 15a, 15b,
15'a and 15'b are the first tapes or scraps provided near the outside of the measuring range 14, for example.
~4th setting line, 16 is a pulse power source that generates a predetermined pulse voltage, etc.; 17 is a first line that receives the voltage generated from the pulse power source 16 and supplies a predetermined voltage to the piezoelectric element 13; The multiplexer 17' is a piezoelectric element 13.
A second multiplexer receives a voltage from 131 and supplies the voltage to an amplifier 18 described later, 18 is an amplifier that amplifies the output signal from the second multiplexer 171, 19 is a gate circuit, and 20 is a first and second multiplexer. 17.1
71, a controller that supplies predetermined inputs to the gate circuit 19 and the counter described below, 21, 22;
A counter 23 and 231 receives an output signal from the counter 21 and receives a start signal from the gate circuit 19 and a reset signal from the controller 20; and a second cell, the first and second cells to which the child signals are supplied, 24 are the first and second cells,
This is a divider that receives the output signals from the channels 23 and 23', performs division, and outputs a position signal E.

上記構成から々るタブレットディジタイザにおいて九第
1および第2のマルチプレクサ17.171はコントロ
ーラ20によって制御されており、パルス電源16から
の所定の電圧がコントローラ20からの指令に従って圧
電素子13.13’へ供給されるとともに、該圧電−」
〜F、じた出力電圧もコントローラ20からの指令に従
ってアンプ18へ供給される。該アンプ18へ入力され
た圧電素子13.131からの出力信号は増幅されての
ち、コントローラ20によって制御されているゲート回
路19へ入力され、第1および第2のう、チ23.23
’へ夫々供給される第1および第2のう、子信号として
出力される。また、クロ、り21からの出力信号はカウ
ンタ22へ入力され、ゲート回路19から供給されるス
タート信号とコントローラ20から供給されるリセット
信号を受けながら、第1および第2のう、チ23.23
1へ夫々出力信号を供給する。更に1第1および第2の
う、チ23.23’は、カウンタ22からの出力信号を
受けるととも忙夫々上記第1および第2の2.子信号を
受は夫々第1および第2の出力信号を除算器24へ供給
する。咳除算器24において、上記第1および第2の出
力信号の除算が行なわれ、位置信号Eとして出力される
。尚、第5図においては、第1〜第4の設定5 (ン−
15m、 15b、 15’a、 1s’bカ測定範囲
14の外側近傍に設けられているため、校正用の表面弾
性波伝播経路も該測定範囲14内に形成されるが、第1
〜第4の設定ライy 15a、 15b、 15’a、
 15’bの位置を変更し、校正用の表面弾性波伝播経
路を上記測定範囲14の外側に形成させてもよいもとす
る。
In the tablet digitizer having the above configuration, the ninth multiplexer 17.171 is controlled by the controller 20, and a predetermined voltage from the pulse power source 16 is applied to the piezoelectric element 13.13' according to a command from the controller 20. At the same time, the piezoelectric
~F, the output voltage is also supplied to the amplifier 18 according to a command from the controller 20. The output signal from the piezoelectric element 13.131 input to the amplifier 18 is amplified and then input to the gate circuit 19 controlled by the controller 20.
The first and second signals respectively supplied to ' are output as child signals. The output signal from the counter 21 is input to the counter 22, and while receiving the start signal supplied from the gate circuit 19 and the reset signal supplied from the controller 20, the output signal from the first and second counter 23. 23
1 respectively. Furthermore, the first and second channels 23 and 23' receive the output signal from the counter 22 and are busy receiving the output signals from the first and second channels 23 and 23'. The child signal receiver supplies first and second output signals to a divider 24, respectively. In the cough divider 24, the first and second output signals are divided and output as a position signal E. In addition, in FIG. 5, the first to fourth settings 5 (n-
15m, 15b, 15'a, and 1s'b are provided near the outside of the measurement range 14, so the surface acoustic wave propagation path for calibration is also formed within the measurement range 14.
~4th setting lie y 15a, 15b, 15'a,
15'b may be changed to form a surface acoustic wave propagation path for calibration outside the measurement range 14.

以上、詳しく説明したような本発明の実施例によれば、
前記第(5)式からも明らかなように指示体5等の位置
を音速とは関係々〈求めることができるため、前記従来
例の場合のように測定値が温度変化に伴なう謡差を受は
易いというよう々ことはないという利点を有する。また
、前記第(1)式と第(5)式を比較すれば明らか力よ
う忙、指示体5等の位置を求める計算が前記従来の場合
に比して簡単になるという利点も有する。更に1第3図
において、第1〜第4の設定ライン15a、 15b、
 15’a、 15’b・の位置を変更して校正用の表
面弾性波伝播経路を測定範囲14の外側に形成させると
、校正用表面弾性波伝播経路が測定範囲14内に形成さ
れている場合に比して測定値が多重反射の影響を受けに
くく々るという更壜る利点も有する◎
According to the embodiments of the present invention as described above in detail,
As is clear from Equation (5) above, the position of the indicator 5, etc. can be determined regardless of the speed of sound, so that the measured values may differ due to temperature changes, as in the case of the conventional example. It has the advantage that it is not easy to receive. Further, when comparing Equations (1) and (5), it is clear that the calculations for determining the position of the indicator 5 etc. are simpler than in the conventional case. Furthermore, in FIG. 3, first to fourth setting lines 15a, 15b,
When the positions of 15'a and 15'b are changed to form a surface acoustic wave propagation path for calibration outside the measurement range 14, the surface acoustic wave propagation path for calibration is formed within the measurement range 14. It also has the additional advantage that the measured values are less susceptible to the effects of multiple reflections than in the case of

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

第1図は従来のタブレットデジタイザの原理説明図、第
2図は本発明実施例の原理説明図、第3図は本発明忙係
るタプレ、トデジタイザの構成説明図である。 1、11 、、、基板、2.12.121 、、、 (
さび、3.13.131・・・圧電素子、4..16・
・・パルス電源、5・・・指示体、8、8’、 15a
、 15’a、 15b、 15’b−設定点、17.
171 ・・・マルチプレクサ、18・・・アンプ、1
9・・・ゲート回路、20・・・コントローラ、21・
・・クロック、22・・・カウンタ、23、231・・
・う、チ、24・・・除算器。
FIG. 1 is an explanatory diagram of the principle of a conventional tablet digitizer, FIG. 2 is an explanatory diagram of the principle of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of the configuration of a tablet digitizer according to the present invention. 1,11,,,substrate,2.12.121,,,(
Rust, 3.13.131...Piezoelectric element, 4. .. 16.
...Pulse power supply, 5...Indicator, 8, 8', 15a
, 15'a, 15b, 15'b - set point, 17.
171...Multiplexer, 18...Amplifier, 1
9... Gate circuit, 20... Controller, 21.
...Clock, 22...Counter, 23, 231...
・Uh, ji, 24...divider.

Claims (3)

【特許請求の範囲】[Claims] (1)  タプレッ)K固定された図面の上を自由に移
動するカーソル等の指示体を用いるとともに1上記タブ
レ、トの表面付近を伝播する表面弾性波の反射波を利用
して、上記図面の位置の座標値を自動的に読み取るタプ
レ、トディジタイザにおいて、表面弾性波が伝播するタ
プレ、ト上の伝播経路忙上記表面弾性波の一部を反射す
る設定ラインを設けたことを特徴とするタプレ。 トディジタイザ。
(1) Using an indicator such as a cursor that moves freely on the fixed drawing, and using the reflected waves of surface acoustic waves propagating near the surface of the above drawing, A table for automatically reading the coordinate values of a position, a table for surface acoustic waves to propagate in a digitizer, and a table for a table, characterized in that a setting line is provided to reflect a part of the surface acoustic waves above the propagation path on the table. . To digitizer.
(2)  位置の座標値が測定可能な領域である測定範
囲の外側近傍に前記設定ラインが4本設けられてなる特
許請求範囲第(1)項記載のタプレ、トディジタイザ。
(2) The tapelet and digitizer according to claim (1), wherein the four setting lines are provided near the outside of a measurement range in which position coordinate values can be measured.
(3)位置の座標値が測定可能な領域である測定範囲の
外側に校正用表面弾性波伝播経路が形成されるよう表位
置に前記設定ラインが4本設けられてなる特許請求範囲
第(1)項記載のタプレ、トディジタイザ。
(3) The four setting lines are provided at the front position so that a surface acoustic wave propagation path for calibration is formed outside the measurement range where the coordinate values of the position can be measured. Taplet and digitizer described in ).
JP56131072A 1981-08-21 1981-08-21 Tablet digitizer Granted JPS5833783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56131072A JPS5833783A (en) 1981-08-21 1981-08-21 Tablet digitizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56131072A JPS5833783A (en) 1981-08-21 1981-08-21 Tablet digitizer

Publications (2)

Publication Number Publication Date
JPS5833783A true JPS5833783A (en) 1983-02-28
JPS6130288B2 JPS6130288B2 (en) 1986-07-12

Family

ID=15049333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56131072A Granted JPS5833783A (en) 1981-08-21 1981-08-21 Tablet digitizer

Country Status (1)

Country Link
JP (1) JPS5833783A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258972A2 (en) * 1986-06-27 1988-03-09 Canon Kabushiki Kaisha Coordinates input apparatus
US4853494A (en) * 1987-03-20 1989-08-01 Canon Kabushiki Kaisha Information processing apparatus for inputting coordinate data selectively from either the obverse or the reverse surface of an input tablet
US6911973B2 (en) * 2001-07-16 2005-06-28 Fujitsu Limited Touch panel device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258972A2 (en) * 1986-06-27 1988-03-09 Canon Kabushiki Kaisha Coordinates input apparatus
US4853494A (en) * 1987-03-20 1989-08-01 Canon Kabushiki Kaisha Information processing apparatus for inputting coordinate data selectively from either the obverse or the reverse surface of an input tablet
US6911973B2 (en) * 2001-07-16 2005-06-28 Fujitsu Limited Touch panel device

Also Published As

Publication number Publication date
JPS6130288B2 (en) 1986-07-12

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