GB1440130A - Position indicating system - Google Patents
Position indicating systemInfo
- Publication number
- GB1440130A GB1440130A GB4609573A GB4609573A GB1440130A GB 1440130 A GB1440130 A GB 1440130A GB 4609573 A GB4609573 A GB 4609573A GB 4609573 A GB4609573 A GB 4609573A GB 1440130 A GB1440130 A GB 1440130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conductors
- block
- pulses
- circuit
- sequentially
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0441—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
1440130 Position indicating systems INTERNATIONAL BUSINESS MACHINES CORP 3 Oct 1973 [20 Nov 1972] 46095/73 Heading G1N The position of a pick-up probe 8 adjacent to a surface of a dielectric material I below which surface is a plurality of evenly spaced parallel conductors e.g. 21, 22, 23 is determined by sequentially energizing the conductors with pulses, and comparing the ratios of the amplitudes of the picked up induced signals. The tablet of dielectric material I may be overlaid with drawing paper 12 and the probe 8 in the form of a ball-point pen with a metallic tip 11. Since there is a different capacitance between the conductors 21, 22, 23 &c. and tip 11 different induced charges are detected by tip 11 when the conductors are sequentially pulsed. The amplitudes V 1 , V 2 , V 3 of the voltages induced by pulsing three adjacent conductors are measured and since these are related to the distances d 1 , d 2 , d 3 the distance X from the tip 11 from the nearest conductor is calculated by the following equation: - If a further set of orthogonal conductors are provided then by repeating the process the two co-ordinates of the probe can be determined and the signals representative thereof fed to a computer. To increase the speed of the determination the conductors of each co-ordinate are divided into blocks and the conductors are first scanned to determine which block the probe lies within and then the conductors of the respective block is scanned to determine the position of the probe in the block. Block counting The conductors of each respective block e.g. 1 l ....1 m , 2 l ....2 m &c. are connected together and via leads 54 1 , 54 2 to a pulse distribution circuit 53 under the control of block scanning pulses from controller 6. A 20 KHz pulse generator 52 supplies via scanning controller 51, pulses to pulse distribution circuit 53. Thus pulses are applied sequentially one at a time to lines 54 1 , 54 2 &c. so that the conductors of the respective block are energized. The output of stylus 8 is fed via switching circuit 26 to stores 28a, 28b, 28c connected in series, switching circuit 26 being controlled by timing pulses at 27 to store sequentially the stylus signals in the memory circuits 28a, b, c at a speed synchronized with the pulses applied to the conductors. Block detecting circuit 33 including three level detectors connected to a respective memory circuit and an OR gate, Fig. 7 (not shown), examines whether or not a signal level higher than a predetermined value is stored in the memory circuits. The absence of such a signal causes a negative output to be applied to controller 6 to cause a block counter (not shown) to step one position and cause the next block of conductors to be scanned. If such a signal is present the block counter is stopped, its contents transferred to block number register 36 and a line scanning pulse instead of a block scanning pulse generated on line 37. Line scanning Pulse distribution circuit 36 controlled by scanning controller 51 feeds the conductors, arranged so that all the first conductors 1 1 , 2 1 ,... of the blocks are connected, all the second conductors 1 2 ,2 2 .... are connected together &c. sequentially with 20 KHz pulses. The stylus output is again fed sequentially to the memory circuits and line detecting circuit 38, comprising two level detectors and an AND gate connected to calculating circuit 30, Fig. 7 (not shown), compares the memory circuits outputs. When the level of the signal in store 28b is not greater than both signals in stores 28a, 28c circuit 38 generates a negative output and controller 6 causes a line counter (not shown) to step one position and the next conductor of the blocks to be scanned. If the signal level of store 28b is greater than both the adjacent stores controller 6 causes the line counter to be stopped and its contents to be transferred to line number register 40. Calculating circuit then provides an output in accordance with the equation using voltages V 1 , V2, V3 stored in the memory circuits which is converted to a digital form 31 and applied to co-ordinate register 32. The final co-ordinate form is obtained from the three registers. If the stylus is nearest the first or last conductor of a block then the block has to be scanned a second time to obtain an output. After completion of the cycle it is repeated for the orthogonal array of conductors.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11564872A JPS5319380B2 (en) | 1972-11-20 | 1972-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1440130A true GB1440130A (en) | 1976-06-23 |
Family
ID=14667825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4609573A Expired GB1440130A (en) | 1972-11-20 | 1973-10-03 | Position indicating system |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5319380B2 (en) |
CA (1) | CA1025124A (en) |
FR (1) | FR2207313B1 (en) |
GB (1) | GB1440130A (en) |
IT (1) | IT1001558B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2155641A (en) * | 1984-02-29 | 1985-09-25 | Pentel Kk | Pattern input apparatus |
US5194699A (en) * | 1990-04-03 | 1993-03-16 | Summagraphics Corporation | Digitizer tablet with fixed incremented grid portions |
WO2008085719A2 (en) | 2007-01-03 | 2008-07-17 | Apple Inc. | Simultaneous sensing arrangement |
CN101639750A (en) * | 2008-08-01 | 2010-02-03 | 索尼株式会社 | Touch panel and method for operating the same, and electronic apparatus and method for operating the same |
EP2503432A1 (en) * | 2009-10-09 | 2012-09-26 | Egalax_Empia Technology Inc. | Method and device for dual-differential sensing |
US9606663B2 (en) | 2008-09-10 | 2017-03-28 | Apple Inc. | Multiple stimulation phase determination |
US9715306B2 (en) | 2008-09-10 | 2017-07-25 | Apple Inc. | Single chip multi-stimulus sensor controller |
US9990084B2 (en) | 2007-06-13 | 2018-06-05 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US10042476B2 (en) | 2008-09-10 | 2018-08-07 | Apple Inc. | Channel scan architecture for multiple stimulus multi-touch sensor panels |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2166327B1 (en) * | 1972-01-04 | 1974-06-21 | Lavaud Josiane | |
JPS55103629A (en) * | 1979-02-03 | 1980-08-08 | Pentel Kk | Information input device |
EP0069182A1 (en) * | 1981-07-02 | 1983-01-12 | Gaston Gavarret | Security device for electronic apparatuses and especially for television receivers |
US4423286A (en) * | 1982-07-21 | 1983-12-27 | Talos Systems, Inc. | Apparatus and method for determining the position of a driven coil within a grid of spaced conductors |
US4513043A (en) * | 1982-10-08 | 1985-04-23 | Sanders Associates, Inc. | Precision wire grid glass digitizing tablets |
JPS59166891U (en) * | 1983-04-21 | 1984-11-08 | 長田 理 | Simple water purifier |
JPS6143331A (en) * | 1984-08-08 | 1986-03-01 | Totoku Electric Co Ltd | Detection element for coordinate position of graphic input device and its production |
JPH0769763B2 (en) * | 1988-12-24 | 1995-07-31 | シャープ株式会社 | Tablet |
-
1972
- 1972-11-20 JP JP11564872A patent/JPS5319380B2/ja not_active Expired
-
1973
- 1973-09-27 IT IT29435/73A patent/IT1001558B/en active
- 1973-10-03 GB GB4609573A patent/GB1440130A/en not_active Expired
- 1973-10-15 FR FR7338164A patent/FR2207313B1/fr not_active Expired
- 1973-11-09 CA CA185,516A patent/CA1025124A/en not_active Expired
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2155641A (en) * | 1984-02-29 | 1985-09-25 | Pentel Kk | Pattern input apparatus |
US5194699A (en) * | 1990-04-03 | 1993-03-16 | Summagraphics Corporation | Digitizer tablet with fixed incremented grid portions |
US8928617B2 (en) | 2007-01-03 | 2015-01-06 | Apple Inc. | Simultaneous sensing arrangement |
US10871850B2 (en) | 2007-01-03 | 2020-12-22 | Apple Inc. | Simultaneous sensing arrangement |
WO2008085719A2 (en) | 2007-01-03 | 2008-07-17 | Apple Inc. | Simultaneous sensing arrangement |
US7812827B2 (en) | 2007-01-03 | 2010-10-12 | Apple Inc. | Simultaneous sensing arrangement |
EP2453341A1 (en) * | 2007-01-03 | 2012-05-16 | Apple Inc. | Simultaneous sensing arrangement four touchsensitive surface |
CN102253748B (en) * | 2007-01-03 | 2016-02-10 | 苹果公司 | Touch-sensing equipment, method and comprise the electronic equipment of touch-sensing equipment |
CN101632060B (en) * | 2007-01-03 | 2012-11-28 | 苹果公司 | Simultaneous sensing arrangement |
CN102226883B (en) * | 2007-01-03 | 2013-01-16 | 苹果公司 | Touch sensing device, method, electronic device including touch sensing device |
US8552998B2 (en) | 2007-01-03 | 2013-10-08 | Apple Inc. | Simultaneous sensing arrangement |
US9552115B2 (en) | 2007-01-03 | 2017-01-24 | Apple Inc. | Simultaneous sensing arrangement |
US11675454B2 (en) | 2007-01-03 | 2023-06-13 | Apple Inc. | Simultaneous sensing arrangement |
WO2008085719A3 (en) * | 2007-01-03 | 2009-06-04 | Apple Inc | Simultaneous sensing arrangement |
US11775109B2 (en) | 2007-06-13 | 2023-10-03 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US9990084B2 (en) | 2007-06-13 | 2018-06-05 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US10747355B2 (en) | 2007-06-13 | 2020-08-18 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
US11106308B2 (en) | 2007-06-13 | 2021-08-31 | Apple Inc. | Touch detection using multiple simultaneous stimulation signals |
CN101639750A (en) * | 2008-08-01 | 2010-02-03 | 索尼株式会社 | Touch panel and method for operating the same, and electronic apparatus and method for operating the same |
US9606663B2 (en) | 2008-09-10 | 2017-03-28 | Apple Inc. | Multiple stimulation phase determination |
US9715306B2 (en) | 2008-09-10 | 2017-07-25 | Apple Inc. | Single chip multi-stimulus sensor controller |
US10042472B2 (en) | 2008-09-10 | 2018-08-07 | Apple Inc. | Single-chip multi-stimulus sensor controller |
US10042476B2 (en) | 2008-09-10 | 2018-08-07 | Apple Inc. | Channel scan architecture for multiple stimulus multi-touch sensor panels |
EP2503432A4 (en) * | 2009-10-09 | 2014-07-23 | Egalax Empia Technology Inc | Method and device for dual-differential sensing |
EP2503432A1 (en) * | 2009-10-09 | 2012-09-26 | Egalax_Empia Technology Inc. | Method and device for dual-differential sensing |
Also Published As
Publication number | Publication date |
---|---|
FR2207313B1 (en) | 1975-03-21 |
FR2207313A1 (en) | 1974-06-14 |
JPS4974847A (en) | 1974-07-19 |
DE2357596B2 (en) | 1975-08-14 |
DE2357596A1 (en) | 1974-06-12 |
JPS5319380B2 (en) | 1978-06-20 |
IT1001558B (en) | 1976-04-30 |
CA1025124A (en) | 1978-01-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |