WO2005051192A2 - Berührungsempfindliche eingabevorrichtung und fehlererkennungsvorrichtung für eine berührungsempfindliche eingabevorrichtung, insbesondere für medizintechnische geräte - Google Patents
Berührungsempfindliche eingabevorrichtung und fehlererkennungsvorrichtung für eine berührungsempfindliche eingabevorrichtung, insbesondere für medizintechnische geräte Download PDFInfo
- Publication number
- WO2005051192A2 WO2005051192A2 PCT/EP2004/013238 EP2004013238W WO2005051192A2 WO 2005051192 A2 WO2005051192 A2 WO 2005051192A2 EP 2004013238 W EP2004013238 W EP 2004013238W WO 2005051192 A2 WO2005051192 A2 WO 2005051192A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- measured values
- bus conductors
- measuring
- touch
- memory
- Prior art date
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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- 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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
Definitions
- the present invention relates to a touch-sensitive input device and a fault detection device for a touch-sensitive input device, in particular for medical devices, preferably life management systems such as heart-lung machines or respirators.
- GUI Graphical User Interface
- touch screen GUI units enables simple operation of even complex systems, in particular by reducing the operating elements and thereby increasing clarity, by context-dependent design of the operating options and by the system's situation-dependent assistance.
- the GUI units of this type also offer advantages on the production side, especially for larger quantities.
- a display defect can lead to a complete loss of system control. Interaction with the user via the GUI unit is no longer possible in the event of a total failure. Even partial failures can lead to an unacceptable impairment of the usability of the medical device.
- touch-sensitive input devices are susceptible to mechanical defects due to the system.
- resistive touch-sensitive input devices in the so-called 4-wire technology Because of their simple structure and their low cost, resistive touch-sensitive input devices in 4-wire technology are also interesting components for medical devices, especially since the resolution that can be achieved is completely sufficient in most cases. However, in medical devices, especially in the field of
- resistive touch-sensitive input devices two error groups can be distinguished.
- the touch-sensitive input device can fail completely. Possible causes are: line interruption of at least one line, short circuit between two lines, failure of the evaluation circuit, power failure. A functional failure is usually only noticed when the touch-sensitive input surface is touched, ie when an input is to be made.
- functional changes can occur in resistive touch-sensitive input devices. Possible causes are: changes in resistance in the resistive layer, changes in a connection / connection. Due to the changes, the touch point is incorrectly determined when entering; in the worst case, the operation is different from the intended one. Here, too, the mistake becomes apparent then notices when the touch-sensitive input surface is touched, ie when the input takes place.
- the aim of the invention is to show how malfunctions of the type mentioned above can be determined in advance, so that an indication of a malfunction and preferably also a correction can be made.
- 1 shows the basic structure of a touch-sensitive input device
- FIG. 2 shows a first exemplary embodiment of a touch-sensitive input device according to the invention, which has an error detection device;
- FIG. 1 first shows the basic structure of a resistive touch-sensitive input device using 4-wire technology.
- Two plates 10 and 20 which are provided with a conductive but resistive coating, are arranged one above the other at a short distance from one another, the distance being ensured by suitable spacing elements on the edge, for example in the form of a frame and over the surface, for example in the form of support points.
- the two plates 10, 20 but for illustrating the structure significantly spaced apart shown.
- the two conductive coatings 11 and 21 facing each other. At least one plate is flexible so that the distance between the plates suspended in contact so that the plates contact each other with their conductive coatings 11 and 21.
- ITO indium tin oxide
- the two plates 10 and 20 are arranged one on top of the other in such a way that the two pairs of bus conductors 12 and 13 or 22 and 23 are rotated through 90 ° to one another. This can be done through the conductive coatings Defined area evaluated in both directions X and Y and a contact point in the area can be determined.
- bus conductors are understood to mean any type of electrode which is arranged on or on a plate and is connected to the conductive layer of the plate.
- Bus conductors can be implemented in the form of conductors / electrodes which, as shown in the figures, extend in whole or in part over the entire length of a side edge of a plate, but also in the form of conductors / electrodes which are used elsewhere, for example in the corners, and / or with a different size and / or shape on the conductive layer of a plate to contact it.
- FIG. 2 shows an embodiment of the device from FIG. 1, which is supplemented by an error detection device.
- a touch-sensitive input device according to the invention also comprises a conventional evaluation circuit 30 or its functionality, so that a touch-sensitive input device according to the invention also provides the result of the determination of a touch point on the active surface via an output 31.
- a touch-sensitive input device comprises a first and a second measuring device 32 and 33, the measuring connections of which are connected to the connecting lines 14 and 15 or 24 and 25 of the bus conductors 12 and 13 or 22 and 23.
- the measuring devices 32 and 33 advantageously each comprise a first output 32a and 33a, at which a signal is always output when the two measuring devices 32 and 33 take a measurement carry out.
- the signal of the first output of the two measuring devices 32 and 33 is fed to the evaluation circuit 30, which has an input for this purpose and which does not perform an evaluation when a signal is present at this input, but rather the connecting lines 14 and 15 or 24 and 25 of the bus conductor 12 and 13 or 22 and 23 for a measurement by the two measuring devices 32 and 33.
- the two measuring devices 32 and 33 repeatedly carry out measurements. For this purpose, a corresponding signal is first emitted from the first measuring device 32 to the evaluation device 30 at the first output 32a. Then the measuring device 32 applies a reference signal to the connecting lines 14 and 15 connected to its measuring connections, usually a reference voltage or a reference current, and measures the measured variable resulting from the reference signal, that is to say a measuring current or a measuring voltage. The measured value is determined by the conductive coating 11 of the first plate 10. The first measuring device 32 transmits the measured value via a second output 32b to a monitoring device 34, which initially stores the transmitted measurement result in a non-volatile memory 35. The first measuring device 32 then ends its measurement and switches off the signal at the first output 32a.
- the second measuring device 33 then sends a corresponding signal to the evaluation device 30 at the first output 33a, and the second measuring device 33 applies a reference signal to the connecting lines 24 and 25 connected to its measuring connections, likewise as a rule a reference voltage or a Reference current and measures the measurement variable resulting from the reference signal, i.e. also a measurement current or a measurement voltage.
- the measured value is the second by the conductive coating 21 Plate 20 determined.
- the second measuring device 33 also forwards the measured value to the monitoring device 34 via a second output 33b, which in turn initially stores the transmitted measurement result in the non-volatile memory 35.
- the second measuring device 33 then ends its measurement and switches off the signal at the first output 33a.
- the evaluation device 30 then starts again with the evaluation of the touch-sensitive input surface and continues the evaluation until the measuring devices 32 and 33 ′ carry out a measurement again.
- the cycle of the measurements depends on the application environment and can be freely determined to a large extent as long as the function of the evaluation device and the determination of the contact point are not impaired.
- the monitoring device reads out one or more previously stored result values from the memory 35 after storing new result values.
- the monitoring device 34 compares the read-out result values, for example, with the result values last transmitted by the first measuring devices and, in predetermined cases, emits a signal indicating an error via an output 36.
- Result values can be stored in the memory 35 over a relatively long period of time, so that the monitoring device 34 is able to read out result values measured recently and stored in the memory as well as result values and include them in the monitoring that were much earlier Times were measured.
- the period of time advantageously extends back to the start-up of the touch-sensitive input device, which is expediently ensured by a suitable storage algorithm result values that are more recent are saved, quasi "thinned out” with a lower temporal frequency.
- measurement values can be stored at the beginning of the life cycle of the touch-sensitive input device without having to provide an oversized memory.
- Result values can be suitably deleted
- memory areas are used again for current measured values, alternatively for long-term and short-term -Measured values, different memory areas are also provided in the memory 35, with certain measured values, for example every 1000th result value, being regularly transferred from the short-term area to the long-term area.
- the monitoring device determines whether there is a short-term error, for example a cable break or a short circuit between the conductive coatings.
- the long-term result values allow the detection of slowly occurring errors, for example triggered by drift or changes due to permanent loads.
- a correction device 37 which contains the output signal 31 of the evaluation device 30 and the Output signal 36 are fed to the monitoring device 34 and, in the example shown here, is connected to the non-volatile memory 35 at least in a direct reading manner in order to read out result values when an error signal 36 is present.
- the correction device 37 corrects the output signal 31 of the evaluation device 30 and outputs a corrected output signal at an output 31 ′.
- the measuring devices 32 and 33 can be combined to form a measuring device which alternately carries out both the measurement on the conductive coating 11 of the first plate 10 and the measurement on the conductive coating 21 of the first plate 20.
- the combined measuring device or the individual measuring devices 32, 33 can also be integrated into the monitoring device, as can the monitoring device 34 in the evaluation device 30 '.
- the monitoring and signaling functions of the monitoring device 34 can be implemented in the form of programs which are suitably stored in the monitoring device 34 itself or in the memory 35 and can be processed by the monitoring device 34.
- FIG. 4 shows a further exemplary embodiment of a touch-sensitive input device according to the invention.
- the evaluation circuit 30 is connected to at least one of the two electrodes of the first plate 10.
- 4 shows a connection of the evaluation circuit 30 to the second bus conductor 113 via the connecting line 115.
- the connections described so far correspond to the basic structure of a touch-sensitive input device using 5-wire technology.
- the two measuring devices 32 and 33 carry out repeated measurements.
- a corresponding signal is first emitted from the first measuring device 32 to the evaluation device 30 at the first output 32a.
- the measuring device 32 applies a reference signal to the connecting lines 114 and 115 connected to its measuring connections, as a rule a reference voltage or a reference current, and measures the measured variable resulting from the reference signal, that is to say a measuring current or a measuring voltage.
- the measured value is determined by the conductive coating 11 of the first plate 10.
- the first measuring device 32 transmits the measured value via a second output 32b to a monitoring device 34, which initially stores the transmitted measurement result in a non-volatile memory 35.
- the first measuring device 32 then ends its measurement and switches the signal at the first output 32a.
- the second measuring device 33 then sends a corresponding signal to the evaluation device 30 at the first output 33a, and the second measuring device 33 applies a reference signal to the connecting lines 124 and 125 connected to its measuring connections, likewise generally a reference voltage or a Reference current and measures the measurement variable resulting from the reference signal, i.e. also a measurement current or a measurement voltage.
- the measured value is determined by the conductive coating 21 of the second plate 20.
- the second measuring device 33 also forwards the measured value to the monitoring device 34 via a second output 33b, which in turn initially stores the transmitted measurement result in the non-volatile memory 35.
- the second measuring device 33 then ends its measurement and switches off the signal at the first output 33a.
- the evaluation device 30 then starts again with the evaluation of the touch-sensitive input surface and continues the evaluation until the measuring devices 32 and 33 carry out a measurement again.
- a conventional touch-sensitive input device of the type described above can be supplemented by an error detection device according to the invention, which comprises the measuring devices, the monitoring device and the memory. In this way, the manufacture are limited to these components and retrofitting existing input devices.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Control And Safety Of Cranes (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006540360A JP4620682B2 (ja) | 2003-11-25 | 2004-11-22 | 特に医療技術装置のためのタッチセンス入力装置およびタッチセンス入力装置用の障害検出装置 |
EP04803219A EP1687704A2 (de) | 2003-11-25 | 2004-11-22 | Berührungsempfindliche eingabevorrichtung und fehlererkennungsvorrichtung für eine berührungsempfindliche eingabevorrichtung, insbesondere für medizintechnische geräte |
US10/580,587 US7561144B2 (en) | 2003-11-25 | 2004-11-22 | Touch-sensitive input device and fault detection device for a touch-sensitive input device, in particular for medico-technical devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10354966.8 | 2003-11-25 | ||
DE10354966A DE10354966B4 (de) | 2003-11-25 | 2003-11-25 | Berührungsempfindliche Eingabevorrichtung und Fehlererkennungsvorrichtung für eine berührungsempfindliche Eingabevorrichtung, insbesondere für medizintechnische Geräte |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005051192A2 true WO2005051192A2 (de) | 2005-06-09 |
WO2005051192A3 WO2005051192A3 (de) | 2006-05-18 |
Family
ID=34625231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/013238 WO2005051192A2 (de) | 2003-11-25 | 2004-11-22 | Berührungsempfindliche eingabevorrichtung und fehlererkennungsvorrichtung für eine berührungsempfindliche eingabevorrichtung, insbesondere für medizintechnische geräte |
Country Status (6)
Country | Link |
---|---|
US (1) | US7561144B2 (de) |
EP (1) | EP1687704A2 (de) |
JP (1) | JP4620682B2 (de) |
CN (1) | CN100442212C (de) |
DE (1) | DE10354966B4 (de) |
WO (1) | WO2005051192A2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101344826B (zh) * | 2008-09-10 | 2010-06-02 | 友达光电股份有限公司 | 触碰感应装置及其感应信号处理方法 |
JP5271300B2 (ja) * | 2010-03-19 | 2013-08-21 | 株式会社小松製作所 | 建設機械の表示装置 |
CN102314389B (zh) | 2010-07-08 | 2015-04-15 | 飞思卡尔半导体公司 | 用于触摸传感器接口故障检测的方法和系统 |
JP5642500B2 (ja) * | 2010-07-22 | 2014-12-17 | 富士通コンポーネント株式会社 | タッチパネルにおける位置検出方法、タッチパネル、タッチパネルの初期化方法 |
DE102011011767A1 (de) * | 2011-02-18 | 2012-08-23 | Fresenius Medical Care Deutschland Gmbh | Medizintechnisches Gerät mit Mehrfunktionsdisplay |
WO2014162330A1 (ja) * | 2013-04-01 | 2014-10-09 | テルモ株式会社 | 循環装置及びその制御方法 |
IT201800008022A1 (it) * | 2018-08-09 | 2020-02-09 | St Microelectronics Srl | Procedimento di autotest, circuito e dispositivo corrispondenti |
US10877600B2 (en) * | 2018-09-25 | 2020-12-29 | ROVl GUIDES, INC. | Systems and methods for detecting problems inputting text with a touch environment and providing solutions |
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EP0528598A2 (de) * | 1991-08-12 | 1993-02-24 | Ncr International Inc. | Gerät und Verfahren zur Fehlerermittlung bei einem Digitalisierer |
US6005200A (en) * | 1994-08-05 | 1999-12-21 | Hyundai Electronics America | Compensation of stylus signals in digitizing tablet |
US6016140A (en) * | 1997-10-29 | 2000-01-18 | Nortel Networks Corporation | Automatic touch screen calibration |
WO2003049002A2 (en) * | 2001-11-30 | 2003-06-12 | 3M Innovative Properties Company | Touch screen calibration system and method |
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US3777222A (en) * | 1972-05-12 | 1973-12-04 | Ibm | Modular touch sensitive indicating panels with touch and light transmissive overlay cover membrane containing visible printed indicia |
US4951037A (en) | 1988-03-17 | 1990-08-21 | Honeywell Inc. | Display segment fault detection apparatus |
DE3914645A1 (de) | 1988-05-04 | 1989-11-09 | Rasmussen Gmbh | Steckkupplung zum ankuppeln eines schlauches an ein rohr |
AU693124B2 (en) | 1993-11-05 | 1998-06-25 | Sk Interfaces Limited | Interactive programmable interface for relegendable LCD keyswitches |
US5940065A (en) * | 1996-03-15 | 1999-08-17 | Elo Touchsystems, Inc. | Algorithmic compensation system and method therefor for a touch sensor panel |
DE19735106C2 (de) | 1997-08-13 | 2003-04-30 | Siemens Ag | Konfigurierbare Telekommunikationsendeinrichtung |
DE19753742A1 (de) | 1997-12-04 | 1999-06-10 | Grundig Ag | Berührungssensitiver Flachbildschirm für ein Kraftfahrzeug |
US6278444B1 (en) * | 1998-08-21 | 2001-08-21 | Geoffrey D. Wilson | Low current four-wire interface for five-wire resistive touch-screen |
US6621486B2 (en) * | 2001-01-23 | 2003-09-16 | Mobigence, Inc. | Expanded touch panel display |
TW562339U (en) * | 2001-10-26 | 2003-11-11 | Eturbotouch Technology Inc | Converter (circuit) allowing resistance (voltage) type five-wire and six-wire touch screen to be commonly used in a four-wire controller |
US7372510B2 (en) * | 2002-03-01 | 2008-05-13 | Planar Systems, Inc. | Reflection resistant touch screens |
-
2003
- 2003-11-25 DE DE10354966A patent/DE10354966B4/de not_active Expired - Fee Related
-
2004
- 2004-11-22 EP EP04803219A patent/EP1687704A2/de not_active Withdrawn
- 2004-11-22 WO PCT/EP2004/013238 patent/WO2005051192A2/de not_active Application Discontinuation
- 2004-11-22 JP JP2006540360A patent/JP4620682B2/ja not_active Expired - Fee Related
- 2004-11-22 CN CNB2004800348118A patent/CN100442212C/zh not_active Expired - Fee Related
- 2004-11-22 US US10/580,587 patent/US7561144B2/en not_active Expired - Fee Related
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EP0528598A2 (de) * | 1991-08-12 | 1993-02-24 | Ncr International Inc. | Gerät und Verfahren zur Fehlerermittlung bei einem Digitalisierer |
US6005200A (en) * | 1994-08-05 | 1999-12-21 | Hyundai Electronics America | Compensation of stylus signals in digitizing tablet |
US6016140A (en) * | 1997-10-29 | 2000-01-18 | Nortel Networks Corporation | Automatic touch screen calibration |
WO2003049002A2 (en) * | 2001-11-30 | 2003-06-12 | 3M Innovative Properties Company | Touch screen calibration system and method |
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
---|---|
DE10354966A8 (de) | 2005-11-24 |
CN1886721A (zh) | 2006-12-27 |
US7561144B2 (en) | 2009-07-14 |
CN100442212C (zh) | 2008-12-10 |
JP4620682B2 (ja) | 2011-01-26 |
DE10354966B4 (de) | 2012-06-06 |
DE10354966A1 (de) | 2005-07-07 |
EP1687704A2 (de) | 2006-08-09 |
US20070126706A1 (en) | 2007-06-07 |
JP2007512060A (ja) | 2007-05-17 |
WO2005051192A3 (de) | 2006-05-18 |
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