WO1996006407A1 - Ecran tactile - Google Patents

Ecran tactile Download PDF

Info

Publication number
WO1996006407A1
WO1996006407A1 PCT/DE1995/001110 DE9501110W WO9606407A1 WO 1996006407 A1 WO1996006407 A1 WO 1996006407A1 DE 9501110 W DE9501110 W DE 9501110W WO 9606407 A1 WO9606407 A1 WO 9606407A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch panel
panel according
receivers
transmitters
tubes
Prior art date
Application number
PCT/DE1995/001110
Other languages
German (de)
English (en)
Inventor
Karsten Ballhorn
Original Assignee
Nsm Aktiengesellschaft
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 Nsm Aktiengesellschaft filed Critical Nsm Aktiengesellschaft
Priority to EP95928960A priority Critical patent/EP0776513A1/fr
Publication of WO1996006407A1 publication Critical patent/WO1996006407A1/fr

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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen

Definitions

  • the invention relates to a touch panel, comprising optical transmitters and receivers arranged opposite one another, a control unit and an interface.
  • touchscreens i.e. Screens on which the user can choose between several options by touching the display directly.
  • the touched point is recognized by the computer connected to the screen and the further processing takes place accordingly.
  • the acquisition is capacitive, i.e. alternating currents are influenced by touching a conductive film.
  • the detection is resistive, i.e. by touching a conductive film with practically a counter film, a short circuit is generated and the resistance conditions change.
  • the detection takes place acoustically, ie an ultrasound field is generated within a space between two foils, and touching the one foil and thus narrowing the space at a certain point changes the intensity and frequency of sound waves that arrive at sensors.
  • the detection takes place optically, ie a grid network of infrared or IR rays is formed, which is interrupted by a user's finger. The corresponding receivers register the interruption and the lattice point in question can thus be located.
  • the resolution depends on how many pairs of IR transmitters and receivers are present. This number is included in the cost. In the borderline case, an arrangement of transmitters and receivers can probably be assumed approximately every 3 mm, which results in the grid unit and the costs.
  • the screen fineness is e.g. higher for acoustically or electrostatically operating touchscreen systems.
  • Another known problem is incorrect triggering in an optical transmitter-receiver system due to interfering bodies which enter the sensor area and thus cause a signal.
  • An electronically operating dart game device in which a frame is arranged outside the hit disk, in which transmitter and Receiver elements are arranged, the connecting paths of which form a grid above the disk and are crossed by a dart hitting the disk. Coordinates are assigned to the grid, the values of which are recorded in accordance with the crossing points and evaluated for the progress of the game.
  • the frame which forms an easily assembled unit, preferably consists of strip-like elements which are expediently arranged at right angles to one another. In this case there is an XY coordinate grid. Diodes are provided as transmitter and receiver elements. Pulsed and continuous light beams are used.
  • the object of the invention is to create an easy-to-use and inexpensive touchscreen or touchpanel arrangement with good operating properties, which is also particularly suitable for use in gaming devices.
  • a touch panel thus comprises oppositely arranged optical transmitters and receivers, a control unit and an interface.
  • the optical transmitters and receivers are IR transmitters and IR receivers which are mounted on printed circuit boards together with the control unit and interface.
  • the transmitters and receivers are arranged in tubes or bores.
  • the invention makes it possible to produce and assemble a touch panel with little effort.
  • the common arrangement of transmitters, receivers, control unit and interface on printed circuit boards results in a modular structure.
  • the recessed arrangement of the transmitter and receiver in Tubes or bores or the like also eliminates frequently occurring disturbances from ambient light.
  • Another advantage of this arrangement is that a precisely fitting assembly and thus adjustment of transmitters and receivers are made possible. Furthermore, this results in the requirement for the transmitters to be emitted in a narrow angular range, and in turn the possibility of emitting much higher power in the short term.
  • touch panels according to the invention can be used practically in any display fields.
  • they can be used in game devices, so that the display screens simultaneously form the operating and input elements. This reduces the space required on the front panels of the devices, which can be made smaller or clearer.
  • the incentive to play can thus be increased for the players through greater clarity and increased ease of use. Due to the often small display and operating elements, the cost is not that great.
  • a touch panel according to the invention can be integrated in a monitor or another display element. However, it is particularly advantageous if it is designed as an add-on frame on an existing display, as a result of which it can be used as a retrofit part.
  • two pairs of printed circuit boards are provided and the overall arrangement is built into a preferably two-part plastic housing.
  • the appropriately narrow circuit boards can be connected by means of plug-in connectors or flexible circuit boards.
  • plug-in connectors or flexible circuit boards On the printed circuit boards or in the plastic housing, some serial interface may be arranged. This means that the overall structure is implemented in practically one unit.
  • the plastic housing serves the purpose of encapsulation, on the other hand it serves as a support and guide for the printed circuit boards and in particular the optical elements fitted there.
  • the proposed bores and tubes, in short around tubes, have a length of about 20 mm, although this value is in no way to be considered restrictively.
  • the tube walls can advantageously be formed by black plastic parts, possibly corresponding blackened housing parts.
  • Daylight filters are preferably arranged in front of the transmitters and receivers.
  • IR-transparent plastic glass can be provided in front of the tubes. In this way, the openings are covered and the ambient light is filtered.
  • the optical transmitters can be light-emitting diodes (LEDs) or laser diodes etc.
  • the recipients can e.g. Be photo transistors or photo diodes. These components are characterized by small sizes and relatively low prices.
  • a / D converters are expediently connected to the receivers, which record the voltage values received.
  • cyclic activation of the light-emitting diodes is provided in such a way that they are switched on and off. On the one hand, this reduces the energy requirement, because with a sufficient clock frequency, practically complete monitoring of the display field can be achieved. On the other hand, there is an even power consumption.
  • the transmitters are expediently also operated in a pulsed manner, as a result of which interference can be switched off more easily.
  • cyclic activation of the light-emitting diodes can be provided in such a way that they are switched on and off in groups. This simplifies the outlay on circuitry and power.
  • a device which cyclically polls the receivers. In this way, the entire monitoring can be organized with few elements.
  • a device for detecting disturbing objects in the beam path during the switch-on phase can advantageously be provided.
  • An evaluation unit is expediently provided for the touch panel according to the invention.
  • FIG. 1 shows a schematic representation of the transmitter and receiver arrangement in the case of a touch panel
  • FIG. 2 shows a schematic representation of a first touch panel
  • FIG. 3 shows a schematic illustration of a second touch panel
  • FIG. 4 the basic structure of a touch panel arrangement according to the invention.
  • FIG. 5 shows the use of touch panels according to the invention in entertainment devices. It is first referred to FIG. 1, in which the transmitter-receiver arrangement is illustrated with a touch panel.
  • the arrangement is used to monitor a field 2, such as a display, which is part of a device 4.
  • a field 2 such as a display
  • the associated receivers 8, 12 receive less or no light, which is registered by the evaluation, which identifies the receivers and determines the corresponding XY coordinate or position of the finger or pen. In this way, an assignment to the object shown here can then be carried out and the application program can then continue to work accordingly.
  • FIG. 2 shows an exemplary embodiment of a touch panel with a circular field 14.
  • Four frame strips 16, 18, 20, 22 are each arranged at right angles and closely adjacent to the field 14, with a strip spacing of approximately 50 cm.
  • Transmitter and receiver elements in the form of light-emitting diodes and sensors are built into the strips 16 to 22, the transmitters and receivers being located opposite one another.
  • the frame strips 16 and 20 include transmitter elements and the frame strips 18 and 22 receiver elements. In this way, crossing light rays result.
  • a finger or pen interrupts the beam path of such pairs of rays. In the exemplary embodiment shown, this is illustrated by the light beams 24, 26, the positions of the corresponding transmitter and receiver elements providing the XY coordinates of the finger or pen position on the field 14. . - « __. - uv , 96/06407
  • the second touch panel illustrated in FIG. 3 is an attachment for a screen 28.
  • This includes two pairs of printed circuit boards 30, 32, 34, 36, each of which carries optical transmitters 38, 40 and optical receivers 42, 44 opposite one another.
  • a control unit 46 with a transmission unit and controller and a serial interface 48 are arranged on the printed circuit boards 30 to 36.
  • the printed circuit boards 30 to 36 are connected to one another by means of plug connectors 50.
  • a connection cable 52 is used for connection to a supply, not shown.
  • the printed circuit boards 30 to 36 are accommodated for use in a suitably two-part plastic housing which holds the printed circuit boards and optical components 38 to 44 and serves as a guide.
  • the optical components 38 to 44 are mounted in optical tubes of the housing, which are formed from the half-shells of the two housing parts. This has an influence on the beam path and also prevents interference from extraneous light.
  • the overall arrangement can then be mounted on the screen 28 as an attachment part.
  • FIG. 4 shows the basic structure of a touch panel arrangement according to the invention.
  • transmitter unit 54 and receiver unit 56 Between transmitters and receivers, summarized in transmitter unit 54 and receiver unit 56, there is a number of light beams 58 which are interrupted by a finger, pen or the like.
  • the transmission unit 54 and reception unit 56 are connected to an evaluation unit 64 via lines 60, 62. Based on their output signals, it takes from the elements of the receiving unit 56 whether they have received the full transmission signal or not and determines the position of a finger or the like inserted into the beam path from their position.
  • FIG. 5 shows an application example for touch panels according to the invention. It is an under shark device, especially for playing "17 + 4".
  • This comprises a housing 66 with a front plate 68 on which there are a number of display and operating elements.
  • the front panel 68 bears a number of input elements 70 at the bottom, which are surrounded by a frame 72 with transmitters and receivers arranged therein as a touch panel.
  • On the left on the front plate 68 is a field 74 of play and risk values, which are surrounded by a frame 76 with transmitters and receivers arranged therein as a touch panel.
  • a field 78 of usage values On the right on the front plate 68 is a field 78 of usage values, which are surrounded by a frame 80 with transmitters and receivers arranged therein as a touch panel.
  • a field 82 on top of the front plate 68 serves to display the game or score.
  • Two symbol displays 84, 86 are shown in the middle of the front plate 68.

Abstract

L'invention concerne un écran tactile qui comprend des émetteurs et des récepteurs optiques placés en face les uns des autres, ainsi qu'une unité de commande et une interface. Les émetteurs et les récepteurs optiques sont des émetteurs IR et des récepteurs IR, et sont montés sur des cartes de circuits, conjointement avec l'unité de commande et l'interface, les émetteurs et les récepteurs étant placés dans des tubes ou des alésages.
PCT/DE1995/001110 1994-08-20 1995-08-16 Ecran tactile WO1996006407A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95928960A EP0776513A1 (fr) 1994-08-20 1995-08-16 Ecran tactile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944429622 DE4429622A1 (de) 1994-08-20 1994-08-20 Touchpanel
DEP4429622.3 1994-08-20

Publications (1)

Publication Number Publication Date
WO1996006407A1 true WO1996006407A1 (fr) 1996-02-29

Family

ID=6526201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/001110 WO1996006407A1 (fr) 1994-08-20 1995-08-16 Ecran tactile

Country Status (4)

Country Link
EP (1) EP0776513A1 (fr)
CA (1) CA2198017A1 (fr)
DE (1) DE4429622A1 (fr)
WO (1) WO1996006407A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014713A1 (fr) 1997-09-12 1999-03-25 Nsm Aktiengesellschaft Appareil de jeu a flechettes actionne par des pieces de monnaie

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820414A1 (de) * 1998-05-07 1999-11-18 Carmen Diessner Kontaktierungsvorrichtung
DE19904374A1 (de) * 1999-02-03 2000-08-17 Osram Opto Semiconductors Gmbh Berührungssensitive Eingabefläche
DE10110744A1 (de) * 2001-03-07 2002-09-26 Franc Godler Grosser, berührungsempfindlicher Bereich mit zeit- und ortsgesteuerten Sender- und Empfangsmodulen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812830A (en) * 1986-12-08 1989-03-14 Digital Electronics Corporation Touch panel display assembly
US4928094A (en) * 1988-01-25 1990-05-22 The Boeing Company Battery-operated data collection apparatus having an infrared touch screen data entry device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812830A (en) * 1986-12-08 1989-03-14 Digital Electronics Corporation Touch panel display assembly
US4928094A (en) * 1988-01-25 1990-05-22 The Boeing Company Battery-operated data collection apparatus having an infrared touch screen data entry device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014713A1 (fr) 1997-09-12 1999-03-25 Nsm Aktiengesellschaft Appareil de jeu a flechettes actionne par des pieces de monnaie

Also Published As

Publication number Publication date
CA2198017A1 (fr) 1996-02-29
EP0776513A1 (fr) 1997-06-04
DE4429622A1 (de) 1996-02-22

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