WO2000042493A1 - Input or control unit for devices and method for generating control signals for devices - Google Patents

Input or control unit for devices and method for generating control signals for devices Download PDF

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Publication number
WO2000042493A1
WO2000042493A1 PCT/DE2000/000013 DE0000013W WO0042493A1 WO 2000042493 A1 WO2000042493 A1 WO 2000042493A1 DE 0000013 W DE0000013 W DE 0000013W WO 0042493 A1 WO0042493 A1 WO 0042493A1
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WO
WIPO (PCT)
Prior art keywords
devices
changes
finger
features
input
Prior art date
Application number
PCT/DE2000/000013
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German (de)
French (fr)
Inventor
Manfred Bromba
Original Assignee
Siemens 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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2000042493A1 publication Critical patent/WO2000042493A1/en

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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
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/033—Indexing scheme relating to G06F3/033
    • G06F2203/0338—Fingerprint track pad, i.e. fingerprint sensor used as pointing device tracking the fingertip image

Definitions

  • the touchpad in particular is characterized by annoying impairments caused by the hand of the user, the capacitive effect of which is often noticeably superimposed on the finger and can thus lead to disruptive changes to the cursor control.
  • the invention has for its object to provide a technical teaching with which these problems can be avoided. This object is achieved by an input or control device for devices and by a method for generating control signals for devices according to one of the independent claims. Advantageous further developments of the present invention are to be protected by corresponding subclaims.
  • the invention is based on the principle of determining changes in position by comparing pictorial features or features derived therefrom. This principle enables a significantly higher resolving power to be achieved in the control.
  • the invention is explained below on the basis of preferred exemplary embodiments and with the aid of the figures.
  • FIG. 1 shows a device according to the invention with two image data shifted relative to one another, which are detected by the sensor elements of the device.
  • FIG. 2 shows in a schematic manner the basic structure of a device according to the invention and the functional connection of its components.
  • the device comprises means for detecting changes in position of a finger of a system user or of a pointing instrument guided by the latter.
  • these means in the present invention - as shown in FIG. 1 - comprise a flat arrangement (SA) of suitable sensors (SE), with the aid of which pictorial features of the surface of the finger or the pointing instrument are detected and one Data processing device (DVE) for determining changes in position by comparing these pictorial features or features derived therefrom at different times.
  • SA flat arrangement
  • SE suitable sensors
  • DVE Data processing device
  • Changes in position can best be represented for the purposes of information processing in connection with the present invention in the form of so-called motion vectors, which are also called displacement vectors.
  • motion vectors which are also called displacement vectors.
  • Such means will normally be simple digital circuits, which - possibly supplemented by analog circuits and by A / D or D / A converters - represent circuits for level adjustment or driver circuits in the simplest case, but also more complicated processing steps - e.g. a speed-dependent enlargement, etc. - with the help of processors.
  • a further embodiment of the invention is particularly suitable for controlling some more complex processes, such as the remote-controlled operation of manipulators, in which changes in the rotational position (DW) are also detected and used to generate input or control signals.
  • DW rotational position
  • a particularly advantageous implementation of the invention is possible with the aid of a fingerprint sensor. In many devices, this is often available anyway for the identification or authentication of the authorized user. A local resolution of 0.05 mm can easily be achieved.
  • the position data can be easily determined by simply correlating the two-dimensional image data of the fingerprint of the finder with a stored finger. Instead of the image itself, extracted image features (edges, corners, etc.) can also be used.

Abstract

Devices with a built-in finger print sensor, whereby said sensor can be used therein in order to determine the relative length of a finger by comparing real characteristics with the characteristics of a reference print with the possibility of high local resolution. Changes in position can be converted into input signals or control signals for devices.

Description

Beschreibungdescription
Eingabe- oder Steuervorrichtung für Gerate und Verfahren zur Erzeugung von Steuersignalen für GeräteInput or control device for devices and method for generating control signals for devices
Mit der Einfuhrung grafischer Benutzeroberflachen für Compu¬ ter und andere Informationsverarbeitungs- oder Kommunikatlon- sendgerate haben Eingabe- oder Steuervorrichtungen für solche Gerate, die besonders an solche grafischen Benutzeroberfla- chen angepaßt sind, stark an Bedeutung gewonnen. Die bis heute am weitesten verbreitete Vorrichtung dieser Art ist die Maus. Daneben ist m letzter Zeit, besonders für mobile Anwendungen, das Touchpad getreten.With the introduction of graphical user interfaces for Compu ¬ ter and other information processing or Kommunikatlon- transmitting devices have input or control devices for such devices, which are particularly adapted to such graphical user interfaces, become increasingly important. The most widely used device of this type to date is the mouse. In addition, the touchpad has recently been kicked, especially for mobile applications.
Beide Vorrichtungen sind aufgrund ihrer physikalischen Funktionsprinzipien m ihrer Auflosung begrenzt. Besonders das Touchpad ist von störenden Beeinträchtigungen durch die Hand des Benutzers geprägt, deren kapazitive Wirkung die des Fingers häufig sp rbar überlagert und so zu störenden Verande- rungen der Cursor-Steuerung fuhren kann.Both devices are limited in their resolution due to their physical functional principles. The touchpad in particular is characterized by annoying impairments caused by the hand of the user, the capacitive effect of which is often noticeably superimposed on the finger and can thus lead to disruptive changes to the cursor control.
Der Erfindung liegt die Aufgabe zugrunde, eine technische Lehre anzugeben, mit der diese Probleme vermieden werden können. Diese Aufgabe wird durch eine Eingabe- oder Steuervor- richtung für Gerate und durch ein Verfahren zur Erzeugung von Steuersignalen für Gerate nach einem der unabhängigen Ansprüche gelost. Vorteilhafte Weiterentwicklungen der vorliegenden Erfindung sollen durch entsprechende Unteranspruche geschützt werden.The invention has for its object to provide a technical teaching with which these problems can be avoided. This object is achieved by an input or control device for devices and by a method for generating control signals for devices according to one of the independent claims. Advantageous further developments of the present invention are to be protected by corresponding subclaims.
Die Erfindung beruht im Gegensatz zu bekannten Vorrichtungen und Verfahren auf dem Prinzip der Bestimmung von Positionsanderungen durch einen Vergleich bildhafter Merkmale oder daraus abgeleiteter Merkmale. Durch dieses Prinzip ist ein we- sentlich höheres Auflösungsvermögen bei der Steuerung zu erreichen. Im folgenden wird die Erfindung anhand bevorzugter Ausfuh- rungsbeispiele und mit Hilfe der Figuren erläutert.In contrast to known devices and methods, the invention is based on the principle of determining changes in position by comparing pictorial features or features derived therefrom. This principle enables a significantly higher resolving power to be achieved in the control. The invention is explained below on the basis of preferred exemplary embodiments and with the aid of the figures.
Figur 1 zeigt in sche atischer Weise eine erfmdungsgemaße Vorrichtung mit zwei gegeneinander verschobenen Bilddaten, die von den Sensorelementen der Vorrichtung erfaßt werden.FIG. 1 shows a device according to the invention with two image data shifted relative to one another, which are detected by the sensor elements of the device.
Figur 2 zeigt m schematischer Weise den prinzipiellen Aufbau einer erfmdungsgemaßen Vorrichtung und den Wirkzusammenhang seiner Komponenten.FIG. 2 shows in a schematic manner the basic structure of a device according to the invention and the functional connection of its components.
Wie m Figur 2 gezeigt wird, umfaßt die Vorrichtung (ESV) Mittel zur Erfassung von Positionsanderungen eines Fingers eines Systembenutzers oder eines von diesem geführten Zeige- Instruments. Im Gegensatz zu bekannten Vorrichtungen dieser Art umfassen diese Mittel bei der vorliegenden Erfindung - wie m Figur 1 gezeigt wird - eine flachenhafte Anordnung (SA) geeigneter Sensoren (SE) , mit deren Hilfe bildhafte Merkmale der Oberflache des Fingers oder des Zeigeinstruments erfaßt werden und eine Datenverarbeitungseinrichtung (DVE) zur Bestimmung von Positionsanderungen durch einen Vergleich dieser bildhaften Merkmale oder daraus abgeleiteter Merkmale zu unterschiedlichen Zeitpunkten.As shown in FIG. 2, the device (ESV) comprises means for detecting changes in position of a finger of a system user or of a pointing instrument guided by the latter. In contrast to known devices of this type, these means in the present invention - as shown in FIG. 1 - comprise a flat arrangement (SA) of suitable sensors (SE), with the aid of which pictorial features of the surface of the finger or the pointing instrument are detected and one Data processing device (DVE) for determining changes in position by comparing these pictorial features or features derived therefrom at different times.
Positionsanderungen (BV) lassen sich für die Zwecke der Informationsverarbeitung im Zusammenhang mit der vorliegenden Erfindung am besten in Form von sogenannten Bewegungsvektoren, die auch Verschiebungsvektoren (engl. Displacement vec- tors) genannt werden, darstellen. Diese und dazu gleichwer- tige Arten der Darstellung von Positionsanderungen sind dem Fachmann aus der elektronischen Bildverarbeitung hinreichend bekannt und m ssen deshalb hier nicht weiter erläutert werden. Sie werden mit Hilfe unterschiedlicher, aus der elektronischen Bildverarbeitung allgemein bekannter Verfahren durch einen Vergleich bildhafter Merkmale (z.B. einzelne Bildpunkte oder Gruppen von Bildpunkten, etc.) oder durch einen Vergleich daraus abgeleiteter Merkmale (DCT-transformiertes Bild, Kantenbild, etc.) bestimmt. Diese Verfahren zur Bestim¬ mung von Positionsanderungen laufen auf unterscmedlichen, in der Literatur beschriebenen Datenverarbeitungseinrichtungen (DVE) ab, die m Form dedizierter digitaler (Logikschalrαn- gen) oder auch analoger (artificial retma) Schaltungen oder in Form von Schaltungen auf der Basis von Prozessoren (z.B. Signalprozessoren) vorliegen können. Es bedarf nier weαer der Erläuterung dieser Verfahren noch derartiger Datenveraroei- tungsemrichtungen, weil alle diese Bestandteile der erfin- dungsgemaßen Vorrichtung dem Fachmann bekannt sind.Changes in position (BV) can best be represented for the purposes of information processing in connection with the present invention in the form of so-called motion vectors, which are also called displacement vectors. These and equivalent types of representation of changes in position are sufficiently known to the person skilled in the art from electronic image processing and therefore need not be explained further here. They are transformed using different, generally known methods from electronic image processing by comparing pictorial features (for example individual pixels or groups of pixels, etc.) or by comparing features derived therefrom (DCT-transformed) Image, edge image, etc.) determined. These methods of Bestim ¬ mung position Sande stanchions run on unterscmedlichen, described in the literature data processing equipment (DVE) from, (gen Logikschalrαn-) is m the form of dedicated digital or analog (artificial RETMA) circuits or in the form of circuits on the basis of processors (eg signal processors) may be present. It is no longer necessary to explain these methods of such data processing devices because all these components of the device according to the invention are known to the person skilled in the art.
Viele dieser Verfahren erlauben eine Bestimmung von Pos ti- onsanderungen mit einer Genauigkeit (Subpixelgenauigkeit) , deren Fehler wesentlich geringer ist als der Abstand der Sen- sorelemente (SE) der flachenhaften Anordnung gemäß Figur 1. Diese m der elektronischen Bildverarbeitung allgemein bekannte Tatsache macht sich die Erfindung nun zunutze, uir die Genauigkeit der Steuerung eines Cursors oder anderer Eigenschaften einer grafischen Benutzeroberflache oder ahnlicner Vorgange zu erhohen. Dies ist möglich, da aus den erheblich genaueren Positionsanderungsdaten (BV) mit Hilfe geeigneter Mittel (SEE) entsprechend genauere Eingabe- oder Steuersignale (ESS) erzeugt werden können. Solche Mittel werden im Normalfall einfache digitale Schaltungen sein, die - ogli- cherweise durch analoge Schaltungen und durch A/D- bzw. D/AWandler ergänzt - im einfachsten Fall Schaltungen zur Pegelanpassung oder Treiberschaltungen darstellen, aber auch kompliziertere Verarbeitungsschritte - z.B. eine geschwmdig- keitsabhangige Vergrößerung, etc. - mit Hilfe von Prozessoren beinhalten können.Many of these methods allow position changes to be determined with an accuracy (sub-pixel accuracy) whose error is significantly smaller than the distance between the sensor elements (SE) of the flat arrangement according to FIG. 1. This fact, which is generally known in electronic image processing, is evident Now use the invention to increase the accuracy of the control of a cursor or other properties of a graphical user interface or similar processes. This is possible because the more precise position change data (BV) can be used to generate correspondingly more precise input or control signals (ESS) with the aid of suitable means (SEE). Such means will normally be simple digital circuits, which - possibly supplemented by analog circuits and by A / D or D / A converters - represent circuits for level adjustment or driver circuits in the simplest case, but also more complicated processing steps - e.g. a speed-dependent enlargement, etc. - with the help of processors.
Zur Steuerung einiger komplexerer Vorgange wie z.B. der ferngesteuerten Bedienung von Manipulatoren ist eine weiterfuhrende Ausfuhrungsform der Erfindung besonders geeignet, oei der auch Änderungen der Drehlage (DW) erfaßt und zur Erzeugung von Eingabe- oder Steuersignalen verwendet werden. Dies erfordert zwar einen etwas höheren Rechenaufwand, kann aner ebenfalls mit an sich bekannten Algorithmen aus der elektronischen Bildverarbeitung realisiert werden. Bei dieser Aus¬ fuhrungsform der Erfindung ist eine besonders einfache und naturliche Steuerung der Orientierung von ausgedehnten Objek- ten einer grafischen Oberflache eines Gerätes möglich.A further embodiment of the invention is particularly suitable for controlling some more complex processes, such as the remote-controlled operation of manipulators, in which changes in the rotational position (DW) are also detected and used to generate input or control signals. Although this requires a little more computing effort, other can also be implemented using algorithms known per se from electronic image processing. In this off ¬ fuhrungsform of the invention is a particularly simple and natural controlling the orientation of extensive objectivity th a graphical surface of a device possible.
Eine besonders vorteilhafte Realisierung der Erfindung ist mit Hilfe eines Fingerabdruck-Sensors möglich. Dieser ist m vielen Geraten oft ohnehin zur Identifizierung oder Authenti- fikation des berechtigten Benutzers vorhanden. Dabei kann eine ortliche Auflosung von 0,05 mm leicht erreicht werden. Die Bestimmung der Positionsdaten kann leicht durch eine einfache Korrelation der zweidimensionalen Bilddaten des Fingerabdruckes des aufliegenden Finders mit einem abgespeicher- ten Finger erfolgen. Anstelle des Bildes selbst kommen auch extrahierte Bildmerkmale (Kanten, Ecken, etc.) in Frage. A particularly advantageous implementation of the invention is possible with the aid of a fingerprint sensor. In many devices, this is often available anyway for the identification or authentication of the authorized user. A local resolution of 0.05 mm can easily be achieved. The position data can be easily determined by simply correlating the two-dimensional image data of the fingerprint of the finder with a stored finger. Instead of the image itself, extracted image features (edges, corners, etc.) can also be used.

Claims

Patentansprüche claims
1. Eingabe- oder Steuervorrichtung (ESV) für Gerate, msbe- sondere für Informationsverarbeitungssysteme mit Mitteln1. Input or control device (ESV) for devices, especially for information processing systems with means
a) zur Erfassung von Positionsanderungen (BV) eines Fingers eines Systembenutzers oder eines von diesem geführten Zeige- mstruments und Mittelna) for recording changes in position (BV) of a finger of a system user or of a pointing instrument and means guided by the latter
b) zur Erzeugung (SEE) von Eingabe- oder Steuersignalen (ESS) aus diesen Positionsanderungen, gekennzeichnet durchb) for generating (SEE) input or control signals (ESS) from these position changes, characterized by
c) eine flachenhafte Anordnung (SA) geeigneter Sensoren (SE) , mit deren Hilfe bildhafte Merkmale der Oberflache des Fingers oder des Zeigeinstruments erfaßt werden undc) a flat arrangement (SA) of suitable sensors (SE), with the aid of which pictorial features of the surface of the finger or the pointing instrument are detected, and
d) einer Datenverarbeitungseinrichtung (DVE) zur Bestimmung von Positionsanderungen durch einen Vergleich dieser bildhaf- ten Merkmale oder daraus abgeleiteter Merkmale zu unterschiedlichen Zeitpunkten.d) a data processing device (DVE) for determining changes in position by comparing these pictorial features or features derived therefrom at different points in time.
2. Vorrichtung nach Anspruch 1 mit2. Device according to claim 1 with
a) Mitteln zur Erfassung von Drehlageanderungen (DW) eines Fingers eines Systembenutzers oder eines von diesem geführten Zeigemstruments unda) means for detecting changes in the rotational position (DW) of a finger of a system user or of a pointing instrument guided by the latter and
b) Mitteln zur Erzeugung von Eingabe- oder Steuersignalen aus diesen Drehlageanderungen undb) means for generating input or control signals from these changes in rotational position and
c) Mitteln zur Bestimmung von Drehlageanderungen durch einen Vergleich bildhafter Merkmale oder daraus abgeleiteter Merk- male zu unterschiedlichen Zeitpunkten. c) Means for determining changes in the rotational position by comparing pictorial features or features derived therefrom at different times.
3. Verfahren zur Erzeugung von Steuersignalen für Gerate mit folgenden Schritten:3. Method for generating control signals for devices with the following steps:
a) mit Hilfe einer flachenhaften Anordnung (SA) geeigneter Sensoren (SE) werden bildhafte Merkmale der Oberflache eines Fingers oder eines Zeigeinstruments erfaßt;a) with the help of a flat arrangement (SA) of suitable sensors (SE) pictorial features of the surface of a finger or a pointing instrument are detected;
b) mit Hilfe einer Datenverarbeitungseinrichtung (DVE) werden Positionsanderungen des Fingers oder des Zeigeinstruments durch einen Vergleich dieser bildhaften Merkmale oder daraus abgeleiteter Merkmale zu unterschiedlichen Zeitpunkten bestimmt .b) With the help of a data processing device (DVE) changes in position of the finger or the pointing instrument are determined by comparing these pictorial features or features derived therefrom at different times.
4. Verfahren nach Anspruch 3, bei dem auch Drehlageanderungen erfaßt werden. 4. The method according to claim 3, in which changes in the rotational position are also detected.
PCT/DE2000/000013 1999-01-14 2000-01-03 Input or control unit for devices and method for generating control signals for devices WO2000042493A1 (en)

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DE19901168 1999-01-14

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WO2001015067A1 (en) * 1999-08-23 2001-03-01 Siemens Aktiengesellschaft Method and device for inputting control signals
WO2002089047A1 (en) * 2001-04-27 2002-11-07 Siemens Aktiengesellschaft Operating unit, especially for operating a multimedia system in a motor vehicle
DE10337538A1 (en) * 2003-08-06 2005-02-24 E.G.O. Elektro-Gerätebau GmbH Apparatus and method for operating a cooking system
EP1626330A1 (en) * 2003-05-21 2006-02-15 Hitachi High-Technologies Corporation Portable terminal device with built-in fingerprint sensor

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Publication number Priority date Publication date Assignee Title
WO2001015067A1 (en) * 1999-08-23 2001-03-01 Siemens Aktiengesellschaft Method and device for inputting control signals
WO2002089047A1 (en) * 2001-04-27 2002-11-07 Siemens Aktiengesellschaft Operating unit, especially for operating a multimedia system in a motor vehicle
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EP1626330A1 (en) * 2003-05-21 2006-02-15 Hitachi High-Technologies Corporation Portable terminal device with built-in fingerprint sensor
EP1626330A4 (en) * 2003-05-21 2012-01-18 Hitachi High Tech Corp Portable terminal device with built-in fingerprint sensor
DE10337538A1 (en) * 2003-08-06 2005-02-24 E.G.O. Elektro-Gerätebau GmbH Apparatus and method for operating a cooking system

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