WO2005066753A1 - Electronic notepad - Google Patents

Electronic notepad Download PDF

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Publication number
WO2005066753A1
WO2005066753A1 PCT/EP2004/052455 EP2004052455W WO2005066753A1 WO 2005066753 A1 WO2005066753 A1 WO 2005066753A1 EP 2004052455 W EP2004052455 W EP 2004052455W WO 2005066753 A1 WO2005066753 A1 WO 2005066753A1
Authority
WO
WIPO (PCT)
Prior art keywords
stylus
particles
display device
counter electrode
display
Prior art date
Application number
PCT/EP2004/052455
Other languages
German (de)
French (fr)
Inventor
Ralf Hying
Marco Werner
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 WO2005066753A1 publication Critical patent/WO2005066753A1/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting

Definitions

  • the invention relates to an electronic note sheet according to the preamble of claim 1.
  • a normal paper sheet is used to display the content of electronic note boards. This poses the problem that what has been drawn cannot be corrected or deleted with simple means. A paper supply must also be available.
  • a particular advantage of the electronic note sheet according to the invention lies in the use of electrophoretic films not only as a display for displaying digital image content, but also for displaying handwritten notes.
  • a fully electronic note board with a connection to digital devices can be set up that looks and feels like a "real" notepad.
  • the method according to the invention can be used wherever note paper is to be replaced by an electronic counterpart.
  • the combination of this with one of the known methods for pen position detection is particularly interesting for devices that digitize handwritten notes or drawings.
  • Figure 1 shows the operation of an electrophoretic display
  • Figure 2 shows the writing process with such a display.
  • the electronic note sheet according to the invention preferably uses a so-called electrophoretic display film to display the handwritten content.
  • electrophoretic display film Some companies around the world are currently developing electronic displays that use electrophoresis to display image content.
  • the functional principle of an electrophoretic display film EF is shown schematically in FIG. 1.
  • the electrophoretic display film EF has microchambers filled with a solution.
  • the solution contains, for example, negatively charged particles (FIG. 1 a), which move under the action of an electric field, depending on its polarity, to the top (FIG. 1 c) or bottom (FIG. 1 b) of the film EF.
  • FOG. 1 a negatively charged particles
  • FIG. 1 c top
  • FIG. 1 b bottom
  • the film EF For the observer, either the color of the solution (black) or the color of the particles (white) is visible on a display surface, for example the top of the film. The respective position of the particles is maintained until the next time the field is created.
  • a device shown in FIG. 2 is used for the writing process.
  • An electrical voltage is applied between a metallic tip of an input pen ES and a flat counter electrode GE attached under the film EF.
  • a first voltage source B1 and, for a further development of the invention, a second voltage source B2 are provided as the voltage source, for example, both voltage sources B1 and B2 being connected to the pin ES and alternatively to the counter electrode GE via a changeover switch US.
  • this writing effect can be reversed into an erasing effect by inverting the voltage applied between counter electrode GE and pen tip (ES) and thus bringing the particles in the film to their surface.
  • the changeover switch US is in a position in which the voltage source B1 is present with its negative pole on the counter electrode GE.
  • the voltage sources B1 and B2 can be accommodated in a housing which also contains the display film EF. However, it is also possible to accommodate the voltage sources B1 and B2 in the stylus ES, which then also contains the switch US. As a result, the housing for the display film EF can be kept comparatively flat.
  • the tip of the pin ES can be widened in particular for the deletion process. This can be done by swapping or switching the width of the pen tip.

Abstract

The invention relates to electronic notepad for hand-written input. According to the invention, a display device (EF), comprising particles in a first colour and particles in a second colour, which can be positioned on a display surface of the display device (EF) over an adjacent electric field, is provided and the positioned particles maintain the positions thereof until the next field application. Also, a counter electrode (GE), which is arranged on one side of the display device (EF), and an input pen (ES), which can be positioned in a displaceable manner on the opposite side, are provided in order to produce a local field by means of a supply source (B1, B2) which is mounted between the input pen (ES) and the counter electrode (GE).

Description

Beschreibungdescription
Elektronisches NotizblattElectronic note sheet
Die Erfindung betrifft ein elektronisches Notizblatt gemäss dem Oberbegri f des Patentanspruchs 1.The invention relates to an electronic note sheet according to the preamble of claim 1.
In vielen Bereichen des Alltags werden von Hand gefertigte Zeichnungen oder Notizen zur Informations-Übertragung oder - speicherung benutzt. Dieses Vorgehen ist mit einigen Nachteilen behaftet, z.B. der Aufwand ständig für Ersatzpapier sorgen zu müssen, und die fehlende Möglichkeit, Geschriebenes beziehungsweise Gezeichnetes zu löschen.In many areas of everyday life, hand-made drawings or notes are used to transfer or store information. This procedure has some disadvantages, e.g. the effort of constantly having to provide replacement paper and the lack of the ability to delete what was written or drawn.
Auf dem Markt gibt es elektronische Notiz-Boards. Diese bestehen aus einem herkömmlichen Schreibblock, auf dem mit einem speziellen Stift geschrieben oder gezeichnet wird. Die Stiftposition auf dem Papier wird ständig erfasst und ermöglicht so eine Digitalisierung der Zeichnung. Dieses Stift- Tracking wird mit Hilfe von akustischen (Ultraschall) , optischen (Infrarotstrahlung) oder induktiven Verfahren realisiert.There are electronic note boards on the market. These consist of a conventional writing pad on which a special pen is used to write or draw. The position of the pen on the paper is constantly recorded and thus enables the drawing to be digitized. This pen tracking is implemented with the help of acoustic (ultrasound), optical (infrared radiation) or inductive processes.
Zur Darstellung des Inhalts dient bei elektronischen Notiz- Boards ein normales Papierblatt. Dies birgt das Problem, dass Gezeichnetes nicht mit einfachen Mitteln korrigiert oder gelöscht werden kann. Des Weiteren muss ein Papiervorrat vorhanden sein.A normal paper sheet is used to display the content of electronic note boards. This poses the problem that what has been drawn cannot be corrected or deleted with simple means. A paper supply must also be available.
Weiter existieren Grafiktabletts für professionelle Cad-There are also graphics tablets for professional CAD
Anwendungen, die sich einer der Stift-Tracking Methoden bedienen, um Handzeichnungen zu digitalisieren. Allerdings ist bei dieser Geräteklasse das Gezeichnete nicht auf dem digitalisierenden Gerät selber sichtbar. Der Erfindung liegt die Aufgabe zu Grunde ein elektronisches Notiz-Board anzugeben, bei dem Korrekturen und Löschungen einfach vorzunehmen sind.Applications that use one of the pen tracking methods to digitize hand drawings. However, with this device class, the drawing is not visible on the digitizing device itself. The invention is based on the object of specifying an electronic note board in which corrections and deletions can be carried out easily.
Diese Aufgabe wird erfindungsgemäß durch die im Patentanspruch 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in claim 1.
Ein besondere Vorteil des erfindungsgemäßen elektronischen Notizblattes liegt in der Nutzung von elektrophoretischen Fo- lien nicht nur als Display zur Anzeige digitaler Bildinhalte, sondern für die Darstellung handgeschriebener Notizen. In einer Kombination mit einem der vorstehend beschriebenen Verfahren zur Stiftpositionserkennung kann so ein voll elektronisches Notizboard mit Verbindung zu digitalen Geräten aufge- baut werden, das vom Look & Feel her einem "echten" Notizblock gleich kommt.A particular advantage of the electronic note sheet according to the invention lies in the use of electrophoretic films not only as a display for displaying digital image content, but also for displaying handwritten notes. In combination with one of the above-described methods for pen position detection, a fully electronic note board with a connection to digital devices can be set up that looks and feels like a "real" notepad.
Das erfindungsgemäße Verfahren kann überall genutzt werden, wo Notizpapier durch ein elektronisches Pendant ersetzt wer- den soll. Die Kombination dessen mit einem der bekannten Verfahren zur Stiftpositionserkennung ist insbesondere für Geräte interessant, die handschriftliche Notizen o- der Zeichnungen digitalisieren.The method according to the invention can be used wherever note paper is to be replaced by an electronic counterpart. The combination of this with one of the known methods for pen position detection is particularly interesting for devices that digitize handwritten notes or drawings.
Im Folgenden wird die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispiele beschrieben. Dabei zeigen:The invention is described below using an exemplary embodiment shown in the drawing. Show:
Figur 1 die Wirkungsweise eines Elektrophoretischen Displays, undFigure 1 shows the operation of an electrophoretic display, and
Figur 2 den Schreibvorgang mit einem solchen Display.Figure 2 shows the writing process with such a display.
Das erfindungsgemäße elektronische Notizblatt verwendet vorzugsweise eine sogenannte elektrophoretische Displayfolie zur Darstellung des handschriftlich eingegebenen Inhalts. Derzeit entwickeln weltweit einige Firmen elektronische Displays, die sich der Elektrophorese zur Darstellung von Bildinhalten bedienen. Das Funktionsprinzip einer elektrophoretischen Displayfolie EF ist in Figur 1 schematisch dargestellt.The electronic note sheet according to the invention preferably uses a so-called electrophoretic display film to display the handwritten content. Some companies around the world are currently developing electronic displays that use electrophoresis to display image content. The functional principle of an electrophoretic display film EF is shown schematically in FIG. 1.
Die elektrophoretischen Displayfolie EF weist mit einer Lösung gefüllte Mikrokammern auf. Die Lösung enthält beispielsweise negativ geladene Partikel (Figur 1 a) , die sich unter Einwirkung eines elektrischen Feldes je nach dessen Polarität an die Ober- (Figur 1 c) oder Unterseite (Figur 1 b) der Folie EF bewegen. Für den Betrachter wird somit auf einer An- zeigefläche, beispielsweise die Oberseite der Folie, entweder die Farbe der Lösung (schwarz) oder die Farbe der Partikel (weiss) sichtbar. Die jeweilige Position der Partikel wird bis zum nächstmaligen Anlegen des Feldes beibehalten.The electrophoretic display film EF has microchambers filled with a solution. The solution contains, for example, negatively charged particles (FIG. 1 a), which move under the action of an electric field, depending on its polarity, to the top (FIG. 1 c) or bottom (FIG. 1 b) of the film EF. For the observer, either the color of the solution (black) or the color of the particles (white) is visible on a display surface, for example the top of the film. The respective position of the particles is maintained until the next time the field is created.
Für den Schreibvorgang wird beispielsweise eine in Figur 2 dargestellte Vorrichtung verwendet.For example, a device shown in FIG. 2 is used for the writing process.
Als Schreibfläche dient die schon beschriebene elektrophore¬ tische Folie EF. Zwischen einer metallischen Spitze eines Eingabestiftes ES und einer unter der Folie EF angebrachten flächigen Gegenelektrode GE wird eine elektrische Spannung angelegt.The already described electrophores ¬ diagram film EF serving as a writing surface. An electrical voltage is applied between a metallic tip of an input pen ES and a flat counter electrode GE attached under the film EF.
Als Spannungsquelle sind beispielsweise eine erste Spannungsquelle Bl sowie für eine Weiterbildung der Erfindung eine zweite Spannungsquelle B2 vorgesehen, wobei beide Spannungsquellen Bl und B2 mit dem Stift ES und über einen Umschalter US wahlweise mit der Gegenelektrode GE verbunden sind.A first voltage source B1 and, for a further development of the invention, a second voltage source B2 are provided as the voltage source, for example, both voltage sources B1 and B2 being connected to the pin ES and alternatively to the counter electrode GE via a changeover switch US.
So wird zwischen der Stiftspitze (ES) und der Gegenelektrode GE lokal ein elektrisches Feld erzeugt, das wie oben erklärt die enthaltenen Partikel auf die Unterseite der Folie zieht und so die Oberfläche an dieser Stelle in der Farbe der Lösung erscheinen lässt. Durch das lokale elektrische Feld werden die (hellen) Partikel zur Gegenelektrode GE gezogen, und der Betrachter sieht entlang der Schreibspur des Stiftes ES die dunkle Farbe der Flüssigkeit. Hierbei ist angenommen, dass die hellen Partikel negativ geladen sind.In this way, an electrical field is generated locally between the pen tip (ES) and the counter electrode GE, which, as explained above, pulls the particles it contains onto the underside of the film and so the surface at this point appears in the color of the solution. The (bright) particles are drawn to the counter electrode GE by the local electric field, and the viewer sees the dark color of the liquid along the writing trace of the pen ES. It is assumed that the light particles are negatively charged.
Diesen Schreibeffekt kann man bei einer Weiterbildung der Erfindung in einen Löscheffekt umkehren, indem man die zwischen Gegenelektrode GE und Stiftspitze (ES) angelegte Spannung invertiert und so die Partikel in der Folie an deren Oberfläche bringt. In diesem Fall befindet sich der Umschalter US in ei- ner Position, in der die Spannungsquelle Bl mit ihrem negativen Pol an der Gegenelektrode GE anliegt.In a further development of the invention, this writing effect can be reversed into an erasing effect by inverting the voltage applied between counter electrode GE and pen tip (ES) and thus bringing the particles in the film to their surface. In this case, the changeover switch US is in a position in which the voltage source B1 is present with its negative pole on the counter electrode GE.
Die Spannungsquellen Bl und B2 können in einem Gehäuse untergebracht sein, das auch die Displayfolie EF enthält. Es ist aber auch möglich, die Spannungsquellen Bl und B2 im Eingabestift ES unterzubringen, der dann sinnvollerweise auch den Umschalter US enthält. Hierdurch kann das Gehäuse für die Displayfolie EF vergleichsweise flach gehalten werden.The voltage sources B1 and B2 can be accommodated in a housing which also contains the display film EF. However, it is also possible to accommodate the voltage sources B1 and B2 in the stylus ES, which then also contains the switch US. As a result, the housing for the display film EF can be kept comparatively flat.
Mit diesen Mechanismen ist es möglich, auf der elektrophoretischen Folie EF zu "schreiben" sowie Teile des bereits Geschriebenen gezielt wieder zu löschen.With these mechanisms it is possible to "write" on the electrophoretic film EF and to delete parts of what has already been written.
Bei einer Ausgestaltung der Erfindung kann die Spitze des Stiftes ES insbesondere für den Löschvorgang verbreitert werden. Dies kann durch einen Tausch oder durch ein Umschalten der Breite der Stiftspitze erfolgen.In one embodiment of the invention, the tip of the pin ES can be widened in particular for the deletion process. This can be done by swapping or switching the width of the pen tip.
Unabhängig von dem beschriebenen erfindungsgemäßen Mechanis- mus ist es weiter möglich, die Stiftposition wie bereits beschrieben zu erfassen und so das Geschriebene zu digitalisieren. Regardless of the mechanism according to the invention described, it is also possible to detect the pen position as already described and thus to digitize the writing.

Claims

Patentansprüche claims
1. Elektronisches Notizblatt für eine handschriftliche Eingabe, g e k e n n z e i c h n e t d u r c h eine Anzeigeeinrichtung (EF) , die Partikel in einer ersten Farbe und über ein anliegendes elektrisches Feld auf einer Anzeigefläche der Anzeigeeinrichtung (EF) positionierbare Partikel in einer zweiten Farbe aufweist, wobei die positio- nierten Partikel ihre Positionen bis zum nächstmaligen Anlegen des Feldes beibehalten, und eine an einer Seite der Anzeigeeinrichtung (EF) angeordnete Gegenelektrode (GE) und einen an der gegenüberliegenden Seite beweglich positionierbaren Eingabestift (ES) zur Erzeugung eines lokalen Feldes über eine zwischen Eingabestift (ES) und Gegenelektrode (GE) geschaltete Spannungsquelle (Bl, B2) .1. Electronic note sheet for handwritten input, characterized by a display device (EF) which has particles in a first color and particles which can be positioned on a display surface of the display device (EF) in a second color by means of an applied electric field, the positioned particles maintain their positions until the next time the field is created, and a counter electrode (GE) arranged on one side of the display device (EF) and a stylus (ES) movable on the opposite side for generating a local field via a between stylus (ES) and Counter electrode (GE) switched voltage source (Bl, B2).
2. Elektronisches Notizblatt gemäss Anspruch 1, d a d u r c h g e k e n n z e i c h n e t d a s s die Anzeigeeinrichtung (EF) ein elektrophoretisches Display aufweist.2. Electronic note sheet according to claim 1, the display device (EF) has an electrophoretic display.
3. Eingabestift (ES) zur Verwendung mit einem elektronischen Notizblatt gemäss Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t d a s s im Eingabestift (ES) die Spannungsquelle (Bl, B2) vorgesehen ist, die über einen ebenfalls im Eingabestift (ES) angeordneten Umschalter (US) mit wechselnder Polarität mit der Gegenelektrode (GE) verbindbar ist.3. stylus (ES) for use with an electronic note sheet according to claim 1 or 2, characterized in that in the stylus (ES) the voltage source (B1, B2) is provided, which also has a switch (US) arranged in the stylus (ES) with changing polarity can be connected to the counter electrode (GE).
4. Eingabestift (ES) gemäss Anspruch 3, d a d u r c h g e k e n n z e i c h n e t d a s s die Schreibspitze des Eingabestiftes (ES) in ihrer Breite änderbar ausgebildet ist. 4. stylus (ES) according to claim 3, so that the width of the stylus of the stylus (ES) can be changed.
PCT/EP2004/052455 2004-01-05 2004-10-06 Electronic notepad WO2005066753A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001105 2004-01-05
DE102004001105.2 2004-01-05

Publications (1)

Publication Number Publication Date
WO2005066753A1 true WO2005066753A1 (en) 2005-07-21

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591083A1 (en) * 1992-09-28 1994-04-06 International Business Machines Corporation Method and apparatus for interacting with a user interface for a pen-based computing system
EP0942405A2 (en) * 1998-03-10 1999-09-15 Xerox Corporation Charge retention islands for electric paper and applications thereof
EP1024540A2 (en) * 1999-01-29 2000-08-02 Seiko Epson Corporation Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer
US6177921B1 (en) * 1997-08-28 2001-01-23 E Ink Corporation Printable electrode structures for displays

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591083A1 (en) * 1992-09-28 1994-04-06 International Business Machines Corporation Method and apparatus for interacting with a user interface for a pen-based computing system
US6177921B1 (en) * 1997-08-28 2001-01-23 E Ink Corporation Printable electrode structures for displays
EP0942405A2 (en) * 1998-03-10 1999-09-15 Xerox Corporation Charge retention islands for electric paper and applications thereof
EP1024540A2 (en) * 1999-01-29 2000-08-02 Seiko Epson Corporation Piezoelectric transducer and electrophoretic ink display apparatus using piezoelectric transducer

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