Stabilo International Gmbh

Other

Schwan-stabilo Schwanhäusser Gmbh & Co. Kg

Karl-Peter Kämpf

Jörg Rahn

Thiemo Daubner

Gerald Kollenda

Harald Winkler

A device for manual application of a liquid. The device may be used for painting, marking, drawing, writing and/or applying make-up to keratinous surfaces. The device includes a capillary store for the liquid, the capillary store having a filing level, and a measuring device for measuring the filing level of the capillary store.

Device for manual application of a liquid

A pen comprising a shaft, a gripping zone, and a measuring device having a sensor configured to measure a force acting on the gripping zone. The pen further comprises a cover in the area of the gripping zone, the cover configured to cover the measuring device.

The invention relates to Electronic pen () with pen position detection, comprising at least a writing lead, at least one electric voltage source, at least one digital processing unit, at least one data transfer module, and an inertial position detection sensor system for determining the location and movement of the electronic pen (), wherein the electronic pen () is configured for an initial specification of a writing coordinate system with two axes X, Y () being orthogonal to each other on a two-dimensional writing substrate () and with an axis Z being perpendicular to the two-dimensional writing substrate, characterized in that the inertial position detection sensor system is configured for the determination of accelerations and acceleration profiles of the electronic pen along the X-axis () and along the Y-axis () for a plurality of pairs of different axis orientations of the X-axis and Y-axis on the writing substrate (), whereby for each pair of axis orientations, the axis orientation of the X-axis () and the axis orientation of the Y-axis () are orthogonal to each other, and wherein the digital processing unit is configured for determining a writing direction based on the determination of at least one characteristic property of an acceleration profile () determined by the inertial position detection sensor system.

Determination of writing direction by means of inertial sensors

An electronic pen comprising pen position recognition means, comprising at least one electrical voltage source, at least one digital control unit, a force transmission element, and at least one force sensor for measuring a writing pressure force, characterized in that the electronic pen comprises at least one resilient means, and the at least one resilient means being configured to generate a force that opposes the pressure force acting on the at least one force sensor. Also disclosed are methods for preventing overloading of a force sensor for measuring a writing pressure force for an electronic pen.

Spring-type battery contact having sensor protection

The invention concerns a method to detect and evaluate movement patterns and pen positions of an electronic pen with inertial measurement sensors during writing on a two-dimensional writing substrate, comprising: &#x2022;an initial specification of two axes X, Y, that are orthogonal to each other on the writing substrate, and an axis Z that is perpendicular to the two-dimensional writing substrate, &#x2022;whereby the X-axis defines the predominant writing direction, as well as a compensation of undesired drift in the pen position signal of the electronic pen to be output, comprising: &#x2022;a moving average process during a predefined time interval and a predetermined frequency of the pen movements on the writing substrate, determined by the inertial measurement sensors during writing through integration of the sensor data of the measurement sensors, along the two said axes X, Y, that are orthogonal to each other, and a &#x2022;periodic comparison of currently determined moving average values with initial average values and/or with previously determined moving average values, as well as the &#x2022;subtraction of deviations, arising during said comparison between currently determined moving average values and initial average values and/or deviations between currently determined moving average values and previously determined moving average values from a pen position signal to be output.

Electronic pen implementing sensor drift compensation

The present invention relates to a method of recognizing and evaluating pen positions of an electronic pen with inertial measurement sensors during writing on a two-dimensional writing substrate, comprising: initially specifying a writing coordinate system with two axes X, Y (), which are orthogonal to each other, on the writing substrate () and an axis Z () perpendicular to the two-dimensional writing substrate (), the X axis () defining e.g. the predominant writing direction, and the writing substrate coordinates x, y being defined with respect to said writing coordinate system, and compensating an undesirable drift in the pen position signal of the electronic pen to be output, comprising executing in parallel a coordinate transformation of the azimuthal angle s () and of the inclination angle y () of the electronic pen () into writing substrate coordinates x, y.

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Röttenbach, Germany

Karl-Peter Kämpf