Advanced Magnetic Interaction, Ami

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Jean-Marie Dupre La Tour

Tristan Hautson

Franck Vial

Saifeddine Aloui

Sébastien Brulais

Laure Peris Y Saborit

Simon Thomas

Myrna Jaillet-Casillas

Guilhem Sauvagnac

The invention relates to a method for tracking an end of a utensil equipped with a magnetic object, wherein a parameter K(tn) representative of a contact between the end and a reference surface of a touch sensor is determined, and when contact is detected: an actual value D(k+1) of the distance Dbetween the end and the magnetic object is determined, on the basis of a value DI(k+1) of a distance, referred to as the projected distance DI between the position PA(tn) of the magnetic object and a position PI(tn) of a point of intersection between the reference surface and a straight line collinear with the magnetic moment m(tn), then the recorded value of the distance Dis updated on the basis of the actual determined value D(k+1) of the distance D

Method and device for tracking an end of a utensil comprising a recalibration of a distance between the end and a magnetic object securely fastened to the utensil

The invention relates to a system for recording a track comprising: a utensil comprising a tip and equipped with a magnetic object; a device for locating the magnetic object configured to determine an estimated reference position on a writing surface; and a matrix-array touch sensor configured to define a set of M pixels, among N pixels, at least partially encircling the estimated reference position, and to detect the contact of the tip on the writing surface on the basis of the electrical signals generated by said set of M pixels.

System for recording a track traced by a utensil over a writing surface

The present disclosure relates to a method for estimating the position of a magnet using a tracking device comprising an array of magnetometers, the method comprising phases of determining an initial state vector associated with the magnet, of measuring a useful magnetic field, of estimating a magnetic field, of calculating a bias between the measured magnetic field and the estimated magnetic field, and of updating the state vector on the basis of the bias. It also comprises an identifying phase comprising a step of identifying a magnetic disturbance on the basis of an indicator calculated depending on an estimated magnetic field and a measured magnetic field.

Method for estimating the position of a magnet comprising a phase for identifying a magnetic disturbance

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Meylan, France

Jean-Marie Dupre La Tour