Abstract: A permanent magnet assembly including of at least two sub magnets for a user-borne device. The at least two sub-magnets each have a magnet body defining a respective longitudinal axis. Each sub-magnet creates a magnetic field and has a respective magnetic moment vector associated to the respective sub-magnet. At least one magnetic moment vector is inclined relative to the respective longitudinal axis. Two adjacent sub-magnets of the at least two sub-magnets are attached together to form a main body of the permanent magnet assembly. The at least two sub-magnets are arranged coaxial to each other and are rotationally oriented relative to each other such that the assembly magnetic moment vector is less or equally inclined relative to the main body longitudinal axis than a weighted average inclination of the magnetic moment vectors of the at least two sub-magnets.

Abstract: An electronic device, wherein the electronic device includes an enclosure, wherein a spatial extent of the enclosure is characterised by an orthogonal set of dimensions defining a reference coordinate system, and the enclosure includes at least a user interaction portion in a user interaction plane at a reference height above a base portion of the enclosure; a first plurality of magnetometers defining a first magnetometer plane, wherein the first plurality of magnetometers is encompassed by the enclosure; wherein the first plurality of magnetometers is arranged in a first magnetometer mounting region of the enclosure, wherein an upper boundary of the first magnetometer mounting region is provided by the user interaction portion, and a lateral boundary of the first magnetometer mounting region is separated from a plurality of side walls of the enclosure by a corresponding plurality of distances in the length and/or width directions.

Abstract: A peripheral device including a support defining a peripheral coordinate system of the peripheral device, wherein the peripheral device has a longitudinal, transverse and vertical extent, a plurality of magnetometers disposed on the support, a controller communicably coupled to the plurality of magnetometers, and a communication interface communicably coupled to the controller.

Abstract: An electronic device (10, 800) configured to obtain user interactions from a user-borne device (100) comprising at least one magnetic object (110), wherein the electronic device (10, 800) comprises an enclosure (12) comprising a plurality of surfaces (14, 16, 18, 20), wherein the enclosure (12) defines a mounting region of a plurality of components, and a first plurality of magnetometers (MA1) relative to a reference coordinate system of the enclosure (12), wherein the first plurality of magnetometers (MA1) is encompassed by the enclosure (12). The first plurality of magnetometers (MA1) is located within a first portion (14a) of the enclosure (12), wherein the location of the first portion (14a) is within a first outer boundary plane coterminous with a first surface (14) of the enclosure (12), and a first inner boundary plane (14b) parallel to the first outer boundary plane.

Abstract: A user-borne device includes a housing and a magnetic object coupled to the housing. The magnetic object has a magnetization direction and the magnetic object is configured to create a magnetic field associated with the magnetization direction. The magnetization direction is oriented with respect to the magnetic object such that a rotation of the magnetic object about a first rotation axis, a second rotation axis and a third rotation axis, which are orthogonal with respect to each other, is detectable based on magnetic field measurements with a plurality of magnetometers. The user-borne device is configured to control at least one trigger event based on a rotation of the magnetic object about the first rotation axis, the second rotation axis and/or the third rotation axis.

Abstract: A system for determining a manipulation of a user-borne device by a user including a user-borne device including a body, at least one magnetic object defining a magnetic moment vector and operationally coupled to the body such that a rotation of the body about a first rotation axis causes a rotation of the at least one magnetic object about the first rotation axis, a plurality of magnetometers associated with an interaction surface, wherein the plurality of magnetometers is configured to create a sensing volume and configured to measure a magnetic field associated with the at least one magnetic object, wherein the system is configured to register a scroll event when a rotation of the body about the first rotation axis is determined by the system on the basis of the measured magnetic field associated with the at least one magnetic object.

Abstract: A computer-implemented method for controlling a representation of a user-borne device with respect to one or more output devices includes obtaining magnetic field measurements associated with at least one magnetic object coupled to a user-borne device and measured with a plurality of magnetometers. The method further includes obtaining output device location data indicative of an output device location of one or more output devices relative to the plurality of magnetometers. In addition, the method includes determining a user-borne device location based on the collected magnetic field measurements and determining a pointing location of the user-borne device relative to the one or more output devices. Furthermore, the method includes determining that the user-borne device is interacting on one output device of the one or more output devices based on the determined pointing location.

Abstract: An electronic interactive device includes an interaction surface for use with a user borne device. The interaction surface includes a contact detection surface for detecting a device contact event with the interaction surface; a plurality of magnetometers defining a reference coordinate system and a sensing volume proximate to the interaction surface, with each of the magnetometers having a rigid spatial relationship to the other magnetometers; and processing circuitry communicably coupled to at least the contact detection surface and the plurality of magnetometers. The plurality of magnetometers perform magnetic field measurements and provide measurement data to the processing circuitry. The processing circuitry determines at least one of position and/or magnet orientation relative to a longitudinal axis of the user borne device and a distance separating the magnet and/or magnet orientation relative to a longitudinal axis of the user borne device from the interaction surface when the contact event occurs.

Abstract: An electronic interactive device includes an interaction surface for use with a user borne device. The interaction surface includes a contact detection surface for detecting a device contact event with the interaction surface; a plurality of magnetometers defining a reference coordinate system and a sensing volume proximate to the interaction surface, with each of the magnetometers having a rigid spatial relationship to the other magnetometers; and processing circuitry communicably coupled to at least the contact detection surface and the plurality of magnetometers. The plurality of magnetometers perform magnetic field measurements and provide measurement data to the processing circuitry. The processing circuitry determines at least one of position and/or magnet orientation relative to a longitudinal axis of the user borne device and a distance separating the magnet and/or magnet orientation relative to a longitudinal axis of the user borne device from the interaction surface when the contact event occurs.

Abstract: 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 D1(k+1) of the distance D1 between the end and the magnetic object is determined, on the basis of a value D1I(k+1) of a distance, referred to as the projected distance D1I 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 D1 is updated on the basis of the actual determined value D1(k+1) of the distance D1.

Abstract: 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 D1(k+1) of the distance D1 between the end and the magnetic object is determined, on the basis of a value D1I(k+1) of a distance, referred to as the projected distance D1I 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 D1 is updated on the basis of the actual determined value D1(k+1) of the distance D1.

Abstract: 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.

Abstract: 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.

Abstract: 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.