Grenoble, France
Grenoble, France
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The invention relates to a processing logic for determining a position of a virtual object on a display configured to: receive from one or more motion sensors motion signals representative of an orientation of a first device and/or a derivative thereof; obtain a first set of data representative of the orientation of the first device based on the motion signals; obtain a second set of data representative of the orientation of the first device based on the motion signals, said second set of data being different from the first set of data; calculate a first candidate position of the virtual object on a display based on the first set of data; calculate a second candidate position of the virtual object on the display based on the second set of data; select one of the first candidate position and the second candidate position as a position of the virtual object on the display.


A device for analyzing the movement of at least one moving element (EM), provided, for at least one moving element, with first means (DET1) for determining the orientation of a moving coordinate frame (Rm) connected in motion to the moving element (EM), with respect to a reference coordinate frame (Rr), including second means (DET2) for determining at least one locus of points (T_(x), T_(y), T_(z)) of at least one surface from at least one respective direction of an oriented axis (x, y, z) of the moving coordinate frame (Rm) connected in motion to the moving element (EM) and said surface


Method for estimating a position of a ball impact on a racket string bed, along the longitudinal axis (Y) of the racket (1), from data provided by a proximity sensor unit. The proximity sensor unit may comprise an acceleration sensor or an optical sensor to determine the ball impact. In addition, the ball impact along the transversal axis (X) of the racket (1) may be determined based on gyrometer data.


Patent
Movea Inc | Date: 2015-07-15

The invention discloses a 3D pointing device and a method to control an object on a surface and improve the user experience when the user moves the object beyond the limits of the surface where the object can no longer be visualized. The user experience is enhanced by defining the behaviour of a cursor in a margin around the screen.


A method of location of a device includes a displacement law containing a corrective factor of a bias combined by an arithmetical operation with a measured variable, and particles, each particle being associated with a current value of the corrective factor. The current value of the corrective factor being constructed at each iteration on the basis of a previous current value of the corrective factor, computed during a previous iteration, to which is added a random variable drawn according to a predefined probability law. The current values of various particles are initialized, before the first iteration, to various initial values, and during each iteration, for each particle whose coordinates are updated with the aid of this displacement law, the value of the corrective factor in the displacement law is taken equal to this corrective factors current value associated with the particle.


A method of location of a device comprises providing a map containing several distinct zones, each distinct zone being associated with a displacement law from among a set of several different displacement laws. The displacement law associated with a zone making it possible to estimate more precisely, on the basis of the same measurements received, the direction and the amplitude of the displacement of the device when the latter is situated inside the zone than if any one of the other displacement laws of the set were used. The method also includes an operation of identifying the zone inside which a particle is situated, and then, an operation of using, for the updating of the coordinates of the particle, of just the displacement law associated with the zone identified during the identification operation.


A method of location of a device includes the provision of a map containing at least one zone with favored direction of displacement associated with a favored direction of displacement. The method includes an operation of detecting the presence of a particle inside the zone. If the particle is detected as being present inside the zone, an operation of increasing a weight of the particle if the angular deviation between the direction of displacement of the particle from a position P_(k-1)^(i )to a position P_(k)^(i )and the favored direction of displacement associated with this zone is equal to 0 or to 180 to within plus or minus _(). If the particle is detected as being outside of this zone, the method includes prohibiting the use of this favored direction of displacement to update the weight of the particle.


Patent
Movea Inc and French Atomic Energy Commission | Date: 2015-02-20

A system for observing a walking activity of a person comprises a device (DISP) adapted for delivering at output, for a footstep of the person, a first difference of angular speeds of the corresponding tibia between the instant at which the heel of the foot is planted and the instant at which the foot is laid flat, a second difference of angular speeds of the corresponding tibia between the instant at which the heel of the foot is planted and the instant at which the last toe of the foot is lifted, and an angular speed of the corresponding tibia at the instant at which the foot is laid flat. The system comprises analysis means (AN) for analyzing the signals delivered by the device and adapted for determining a type of walking of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of walking


The invention discloses a method, a device and a system to build and/or use models for estimating behaviours of, or situations of interest to users. Said users have a device which is configured to capture at least a first dataset of sensor data in relation to the behaviour or situation. A set of processing capabilities is configured to capture first datasets comprising sensor data and second datasets comprising annotated data in relation to the behaviour or situation and to further configure at least a model. The device is further configured to adjust parameters of the at least a model to the characteristics of the user or of a group of users. The invention allows for an improvement over the prior art by allowing collection of a vast amount of data that will optimize the fit of the models to the behaviour or situation.


The invention relates to a portable device to monitor at least an activity of a user. The portable device comprises at least a first sensor configured to capture signals representative of at least a physical parameter induced by at least an activity of the user, and a channel of communication to processing capabilities. The processing capabilities are configured to perform a first classification algorithm to classify the signals representative of the at least a physical parameter over a first period of time into a first set of classes of activities of the user, and to perform a second classification algorithm to classify the at least an activity of the user at the output of the at least first classification algorithm over a second period of time which includes the first period of time using a second set of classes which is different from the first set of classes. The invention also relates to a method to monitor, a computer program and a system to monitor at least an activity of a user.

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