Abstract: A step detection method comprises the following steps: a) based on at least one signal coming from at least one motion sensor rigidly attached to a portable device, detect events suitable to correspond to steps of a user carrying the portable device; b) based on at least one signal, or on at least one signal coming from another sensor also rigidly attached to the portable device, identify intervals of time during which the device is being manipulated; and c) identify as steps those, from amongst the events detected, which do not coincide with the intervals of time. A device for the implementing such a method, a mobile telephone and touchscreen tablet comprising such a device are also provided.

Abstract: A method for detecting a manipulation of a mobile device, comprises the following steps: a) determining, by means of a sensor, the orientation of the vertical direction in a reference frame tied to the mobile device at a plurality of successive instants; b) calculating, for each instant, the angle formed by the orientation of the vertical direction in the reference frame and a reference orientation, and c) detecting a manipulation when the angle exceeds a first threshold. An apparatus for detecting a manipulation of a mobile device comprises: a sensor for measuring the orientation of a vertical direction in a reference frame tied to the mobile device, and a processor connected to the sensor configured or programmed to implement such a method. A mobile phone comprising such an apparatus is also provided.

Abstract: A method for locating an object by a reference grid, the object moving in a plane parallel to or identical to that of the grid. When crossing of a line of the grid is detected by the object, its heading is determined and, as a function of the detection, probabilities of the thus crossed line being a horizontal line and a vertical line respectively are obtained. Displacement of the object is assessed from the probabilities obtained and a horizontal and vertical pitch of the grid. A position of the object is then updated from a position of the object determined during a last line crossing of the grid and the displacement thus assessed.

Abstract: A method estimating orientation of a path followed by a carrier of a movement sensor includes: determining an orientation of the movement sensor with respect to the path; estimating an orientation of the movement sensor with respect to a fixed reference; estimating an orientation of the path with respect to the fixed reference by the determined orientation of the movement sensor and the estimated orientation of the movement sensor; detecting start and end of a phase of disorientation of the movement sensor with respect to the path; updating, after the detected end of the disorientation phase, determined orientation of the movement sensor with respect to the path by orientation of the path with respect to the fixed reference as estimated at the detected start of the disorientation phase and orientation of the movement sensor with respect to the fixed reference as estimated after the detected end of the disorientation phase.

Abstract: 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.

Abstract: 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 factor's current value associated with the particle.

Abstract: 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 Pk-1i to a position Pki 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.

Abstract: A method for locating an object by a reference grid, the object moving in a plane parallel to or identical to that of the grid. When crossing of a line of the grid is detected by the object, its heading is determined and, as a function of the detection, probabilities of the thus crossed line being a horizontal line and a vertical line respectively are obtained. Displacement of the object is assessed from the probabilities obtained and a horizontal and vertical pitch of the grid. A position of the object is then updated from a position of the object determined during a last line crossing of the grid and the displacement thus assessed.

Abstract: A method for integrating signals transmitted from a transmitter to at least one ultra wide band receiver, includes initializing a measurement by estimating an initial clock drift ?DHinit between said transmitter and said at least one ultra wide band receiver, thereby generating an estimated clock drift, executing an iterative loop, wherein executing said iterative loop comprises integrating at least one received primary signal, said at least one received primary signal composed of at least two samples, wherein integrating said at least one received primary signal comprises a first integration, and at least one of a second integration and a third integration, wherein said first integration uses said estimated clock drift, said second integration uses said estimated clock drift increased by a predetermined value, and said third integration uses said estimated clock drift decreased by a predetermined value, and selecting from among said integrations an integration that maximizes a quality criterion.

Abstract: A self-contained device intended to be carried by a wheel-tire assembly in order to locate whether the assembly is positioned on the right side or on the left side of a vehicle is described. The device includes two magnetic sensors with axes of maximum sensitivity, the sensors providing two periodic signals that are phase shifted relative to one another. Each signal is representative of variations in the magnitude of the magnetic field detected by the sensor during a revolution of the wheel-tire assembly. The device also includes a processing unit programmed to determine, from the phase shift between the two periodic signals, a direction in which the wheel-tire assembly is rotating and to deduce, from this direction of rotation and from a direction of travel of the vehicle, whether the wheel-tire assembly is located on the right side or on the left side. The two magnetic sensors are intended to be positioned on the wheel-tire assembly at distinct azimuthal locations.

Abstract: The invention relates to a method and a device for integrating signals transmitted from a transmitter (1) to at least one Ultra Wide Band (UWB) receiver (3), characterized in that the measurement is initialized beforehand by estimating an initial clock drift ?DHinit between the transmitter (1) and the receiver (2), an iterative loop is carried out during which: a step of integrating at least one primary signal received composed of at least two samples is carried out during which at least one first integration is carried out using the estimated clock drift and at least one second and one third integration are carried out respectively increased and decreased by a predetermined value, from among the said at least three integrations is selected that one which maximizes a quality criterion, and, if appropriate, the clock drift is adapted to that corresponding to the integration selected.

Abstract: A location device is provided, in which the device is configured to be carried by a tire and wheel assembly so as to locate a right or left position of the assembly in a vehicle. The device includes two magnetic sensors with axes of maximum sensitivity; a measurement circuit for measuring a signal across terminals of each of the magnetic sensors, the measurement circuit being able to deliver two periodic signals phase-shifted with respect to one another and each periodic signal being representative of variations in values of a magnetic field detected by a corresponding magnetic sensor during a revolution of the tire and wheel assembly; and a calculation processor programmed to determine, based on the phase shift between the two periodic signals, a direction of rotation of the tire and wheel assembly, and to deduce from the direction of rotation and a direction of travel of the vehicle, a right or left location of the tire and wheel assembly.

Abstract: A self-contained device intended to be carried by a wheel-tire assembly in order to locate whether the assembly is positioned on the right side or on the left side of a vehicle is described. The device includes two magnetic sensors with axes of maximum sensitivity, the sensors providing two periodic signals that are phase shifted relative to one another. Each signal is representative of variations in the magnitude of the magnetic field detected by the sensor during a revolution of the wheel-tire assembly. The device also includes a processing unit programmed to determine, from the phase shift between the two periodic signals, a direction in which the wheel-tire assembly is rotating and to deduce, from this direction of rotation and from a direction of travel of the vehicle, whether the wheel-tire assembly is located on the right side or on the left side. The two magnetic sensors are intended to be positioned on the wheel-tire assembly at distinct azimuthal locations.

Abstract: A location device is provided, in which the device is configured to be carried by a tire and wheel assembly so as to locate a right or left position of the assembly in a vehicle. The device includes two magnetic sensors with axes of maximum sensitivity; a measurement circuit for measuring a signal across terminals of each of the magnetic sensors, the measurement circuit being able to deliver two periodic signals phase-shifted with respect to one another and each periodic signal being representative of variations in values of a magnetic field detected by a corresponding magnetic sensor during a revolution of the tire and wheel assembly; and a calculation processor programmed to determine, based on the phase shift between the two periodic signals, a direction of rotation of the tire and wheel assembly, and to deduce from the direction of rotation and a direction of travel of the vehicle, a right or left location of the tire and wheel assembly.