Abstract: An image-sharing system having: an interface designed to receive an image display request containing a display address and an image; a data storage module storing static IP addresses associated with a plurality of display devices in a virtual private network; and a module for providing images, which is designed to determine that the display address corresponds to a static IP address, to transmit the image to an image storage server, to receive a reception message comprising an image storage address, and to transmit an information message containing the storage address of the image to the static IP address associated with the target display device. An image display device and to methods for sharing and displaying images is also disclosed.

Abstract: Cyclic motion of a ferromagnetic part in an environment made noisy by at least one electric source with an A.C. component is measured using at least one first magnetometer sensitive to the moving part and a sensor of an image of current in the electric source. An estimate is calculated of noise linked to the electric source on a signal measured by the first magnetometer and then subtracted from the measured signal.

Abstract: A system for measuring a variation in a distance of an axis of rotation of an object relative to a point in a plane perpendicular to this axis comprises at least two sensors for measuring a value representing an angular position of said object about said axis, at least a first of said sensors, whose position is fixed relative to said point, comprising a magnetometer suitable for measuring the magnetic field generated by said object whose magnetization varies around its circumference; and means for determining said variation of distance on the basis of a variation in an angular deviation between said sensors relative to the axis, from one revolution of said object to the next.

Abstract: A system for measuring a variation in a distance of an axis of rotation of an object relative to a point in a plane perpendicular to this axis comprises at least two sensors for measuring a value representing an angular position of said object about said axis, at least a first of said sensors, whose position is fixed relative to said point, comprising a magnetometer suitable for measuring the magnetic field generated by said object whose magnetization varies around its circumference; and means for determining said variation of distance on the basis of a variation in an angular deviation between said sensors relative to the axis, from one revolution of said object to the next.

Abstract: A system for measuring a cyclic motion of a ferromagnetic part in an environment made noisy by at least one electric source with an A.C. component, comprising: at least one first magnetometer sensitive to the moving part; a sensor of an image of the current in said electric source; means for calculating an estimate of the noise linked to the electric source on a signal measured by the first magnetometer; and means for subtracting this estimate from the measured signal.

Abstract: A method for detecting an on or off state of electrical equipment of a vehicle, wherein the amplitudes of the magnetic field measured in at least two directions are analyzed to isolate the respective contributions of the different pieces of electrical equipment and deduce their state.