Abstract: A touch-sensitive interface includes a shell mounting and a touch-sensitive shell having: a main area without attachment; a peripheral area to be supported by the shell mounting; a first face touch-accessible by a user; a second face located opposite the first face, against which are arranged supporting, in the main area, several mechanical stress sensors rigidly connected to the shell mounting. Several attachment elements are arranged such that: each attachment element establishes a localized attachment of the touch-sensitive shell against the mounting thereof, at the border between the peripheral and main areas; each sensor, rigidly connected to the shell mounting at a constant non-zero distance from the associated localized attachment, is subject to minimal out of charge mechanical stress so as to create an out of charge mechanically prestressed pivot link between the touch-sensitive shell and the mounting thereof around the localized attachment.

Abstract: A system detecting actuation of a pre-determined function, the actuation executed by touch contact with a pre-determined path associated with the function on a touch-sensitive surface of an object, including: at least two separate sources for transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism storing plural reference spectral signatures associated with the pre-determined path, each of the spectral signatures associated with a localization of a touch on the pre-determined path; and a mechanism detecting actuation of the pre-determined function by comparing at least one spectral signature of the reception signal to a spectral envelope, or reference spectral envelope, of the plural reference spectral signatures associated

Abstract: A touch-sensitive interface includes a shell mounting and a touch-sensitive shell having: a main area without attachment; a peripheral area to be supported by the shell mounting; a first face touch-accessible by a user; a second face located opposite the first face, against which are arranged supporting, in the main area, several mechanical stress sensors rigidly connected to the shell mounting. Several attachment elements are arranged such that: each attachment element establishes a localized attachment of the touch-sensitive shell against the mounting thereof, at the border between the peripheral and main areas; each sensor, rigidly connected to the shell mounting at a constant non-zero distance from the associated localized attachment, is subject to minimal out of charge mechanical stress so as to create an out of charge mechanically prestressed pivot link between the touch-sensitive shell and the mounting thereof around the localized attachment.

Abstract: A method and a device for locating an interaction on a surface of large size to render it touch-sensitive are provided. The method is based on a modeling of the distributions of loads between capacitive sensors distributed over the surface and an estimation of the position closest to the interaction, by searching for a minimum cost associated with the proximity of the sensor measurements with established models.

Abstract: A device for holding a touch-sensitive surface in a frame comprises deformable means arranged between the upper rim of the frame and the upper face of the surface, and capacitive means arranged between the lower rim of the frame and the opposite face of the surface to detect a displacement of the surface. The deformable means and the capacitive means are arranged on the perimeter of the frame so as to hold the surface in the frame.

Abstract: A method and a device for locating an interaction on a surface of large size to render it touch-sensitive are provided. The method is based on a modeling of the distributions of loads between capacitive sensors distributed over the surface and an estimation of the position closest to the interaction, by searching for a minimum cost associated with the proximity of the sensor measurements with established models.

Abstract: A system for detecting and localizing at least one touch on a touch-sensitive surface of an object includes: at least two separate sources transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism localizing at least one touch on the touch-sensitive surface of the object by comparing certain spectral characteristics of the reception signal to a set of reference spectral characteristics; a mechanism measuring a temperature of the touch-sensitive surface, and a mechanism adapting the spectral characteristics of the reception signal or the reference spectral characteristics by a frequency shift of at least some of the spectral characteristics as a function of the temperature measured.

Abstract: A mechanical stress detection device includes a capacitive sensor including a first electrode including a first main face, a second electrode including a second main face arranged facing the first main face of the first electrode, an elastic dielectric medium extending between the first main face of the first electrode and the second main face of the second electrode, a mechanism measuring a capacitance at terminals of the two electrodes, and a mechanism compensating mechanical stress in which a fixed part is rigidly connected to one of the first and second electrodes and a movable part relative to the fixed part including an adjustable counterweight is rigidly connected to the other of the first and second electrodes.

Abstract: A system detecting actuation of a pre-determined function, the actuation executed by touch contact with a pre-determined path associated with the function on a touch-sensitive surface of an object, including: at least two separate sources for transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism storing plural reference spectral signatures associated with the pre-determined path, each of the spectral signatures associated with a localization of a touch on the pre-determined path; and a mechanism detecting actuation of the pre-determined function by comparing at least one spectral signature of the reception signal to a spectral envelope, or reference spectral envelope, of the plural reference spectral signatures associated

Abstract: A system for detecting and localizing at least one touch on a touch-sensitive surface of an object includes: at least two separate sources transmitting bulk acoustic waves in the touch-sensitive surface, configured to generate acoustic interference between the transmitted waves; at least one bulk acoustic wave receiver after propagation and interference thereof in the touch-sensitive surface, configured to supply a reception signal based on the acoustic waves received; a mechanism localizing at least one touch on the touch-sensitive surface of the object by comparing certain spectral characteristics of the reception signal to a set of reference spectral characteristics; a mechanism measuring a temperature of the touch-sensitive surface, and a mechanism adapting the spectral characteristics of the reception signal or the reference spectral characteristics by a frequency shift of at least some of the spectral characteristics as a function of the temperature measured.

Abstract: A system for detecting and locating a disturbance of a medium includes a medium for propagating bulk acoustic waves, a mechanism for emitting bulk acoustic waves in the medium, a mechanism for receiving the bulk acoustic waves after propagation thereof in the medium, configured to supply a reception signal from the acoustic waves received, and a mechanism for detecting and locating the disturbance in the medium from the reception signal. The medium includes a dermis layer of elastic material with a thickness locally deformable by the disturbance.