Abstract:
The present invention relates to an electronic analysis circuit of a multicontact passive-matrix tactile sensor (1) comprising electrical supply means for powering one of the two axes of the matrix, and means for detecting the electrical characteristics along the other axis of the matrix, at the intersections between the two axes, characterized in that the supply axis and the detection axis are alternated. The invention also relates to a multicontact passive-matrix tactile sensor (1) comprising electrical supply means for powering one of the two axes of the matrix, and means for detecting electrical characteristics along the other axis of the matrix, at the intersections between the two axes, said tactile sensor (2) also comprising such an electronic circuit.
Abstract:
Method of characterizing touch on a surface of a tactile sensor comprising the following steps of: updating at least one first characteristic value of a current zone of the surface of the tactile sensor to be characterized, said first characteristic value being associated with a type of touch on the surface of the tactile sensor, and determination of a state of characterization of said current zone to be characterized, as a function of said at least one first characteristic value updated, by a set of characteristic values associated with types of touch on the surface of the tactile sensor.
Abstract:
The present invention relates to an electronic analysis circuit for a multicontact passive-matrix tactile sensor (1) comprising electrical supply means for powering one of the two axes of the matrix, and means for detecting electrical characteristics along the other axis of the matrix, at the nodes between the two axes, characterized in that at least one scanning characteristic is modulated locally or temporally. The present invention also relates to a multicontact passive-matrix tactile sensor (1) furthermore comprising such an electronic analysis circuit.
Abstract:
The present invention relates to an electronic analysis circuit for a multicontact passive-matrix tactile sensor (1) comprising electrical supply means for powering one of the two axes of the matrix, and means for detecting electrical characteristics along the other axis of the matrix, at the nodes between the two axes, characterized in that at least one scanning characteristic is modulated locally or temporally. The present invention also relates to a multicontact passive-matrix tactile sensor (1) furthermore comprising such an electronic analysis circuit.
Abstract:
The present invention relates to an electronic analysis circuit for passive-matrix multicontact tactile sensor (1) comprising electrical supply means for feeding one of the two axes of the matrix, and means for detecting electrical characteristics along the other axis of the matrix, at the intersections between the two axes, characterized in that the electrical characteristic measured is alternately the capacitance and the resistance. The present invention also relates to a multicontact passive-matrix tactile sensor (1) comprising electrical supply means for feeding one of the two axes of the matrix, and means for detecting electrical characteristics along the other axis of the matrix, at the intersections between the two axes, said tactile sensor (1) also comprising such an electronic analysis circuit.
Abstract:
The present invention relates to a multicontact tactile sensor (1) comprising a matrix formed of two transparent conducting layers, at least one exhibiting an array of fine conducting tracks, and a control circuit comprising a power supply for one of the layers and means for detecting the other layer, said sensor (1) having an operating mode of multicontact type (32) corresponding to a sweep of the supply to the lines of the corresponding layer, characterized in that it also comprises an operating mode of monocontact type (33) corresponding to a continuous and uniform supply over the whole of the sensor, each operating mode (32, 33) being activated as a function of the detection or nondetection of at least one contact.
Abstract:
The present invention relates to a multipoint touch sensor with active matrix comprising: - a matrix layer exhibiting NxM independent cells, each of the cells Px, y being linked to a row Lx and to a column Cy through a switching element, the rows Lx being common to all the cells Px, i, i lying between 1 and N, and the columns Cy being common to all the cells Pj, y, j lying between 1 and Q, Q being at most equal to M, an intermediate layer able to cause a local modification of the electrical properties of the cells situated under the tactile activation zone, said intermediate layer being placed between the active surface of the adjacent surface of the said Px, y, cells, - an upper activation layer allowing tactile interaction, - an electronic circuit sequentially controlling, for each set of cells Ca, b1-b2 with b2-b1 lying between 1 and Q, a first step of activating said cells Ca, b1-b2 followed by a second step of detecting the electrical properties of each cell Ca, b1-b2 individually so as to deliver an item of information representative of the zones activated by touch.
Abstract:
A method of acquiring data of a matrix touch sensor comprising a matrix array of cells arranged according to a set of rows and columns, comprising the following steps: activating (S54) the cells arranged according to a column (C) of at least one subset of columns of the matrix touch sensor; taking an overall measurement (S55) of an overall electrical characteristic on all the rows of at least one subset of rows of the matrix touch sensor; taking a sequential measurement of an electrical characteristic successively on each row of said at least one subset of rows, if the overall electrical characteristic has a value representative of a contact on at least one of said cells arranged according to said column; and repeating the overall measurement and sequential measurement steps after activating the cells arranged according to another column of said at least one subset of columns of the matrix touch sensor.