Switched-electrode capacitive-measurement device for touch-sensitive and contactless interfaces
AssigneeNanotec Solution
InventorDidier Roziere
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Abstract
The present invention relates to a capacitive-measurement device for touch-sensitive and/or contactless interfaces, including at least one capacitive-measurement electrode and electrode-switching unit capable of electrically connecting the at least one electrode, either to a capacitive-measurement unit or to a guard potential, the at least one capacitive-measurement electrode and the electrode-switching unit being provided on a single detection surface according to a technique for manufacturing planar electronic components. The invention also relates to an apparatus implementing the device.
Claims20
A capacitive measurement device for touch-sensitive and/or contactless interfaces, comprising:
- at least one capacitive measurement electrode;
- and
- at least one electrode switch configured to selectively electrically connect said at least one capacitive measurement electrode to means for measuring a capacitive coupling between the at least one capacitive measurement electrode and at least one object of interest, and to a guard potential so that said at least one capacitive measurement electrode is always connected either to said means for measuring the capacitive coupling or to said guard potential,
- wherein the at least one capacitive measurement electrode and said electrode switch are formed on a single detection surface of a planar electronic component.
Dependencies are inferred from the claim text.