INPUT DEVICE HAVING TOUCH SCREEN OR TOUCH PAD AND INPUT PART LOCATED THEREON AND SNAP FEEL

摘要

The invention relates to an input device (1) having: a touch-sensitive input surface (8) facing a user (B); a detection apparatus (4, 6) for spatially resolved detection of an approach and touch of the touch-sensitive input surface (8), which apparatus has a sensor array (6), extending parallel to the input surface (8), for capacitive and/or inductive detection; an input part (9) which is arranged on the input surface (8) and is mounted so as to be movable from a rest position (X₀) to an activation position (X_E) in an activation direction (B₁) which is perpendicular to the input surface (8), in order to enable the undertaking of a control input by the user (B) by means of manual relocating of the input part (9) in the activation direction (B₁); a position encoder (10), which is fixed to the input part (9) and interacts with the detection apparatus (4, 6), for contactless position detection; reset means (11) in order to produce a reset force (F) having a snap feel which counteracts the manual adjustment from the rest position (X₀); wherein the detection apparatus (4, 6) is designed to detect a temporal progression of an approach to the touch-sensitive input surface (8) by means of a temporal progression of a sensor signal (Z(t)) of the detection apparatus (4, 6) and to analyze the temporal progression of the sensor signal (Z(t)) and/or an associated frequency spectrum and it is furthermore designed to assign a switching or control function only if it was found in the preceding analysis that the temporal progression of the sensor signal (Z(t)) and/or the associated frequency spectrum has a characteristic predefined by the snap feel.