System and method for generating a signal correlated with a manual input operation

摘要

System for generating input signals for a display (D), wherein the input signals correlate with user-performed manual input operations, comprising: - an electrode group integrated in a device component, which comprises a plurality of flatly formed and mutually adjacent electrodes, wherein the electrode group comprises a generator electrode (GEN) and position detecting electrodes (EL1, ..., EL4), - a transparent electrode (SE), wherein the generator electrode (GEN) is designed as a frame under the position detecting electrodes (EL1, ..., EL4) and the transparent electrode (SE) in a layer between the generator electrode (GEN) and the display (D), the generator electrode (GEN) being supplied with a generator signal, and the transparent electrode (SE) shielding the position detecting electrodes (EL1, ..., EL4), and one Circuit arrangement, which is coupled to the electrodes (GEN, EL1, ..., EL4) of the electrode group, - wherein the E The electrode group and the circuit arrangement form a detection circuit, which allows both a detection of a physical contacting of the device component state, as well as a position detection of the hand or a finger of a user in one of the device component spatially upstream region, wherein the circuit arrangement, the position detection by evaluating the Performs the signals of the position detection electrodes (EL1, ..., EL4) and - wherein the circuitry detects the physical contact by evaluating the capacitive coupling of the transparent electrode (SE) with the user.