A sensor switch with water suppression includes a sensor electrode and a photodiode connected to an evaluation circuit. The evaluation circuit generates a capacitive sensor signal indicative of an electrically-conductive object in the proximity of the sensor switch and an optical sensor signal indicative of an object at least partially opaque or impermeable to light in the proximity of the sensor switch. The capacitive sensor signal and the optical sensor signal are correlated with one another to generate an output signal.

A sense unit for inductive sensing or capacitive sensing is described. The sense unit may include a first terminal coupled to a first node, a first electrode coupled to the first node, and a second terminal. The sense unit may include a second electrode coupled to the second terminal. In a first mode, a first signal is received at the first terminal and a second signal is output on the second terminal, where the second signal may be representative of a capacitance of the sense unit. The sense unit may include an inductive coil. The sense unit may include a first capacitor. The inductive coil and the first capacitor are coupled in parallel between the first node and ground. In a second mode, a third signal is received at the first terminal and a fourth signal is output on the second terminal.

A multipoint contact detection device includes at least two capacitive or inductive sensitive structures associated with respective primary detection zones of a surface that a person is likely to contact. The sensitive structures are positioned with a separation that is small enough between them to define at least one intermediate detection zone that the person is likely to contact while exerting a capacitive or inductive disturbance on the adjacent sensitive structures. The device also includes a processing circuit configured to detect, for each sensitive structure, a disturbance induced by the person coming into proximity or into contact and locating the region or regions of the surface with which the person comes into contact relative to the primary detection zones and the one or more intermediate detection zones.

Systems and methods for determining a touch input are provided. The systems and methods generally include measuring the peak voltage at an electrode over a measurement period and determining a touch input based on the peak voltage. The systems and methods can conserve computing resources by deferring digital signal processing until after a peak electrode capacitance has been sampled. The systems and methods are suitable for capacitive sensors using self-capacitance and capacitive sensors using mutual capacitance. The systems and methods are also suitable for capacitive buttons, track pads, and touch screens, among other implementations.

An operator control device for a vehicle, and a method for operating such an operator control device is disclosed. The operator control device is for controlling safety-relevant functions. To this end, the operator control device has at least one user interface having at least one user input panel for user input and a sensor system for identifying a user input in the area of the user input panel, wherein the sensor system has at least one capacitive sensor device having a first, electrically conductive sensor structure and a second, capacitive sensor device having a second, electrically conductive sensor structure, the sensor structures being arranged beneath the user interface in the area of the user input panel. The first sensor structure and the second sensor structure are each configured in comb-like and/or meanderous fashion and arranged in intermeshing fashion at least in a subarea of the user input panel.

The present disclosure provides a touch circuit, a touch panel and a display device. The touch circuit includes: a plurality of touch signal lines electrically connected with a control circuit, a voltage signal line for providing a preset voltage, and a plurality of switching circuits in one to one correspondence with the touch signal lines, wherein each switching circuit of the plurality of the switching circuits is electrically connected with the corresponding touch signal line and the voltage signal line, the switching circuit is configured to be in an off state under a condition that a voltage value on the corresponding touch signal line is within a preset range, and is also configured to be in an on state under a condition that the voltage value on the corresponding touch signal line is not within the preset range.

A capacitive touch sensor is disclosed for use with input signal. The capacitive touch sensor includes a number n of input/output lines. Each of the number n of input/output lines is electrically disconnected from every other of the number n of input/output lines. Each of the number n of input/output lines is arranged to cross every other of the number n of input/output lines. Each of a number β of positions includes one of the number n of input/output lines crossing another of the number n of input/output lines.

A surgical device including a surgical generator configured to provide energy for an energy based surgical instrument; a functional device configured to provide a function in its activated state; a switch for activating and deactivating the surgical generator a capacitive sensor including at least one measuring electrode that is arranged at the switch, wherein the capacitive sensor is configured to measure a capacity change or a capacity at the measuring electrode and activate or deactivate the functional device as a function of a measured capacity change or capacity.

An apparatus for inductive sensing or capacitive sensing is described. The apparatus may include a signal generator to output on a first terminal a first signal in a first mode and a second signal in a second mode. The apparatus may include a charge measuring circuit to receive on a second terminal a third signal in the first mode and a fourth signal in the second mode. The third signal is representative of an inductance of a sense unit coupled between the first terminal and the second terminal. The fourth signal is representative of a capacitance of the sense unit.

The present disclosure provides a touch circuit, a touch panel and a display device. The touch circuit includes: a plurality of touch signal lines electrically connected with a control circuit, a voltage signal line for providing a preset voltage, and a plurality of switching circuits in one to one correspondence with the touch signal lines, wherein each switching circuit of the plurality of the switching circuits is electrically connected with the corresponding touch signal line and the voltage signal line, the switching circuit is configured to be in an off state under a condition that a voltage value on the corresponding touch signal line is within a preset range, and is also configured to be in an on state under a condition that the voltage value on the corresponding touch signal line is not within the preset range.