There is provided a display apparatus, which includes a display configured to display a UI including a plurality of items; a sensor configured to generate electromotive force to a closed loop which is included in the display and sense a user's touch based on a change in the electromotive force which is generated in the closed loop; and a processor configured to execute a function which corresponds to an item touched by a user from among the plurality of items based on a size of the change in the electromotive force generated in the closed loop.

A touch input sensing device configured to be added to an electronic device, the electronic device including a touch input unit, the touch input unit including a first touch member integrated with a housing. The touch input sensing device includes a resonant circuit configured to generate a resonance signal having a resonant frequency that varies based on a touch of the touch input unit, a digital frequency counter configured to count a reference frequency signal based on the resonance signal, or count the resonance signal based on the reference frequency signal, to generate a count value, and a touch detector configured to detect whether the touch of the touch input unit has occurred based on the count value generated by the digital frequency counter, and output a touch detection signal indicating whether the touch has occurred.

This application relates to devices and accessories that include or are configured to react with a mixture of electromagnets and permanent magnets. In particular the permanent magnets are configured to maintain persistent connections between components while the electromagnets are configured to pulse or activate periodically to maintain the connections or fix alignment of the various connections in certain circumstances.

A device, comprising: a pair of force sensors located for detecting a user squeeze input; and a controller operable in a squeeze detection operation to detect the user squeeze input based on a cross-correlation between respective sensor signals originating from the pair of force sensors.

A switching operation sensing apparatus includes an input operation unit, an oscillation circuit, a frequency digital converter, and a touch detection circuit. The input operation unit includes a first switching member integrally formed with a housing. The oscillation circuit is configured to generate an oscillation signal having a resonant frequency, varying based on a capacitive change or an inductive change, depending on a touch input member in contact with the first switching member during an input operation. The frequency digital converter is configured to convert the oscillation signal into a count value. The touch detection circuit is configured to detect capacitive sensing and inductive sensing based on a slope change of the count value received from the frequency digital converter, and output corresponding touch detection signals of different levels based on the detection.

The invention relates to an access system (200) for a vehicle (3), in particular for activating an electric lock (2) of the vehicle (3), comprising: at least one actuation sensor (30), by means of which a first inductance detection (110) can be performed for the detection of an activation action, at least one information sensor (35), by means of which a second inductance detection (120) can be performed, so that an additional information on the activation action can be determined, whereby the detection of the activation action can be verified.

An inductive sensor, particularly for a proximity sensor, includes a resonance circuit including a sensing coil and an amplifier comprising a first gain stage and a second gain stage each coupled via respective adjusting elements with the resonance circuit to inject energy for maintaining an oscillation of the resonance circuit. The first gain stage provides a substantially linear amplification and the second gain stage provides a comparator characteristics.

An inductive touch sensor including at least one magnetic field generating element for generating a magnetic field, at least one resonance element arranged in the magnetic field of the magnetic field generating element, a positioning element for positioning the at least one resonance element relative to the at least one magnetic field generating element, wherein the position of the resonance element relative to the at least one magnetic field generating element is adapted to be changed thereby changing the resonance generated in the resonance element by the magnetic field, an evaluation circuit for evaluating the change of the resonance of the resonance element such that thereby a detection of operation of the touch sensor is effected.

A touch sensing apparatus for dual (adjacent) touch buttons (areas) defined on a touch surface (such as a sidewall of a mobile communications device). The apparatus includes first and second touch sensor assemblies, each including a support structure, a mounting structure to mount the touch sensor assembly to the back-side of the surface, and a sense inductor coil disposed on one of the support structure and the mounting structure. The first touch sensor assembly mounted to the back-side of the surface opposite the first touch area. The second touch sensor assembly mounted to the back-side of the surface opposite the second touch area. The touch sensor assembly can be constructed with the sense inductor coil disposed on the support structure, such that deflection of the respective touch area causes the touch surface to deflect toward the sense inductor coil, or with the sense inductor coil is disposed on the mounting structure, such that deflection of the respective touch area causes the touch surface and the sense coil inductor to deflect toward the support structure.

An apparatus to secure a sensor assembly for a device touch button (such as for a mobile communications device). A touch sensor slot forms a part of the device case interior at a back-side of the touch button surface, and is configured to position the touch sensor (such as a sense coil inductor) relative to the associated touch button. A touch sensor spring clip is inserted within the touch sensor slot to flexibly urge the touch sensor toward the front-side surface of the touch sensor slot (back-side of the touch button surface). The touch sensor can include front-side spacers to maintain a sensing gap between the touch sensor and the touch button surface, and can include a sensor stiffener at the back-side surface of the touch sensor assembly, the touch sensor spring clip contacting the sensor stiffener. The touch sensor assembly can comprise a flex circuit PCB assembly.