An oscillating sensor device, particularly for a proximity sensor, for sensing a dynamic change of attenuation caused by a measurable physical effect includes an oscillator including a resonance circuit and an amplifier fed back to the resonance circuit and configured to maintain oscillation of the oscillator, and a control unit configured to control the open loop gain of the oscillator. The amplifier comprises a non-linear gain characteristics defining an operating point at a preset amplitude of oscillation. The control unit is configured to control the open loop gain of the oscillator so that the operating point is set to a preset amplitude of the oscillation.

To provide a connecting structure for a signal cable capable of securing a sufficient display area concerning a display in a photoelectric switch. A photoelectric switch includes a housing having a substantially rectangular parallelepiped shape. A display 5 is provided on a first surface of the housing and includes a display region. A signal cable 51 connects a control board and the display 5. The display 5 includes a connecting section 70a connected to the signal cable 51. The connecting section 70a is disposed between the display region and the signal cable in the longitudinal direction of the housing. Consequently, a connecting structure for the signal cable 5 capable of securing a sufficient display area concerning the display 5 in the photoelectric switch is provided.

To make a display in a photoelectric switch easy to see for a user. A photoelectric switch includes a housing having a substantially rectangular parallelepiped shape. A display is attached to a first surface of the outer surface of the housing. A control board is housed on the inside of the housing. A controller is mounted on the control board. The first surface includes a hole-like or cutout-like opening section for allowing a signal cable to pass from the outside to the inside of the housing. The signal cable electrically connects the control board disposed on the inside of the housing and the display disposed on the outside of the housing. A cover member includes a window section for exposing a display region of the display and covers a non-display region of the display. The cover member is provided outside the housing.

An input device includes: an inputter including a plurality of keys; a sensitivity controller that determines a sensitivity of input operation to the keys; an input detector that detects the presence or absence of input to the keys based on the input operation and the sensitivity; and an area controller that sets one or more input areas including at least one key to the inputter; wherein the sensitivity controller sets the sensitivity for each input area.

A Bluetooth headset combined with antenna and touch sensor, which integrates a sensing touch member inside a button of the Bluetooth headset with a Bluetooth antenna. The antenna element with touch function increases the density of the earphone component, in addition to the waterproof improvement, and the Bluetooth antenna is set near the external position of the Bluetooth headset, which makes the audio signal transmission effect clearer. Further, a first touch matching circuit, a second touch matching circuit and a changeover switch are electrically connected between the antenna element and the touch sensing module. When the signal of the antenna element is blocked, the changeover switch automatically switches between the first touch matching circuit and the second touch matching circuit to perform frequency adjustment and selects the better signal of the first or second touch matching circuit to do a circuit matching.

In accordance with at least one embodiment, a method for detecting a liquid level includes providing a container (402) having a cavity, and disposing a sensor (102) in the cavity of the container (402), such that a ground pattern (310) on a first surface of the sensor (102) is positioned to contact a liquid in the cavity. A first electrode (104) and a second electrode (106) are located on a second surface of the sensor (102). The sensor (102) is coupled to a sensor input and a sensor driver. A cable coupling the sensor (102) to a touch sensor (116) comprises a shield line (112, 114) that is coupled to ground.

Electrodes Ex and regions of top plate opposed to electrodes Ex constitute switches SWx that have capacitances varying when the regions of top plate are depressed from top plate toward electrodes Ex. Depression detection circuit calculates the capacitance change amounts of switches SWx indicating changes of the capacitances from a reference value. Depression detection circuit calculates the maximum value and sum of the capacitance change amounts of switches SWx. When the capacitance change amount of at least one switch SWx exceeds threshold TH_EDGE and a situation in which the ratio of the maximum value to the sum is equal to or greater than threshold COMP_LEVELx has lasted for the number of repetitions in SW_DET_COUNT, depression detection circuit determines that the switch having the maximum value of the capacitance change amount is in a depressed state.

The invention relates to a method for determining the phase difference between a first clock signal (CK1) received by a first electronic component (CE1) and a second clock signal (CK2) received by a second electronic component (CE2), comprising the steps of: S10) transmitting a first calibration signal (S12); S20) measuring a first delay (T.sub.1); S30) transmitting a second calibration signal (S21); S40) measuring a second delay (T.sub.2); S50) measuring the number (n) of clock pulses between the transmission of the first calibration signal (S12) and the active edge of the first clock signal (CK1) consecutive to the active edge of the second calibration signal (S21); S60) determining the phase difference depending on the parity of the number (n) of clock pulses.

A system includes: a power supply; an adaptively biased power event detection comparator; and an adaptive bias circuit for the adaptively biased power event detection comparator. The adaptively biased power event detection comparator is configured to compare a first input corresponding to a voltage level of the power supply with a second input corresponding to a reference voltage. The adaptive bias circuit is configured to increase a bias current for the adaptively biased power event detection comparator based on the voltage level of the power supply decreasing to be closer to the reference voltage.

An inductive sensor includes a core body, a coil wound on the core body, a cavity having a fixed volume within the core body, and an epoxy mixture filling a controlled portion of the fixed volume. The controlled portion of the fixed volume filled with the epoxy mixture controls an inductance of the sensor.