Abstract: A touch sensing device configured to be installed in an electronic device, the electronic device including a side unit and a touch switch unit, the side unit including a non-conductive cover and a conductive frame coupled to the cover, the touch switch unit including a first touch member that is a portion of the cover, the touch sensing device including a first sensing electrode configured to be disposed inside the electronic device near the first touch member; a first sensing coil configured to be disposed inside the electronic device; and a first connection wire including one end connected to the first sensing electrode and another end connected to the first sensing coil, thereby electrically connecting the first sensing electrode to the first sensing coil.

Abstract: A touch sensing device includes: a first touch sensing unit including a first sensing electrode and a first sensing inductor electrically connected to each other, wherein capacitance of the first touch sensing unit varies depending on parasitic capacitance formed between the first sensing electrode and a human body according to a contact of the human body; a first force sensing unit including a first sensing coil spaced apart from an internal side surface of a frame, wherein inductance of the first force sensing unit varies depending on a change in distance between the first sensing coil and the frame according to a pressing touch; and a circuit unit configured to detect whether a touch of the human body is input, based on variations in the capacitance of the first touch sensing unit and variations in the inductance with the force sensing unit.

Abstract: A low power sensing device includes a sensor including key sensors configured to generate sensing signals, respectively, a reference sensor configured to generate a reference sensing signal, a two-state clock generator configured to generate a first clock signal and a second clock signal having clock frequencies different from each other, and a controller. The controller is configured to receive the sensing signals and the reference sensing signal, control enable operations and disable operations of the sensor and the reference sensor based on a first operation mode and a second operation mode each repeatedly performed for a predetermined time, receive the first clock signal during the first operation mode, and receive the second clock signal during the second operation mode.

Abstract: 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.

Abstract: A rotor apparatus includes: a rotor configured to rotate around a rotational axis; an angular position identification layer disposed to surround the rotational axis and configured to rotate according to rotation of the rotor, and having a width varying with angular positions of the rotor; and an angular range identification layer disposed to surround the rotational axis and configured to rotate according to the rotation of the rotor, and configured such that a plurality of portions of the angular range identification layer respectively corresponding to a plurality of different angular position ranges of the rotor have different overall widths.

Abstract: A touch sensing device includes: an oscillation circuit including a sensing inductor disposed inside a touch member, a part of a cover of an electronic device, and generating an oscillation signal according to whether a touch has occurred through the touch member; a signal processor converting the oscillation signal into a digital sensing signal; a reference signal generator updating a reference signal based on the digital sensing signal; and a signal detector outputting a detection signal by detecting whether a touch has occurred through the touch member, using the reference signal and the digital sensing signal.

Abstract: A touch operation sensing device configured to be added to an electronic device, the electronic device including a touch member disposed in a housing and having conductivity, the touch operation sensing device includes an oscillation circuit disposed on an internal side of the touch member and including an inductor element and a capacitor element to generate an oscillation signal in response to changed impedance during a touch operation through the touch member, and an insulating member disposed between a first terminal of the inductor element and the touch member, and between a second terminal of the inductor element and the touch member.

Abstract: A force sensing device includes: a substrate disposed inside a housing and spaced apart from inner side surfaces of a first force member and a second force member; a first inductor element mounted on a first surface of the substrate and spaced apart from the first force member, the first inductor element having a first inductance, variable at a time of force input pressing the first force member; a second inductor element mounted on the first surface of the substrate and spaced apart from the second force member, the second inductor element having a second inductance, variable at a time of force input; and a support member having one end contacting the first surface of the substrate between the first inductor element and the second inductor element and another end contacting an inner side surface of the housing between the first force member and the second force member.

Abstract: A rotor apparatus includes: a rotor configured to rotate around a rotational axis; an angular position identification layer disposed to surround the rotational axis and configured to rotate according to rotation of the rotor, and having a width varying with angular positions of the rotor; and an angular range identification layer disposed to surround the rotational axis and configured to rotate according to the rotation of the rotor, and configured such that a plurality of portions of the angular range identification layer respectively corresponding to a plurality of different angular position ranges of the rotor have different overall widths.

Abstract: An oscillator device includes a touchpad, and an oscillator that includes an oscillation core having a second terminal configured to output an oscillation signal generated by the oscillation core based on an input to a first terminal of the oscillation core, a first capacitor connected between the first terminal and a ground, and a second capacitor connected between the second terminal and the ground, where the first capacitor is connected to the touchpad, and where a total capacitance of the first capacitor is different from a total capacitance of the second capacitor.

Abstract: A rotation sensing apparatus includes a detected part including a first pattern portion with a plurality of first patterns and a second pattern portion with a plurality of second patterns; a first sensor disposed opposite to the first pattern portion; a second sensor disposed opposite to the second pattern portion; a third sensor disposed at an angle from the first sensor and disposed opposite to the first pattern portion; a fourth sensor disposed at an angle from the second sensor and disposed opposite to the second pattern portion; and a rotation information calculation circuit to calculate rotation information regarding rotation of a rotating body based on first, second, third, and fourth oscillation signals associated with outputs of the first, second, third, and fourth sensors and to compensate for nonlinearity of a differential signal generated based on the first, second, third, and fourth oscillation signals.

Abstract: A touch sensing device in an electronic device, the electronic device including a touch manipulation unit disposed in a housing of the electronic device, the touch manipulation unit including a first insulating member penetrating through the housing, the touch sensing device including a first sensor unit disposed on an internal surface of the first insulating member, and an oscillation circuit connected to the first sensor unit, the oscillation circuit being configured to generate a first oscillation signal having a first resonance frequency that varies in response to a touch capacitance generated in response to the first insulating member being touched, wherein the first sensor unit contacts the internal surface of the first insulating member, and does not contact the housing.

Abstract: A touch sensing device includes: a first signal conversion circuit configured to convert a first sensing signal from a first sensor unit into a first detection signal, the first detection signal being a digital signal; a signal operation circuit configured to operate the first detection signal and a high-frequency signal based on the first detection signal, to generate an operation output signal; and a touch detector configured to determine whether a touch manipulation has occurred, based on the operation output signal, to generate a touch detection signal having determination result information.

Abstract: A sensing device with a fingerprint sensor is provided. The sensing device includes a touch input pattern included in the fingerprint sensor, an oscillation circuit connected to the touch input pattern and configured to change a capacitance of the oscillation circuit when a touch occurrence is sensed by the touch input pattern and generate an oscillation signal based on the change in the capacitance, and an operation detection circuit configured to detect a touch occurrence based on a frequency included in the oscillation signal input from the oscillation circuit and generate a detection signal.

Abstract: An apparatus for sensing a rotating body includes a plurality of units to be detected provided on the rotating body; at least two sensing coils disposed to face the units to be detected; an oscillator including at least two capacitors respectively connected to the at least two sensing coils to form at least two oscillation circuits; and a rotation information calculator configured to count frequencies of at least two oscillation signals respectively output from the at least two oscillation circuits to generate a first count value and a second count value, and calculate a rotation direction of the rotating body based on a change in the first count value and a change in the second count value.

Abstract: A self-checking circuit includes: an edge detector configured to output an edge detection signal having a pulse generated during detection of an edge of a pulse signal having a pulse train; a charging and discharging circuit configured to perform a charging operation and a discharging operation based on the edge detection signal to generate a detection voltage; and a comparison circuit configured to check whether the pulse signal is normal, based on the detection voltage, to output a checking signal.

Abstract: A case for an electronic device comprising a touch member disposed at a side portion of the electronic device, and a touch sensing device disposed inside the electronic device is provided. The case includes a case body including a side portion and coupled to cover at least a part of an external surface of the electronic device; a conductor disposed in a first area of the side portion of the case body, and configured to face the touch member when the case is coupled to the electronic device, and a dielectric member disposed on one side of the conductor, where the conductor is comprised of a conductive material.

Abstract: A touch sensing device, applicable to an electric device including a touch member integrated with a housing, includes an inductor element spaced apart from an internal side surface of the touch member, a support member attached to an internal side surface of the housing or the touch member to support the inductor element disposed thereon, a substrate on which the inductor element is mounted, the substrate being disposed on the support member, and a circuit part connected to the inductor element and configured to detect a touch input and a touch-force input in response to different frequency change characteristics depending on the touch input and the touch-force input through the touch member.

Abstract: A touch sensing device includes: an oscillation circuit including a sensing inductor disposed inside a touch member, a part of a cover of an electronic device, and generating an oscillation signal according to whether a touch has occurred through the touch member; a signal processor converting the oscillation signal into a digital sensing signal; a reference signal generator updating a reference signal based on the digital sensing signal; and a signal detector outputting a detection signal by detecting whether a touch has occurred through the touch member, using the reference signal and the digital sensing signal.

Abstract: A touch sensing device includes: a first signal conversion circuit configured to convert a first sensing signal from a first sensor unit into a first detection signal, the first detection signal being a digital signal; a signal operation circuit configured to operate the first detection signal and a high-frequency signal based on the first detection signal, to generate an operation output signal; and a touch detector configured to determine whether a touch manipulation has occurred, based on the operation output signal, to generate a touch detection signal having determination result information.