Abstract: A touch sensing device includes a touch switching unit including first and second touch members, an oscillator circuit generating a first oscillation signal having a variable resonant frequency based on an application of a touch to the first touch member, and generate a second oscillation signal having a variable resonant frequency based on an application of a touch to the second touch member; a detector circuit generating a first count value by converting the first oscillation signal to a first digital value, and generating a second count value by converting the second oscillation signal to a second digital value, detect an individual touch input based on the first count value and the second count value, and detect a slide touch input when a first touch input to the first touch member and a second touch input to the second touch member are detected within a predetermined slide reference time.

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 switching operation sensing device includes an input operation unit, an oscillator circuit, a frequency digital converter, and a touch-force detector circuit. The input operation unit, integrally formed with a housing, includes a first switch member and a second switch member disposed in different positions. The oscillator circuit is configured to generate a first oscillation signal based on varying capacitance when the first switch member is touched, and a second oscillation signal based on varying inductance when an input force is applied to the second switch member. The frequency digital converter is configured to convert the first oscillation signal to a first count value, and convert the second oscillation signal to a second count value.

Abstract: A touch sensing device includes a conductor disposed inside a housing and spaced apart from the housing by a predetermined first distance, a touch member integrated with the housing and including an inductor element disposed inside the housing spaced apart from the conductor by a predetermined second distance, an oscillation circuit including the inductor element, and configured to generate an oscillating signal having different frequency change characteristics for each of a touch input and a touch-force input through the touch member, and an operation detection circuit configured to detect one or more of the touch input and the touch-force input in response to the frequency change characteristics of the oscillating signal from the oscillation circuit.

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 switching operation sensing apparatus includes an input operation unit including a first detector integrally formed with a housing; a current variable oscillation circuit generating an oscillation signal having a frequency that varies based on a change in a capacitance from a human body touch on the operating unit, or a change in an inductance from a non-human body touch on the operating unit, and regulate an operating current in response to a control signal; an input operation detection circuit identifying the touch to be from the human body touch, and identifying the touch to be from the non-human body touch based on characteristics of the varied frequency, and generating detection signals having different levels based on the identification of the touch; and a control circuit that determines a sensing manner based on the detection signals and generating the control signal current based on the determined sensing manner.

Abstract: A switching operation sensing device is provided. The device includes a touch operation unit that is integrally formed with a housing and includes first and second touch members disposed in different regions; an oscillator circuit configured to generate a first oscillation signal including a variable resonant frequency when the first touch member is touched and a second oscillation signal including a variable resonant frequency when the second touch member is touched; and a touch detector circuit configured to detect whether at least one of the first and second touch members has been touched, and distinguish touch regions based on the first oscillation signal and the second oscillation signal.

Abstract: 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.

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 actuator includes a magnet, a driving coil, a driver, and a position detector. The magnet is disposed on one surface of a lens barrel. The driving coil is disposed at a proximity of the magnet. The driver is configured to apply a driving signal to the driving coil to move the lens barrel along an optical axis. The position detector is configured to generate an oscillation signal of which a frequency is changed based on movement of the magnet and configured to compare oscillation signals generated in a first position and a second position of the lens barrel to detect a present position of the lens barrel.

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: An apparatus to control a position of a camera module includes a magnetic member, a coil, a driver, a signal extractor, and a position detector. The magnetic member is disposed on a lens barrel of the camera module. The coil is disposed opposite to the magnetic member. The driver is configured to provide a position confirmation signal to the coil. The signal extractor is configured to extract a specific frequency component from a signal of the coil including the position confirmation signal and output a detection signal. The position detector is configured to provide a position signal corresponding to a position of the magnetic member based on the detection signal.

Abstract: A controller IC of a touch sensing apparatus includes an oscillation circuit including a capacitor connected to a sensing coil, a digital converter configured to count an oscillation signal output from the oscillation circuit and to output a count value, and a contact detector configured to calculate variations in the count value during delay times, and to detect a contact strength of an object according to the variations.

Abstract: 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.

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 actuator using a voice coil motor (VCM) method includes a coil configured to face a magnetic member disposed on a lateral surface of a lens carrier, and be spaced apart from the magnetic member, a driving circuit configured to supply a composite current including a driving current and a position detection current to the coil based on a composite voltage input to the driving circuit, and an impedance/digital conversion circuit configured to convert an alternating current (AC) voltage signal including a specific frequency component acquired at opposite ends of the coil via a demodulation scheme, extract a low-frequency signal having an inductance component of the coil, and detect a position signal based on the low-frequency signal.

Abstract: A camera module actuator includes, a magnet, a coil, a driver, and a position estimating processor. The coil is disposed to face the magnet. The driver is configured to move the magnet by applying a driving signal to the coil. The position estimating processor is configured to estimate a position of the magnet from an oscillating signal. A frequency of the oscillating signal varies according to a movement of the magnet.

Abstract: An apparatus for controlling a position of a voice coil motor (VCM) includes a coil disposed to face a magnetic member provided on one surface of a lens carrier; a driving circuit applying a superimposed current, including a driving current and a position detecting current, to the coil; a filter circuit extracting an alternating current (AC) voltage from a voltage across the coil; a voltage/frequency conversion circuit converting the AC voltage extracted by the filter circuit into a frequency signal; and a digital control circuit detecting positional information of the VCM based on a frequency component of the frequency signal.

Abstract: An apparatus is provided to control a position of a camera module. The apparatus includes a magnetic member disposed on a lens barrel of the camera module, a coil disposed opposite to the magnetic member, and a driver configured to generate to the coil a position confirmation signal including a specific frequency component. The apparatus also includes a signal extractor configured to extract a detected signal, including the specific frequency component, from a coil signal of the coil, and a peak detector detect a peak value of the detected signal and output a position signal corresponding to a position of the magnetic member based on the peak value.

Abstract: A digital frequency measuring apparatus includes a frequency divider dividing an input frequency signal and providing a divided frequency signal; a period counter counting clock cycles in a period of the divided frequency signal using a clock signal and providing a period count value for each period; and a digital filter amplifying the period count value using an accumulated gain, converting an amplified period count value into a frequency, and providing a first digital output value. The digital filter determines the accumulated gain using a predetermined stage number and a predetermined decimator factor.