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 rotation sensing apparatus includes a detected part, a sensor unit, and a rotation information calculation circuit. The sensor unit includes a first sensor disposed opposite to a first pattern portion, a second sensor disposed opposite to a second pattern portion, a third sensor disposed to be spaced apart from the first sensor in the rotation direction and opposite to the first pattern portion, and a fourth sensor disposed to be spaced apart from the second sensor in the rotation direction and opposite to the second pattern portion. The rotation information calculation circuit is configured to sense the rotation direction, in response to a differential signal, generated based on the first oscillation signal and the second oscillation signal, and an oscillation signal corresponding to maximum and minimum frequencies, from among the first oscillation signal, the second oscillation signal, the third oscillation signal, and the fourth oscillation signal.

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 moving object sensing control circuit includes: a control circuit configured to determine, based on a mode signal, whether to operate in a sensing mode or a power saving mode, and control, in the power saving mode, a sensing operation in a sensing stage and a standby operation in a standby stage; an LC oscillation circuit configured to generate an oscillation signal based on an impedance value corresponding to relocation of a moving object, by performing the sensing operation or the standby operation in response to control of the control circuit; and a sensing circuit configured to obtain a period count value of the sensing oscillation signal using a reference oscillation signal and a main oscillation signal, and output an output signal having movement information of the moving object based on the period count value, by performing the sensing operation in response to the control of the control circuit.

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: An apparatus for sensing rotation may include: a pattern portion connected to a rotator, and including patterns extending in a rotation direction of the rotator; a sensor group disposed opposite to the pattern portion, and configured to sense rotation of the rotator; and a rotation information calculator configured to calculate rotation information in response to a sensing signal output from the sensor group and measured by the rotation of the rotator during a single interval. The rotation information calculator may include a tilting determiner configured to compare one or more of peak values of the sensing signal with a maximum value of reference data or a minimum value of the reference data, and determine whether tilting occurs. The reference data may include unique data corresponding to a reference of an initial determination of whether tilting has occurred, and update data updated when tilting occurs.

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 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 touch operation sensing device includes a touch interaction switch integrally formed with a housing and including a conductive first touch member having a first insulated hole, and a sensing coil disposed inside the first touch member. The touch operation sensing device includes an oscillation circuit and a touch detection circuit. The oscillation circuit is configured to generate an oscillation signal having a variable resonance frequency based on a touch capacitance generated by an interaction with a touch body touching the first touch member, the first insulated hole, and the sensing coil. The touch detection circuit is configured to detect a touch interaction using the oscillation signal from the oscillation circuit.

Abstract: A moving object sensing control circuit includes: a control circuit configured to determine, based on a mode signal, whether to operate in a sensing mode or a power saving mode, and control, in the power saving mode, a sensing operation in a sensing stage and a standby operation in a standby stage; an LC oscillation circuit configured to generate an oscillation signal based on an impedance value corresponding to relocation of a moving object, by performing the sensing operation or the standby operation in response to control of the control circuit; and a sensing circuit configured to obtain a period count value of the sensing oscillation signal using a reference oscillation signal and a main oscillation signal, and output an output signal having movement information of the moving object based on the period count value, by performing the sensing operation in response to the control of the control circuit.

Abstract: An apparatus for sensing rotation may include: a pattern portion connected to a rotator, and including patterns extending in a rotation direction of the rotator; a sensor group disposed opposite to the pattern portion, and configured to sense rotation of the rotator; and a rotation information calculator configured to calculate rotation information in response to a sensing signal output from the sensor group and measured by the rotation of the rotator during a single interval. The rotation information calculator may include a tilting determiner configured to compare one or more of peak values of the sensing signal with a maximum value of reference data or a minimum value of the reference data, and determine whether tilting occurs. The reference data may include unique data corresponding to a reference of an initial determination of whether tilting has occurred, and update data updated when tilting occurs.

Abstract: A rotation sensing apparatus includes a detected part, a sensor unit, and a rotation information calculation circuit. The sensor unit includes a first sensor disposed opposite to a first pattern portion, a second sensor disposed opposite to a second pattern portion, a third sensor disposed to be spaced apart from the first sensor in the rotation direction and opposite to the first pattern portion, and a fourth sensor disposed to be spaced apart from the second sensor in the rotation direction and opposite to the second pattern portion. The rotation information calculation circuit is configured to sense the rotation direction, in response to a differential signal, generated based on the first oscillation signal and the second oscillation signal, and an oscillation signal corresponding to maximum and minimum frequencies, from among the first oscillation signal, the second oscillation signal, the third oscillation signal, and the fourth oscillation signal.

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: 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: 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 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.