Abstract: A device for increasing a slew rate of a driving amplifier includes a driving amplifier, a slew rate improvement circuit, and a controller. The driving amplifier is configured to amplify an input voltage and output an output voltage. The slew rate improvement circuit is configured to provide or receive a current to increase the slew rate of the driving amplifier. The controller is configured to control an operation of the slew rate improvement circuit based on a difference between a first code corresponding to the input voltage of the driving amplifier during a current horizontal line time and a second code corresponding to the input voltage during a next horizontal line time.

Abstract: A device for increasing a slew rate of a driving amplifier includes a driving amplifier, a slew rate improvement circuit, and a controller. The driving amplifier is configured to amplify an input voltage and output an output voltage. The slew rate improvement circuit is configured to provide or receive a current to increase the slew rate of the driving amplifier. The controller is configured to control an operation of the slew rate improvement circuit based on a difference between a first code corresponding to the input voltage of the driving amplifier during a current horizontal line time and a second code corresponding to the input voltage during a next horizontal line time.

Abstract: A processor-implemented method based on an acceleration sensor and a geomagnetic sensor for determining an angular velocity of an object includes: deriving a state variable and a variance of the state variable based on an error quaternion and converting a quaternion-based rotation matrix into an error quaternion-based rotation matrix; calculating an observation matrix and an output matrix of the Kalman filter based on the error quaternion-based rotation matrix; calculating a gain of the Kalman filter based on the transferred variance of the state variable and the observation matrix of the Kalman filter after transferring the state variable and the variance of the state variable through a discretized transfer matrix; calculating a quaternion-based on a calibrated state variable and an estimated quaternion after calibrating the state variable and the variance of the state variable through the gain of the Kalman filter; and calculating angular velocity based on the quaternion.

Abstract: An electric leakage determination circuit for an electric leakage circuit breaker according to the invention comprises a zero current transformer on an alternating-current circuit to provide an electric leakage detection signal upon occurrence of electric leakage, a filter circuit unit connected to an output terminal of the zero current transformer to remove noise, and an electric leakage determination circuit unit comparing a voltage value of the electric leakage detection signal with a first reference voltage value, to be charged with electric charges when the voltage value is not smaller than the first reference voltage value and discharge electric charges when being smaller than the first reference voltage value, and comparing a charged voltage value with a second reference voltage value to determine occurrence of electric leakage when the charged voltage value is not smaller than the second reference voltage value.

Abstract: An electric leakage determination circuit for an electric leakage circuit breaker according to the invention comprises a zero current transformer on an alternating-current circuit to provide an electric leakage detection signal upon occurrence of electric leakage, a filter circuit unit connected to an output terminal of the zero current transformer to remove noise, and an electric leakage determination circuit unit comparing a voltage value of the electric leakage detection signal with a first reference voltage value, to be charged with electric charges when the voltage value is not smaller than the first reference voltage value and discharge electric charges when being smaller than the first reference voltage value, and comparing a charged voltage value with a second reference voltage value to determine occurrence of electric leakage when the charged voltage value is not smaller than the second reference voltage value.

Abstract: A data persistence control apparatus for an RFID tag is provided. The apparatus includes a capacitor to be charged, a charge circuit to charge the capacitor, a discharge circuit to discharge the capacitor, a switch switched on to electrically connect the charge circuit to the capacitor or the discharge circuit to the capacitor, and an output circuit to output a logic high signal or a logic low signal according to an input voltage determined based on a discharged degree of the capacitor.

Abstract: A demodulation apparatus comprises: an envelope detecting unit configured to receive a signal from the outside and detect an envelope signal from the received signal; a reference voltage generating unit configured to generate a reference voltage on the basis of the detected envelope signal; a comparator configured to output a pulse signal on the basis of the envelope signal detected by the envelope detecting unit and the reference voltage generated by the reference voltage generating unit; and an input signal adjusting unit connected with an envelope signal input terminal of the comparator to selectively adjust a magnitude of the envelope signal input to the comparator.

Abstract: A data persistence control apparatus for an RFID tag is provided. The apparatus includes a capacitor to be charged, a charge circuit to charge the capacitor, a discharge circuit to discharge the capacitor, a switch switched on to electrically connect the charge circuit to the capacitor or the discharge circuit to the capacitor, and an output circuit to output a logic high signal or a logic low signal according to an input voltage determined based on a discharged degree of the capacitor.