Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for performing beamforming by using an antenna array in a wireless communication system are provided. The apparatus includes at least one antenna array comprising antenna elements, a control unit configured to determine a number of beams to be formed through the at least one antenna array, and a communication unit configured to adjust paths associated with the antenna elements in order to configure as many antenna subsets as the number of the beams, and to form at least one beam through at least one antenna subset configured from the at least one antenna array.

Abstract: An apparatus for controlling an LLC converter is provided. The apparatus includes a current controller that determines a first switching frequency control value of a switching element in the LLC converter to cause an output current detection value of the LLC converter to correspond to a predetermined output current command value. Additionally, a feedforward controller determines a second switching frequency control value for operating the switching element by applying a feedforward control value that corresponds to a ripple component included in an input voltage of the LLC converter to the first switching frequency control value.

Abstract: A hydraulic tube connector for a vehicle may include a connector body including a first through-hole into which a tube having a tube protrusion protruding outward is inserted and a sealing O-ring groove which is formed at one side of the first through-hole, a sealing O-ring configured to be coupled to the sealing O-ring groove, and a release sleeve coupled to the connector body to prevent the sealing O-ring from being separated from the sealing O-ring groove.

Abstract: Disclosed are a canister type thruster for implementing smooth upward/downward movement and improving productivity and an installation method thereof. The canister type thruster includes a guide module for guiding upward/downward movement of a canister. The guide module includes: a guide unit that is installed on an inner surface of a trunk so as to support a rack installed on an outer surface of the canister in parallel with a lifting direction to guide the upward/downward movement of the canister, a sliding pad that relieves an impact or a friction applied to the guide unit; and a support protrusion that is provided between the guide unit and the sliding pad to support the sliding pad.

Abstract: A circuit has a variable output that changes an output of a fixed input inversion amplification circuit, which includes a first operation amplifier with one input terminal that is applied with a fixed input value. The circuit includes an intermediate inversion amplification circuit having a second operation amplifier with an output terminal that is connected to another input terminal of the operation amplifier included in the fixed input inversion amplification circuit. One input terminal of the second operation amplifier is applied with the same input value as the fixed input value applied to the one input terminal of the first operation amplifier. Another input terminal of the second operation amplifier is applied with a variable input corresponding to an output of the first operation amplifier.

Abstract: The present invention relates to a method and an apparatus for direct current offset calibration of a direct conversion receiver, a Direct Current (DC) offset calibration apparatus of a direct conversion receiver includes a plurality of variable gain amplifiers for amplifying an input signal based on a gain control value, a DC offset monitoring unit for monitoring a DC offset for an output signal of the plurality of variable gain amplifiers, a plurality of variable Digital to Analog Converters (DACs) for controlling a current applied to each of the plurality of variable gain amplifiers according to a current control code, and a DC offset cancellation unit for determining a current control code set which minimizes the DC offset value per preset gain control value, and thus the DC offset can be precisely cancelled without being affected by external factors such as a signal modulation method and heat and performance degradation of the receiver can be prevented.

Abstract: Disclosed are an organic compound represented by any one of Chemical Formulas A to E and an organic light-emitting diode including the same. Chemical Formulas A to E are as described in the specification.

Abstract: The present invention relates to an organic light-emitting compound represented by [Chemical Formula A] and an organic light-emitting device. In Chemical Formula, A, X, Y, Z, and the substituents R1 to R8, and R11 to R20 are as defined in the specification.

Abstract: A display device includes: a display including a plurality of pixels; and a controller configured to: receive an external input image signal, adjust the external input image signal to compensate for brightness deviations of the pixels, and transmit corresponding image data signals to the pixels, wherein the controller includes: a data input section configured to receive the external input image signal and transmit a test image data signal to the pixels through a data driver, a luminance information extracting section configured to: extract brightness information for the pixels after displaying a test image in accordance with the test image data signal, and calculate first, second, and third parameters, using the brightness information, and a data compensating section configured to generate the image data signals by adjusting the external input image signal based on the first, second, and third parameters.

Abstract: A reducing agent pyrolysis system for a selective catalytic reduction apparatus includes an elbow duct that is installed on an exhaust duct at a front end of a reactor, allows exhaust gas to flow into the elbow duct, and allows the inflow exhaust gas to be discharged toward the reactor. An inner pipe unit is disposed in the elbow duct, and allows a part of the exhaust gas to flow into and be discharged from the inner pipe unit. A heating device is installed in the inner pipe unit, and heats the exhaust gas flowing into the inner pipe unit. A nozzle is installed in the inner pipe unit, is disposed at a rear end of the heating device based on a flow of the exhaust gas, and injects a reducing agent into the inner pipe unit.

Abstract: A method for controlling a power factor correction circuit includes: sensing, by a control unit, an input signal; deriving, by the control unit, a delay correction input signal using the input signal and a previous input signal that is sensed before the input signal; and controlling, by the control unit, the power factor correction circuit using the derived delay correction input signal.

Abstract: Disclosed are an organic heterocyclic compound represented by Chemical Formula A and an organic light-emitting diode comprising the same. wherein substituents R1 to R8, X1 to X4, W1, and Y1 are each as defined in the specification.

Abstract: Disclosed are a canister type thruster for implementing smooth upward/downward movement and improving productivity and an installation method thereof. The canister type thruster includes a guide module for guiding upward/downward movement of a canister. The guide module includes: a guide unit that is installed on an inner surface of a trunk so as to support a rack installed on an outer surface of the canister in parallel with a lifting direction to guide the upward/downward movement of the canister; a sliding pad that relieves an impact or a friction applied to the guide unit; and a support protrusion that is provided between the guide unit and the sliding pad to support the sliding pad.

Abstract: The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided in order to support a higher data transmission rate than a beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a signal transmission method of a radio frequency (RF) processing device, the method comprising the steps of: generating a pulse signal including a control signal and a clock signal for obtaining synchronization with another RF processing device, which is connected through an interface; and transmitting, to the another RF processing device, at least one from among the pulse signal, a RF signal for communication with a base station, and a power signal for supplying power to the another RF processing device, wherein the clock signal and the control signal are assigned to different time units, and the pulse signal, the RF signal and the power signal are signals of different frequency bands.

Abstract: The present invention provides a method for controlling the surface quality of an ultra-low carbon steel slab, the method comprising the steps of: measuring the phosphorus (P) concentration, sulfur (S) concentration and superheating degree of a molten steel which is introduced into a mould in a continuous casting process for producing the ultra-low carbon steel slab, the width of the mould, and the casting speed of the slab; and calculating the depth of a hook which is formed when the molten steel is solidified into the slab, based on the measured width of the mould, the measured phosphorus (P) concentration, sulfur (S) concentration and superheating degree of the molten steel, and the measured casting speed of the slab.

Abstract: Disclosed are a canister type thruster for implementing smooth upward/downward movement and improving productivity and an installation method thereof. The canister type thruster includes a guide module for guiding upward/downward movement of a canister. The guide module includes: a guide unit that is installed on an inner surface of a trunk so as to support a rack installed on an outer surface of the canister in parallel with a lifting direction to guide the upward/downward movement of the canister, a sliding pad that relieves an impact or a friction applied to the guide unit; and a support protrusion that is provided between the guide unit and the sliding pad to support the sliding pad.

Abstract: Provided is a thin film battery module. The thin film battery module comprises: a battery module which is configured of unit cells stacked against each other; and a shock absorbing portion which surrounds the space between the unit cells and the battery module. Also provided are a thin film battery package, a thin film battery package manufacturing device, and a thin film battery package manufacturing method.

Abstract: Disclosed are a canister type thruster for implementing smooth upward/downward movement and improving productivity and an installation method thereof. The canister type thruster includes a guide module for guiding upward/downward movement of a canister. The guide module includes: a guide unit that is installed on an inner surface of a trunk so as to support a rack installed on an outer surface of the canister in parallel with a lifting direction to guide the upward/downward movement of the canister; a sliding pad that relieves an impact or a fiction applied to the guide unit; and a support protrusion that is provided between the guide unit and the sliding pad to support the sliding pad.

Abstract: The present invention relates to a system and method for diagnosing cracking in a solidified shell in a mold, in which whether longitudinal cracking has occurred in the solidified shell can be diagnosed in real time by using a variation in temperature of the solidified shell in the mold during a continuous casting process. The system comprises: a plurality of temperature sensors arranged in a matrix form in a mold, wherein the plurality of temperature sensors are divided into a first group and a second group based on where cracking occurs; and a processor configured to: calculate a temperature difference between the temperature of the first group and the temperature of the second group from the temperatures detected by the plurality of temperature sensors; and determine, using the calculated temperature difference, whether cracking has occurred in a solidified shell discharged from the mold.

Abstract: An organic light emitting display device includes pixels positioned at crossing regions between data lines and scan lines, each of the pixels including an organic light emitting diode, a scan driver configured to supply a scan signal to scan lines, a data driver configured to drive the data lines, wherein the data driver includes, in each channel, a supply part comprising a digital-to-analog converter configured to generate data signals using second data supplied from outside in a driving period, and a deterioration part configured to measure deterioration information of the organic light emitting diode using the digital-to-analog converter in a sensing period.