Abstract: Provided is a low-loss planar spiral coil which may include a conductive wire wound N turns, and a conductive wire corresponding to each number of turns may be formed in a way that an inner surface, close to a center of the spiral coil, and an outer surface, located on an opposite side of the inner surface, have different heights from each other based on a flat lower surface, and may be formed in way that a vertical cross-section of an upper surface connecting an uppermost end of the inner and outer surfaces has a constant height variation.

Abstract: An order execution server for stock trading includes a data collection unit configured to collect trading data on at least one item, a model generation unit configured to generate a reinforcement learning-based deep learning model including two or more actors which are neural networks that determine an action policy of a reinforcement learning agent and a critic which is a neural network that estimates an action value of the reinforcement learning agent and train the reinforcement learning-based deep learning model to derive an order execution strategy for the at least one item based on the trading data and an order execution unit configured to perform order execution for the at least one item during a current period of time by using order information including the order execution strategy.

Abstract: An order execution server for stock trading includes a data collection unit configured to collect trading data on at least one item, a subsidiary prediction value generation unit configured to generate a subsidiary prediction value by inputting the trading data into a pre-trained first deep learning model based on supervised learning, an order execution strategy deriving unit configured to derive an order execution strategy for the at least one item during a current period of time based on the trading data and the subsidiary prediction value by using a pre-trained second deep learning model based on reinforcement learning; and an order execution instruction unit configured to instruct order execution for the at least one item during the current period of time by using order information including the order execution strategy.

Abstract: An OLED panel may include a substrate including a first region and a second region disposed along a first direction. A plurality of first pixels are disposed in the first region on the substrate, the first pixels each having a first area, the first pixels each comprising a first unit pixel, a second unit pixel disposed along a second direction from the first unit pixel, and a transmission portion disposed along the first direction from the first unit pixel and the second unit pixel. A plurality of second pixels are disposed in the second region on the substrate, the second pixels each having a second area less than the first area, the second pixels each comprising a third unit pixel. The first unit pixel, the second unit pixel, and the third unit pixel may have substantially the same shape as each other.

Abstract: An image processing-based foreign substance detection method in a wireless charging system and a device performing the method are disclosed. A method for detecting a foreign substance according to an example embodiment includes an operation of acquiring an image of a charging area of a wireless charging system, an operation of detecting, based on an RGB value of a frame of the image, a foreign substance in the charging area, an operation of discriminating a type of the foreign substance, and an operation of performing power control of the wireless charging system according to the type of the foreign substance.

Abstract: An iron loss reduction control apparatus for motor permanent magnet overtemperature protection is provided. The apparatus includes: a permanent magnet temperature prediction unit configured to predict a temperature of a permanent magnet in a motor based on a driving state of the motor; a first iron loss reduction unit configured to adjust a switching frequency of a switching element in an inverter providing a driving power to the motor based on the temperature of the permanent magnet; and a second iron loss reduction unit configured to adjust a current command of the motor based on the temperature of the permanent magnet.

Abstract: The present disclosure relates to a system for controlling a motor of a vehicle for increasing control accuracy of the motor for driving the vehicle, and an object of the present disclosure is to provide a system for controlling a motor of a vehicle, which may accurately perform a motor control even when a battery voltage (i.e., motor voltage) applied to the motor upon the driving control of the motor is changed.

Abstract: A motor driving apparatus may include a first inverter circuit including a plurality of first switching devices and connected to a first end portion of each of a plurality of windings in a motor corresponding to a plurality of phases of the motor, respectively, a second inverter circuit including a plurality of second switching devices and connected to a second end portion of each of the plurality of windings, and a plurality of selection switching devices having first end portions connected to a node to which the plurality of windings and the plurality of second switching devices are connected and second end portions connected to each other.

Abstract: Provided are a wireless charging system for removing a foreign object and a foreign object removing method of the wireless charging system that may detect whether a foreign object is attached using a sensor of the wireless charging system to automatically and quickly remove the foreign object.

Abstract: A method and system for manufacturing a coil for wireless charging are disclosed herein. The method may include manufacturing a printed circuit board, generating a coil-shaped metal pattern on the printed circuit board, and generating an additional metal pattern on the top of the metal pattern using a 3D metal printer.

Abstract: An automotive motor driving apparatus includes: a first motor including a plurality of wires; and a second motor including a plurality of wires including first ends connected to each other. The motor driving apparatus includes: a first inverter connected to first ends of the wires of the motor and including a plurality of first switching devices; a second inverter connected to second ends of the wires of the first motor and including a plurality of second switching devices; a third inverter connected to second ends of the wires of the second motor; and a controller configured to drive the second motor by performing pulse width control on the third switching devices when a problem occurs in the second inverter while driving the first motor in an open end winding mode in which pulse width modulation control is performed on both of the first switching devices and the second switching devices.

Abstract: A wireless power receiving apparatus, according to an example embodiment, may include a receiving coil in which a first wire including a copper core and a second wire not including a copper core are wound around a same axis. The second wire may be located at a pitch of the first wire, and a diameter of the second wire may correspond to the pitch of the first wire.

Abstract: A wireless power transmission system and method are disclosed. The wireless power transmission system includes a plurality of wireless power transmitters configured to provide power to a plurality of wireless power receivers, and a controller configured to control the wireless power transmitters based on information of the wireless power receivers. The controller is configured to receive information of a wireless power receiver from the wireless power receiver, calculate a transmission parameter associated with a transmission efficiency of power to be provided to the wireless power receiver using the information of the wireless power receiver, and provide power to the wireless power receiver through the wireless power transmitters based on the transmission parameter.

Abstract: An antenna device for magnetic field communication may include: a first coil; a second coil; a third coil; a first capacitor connected to a 1-1 terminal of the first coil; a second capacitor connected to a 2-1 terminal of the second coil; a third capacitor connected to a 3-1 terminal of the third coil; and an input port including a first input terminal connected to a 1-2 terminal of the first coil, a 2-2 terminal of the second coil, and a 3-2 terminal of the third coil, and a second input terminal connected to the first capacitor, the second capacitor, and the third capacitor.

Abstract: An apparatus and method for wirelessly transmitting power and an apparatus and method for wirelessly receiving power are provided. A wireless power reception apparatus may include a reception circuit that is configured to wirelessly receive power having an extended frequency band and that includes a matching inductor with an adjusted inductance and a matching capacitor with an adjusted capacitance, and a processor configured to determine reception parameters related to a resonant frequency of the reception circuit based on transmission parameters and control the inductance and the capacitance based on the reception parameters, and the transmission parameters may be related to a variation in a transmission frequency at which the power is wirelessly transmitted.

Abstract: An artificial neural network apparatus and an operating method including a plurality of layer processors for performing operations on input data are disclosed. The artificial neural network apparatus may include: a flag layer processor for outputting a flag according to a comparison result between a pooling output value of a current frame and a pooling output value of a previous frame; and a controller for stopping operation of a layer processor which performs operations after the flag layer processor among the plurality of layer processors when the flag is outputted from the flag layer processor, wherein the flag layer processor is a layer processor that performs a pooling operation first among the plurality of layer processors.

Abstract: A display device includes scan lines disposed in a first direction; data lines disposed in a second direction substantially perpendicular to the first direction; and unit pixel regions adjacent to the scan lines and the data lines, each unit pixel region including sub-pixels. A portion of an opening region of at least one of the sub-pixels overlaps a unit pixel region adjacent to a unit pixel region corresponding to the at least one of the sub-pixels, and a side of the opening region of the at least one of the sub-pixels extends in a third direction inclined with respect to each of the first direction and the second direction.

Abstract: An embodiment of the present invention provides a quantization method for weights of a plurality of batch normalization layers, including: receiving a plurality of previously learned first weights of the plurality of batch normalization layers; obtaining first distribution information of the plurality of first weights; performing a first quantization on the plurality of first weights using the first distribution information to obtain a plurality of second weights; obtaining second distribution information of the plurality of second weights; and performing a second quantization on the plurality of second weights using the second distribution information to obtain a plurality of final weights, and thereby reducing an error that may occur when quantizing the weight of the batch normalization layer.

Abstract: Provided is an image recognition device. The image recognition device includes a frame data change detector that sequentially receives a plurality of frame data and detects a difference between two consecutive frame data, an ensemble section controller that sets an ensemble section in the plurality of frame data, based on the detected difference, an image recognizer that sequentially identifies classes respectively corresponding to a plurality of section frame data by applying different neural network classifiers to the plurality of section frame data in the ensemble section, and a recognition result classifier that sequentially identifies ensemble classes respectively corresponding to the plurality of section frame data by combining the classes in the ensemble section.

Abstract: Disclosed is a resonator for expanding a transfer distance. A conical resonator includes a metal layer configured to operate according to a resonant frequency, and a dielectric layer coupled to the top or bottom of the metal layer to space the metal layer apart from another metal layer without overlap, wherein the metal layer and the dielectric layer have a Swiss-roll structure, and include an input face to which power is supplied on the bottom and an open face on the top.