Abstract: An adhesive layer of seed crystal includes a graphitized adhesive layer, wherein the graphitized adhesive layer is prepared by heat-treating a pre-carbonized adhesive layer, and wherein the adhesive layer has Vr value of 28%/mm3 or more, and the Vr value is represented by Equation 1 below: Vr ? = { Sq ( V ? 1 - V ? 2 ) } × 1 ? 0 3 [ Equation ? ? 1 ] where Sg (%) is represented by Equation 2 below, V1 is a volume (mm3) of the pre-carbonized adhesive layer, and V2 is a volume (mm3) of the graphitized adhesive layer, Sg ? = { 1 - ( A ? 2 A ? 1 ) } × 1 ? 0 ? 0 ? % [ Equation ? ? 2 ] where A1 is an area (mm2) of the pre-carbonized adhesive layer, and A2 is an area (mm2) of the graphitized adhesive layer.

Abstract: A SiC ingot includes: a main body including a first cross-sectional plane of the main body and a second cross-sectional plane of the main body facing the first cross-sectional plane; and a protrusion disposed on the second cross-sectional plane and including a convex surface from the second cross-sectional plane of the main body, wherein a first end point disposed at one end of the second cross sectional plane, a second end point disposed at another end of the second cross sectional plane, and a peak point disposed on the convex surface are disposed on a third cross-sectional plane of the main body perpendicular to the first cross-sectional plane, and wherein a radius of curvature of an arc corresponding to a line of intersection between the third cross-sectional plane and the convex surface satisfies Equation 1 below: 3D?r?37D??[Equation 1] where r is the radius of curvature of the arc corresponding to the line of intersection between the third cross-sectional plane and the convex surface, and D is a leng

Abstract: A wireless power transmitter having a data transmission and reception capability is disclosed. The wireless power transmitter includes a main coil to transmit power, an inverter to apply an alternating current (AC) signal to the main coil, a communication module to output a transmission signal including transmission data to be wirelessly transmitted the wireless power transmitter, and/or receive a reception signal including received data wirelessly received by the wireless power transmitter, a first connecting circuitry to prevent a power signal of the main coil from being input to the communication module, and the auxiliary coil to connect to the main coil and connected to the first connecting circuitry. The main coil or the auxiliary coil may be configured to transmit the transmission data and receive the reception signal, and the auxiliary coil may be wiredly connected to the main coil or not wiredly connected to the main coil.

Abstract: There are provided an inductor and a method of manufacturing the same. The inductor includes: a body including a coil part; and cover parts disposed on upper and lower surfaces of the body. The coil part includes a plurality of through-vias penetrating through the upper and lower surfaces of the body and connection patterns disposed on the upper and lower surfaces of the body, disposed in the cover parts, and connecting the plurality of through-vias to each other.

Abstract: A method for preparing a SiC ingot includes loading a composition of a raw material comprising a carbon source and a silicon source into a reactor; placing a plurality of seed crystal on one side of the reactor spaced apart from the composition; and sublimating the composition such that the SiC ingot grows from the plurality of seed crystal. A flow factor of the composition may be 5 to 35.

Abstract: A method for producing an ingot includes loading a raw material comprising a raw material powder having a D50 of 80 ?m or more into a reactor (loading step), controlling the internal temperature of the reactor such that adjacent particles of the raw material powder are interconnected to form a necked raw material (necking step), and sublimating components of the raw material from the necked raw material to grow an ingot (ingot growth step).

Abstract: A method in which a carbonaceous protective film is formed on a rear surface of a single crystal SiC seed, the seed is placed in a reaction container without adhesion, and then single crystal SiC is grown from a SiC raw material on a front surface of the seed allows the seed to grow to a single crystal ingot having a large diameter since the absence of adhesion of the seed to a holder prevents the generation of warps or cracks attributed to a difference in thermal expansion coefficient between the seed and the holder during heating.

Abstract: Disclosed is a method and system for diffraction-aware non-line of sight (NLOS) sound source localization (SSL) that may reconstruct an indoor space, may generate acoustic rays into the indoor space based on an audio signal collected from the indoor space, and may estimate a position of an NLOS sound source based on a point at which one of the acoustic rays is diffracted.

Abstract: An apparatus for producing an ingot includes a crucible body having an opening and in which raw materials are accommodated, and a lid assembly located at the opening and having a portion fixed to the crucible body. The lid assembly includes a placement hole having open upper and lower ends, a frame member arranged along a periphery of the opening while surrounding a periphery of the placement hole, and a core member located in the placement hole and movable upward and downward with respect to the frame member.

Abstract: A memory element is provided in which a logical state can be securely stored in all conditions even when input set and reset signals are overlapping. This is achieved through provision of an array of persistence latches with an asynchronous circuit that ensures correct operation. The persistence latches provide a persistent output for each of the first and second edges of each input. The memory element is arranged to receive a plurality of inputs including a first and second input. Each first and second inputs include a digital signal that can transition between a first state via a first edge which triggers transition from the first state to the second state and a second edge which triggers transition from the second state to the first state.

Abstract: A method for preparing a seed crystal including a protective film includes preparing i) a first layer composition of a first binder resin and a first solvent and ii) a second layer composition of a second binder resin, a filler, and a second solvent, applying the first layer composition to the rear surface of a seed crystal to form a first coating layer on the rear surface of the seed crystal and drying the first coating layer to form a first layer on the rear surface of the seed crystal, and applying the second layer composition onto the first layer to form a second coating layer on the first layer, followed by heat treating to form a second layer on the first layer wherein the first layer and the second layer are sequentially disposed on the rear surface of the seed crystal, and wherein the first layer has a thickness corresponding to 30% or less of the distance from the bottom surface of the first layer to the top surface of the second layer.

Abstract: A vehicle passenger detection device, a system including the same, and a method thereof are provided. The vehicle passenger detection device includes a processor configured to determine a location of a passenger per at least one or more seats based on strength of radar signals reflected from the at least one or more seats including medium with different reflection characteristics and a storage storing information associated with strength of a radar signal for each distance and information associated with strength of a radar signal according to the reflection characteristics of the medium.

Abstract: A method for controlling a vehicle relates to a voice masking technology for allowing only a specific passenger among passengers in the vehicle to listen to a voice communication signal such as a dial tone, and the technology inhibits the remaining passengers other than the specific passenger from listening to the voice communication signal. The vehicle includes a voice signal receiver to receive a voice signal, a speaker provided in the vehicle to output the voice signal, and a controller to perform frequency conversion of the received voice signal. In particular, the controller generates a masking sound for inhibiting transmission of information contained in the voice signal on the basis of a frequency band of the converted voice signal, and generates a control signal in a manner that the generated masking sound is output to a predetermined region of an indoor space of the vehicle.

Abstract: A vehicle may include: a speaker configured to output a sound; and a controller configured to divide an internal space of the vehicle into a plurality of areas according to a predetermined reference, to determine a destination area among the plurality of areas to be used as a destination for the sound, and to generate a control signal causing the speaker to output the sound to the destination area without outputting the sound to other areas of the plurality of areas other than the destination area.

Abstract: A vehicle may include: a plurality of speakers disposed in the vehicle; a plurality of headrest speakers, each of which disposed in a headrest of a seat in the vehicle; and a controller configured to divide an internal space of the vehicle into a plurality of areas according to a predetermined reference, to determine an area of the plurality of areas to be used as a destination of sound from a speaker of the plurality of speakers, to generate a control signal by which the sound from the speaker is output to the determined area and not output to any area of the plurality of areas other than the determined area, and to control a headrest speaker of the plurality of headrest speakers disposed in a headrest of a seat in the determined area so as to output the sound.

Abstract: A circuit for driving a power switch is presented. The circuit includes a first power switch coupled to a second power switch via a switching node and a driver coupled to the first power switch, where the driver contains an energy storing element coupled to the switching node. The circuit also contains a sensor to sense an electrical parameter of the driver and a charger coupled to the sensor. The charger provides a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter. In particular, a circuit for driving a power switch based on a III/V semiconductor is presented. In addition, a method of powering a power switch driver is presented. The method includes sensing an electrical parameter of the driver and adjusting a current to charge the energy storing element based on the electrical parameter.

Abstract: A wireless power transmitter includes: a near field communications (NFC) controller configured to communicate with a wireless power receiver in an NFC method using an NFC coil; and a wireless charging controller configured to wirelessly supply power to the wireless power receiver using a power transmitting coil, and to determine whether a cross connection has occurred for the wireless power receiver by comparing first identification information transmitted to the wireless power receiver in the NFC method with second identification information received from the wireless power receiver in a communications method different from the NFC method.

Abstract: A wireless power transmitter having a data transmission and reception capability is disclosed. The wireless power transmitter includes a main coil to transmit power, an inverter to apply an alternating current (AC) signal to the main coil, a communication module to output a transmission signal including transmission data to be wirelessly transmitted the wireless power transmitter, and/or receive a reception signal including received data wirelessly received by the wireless power transmitter, a first connecting circuitry to prevent a power signal of the main coil from being input to the communication module, and the auxiliary coil to connect to the main coil and connected to the first connecting circuitry. The main coil or the auxiliary coil may be configured to transmit the transmission data and receive the reception signal, and the auxiliary coil may be wiredly connected to the main coil or not wiredly connected to the main coil.

Abstract: A memory element is provided in which a logical state can be securely stored in all conditions even when input set and reset signals are overlapping. This is achieved through provision of an array of persistence latches with an asynchronous circuit that ensures correct operation. The persistence latches provide a persistent output for each of the first and second edges of each input. The memory element is arranged to receive a plurality of inputs including a first and second input. Each first and second inputs include a digital signal that can transition between a first state via a first edge which triggers transition from the first state to the second state and a second edge which triggers transition from the second state to the first state.

Abstract: A circuit for driving a power switch is presented. The circuit includes a first power switch coupled to a second power switch via a switching node and a driver coupled to the first power switch, where the driver contains an energy storing element coupled to the switching node. The circuit also contains a sensor to sense an electrical parameter of the driver and a charger coupled to the sensor. The charger provides a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter. In particular, a circuit for driving a power switch based on a III/V semiconductor is presented. In addition, a method of powering a power switch driver is presented. The method includes sensing an electrical parameter of the driver and adjusting a current to charge the energy storing element based on the electrical parameter.