Abstract: An encryption key generating method and apparatus based on homomorphic encryption, and a ciphertext operation method and apparatus using the generated encrypt key are disclosed. The method of generating an encryption key for performing encryption based on homomorphic encryption includes receiving data, generating a first encryption key and a second encryption key used for encrypting the data based on a secret key, and transmitting the first and second encryption keys.

Abstract: Disclosed are methods and apparatuses for charging a hybrid battery pack, the method including determining, by a battery management system (BMS), a current split ratio for allocating charging current to an energy cell and a power cell in a hybrid battery pack, based on any one or any combination of a state of charge (SoC) level of the energy cell at an instance of initiation of charging, a SoC level of the power cell at the instance of the initiation of the charging, a wattage of an adapter for charging the hybrid battery pack, a capacity of the hybrid battery pack, and a charging time period, and charging, by the BMS, the hybrid battery pack by allocating the charging current to the energy cell and the power cell based on the current split ratio.

Abstract: Provided is a method of simultaneous localization and mapping (SLAM), the method including obtaining a structure of a current image frame, obtaining a structure re-identification constraint based on the structure of the current image frame, and obtaining a SLAM result based on the structure re-identification constraint. By introducing the structure re-identification constraint in a bundle adjustment process to obtain the SLAM result, error accumulation may be more easily controlled, and accuracy and robustness in obtaining the SLAM result may be improved.

Abstract: Disclosed herein is a method of fabricating hexagonal boron nitride in which hexagonal boron nitride is epitaxially grown. A method of fabricating hexagonal boron nitride includes placing a catalytic metal in a chamber, the catalytic metal having a hexagonal crystal structure and having a lattice mismatch of 15% or less with hexagonal boron nitride (h-BN) in a chamber; and growing hexagonal boron nitride on the catalytic metal at a temperature of 800° C. or lower while supplying a nitrogen source and a boron source into the chamber.

Abstract: A gate structure includes a first gate electrode including a metal, a gate barrier pattern on the first gate electrode and including a metal nitride, and a second gate electrode on the gate barrier pattern. The gate structure is buried in an upper portion of a substrate. The gate barrier pattern has a flat upper surface and an uneven lower surface.

Abstract: A method performed by an electronic device for generating a slow motion video includes obtaining plural image frames captured at a frame rate from a camera of the electronic device, detecting motion information in a first image frame from among the plural image frames, and performing an interpolation operation using one or more image frames from among the plural image frames. The one or more image frames are image frames obtained during a predetermined time after the first image frame in which the motion information is detected. A second image frame obtained before the first image frame in which the motion information is detected is discarded from the electronic device. A third image frame obtained after the predetermined time from the first image frame in which the motion information is detected is discarded from the electronic device.

Abstract: An electronic device according to an embodiment of the disclosure includes a housing that includes a first plate, a second plate facing away from the first plate, and a side member surrounding a space between the first plate and the second plate and including a first conductive region and a second conductive region electrically separated from the first conductive region, a wireless communication circuitry that is disposed within the space, transmits/receives a first signal in a first frequency band ranging from 1.4 GHz to 6 GHz by using the first conductive region, and transmits/receives a second signal in a second frequency band ranging from 0.6 GHz to 1.4 GHz by using the second conductive region, and a GNSS receiver circuitry that is disposed within the space, receives a third signal in a third frequency band ranging from 1559 MHz to 1610 MHz by using the first conductive region, and receives a fourth signal in a fourth frequency band ranging from 1164 MHz to 1189 MHz by using the second conductive region.

Abstract: An air conditioner and control method for reducing power consumption by controlling pressure or temperature of a refrigerant. The air conditioner includes a compressor compressing a refrigerant and discharging a high pressure refrigerant gas; an outdoor heat exchanger in which the high pressure refrigerant gas is changed to a refrigerant fluid; an outdoor fan to blow outdoor air to the outdoor heat exchanger; a decompressor decompressing the refrigerant fluid into a low pressure state; an indoor heat exchanger changing the decompressed low pressure refrigerant fluid to a refrigerant gas; and a controller configured to control pressure or temperature of the refrigerant based on an operation condition including at least two of a first condition determined based on an installation environment, a second condition determined based on an optimal compression ratio of the compressor, a third condition determined based on outdoor temperature, and a fourth condition set as a default value.

Abstract: A processor. In some embodiments, the processor includes: a first tile, the first tile being configured: to feed a first nibble from a third queue, through a first shuffler, to a first multiplier, and to multiply, in the first multiplier, the first nibble from the third queue by a first nibble of a third weight; to feed a second nibble from the third queue, through the first shuffler, to a second multiplier, and to multiply, in the second multiplier, the second nibble from the third queue by a second nibble of the third weight; and to feed a first nibble from a fourth queue, through the first shuffler, to a third multiplier, and to multiply, in the third multiplier, the first nibble from the fourth queue by a first nibble of a fourth weight.

Abstract: An electronic device includes a first printed circuit board; a second printed circuit board spaced apart from the first printed circuit board; a connection member electrically connecting the first printed circuit board and the second printed circuit board, the connection member including a first connection part connected to the first printed circuit board and a second connection part connected to the second printed circuit board; and a first intermediate member including: a first connector provided on a first surface of the first intermediate member facing the first printed circuit board and electrically connected to the first printed circuit board; and a second connector provided on a second surface of the first intermediate member opposite to the first surface and electrically connected to the connection member and the first connector, wherein the first connector and the second connector are separated from each other in a first direction.

Abstract: An optical proximity correction (OPC) method of effectively imitating a mask topography effect for a mask having a curvilinear pattern includes generating a library for edge filters of a near field by using an electromagnetic field simulation; generating an any-angle edge filter by using the library; for a mask having a curvilinear pattern, generating a first mask image by using thin mask approximation; determining whether the curvilinear pattern satisfies a reference; when the curvilinear pattern satisfies the reference, performing skewed Manhattanization on the curvilinear pattern and then generating a second mask image by applying the any-angle edge filter to edges of the curvilinear pattern.

Abstract: A robot includes: a sensor; a driver; a memory storing instructions; and a processor, wherein the processor is configured to execute the instructions to: acquire first scan data including location information of an object around the robot based on a sensing value acquired by the sensor at a first time point, input the first scan data to a neural network model learned to predict scan data to acquire second scan data predicted to be acquired by the robot at a second time point after the first time point, identify a possibility of collision with the object based on location information of the object included in the second scan data; acquire driving data based on the identified possibility of collision; and control the driver based on the acquired driving data.

Abstract: A method and apparatus for complementing a depth image are provided. The method includes obtaining a color image and a corresponding depth image, obtaining a first depth image based on the color image, using a first deep neural network (DNN), obtaining a second depth image based on the depth image and an intermediate feature image generated by each intermediate layer of the first DNN, using a second DNN, and obtaining a final depth image by merging the first depth image and the second depth image.

Abstract: A method of providing content in a terminal includes obtaining a first message that is input through a user interface of the terminal that is provided by a messaging application that executes a messaging service in the terminal; generating content based on the first message, and a second message stored in the terminal; and providing the generated content via the terminal.

Abstract: Provided is a semiconductor package including a first redistribution structure, a second redistribution structure on the first redistribution structure, a plurality of semiconductor chips on an upper surface of the second redistribution structure, a bridge chip on a lower surface of the second redistribution structure, and a first molding layer between the first redistribution structure and the second redistribution structure and adjacent to the bridge chip, wherein the first molding layer is between the bridge chip and the first redistribution structure.

Abstract: According to an embodiment of the present disclosure, gamma line interconnect circuit may include a resistor string including a first resistor connected between a first node and a second node and a second resistor connected between the second node and a third node, a first switch connected between a first gamma line and the first node, and configured to operate based on an interconnect signal, a second switch connected between a second gamma line and the second node, and configured to operate based on the interconnect signal, and a third switch that is connected between a third gamma line and the third node, and configured to operate based on the interconnect signal.

Abstract: Provided is a semiconductor architecture including a wafer, a semiconductor device provided on the wafer, the semiconductor device including an epitaxial layer, an epitaxial contact provided on the epitaxial layer, a first via provided on the epitaxial contact, and metal lines provided on the first via, the metal lines being configured to route signals, an oxide layer provided on a first surface of the wafer and adjacent to the semiconductor device, and a buried power rail (BPR) configured to deliver power, at least a portion of the BPR being included inside of the wafer, wherein a portion of the BPR contacts the oxide layer.

Abstract: A method of controlling an electronic apparatus for distinguishing original voice from synthetic voice in an Internet of Things (IoT) environment includes obtaining a voice of a user and environmental factors associated with a user-initiated request, extracting a plurality of features from the voice of the user and the environmental factors, obtaining a score using the plurality of features and ranking the score based on a type of the voice of the user and the environmental factors, and determining the voice of the user as the original voice or the synthetic voice by comparing the ranked score with a dynamic threshold value.