Abstract: An optical phased array device may include a substrate, a light distribution unit configured to distribute input light along a plurality of paths as distributed light, a light modulator configured to modulate a phase of distributed light to establish phase-modulated light, an antenna configured to emit the phase-modulated light, a clad surrounding the light distribution unit, the light modulator, and the antenna and including a first surface facing the substrate and a second surface opposite the first surface, and a reflective layer facing the second surface of the clad. The reflective layer may be configured to reflect the phase-modulated light emitted from the antenna so that reflected light is emitted to an exterior environment that is external to the optical phased array device based on passing through the substrate.

Abstract: Provided is a grating structure including a grating layer including a first surface, a second surface opposite to the first surface, and a plurality of grating teeth between the first surface and the second surface, a slab layer on a surface of at least one of the plurality of grating teeth, and a heater on at least one of the first surface, the second surface, and the plurality of grating teeth.

Abstract: A LIDAR apparatus includes a light source module configured to generate light, an optical transmitter configured to transmit the light generated by the light source module to outside, an optical receiver configured to receive light coming from the outside, an optical detector configured to detect the light received by the optical receiver, and a processor configured to control the operation of each of the light source module and the optical transmitter, wherein the light source module includes a first tunable laser light source configured to emit light in a first wavelength band, a second tunable laser light source configured to emit light in a second wavelength band different from the first wavelength band, and a light selection element configured to select and output one of the lights emitted by the first tunable laser light source and the second tunable laser light source.

Abstract: An optical device and a light detection and ranging (LiDAR) device each including a heater combined temperature sensor are disclosed. The optical device including the heater combined temperature sensor may include a heater, an analog-to-digital converter (ADC) configured to measure a voltage of the heater, a memory storing a measurement value, and a micro-controller configured to estimate a temperature of the heater based on relationship between the measurement value and the temperature.

Abstract: Provided is a method for encryption key generation and authentication, based on a gait characteristic. In the method for encryption key generation and authentication, based on a gait characteristic, gait data for the gait of a user is received from a user terminal, a user encryption key for each user is generated with respect to each service, based on the gait data, authentication encryption key is generated based on gait data to be authenticated, the user encryption key is compared with the authentication encryption key, the user is authenticated, when the user encryption key matches the authentication encryption key.

Abstract: An object detection device may include: a converter configured to convert a transmission signal radiated towards an object into a digital transmission signal and a received signal reflected from the object into a digital received signal, according to a predetermined sampling period; and at least one processor configured to: interpolate between elements of the digital transmission signal and the digital received signal that have the predetermined sampling period, to obtain an interpolated transmission signal and an interpolated received signal; remove noise from each of the interpolated transmission signal and the interpolated received signal; generate a cross-correlation signal between the interpolated transmission signal from which the noise is removed and the interpolated received signal from which the noise is removed; and acquire a three-dimensional (3D) image of the object based on at least one peak value of the cross-correlation signal.

Abstract: A light detection and ranging (LiDAR) apparatus capable of extracting speed information and distance information of objects in front thereof is provided. The LiDAR apparatus includes: a continuous wave light source configured to generate continuous wave light; a beam steering device configured to emit the continuous wave light to an object for a first time and stop emitting the continuous wave light to the object for a second time; a receiver configured to receive the continuous wave light that is reflected from the object to form a reception signal; and a signal processor configured to obtain distance information and speed information about the object based on the reception signal.

Abstract: An optical phased array device according to at least one embodiment includes a light distribution unit configured to branch a traveling path of light, input through an input terminal, at least twice, and to direct distributed pieces of sub-light to a plurality of output terminals; at least one light modulator configured to form a plurality of channels by modulating phases of the pieces of sub-light; at least one first amplifier in an optical path between the input terminal and the at least one light modulator, the at least one first amplifier configured to amplify at least a piece of sub-light; at least one first complementary amplifier configured to replace the at least one first amplifier; and a switch configured to switch the first complementary amplifier in or out of the optical path between the input and the at least one light modulator.

Abstract: A semiconductor device has a semiconductor die, substrate, and plurality of first conductive pillars formed over the semiconductor die or substrate. Alternatively, the first conductive pillars formed over the semiconductor die and substrate. An electrical component is disposed over the semiconductor die. The electrical component can be a double-sided IPD. The semiconductor die and electrical component are disposed over the substrate. A shielding frame is disposed over the semiconductor die. A plurality of second conductive pillars is formed over a first surface of the electrical component. A plurality of third conductive pillars is formed over a second surface of the electrical component opposite the first surface of the electrical component. A bump cap can be formed over a distal end of the conductive pillars. The substrate has a cavity and the electrical component is disposed within the cavity. An underfill material is deposited between the semiconductor die and substrate.

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). Disclosed is an apparatus of a base station (BS). The BS may be configured to determine whether to use a beam of the BS and a beam of a terminal, which have been used in a downlink, in an uplink based on capability information received from the terminal and whether an antenna of the BS used for communication with the terminal is a transmission/reception common antenna and perform an uplink beam search when it is determined that the beam of the BS or the beam of the terminal is not used in the uplink.

Abstract: An electronic device includes a communication circuit, a display, and a processor. The processor transmits the media contents to the external electronic device using the communication circuit. The processor displays a plurality of visual objects in the display that respectively represents the media contents. Before transmitting the first media content to the external electronic device, the processor displays a first visual object representing the first media content within a first state in which a visual aspect is adjusted. After the first media content is transmitted to the external electronic device, the processor changes the state of the first visual object to a second state different from the first state.

Abstract: A communication method and a system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with an internet of things (IoT) technology are provided, which may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and an apparatus for transmitting a reference signal are provided. The method includes receiving, from a base station, a first parameter and a second parameter associated with a sound reference signal (SRS) by higher layer signaling, identifying a bandwidth for the SRS based on the first parameter and the second parameter, and transmitting, to the base station, the SRS based on the identified bandwidth for the SRS.

Abstract: The present invention relates to a method, a computing device, and a computer-readable medium for classifying encrypted data using a deep learning model, and more specifically, to a method, a computing device, and a computer-readable medium, in which original data is modified such that the original data is used as training data in a deep learning-based inference model, and the original data and the modified data are encrypted through an optical-based encryption method, so that the encrypted data is input into the inference model, and the encrypted data is labeled with any one classification item among classification items for classifying the encrypted data, thereby performing the labeling task with encrypted data itself without the process of decrypting the encrypted data, and performing the classification task with respect to three or more labels in addition to the binary classification task.

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). A terminal in a wireless communication system is provided. The terminal includes a transceiver, and at least one processor configured to receive, from a base station (BS), a beam failure recovery configuration comprising at least one reference signal for identifying a candidate beam for the beam failure recovery and associated random access (RA) parameters, identify the candidate beam for the beam failure recovery using the at least one reference signal, and perform a physical random access channel (PRACH) using the at least one reference signal and the associated RA parameters on the candidate beam for the beam failure recovery.

Abstract: Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to the present disclosure, a method of a terminal in a wireless communication system comprises the steps of: receiving downlink control information (DCI); confirming whether the DCI is uplink DCI for an uplink or downlink DCI for a downlink; and transmitting, through an uplink control channel or an uplink data channel, uplink control information (UCI) according to the confirmation result.

Abstract: A light detection and ranging (LiDAR) device includes a transmitter configured to transmit a continuous wave light to an object and provide a local oscillator (LO) light corresponding to the transmitted continuous wave light; a delay circuit configured to time delay the LO light; a receiver configured to receive the continuous wave light reflected from an object; and a detection circuit configured to determine a distance from the LiDAR device to the object based on the time delayed LO light and the received continuous wave light.

Abstract: A flexible advance system allows users to request and receive advances. The flexible advance system processes advances such that short-term advances are repaid through a wage deduction from the user's next regularly scheduled compensation period. The flexible advance system provides a user interface that allows users to request to receive compensation for a portion of time worked. Responsive to a request, an entry in a database associated with the user is accessed to determine a total amount of available advance compensation available for request by the user. In response to the requested amount being less than the total amount of available advance compensation, a transfer of compensation is executed to an account of the user. The flexible advance system also modifies the entry in the database by subtracting the compensated amount of time from the total amount of uncompensated time.

Abstract: An electronic device includes: at least one microphone; a main processing circuit; and an audio processing circuit, wherein the main processing circuit is configured to: obtain, via the at least one microphone, first audio data including a first number of audio channels, the first number being greater than or equal to one; receive second audio data including a second number of audio channels from an external device connected to the electronic device, the second number being greater than or equal to one; and provide the first audio data and the second audio data to the audio processing circuit, and wherein the audio processing circuit is configured to: produce a single audio stream including a third number of audio channels by using the first number of audio channels of the first audio data and the second number of audio channels of the second audio data; and provide the single audio stream to the main processing circuit.