Abstract: A point cloud data transmission method according to embodiments may comprise the steps of: encoding point cloud data; and transmitting a bitstream including the point cloud data. A point cloud data reception method according to embodiments may comprise the steps of: receiving a bitstream including point cloud data; and decoding the point cloud data.

Abstract: Disclosed are a point cloud data transmission method, a cloud data transmission device, a cloud data reception method, and a cloud data reception device according to embodiments. A point cloud data transmission method according to embodiments may comprise the steps of: encoding geometry data of point cloud data; encoding attribute data of the point cloud data on the basis of the geometry data; and transmitting the encoded geometry data, the encoded attribute data, and signaling data.

Abstract: Disclosed is a heterojunction semiconductor flexible substrate in which an epitaxial oxide thin film layer is hetero-bonded to a thinned silicon substrate using a metal layer, a manufacturing method thereof, and the heterojunction semiconductor flexible substrate can be applied to sensor, actuator, transducer, or micro electro mechanical systems (MEMS) device using high functionality of the epitaxial oxide thin film layer of high quality as well as an electronic and/or optical device.

Abstract: The present invention relates to a heterojunction semiconductor substrate having excellent dielectric properties, a method of manufacturing the same, and an electronic device using the same. The present invention provides a heterojunction semiconductor substrate with improved interlayer adhesion, low leakage current, and excellent dielectric properties that maintain strength in a ferroelectric fatigue experiment by interposing a metal layer and a conductive metal oxide layer on a semiconductor substrate to form an epitaxial oxide thin film layer composed of perovskite piezoelectric oxide. The heterojunction semiconductor substrate can be applied to sensors, actuators, transducers, or MEMS devices that use the high functionality of the high-quality epitaxial oxide thin film layer, including applications in electronic and optical devices.

Abstract: Disclosed is a method of manufacturing a transparent stretchable structure according to various embodiments of the present invention for achieving the above-described objects. The method includes providing a stretchable film and performing a rolling process on the stretchable film to form a transparent stretchable structure, wherein the stretchable film is provided through a thermoplastic elastomer based on physical crosslinking, and nanostructures in the transparent stretchable structure are oriented in one direction through the rolling process.

Abstract: A semiconductor device includes a substrate including first and second active regions extending in a first direction and isolated from direct contact with each other in the first direction; a device isolation layer between the first and second active regions in the substrate; and first and second gate structures extending in a second direction on the substrate while respectively intersecting end portions of the first and second active regions. The first gate structure includes a first gate electrode. The second gate structure includes a second gate electrode. The first gate structure protrudes further toward the device isolation layer, as compared to the second gate structure, in a vertical direction that is perpendicular to the first and second directions, and a lower end of the first gate electrode is located on a lower height level than a lower end of the second gate electrode.

Abstract: A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 64800 and a code rate of 7/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for quadrature phase shift keying (QPSK) modulation.

Abstract: A light emitting device includes a first electrode, a hole transport region located at (e.g., on), the first electrode, a light emitting layer located at (e.g., on), the hole transport region, an electron transport region located at (e.g., on), the light emitting layer, and a second electrode located at (e.g., on), the electron transport region. The electron transport region includes a mixed layer in which a first compound represented by Formula 1 and a second compound different from the first compound and represented by Formula 2 are mixed. The mixed layer is configured so that the light emitting efficiency and device lifespan of the light emitting device may be enhanced or improved.

Abstract: A point cloud data transmission method according to embodiments may comprise the steps of: encoding point cloud data into geometry data; encoding attribute data of the point cloud data on the basis of the geometry data; and transmitting the encoded geometry data, the encoded attribute data, and signaling information.

Abstract: The present invention relates to an intracellular delivery platform including: a first channel through which a fluid comprising cells and delivery materials flows, and a second channel and a third channel which are connected to the first channel at an angle and through which the fluid comprising cells and delivery materials flows, wherein the fluid forms at least one of a collision region and a vortex region of the fluid in at least one of the first channel, the second channel, and the third channel. According to the present invention, material can be effectively delivered into cells by forming a vortex in channels.

Abstract: A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 64800 and a code rate of 7/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM).

Abstract: A method and an apparatus for transmitting/receiving a signal by using a variable band width in a communication system are disclosed. An operating method of a terminal comprises the steps of: receiving, from a base station, first configuration information about one or more guard bands of an unlicensed band; confirming the one or more guard bands configured in the unlicensed band on the basis of the first configuration information; and confirming a plurality of RB sets configured in the unlicensed band on the basis of the one or more guard bands. Therefore, performance of the communication system can be improved.

Abstract: A low noise amplifier includes: an amplification unit including a first transistor and a second transistor connected in a cascode structure and configured to amplify a signal input to a control terminal of the first transistor; and a gain controller connected between a contact point at which the first transistor and the second transistor are connected to each other and a power source voltage, and configured to adjust a gain of the amplification unit.

Abstract: A semiconductor light emitting device includes a first electrode layer, a light emitting structure on the first electrode layer, a transparent electrode layer between the first electrode layer and the light emitting structure, an interlayer insulating layer between the transparent electrode layer and the first electrode layer, and having first and second openings, a second electrode layer between the first electrode layer and the interlayer insulating layer, and connected to the transparent electrode layer, and an electrode pad contacting the second electrode layer, each of the first openings and at least one of the second openings define one group to have at least first and second groups, the first group being closer to the electrode pad than the second group is, and a distance between the first and second openings in the first group being greater than a distance between the first and second openings in the second group.

Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a base station, a higher layer message including information indicating that first DCI including a HARQ feedback enabled/disabled indicator is configured; receiving the first DCI from the base station; receiving first downlink data from the base station based on first scheduling information included in the first DCI; and determining whether to transmit a first HARQ response for the first downlink data based on the HARQ feedback enabled/disabled indicator included in the first DCI.

Abstract: A printed circuit board assembly includes a first printed circuit board, a second printed circuit board disposed on the first printed circuit board and including an antenna pattern, a third printed circuit board disposed on the first printed circuit board, one or more first electronic components disposed between the first and the second printed circuit board and electrically connected to at least one of the first and the second printed circuit board, one or more second electronic components disposed between the first and the third printed circuit board, and electrically connected to at least one of the first and the third printed circuit board, a first interposer substrate electrically connecting the first printed circuit board and the second printed circuit board to each other, and a second interposer substrate electrically connecting the first printed circuit board and the third printed circuit board to each other.

Abstract: Disclosed are a method and an apparatus for transmitting and receiving a signal including cell information in a communication system. An operation method of a terminal comprises the steps of: receiving a first SS/PBCH block from a base station; receiving a second SS/PBCH block from the base station after receiving the first SS/PBCH block; and confirming information included in the first SS/PBCH block and the second SS/PBCH block by performing a combining operation on the first SS/PBCH block and the second SS/PBCH block when a transmission beam of the first SS/PBCH block is the same as a transmission beam of the second SS/PBCH block. Therefore, the performance of a communication system can be improved.

Abstract: The present invention relates to a massage device including a rotatable arm massage part and, more specifically, to a massage device having an arm massage part rotatably provided thereto so that various functions can be provided to a user. To this end, an aspect of the present invention includes: a body massage part including a main frame forming a skeleton of a massage device and massaging the body of a user; and arm massage parts disposed at opposite sides of the body massage part to receive both arms of the user, respectively, and massaging the arms of the user, wherein the main frame may include an arm fixing frame to which the arm massage part is connected, and the arm massage part may include an arm moving frame rotatable in at least one direction with reference to the arm fixing frame.

Abstract: A point cloud data transmission method according to embodiments may comprise the steps of: encoding geometry information including the positions of points of the point cloud data; encoding, on the basis of the geometry information, attribute information about the points of the point cloud data; and transmitting the encoded geometry information, the encoded attribute information and signaling information.

Abstract: A method of displaying 3-dimensional (3D) augmented reality includes transmitting a first image generated by photographing a target object at a first time point, and storing first view data at the first time point; receiving first relative pose data of the target object; estimating pose data of the target object, based on the first view data and the first relative pose data of the target object; generating a second image by photographing the target object at a second time point, and generating second view data at the second time point; estimating second relative pose data of the target object, based on the pose data of the target object and the second view data; rendering a 3D image of a virtual object, based on the second relative pose data of the target object; and generating an augmented image by augmenting the 3D image of the virtual object on the second image.