Abstract: Disclosed is an organic compound represented by Formula 1: Also disclosed is an organic light emitting device including a light emitting layer employing the organic compound as a host. The use of the organic compound enables low voltage driving of the organic light emitting device and ensures significantly long lifetime and improved luminous efficiency of the device.

Abstract: Organic compounds represented by Formulas 1 and 2 are disclosed: Also disclosed is an organic light emitting device including a light emitting layer employing the organic compounds as host materials. The use of the organic compounds enables low voltage driving of the organic light emitting device and ensures significantly long lifetime and improved luminous efficiency of the device.

Abstract: The tennis ball supply device according to an embodiment of the present invention includes a communication circuit configured to communicate with an external device; a launcher configured to launch a ball; a body unit configured to move the launcher; and a controller configured to: control the body unit to move to a first position, identify whether the body unit is disposed on the first position based on a signal received from the communication circuit, based on identifying that the body unit is disposed on the first position, control the launcher to launch the ball, control the body unit to move to a second position after the launcher has stopped launching the ball, and identify whether the body unit is disposed on the second position based on the signal received from the communication circuit.

Abstract: A memory controller controls modes for processing requests for a memory device. The modes include a normal mode for processing a memory request and a processing-in-memory (PIM) mode for processing a PIM request. The memory controller includes a bank group scheduler configured to generate a memory command corresponding to a memory request; an arbiter configured to select and output the memory command; and a PIM management circuit configured to generate a PIM command corresponding to a PIM request. The PIM management circuit controls switching between the normal mode and the PIM mode according to, among other criteria, a number of PIM commands.

Abstract: A memory controller controls modes for processing requests for a memory device. The modes include a normal mode for processing a memory request and a processing-in-memory (PIM) mode for processing a PIM request. The memory controller includes a bank group scheduler configured to generate a memory command corresponding to a memory request; an arbiter configured to select and output the memory command; and a PIM management circuit configured to generate a PIM command corresponding to a PIM request. The PIM management circuit controls switching between the normal mode and the PIM mode according to, among other criteria, a number of PIM commands.

Abstract: Provided are a method and device for providing a medical augmented reality image using artificial intelligence, and more particularly, provided are a method and device for providing a medical augmented reality image by changing a medical image of a patient captured before an operation according to posture information of the patient during the operation using an artificial intelligence model and matching the changed medical image to a body image of the patient to be output to medical staff during the operation.

Abstract: Provided is an image recognition method including the steps of: for a deep learning network that carries out object recognition on a random image, carrying out quantization corresponding to the number of a plurality of different bits to generate a plurality of quantization models respectively corresponding to the number of bits; receiving image data as an input for the deep learning network; determining the uncertainty of the input image data; selecting any one of the plurality of quantization models on the basis of the determined uncertainty; and recognizing an object from the image data by using the selected quantization model, and outputting, as the result of the object recognition, a label corresponding to the image data.

Abstract: An image recognition method includes the steps of: for a deep learning network that carries out object recognition on a random image, carrying out quantization corresponding to the number of a plurality of different bits to generate a plurality of quantization models respectively corresponding to the number of bits; receiving image data as an input for the deep learning network; determining the uncertainty of the input image data; selecting any one of the plurality of quantization models on the basis of the determined uncertainty; and recognizing an object from the image data by using the selected quantization model, and outputting, as the result of the object recognition, a label corresponding to the image data.

Abstract: The electronic apparatus includes a memory stored with a multiple light field unit (LFU) structure in which a plurality of light fields is arranged in a lattice structure, and a processor configured to, based on a view position within the lattice structure being determined, generate a 360-degree image based on the view position by using the multiple LFU structure, and the processor is configured to select an LFU to which the view position belongs from among the multiple LFU structure, allocate a rendering field-of-view (FOV) in predetermined degrees based on the view position, generate a plurality of view images based on a plurality of light fields comprising the selected LFU and the allocated FOV, and generate the 360-degree image by incorporating the generated plurality of view images.

Abstract: The tennis ball supply device according to an embodiment of the present invention includes a communication circuit configured to communicate with an external device; a launcher configured to launch a ball; a body unit configured to move the launcher; and a controller configured to: control the body unit to move to a first position, identify whether the body unit is disposed on the first position based on a signal received from the communication circuit, based on identifying that the body unit is disposed on the first position, control the launcher to launch the ball, control the body unit to move to a second position after the launcher has stopped launching the ball, and identify whether the body unit is disposed on the second position based on the signal received from the communication circuit.

Abstract: The tennis self-training system according to an embodiment of the present invention comprising a control device comprising recording unit configured to record a tennis game and a processor configured to analysis the tennis game based on a video obtained from the recording unit; and a ball machine unit configured to move and launch a ball according to the instructions of the control device; wherein the control device is configured to: determine the position of a player and the position of the ball machine unit based on the video, predict a falling position of the ball hit by the player based on the video, calculate a ball launch position and a ball arrival position of the ball machine unit based on the position of the player and the falling position of the ball, generate a control signal related to the ball launch position and the ball arrival position, transmit the control signal to the ball machine unit, wherein the ball machine unit is configured to: receive the control signal from the control device, move

Abstract: The tennis ball supply device according to an embodiment of the present invention includes a communication circuit configured to communicate with an external device; a launcher configured to launch a ball; a body unit configured to move the launcher; and a controller configured to: control the body unit to move to a first position, identify whether the body unit is disposed on the first position based on a signal received from the communication circuit, based on identifying that the body unit is disposed on the first position, control the launcher to launch the ball, control the body unit to move to a second position after the launcher has stopped launching the ball, and identify whether the body unit is disposed on the second position based on the signal received from the communication circuit.

Abstract: The tennis ball supply device according to an embodiment of the present invention includes a communication circuit configured to communicate with an external device; a launcher configured to launch a ball; a body unit configured to move the launcher; and a controller configured to: control the body unit to move to a first position, identify whether the body unit is disposed on the first position based on a signal received from the communication circuit, based on identifying that the body unit is disposed on the first position, control the launcher to launch the ball, control the body unit to move to a second position after the launcher has stopped launching the ball, and identify whether the body unit is disposed on the second position based on the signal received from the communication circuit.

Abstract: Provided is a phase-change memory (PCM) module including a PCM device including a bit line and a word line, a memory controller configured to output a command related to an operation of the PCM device, and an interference mitigation part located between the memory controller and the PCM device and configured to perform a rewrite operation on the basis of a state transition characteristic of the command output from the memory controller.

Abstract: Provided is a phase-change memory (PCM) module including a PCM device including a bit line and a word line, a memory controller configured to output a command related to an operation of the PCM device, and an interference mitigation part located between the memory controller and the PCM device and configured to perform a rewrite operation on the basis of a state transition characteristic of the command output from the memory controller.

Abstract: A semiconductor memory device includes a memory device, a Read-Modify-Write (RMW) controller configured to generate a merge command corresponding to at least one command among a read command and a write command which are externally provided, to receive a processing result of the merge command, and to generate a response for the at least one command corresponding to the merge command. The semiconductor memory device further includes a memory controller configured to control the memory device by receiving the merge command and to provide the processing result of the merge command to the RMW controller.

Abstract: The provided is a method of controlling a dynamic random-access memory (DRAM) device comprising: storing a plurality of pieces of data consisting of a plurality of bits in a memory in a transposed manner; setting at least one refresh period for each of a plurality of rows constituting the memory; and performing a refresh operation of the memory on the basis of the set refresh period.

Abstract: A semiconductor device may include a media controller configured to output a write requested address when a write request to a nonvolatile memory device is provided from a host; and a cold address manager. The cold address manager may include a stack storing meta data for the write requested address, region information storage configured to manage addresses of the nonvolatile memory device with regions such that length of a region of the regions may vary after a predetermined period, a cold address detector configured to update the stack and the region information storage after the predetermined period and to detect whether an address of the nonvolatile memory device is a cold address, the cold address having write requests performed at less than a predetermined level.

Abstract: The provided is a method of controlling a dynamic random-access memory (DRAM) device comprising: storing a plurality of pieces of data consisting of a plurality of bits in a memory in a transposed manner; setting at least one refresh period for each of a plurality of rows constituting the memory; and performing a refresh operation of the memory on the basis of the set refresh period.

Abstract: A semiconductor memory device includes a memory device, a Read-Modify-Write (RMW) controller configured to generate a merge command corresponding to at least one command among a read command and a write command which are externally provided, to receive a processing result of the merge command, and to generate a response for the at least one command corresponding to the merge command. The semiconductor memory device further includes a memory controller configured to control the memory device by receiving the merge command and to provide the processing result of the merge command to the RMW controller.