Abstract: A method using a UWB for precisely positioning in an environment without a positioning infrastructure is provided. The method, when positioning objects of swarm objects in a free space, etc., calculates an object position of each object through cooperation with objects existing surrounding. In this state, positioning is simply performed without a specific anchor by defining objects as anchors in a UWB in accordance with an embodiment. In particular, cooperative positioning is quickly performed by reducing position errors of objects in accordance with pull-push relationships based on UWB TWR. Therefore, when a specific mission is performed in an environment in which a positioning infrastructure does not exist or is lost, such as a flight space, positioning is performed in the UWB-based cooperative positioning method described above, whereby precise positioning suitable for these environments is provided.

Abstract: Disclosed is an earbud including a head housing configured for insertion into a user's auricle and having a sound emitting hole, and a stick housing extending downward from the head housing, wherein the stick housing is inclined inward.

Abstract: An automated gas supply system includes a gas cylinder transfer unit configured to transfer a cradle in which one or more gas cylinders storing a gas therein are stored; a gas cylinder inspection unit configured to check properties of the gas stored in the gas cylinder transferred from the gas cylinder transfer unit and check whether the gas leaks from the gas cylinder; a storage queue configured to receive the gas cylinder from the gas cylinder inspection unit by a mobile robot and configured to classify and store the transferred gas cylinders according to the properties of the gas stored in the gas cylinder; and a gas cabinet configured to receive the gas cylinder from the storage queue by the mobile robot and fasten a gas pipe, which is connected to a semiconductor manufacturing process line, to a gas spray nozzle, which is disposed at one side of the received gas cylinder, to supply the gas stored in the gas cylinder to the semiconductor manufacturing process line, wherein the gas cabinet includes a resid

Abstract: A semiconductor device can include a field insulating film on a substrate and a fin-type pattern of a particular material, on the substrate, having a first sidewall and an opposing second sidewall. The fin-type pattern can include a first portion of the fin-type pattern that protrudes from an upper surface of the field insulating film and a second portion of the fin-type pattern disposed on the first portion. A third portion of the fin-type pattern can be disposed on the second portion where the third portion can be capped by a top rounded surface of the fin-type pattern and the first sidewall can have an undulated profile that spans the first, second and third portions.

Abstract: The present disclosure relates to a pixel circuit and pixel driving apparatus technology. In this technology, two LEDs are arranged in parallel and selectively used in a hybrid manner in which a PWM (pulse width modulation) scheme for supplying a ramp voltage as a gate voltage for a transistor arranged within a pixel and for turning off the LEDs at the moment when the gate voltage becomes equal to a threshold voltage and a PAM (pulse amplitude modulation) scheme for determining a starting value of the ramp voltage based on a grayscale value of the pixel are combined.

Abstract: A method for clustering point cloud data includes the following steps of identifying a class of each point data of the point cloud data, the class assigned according to a semantic segmentation processing of the point cloud data, storing a plurality of point data of the point cloud data in virtual layers based on the class assigned to each point data, the virtual layers each associated with at least one class; and clustering the plurality of point data for each of the virtual layers.

Abstract: Disclosed herein is a device for fixing a platen roller for a printing apparatus. The device includes: a fixing frame installed in the housing of the printing apparatus; roller bearings respectively coupled to both ends of the platen roller in the longitudinal direction of the platen roller, and configured to allow the platen roller to be rotated; bearing holders installed on the fixing frame, and configured to provide coupling portions for the roller bearings and to allow the roller bearings to enter and exit in a horizontal direction corresponding to the longitudinal direction of the platen roller; and a locking part configured to fix the platen roller and the roller bearings to the bearing holders in the state of preventing the horizontal movement of the platen roller and the roller bearings while restraining at least one of the both ends of the platen roller to the bearing holder.

Abstract: A device for relieving dementia symptoms is disclosed. The device for relieving dementia symptoms includes a light stimulation part disposed at a location within a preset radius from an eyeball and frontal lobe of a patient and configured to relieve dementia symptoms of the patient by radiating light having a preset wavelength band to an optic nerve and frontal lobe of the patient, and a controller configured to control an operation of the light stimulation part.

Abstract: Disclosed is a printing device including a main body part including a body part configured to provide an internal space in which recording paper for printing certain information thereon is transferred and an opening or closing part configured to control opening or closing of the internal space, a printing part configured to print the certain information on the recording paper transferred in the internal space, and a recording paper separation part located on a downstream side of the printing part and configured to cut or cut off and separate recording paper on which particular information is printed by the printing part from the other recording paper. Here, the main body part includes includes a protruding part configured to prevent an adhesive attached to the surface opposite the adhesive surface from being accumulated by decreasing a contact area with the surface opposite the adhesive surface.

Abstract: Provided is a power supply apparatus for self-powered device including a power module configured to supply first driving power, a sensor module configured to be operated by the first driving power, and an energy harvesting module configured to select energy power with a higher signal intensity from among energy power from energy sources and harvest energy using the selected energy power as second driving power.

Abstract: Disclosed herein is a method of managing a printing apparatus including a thermal print head. The method of managing a printing apparatus includes: starting, by the controller of a printing apparatus, the cleaning of a thermal print head when a predetermined condition is satisfied; selecting, by the controller, a cleaning method based on at least one the satisfied condition and previously stored information; and cleaning, by the controller, the thermal print head by driving at least one of heating elements, included in a plurality of recording elements constituting the thermal print head, according to the selected cleaning method.

Abstract: Disclosed is a printing device including a main body part including a body part configured to provide an internal space in which recording paper for printing certain information thereon is transferred and an opening or closing part configured to control opening or closing of the internal space, a printing part configured to print the certain information on the recording paper transferred in the internal space, and a recording paper separation part located on a downstream side of the printing part and configured to cut or cut off and separate recording paper on which particular information is printed by the printing part from the other recording paper. Here, the main body part includes a protruding part configured to prevent an adhesive attached to the surface opposite the adhesive surface from being accumulated by decreasing a contact area with the surface opposite the adhesive surface.

Abstract: An embodiment discloses an apparatus for controlling a camera module, including a parameter generation unit configured to generate a parameter entity group, calculate a fitness value of the parameter entity group based on a step response characteristic of an output signal, and generate an offspring entity by applying weight-gain elitism to a parameter entity having the smallest fitness value among parameter entities included in the parameter entity group, and a controller configured to generate a control signal by multiplying an error signal by a parameter.

Abstract: The paper cutting device includes: a lower frame configured such that a platen roller and a thermal head are disposed on the top surface thereof and provide a paper movement path and a drive unit is contained therein; an upper frame configured to form the paper movement path in association with the lower frame, and to open the paper movement path; a fixed cutter configured to be disposed on the upper frame, and to cut the roll paper; a movable cutter configured to be disposed on the lower frame, to cut the roll paper, and to allow the roll paper to move; and a jam control unit configured to detect a jam of the roll paper, and to detect the opening of the paper movement path and lower the movable cutter.

Abstract: Disclosed is a printing device including a main body portion including a body portion configured to provide an internal space in which recording paper for printing certain information thereon is transferred and an opening or closing portion configured to control opening or closing of the internal space, a printing portion configured to print the certain information on the recording paper transferred in the internal space, and a recording paper separation portion located on a downstream side of the printing portion and configured to cut or cut off and separate recording paper on which particular information is printed by the printing portion from the other recording paper. Here, the main body portion includes a protruding portion configured to prevent an adhesive attached to the surface opposite the adhesive surface from being accumulated by decreasing a contact area with the surface opposite the adhesive surface.

Abstract: An object detection method and apparatus are disclosed. The object detection method may include acquiring identification information of an object detected from each of N (N being a preset integer of 3 or more) images continuous in order of capture from the output of a classification layer of an object detection deep learning network and correcting, based on the identification information of the object detected from each of at least two images that have been captured early in order of time, among the N images, the identification information of the object detected from an image that has been captured later in order of time than the at least two images that have been captured early in order of time, among the N images.

Abstract: An apparatus for driving a stretchable display includes a first pixel driving signal generating module to generate a first pixel driving signal including data to be displayed on a stretchable display, a first pixel driving circuit to receive the first pixel driving signal to drive a first pixel, a second pixel driving circuit to drive a second pixel, wherein the driving of the second pixel is determined depending on whether the stretchable display is stretched, and a second pixel driving signal generating module to receive the first pixel driving signal and a power signal and to generate a second pixel driving signal to be applied to the second pixel driving circuit by using one of the first pixel driving signal and the power signal, based on a stretching state signal generated depending on whether the stretchable display is stretched.

Abstract: Proposed is a method of determining a location for swarm flight using UWB, the method including: computing a reference location from GPS information in a case where the location is measured; sending out a pulling signal, preset according to a two-way ranging format, according to slave ranging scheduling corresponding to each formation, and receiving a pushing signal from a neighboring flight vehicle and performing ranging; computing a relative location in the formation on a master-slave basis from a ranged pull-push relationship using TWR time information, and computing the relative location in the formation on a slave-slave basis using a received signal strength indicator and time of arrival; generating a fingerprint map in a manner that varies with each formation, using all the computed relative locations in the formation on the master-slave basis; and computing the location of the swarm flight vehicle using the generated fingerprint map.

Abstract: This application relates to a device and a method for calculating a fault ratio. The method may include by using image frames collected from a camera of a first vehicle, generating a driving route in which the first vehicle travels, and acquiring fault information of a traffic accident involving a second vehicle, the traffic accident being related to the driving route of the first vehicle. The method may also include changing factors related to braking or steering of the first vehicle and the second vehicle, and generating multiple simulation driving scenarios by simulating the driving route on the basis of the changed factors. The method may further include computing a fault ratio of the first vehicle and the second vehicle for each of the multiple simulation driving scenarios by correcting the fault information on the basis of the factors.