Abstract: A robot vacuum cleaner that may increase cleaning efficiency around obstacles includes a main body having an intake to suck in dust and air while the main body is driven on a floor, a shutter installed in front of the intake to be able to move from the main body toward the floor, and a shutter driver configured to supply power to move the shutter.

Abstract: According to various embodiments of the disclosure, a display may include a display panel including a first region in which first group subpixels are disposed and a second region in which second group subpixels are disposed, a converter group including converters respectively connected to subpixels included in the first group subpixels and the second group subpixels to transfer image data for output of specified content to the subpixels, a first group gamma circuit selectively connected to the converters to output a first grayscale voltage whose intensity is determined based on a plurality of binary bits, a second group gamma circuit selectively connected to the subpixels to output a second grayscale voltage whose intensity is determined based on a single binary bit, and a controller that controls selective connections between the first group gamma circuit and the converters and selective connections between the second group gamma circuit and the subpixels.

Abstract: A powerless electromagnetic sensor according to an embodiment may comprise: a wireless power receiver for receiving a power signal from an external data receiver unit by using one resonance frequency selected from a plurality of resonance frequencies set therefor; a digital signal converter for converting the received power signal into a digital signal; and a processor for converting the power signal into a magnetic flux density value corresponding to the selected resonance frequency on the basis of the digital signal, and calculating the position and orientation of the electromagnetic sensor on the basis of the converted magnetic flux density value.

Abstract: The present invention relates to a complex multi-frequency ultrasonic phased array imaging device comprising: a transducer, which transmits a phased array ultrasonic signal to an object to be inspected, receives an ultrasonic signal reflected from the object to be inspected, and includes at least one first piezoelectric element having a high resonance frequency and second piezoelectric element having a resonance frequency lower than that of the first piezoelectric element; a control unit for controlling operations of the first piezoelectric element and the second piezoelectric element by applying an operation signal to the transducer; and a portable imaging unit, which calculates an operation signal applied from the control unit and an ultrasonic signal received in the transducer as a delay-sum for a phased array image, thereby outputting the same as a phased array image.

Abstract: A perpendicular bottom-free-layer STT-MRAM cell includes a bottom-free-layer magnetic tunnel junction (BMTJ). The BMTJ includes a composite metal oxide seed layer, and a free layer comprising boron (B) on the composite metal oxide seed layer. The composite metal oxide seed layer includes a first metal layer; a metal oxide layer on the first metal layer; and a second metal layer on the metal oxide layer. The second metal layer has been oxygen treated.

Abstract: According to an embodiment, a wavelength tunable laser comprising a gain region and a wavelength tunable area is disclosed. The wavelength tunable area comprises: a lower clad layer; a passive optical waveguide positioned on the lower clad layer; an upper clad layer positioned on the passive optical waveguide; a drive electrode positioned on the upper clad layer; a current blocking layer positioned on the drive electrode; a heater positioned on the current blocking layer; and a first insulating groove and a second insulating groove which are positioned so as to face each other with the passive optical waveguide therebetween.

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). The present application provides a method for establishing dual connectivity to ensure data continuity in 5G architecture. Related information of a mapping of a QoS Flow to a data radio bearer (DRB) is transmitted, by a first node, to a second node; the related information of the mapping carries indication information; response information in response to the information related to the mapping is received from the second node; and based on the response information, data is transmitted to the second node. The method of the present application may correctly configure dual connectivity resources, reduce signaling interaction, avoid configuration conflicts, optimize resource configuration, and improve the reliability of transmitting user data.

Abstract: A speed controller for a leading vehicle includes: a communication device that receives a target acceleration and a current acceleration from a following vehicle; and a controller that predicts a time when the following vehicle brakes based on the received target acceleration and the received current acceleration when the leading vehicle coasts down, and increases a speed of the leading vehicle at the predicted time.

Abstract: A communication helmet includes a helmet, a fixing belt, and a speaker module. The helmet has a head cavity for protecting a human head. Such helmet may be any known or new types of helmets for protecting soldiers, riders, policemen, working men in architecture building or in another engineering facilities, or for any other purposes and uses. The fixing belt has two belt ends connecting to two sides of the helmet. The fixing belt and the helmet together form a head container for fitting the human head.

Abstract: Provided are a wafer cleaning apparatus based on light irradiation capable of effectively cleaning residue on a wafer without damaging the wafer, and a wafer cleaning system including the cleaning apparatus. The wafer cleaning apparatus is configured to clean residue on the wafer by light irradiation and includes: a light irradiation unit configured to irradiate light onto the wafer during the light irradiation; a wafer processing unit configured accommodate the wafer and to control a position of the wafer such that the light is irradiated onto the wafer during the light irradiation; and a cooling unit configured to cool the wafer after the light irradiation has been completed. The light irradiation unit, the wafer processing unit, and the cooling unit are sequentially arranged in a vertical structure with the light irradiation unit above the wafer processing unit and the wafer processing unit above the cooling unit.

Abstract: A foldable camera stand is disclosed which includes an elongated container having a removable lid, a camera connected on a first end of the removable lid, a mounting fixture pivotally connected to a second end of the lid, the mounting fixture having a protruding member, an arm having a first end pivotally connected to the container and a second end pivotally connected to the protruding member, wherein when the removable lid covers the container, the camera and the arm are kept inside the container, and when the removable lid is lifted to an elevated position, the arm alone holds the removable lid in the elevated position without drifting.

Abstract: Freeform waveguide prism with compound surface and use with head-mounted light field display with integral imaging and relay group.

Abstract: A method for forming a material having a Perovskite single crystal structure includes alternately growing, on a substrate, each of a plurality of first layers and each of a plurality of second layers having compositions different from the plurality of first layers and forming a material having a Perovskite single crystal structure by annealing the plurality of first layers and the plurality of second layers.

Abstract: According to an aspect, a method comprises maintaining, by a cache control unit in a first packet data network, white and black lists of data servers in a second packet data network that are allowed or unable to use a cache server in the first packet data network, respectively; monitoring data traffic to and from data servers in the second packet data network over an interface between the first and second packet data network; comparing the candidate data servers to the data servers in the white and black lists; and in response to a candidate data server being in neither list, performing the following: causing sending a cache request to the candidate data server and in response to receiving an acknowledgement to the cache request within a pre-defined time, adding the candidate data server to the white list, otherwise adding the candidate data server to the black list.

Abstract: A support assembly type baffle is proposed. The baffle may include a baffle body provided in an inner space of a vehicle tank to reduce flow noise, and having a plurality of through holes spaced apart from each other and a fastening portion formed on the inner circumferential surface of the through holes, and a support having a columnar shape, being fitted into the through holes to penetrate the through holes, and having an engagement portion coupled with the fastening portion, formed on the outer circumferential surface thereof, so that the support is fastened to the baffle body in a state of penetrating the baffle body, each of both ends of the support being fixed to two opposite sides of the inner sides of the tank to maintain the shape of the inner space of the tank.

Abstract: An inkjet printing system includes an inkjet head including first to n-th nozzles disposed in a row in a first direction, where the inkjet head discharges an ink onto a pixel printing target substrate, a transfer part which transfers the pixel printing target substrate toward the inkjet head in a second direction perpendicular to the first direction, a discharge waveform signal generator which generates different discharge waveform signals based on a pixel interval in the pixel printing target substrate and a transferring speed of the pixel printing target substrate, and a discharge waveform signal selector which selects first to n-th discharge waveform signals among the plurality of different discharge waveform signals based on discharge position error data respectively corresponding to the first to n-th nozzles, such that the first to n-th discharge waveform signals are selectively provided to each of the first to n-th nozzles.

Abstract: An electronic device according to an embodiment of the present invention comprises: a housing; a display panel disposed inside the housing; a display driver circuit electrically connected to the display panel; and a processor for generating a background image output through the display panel to transmit the same to the display driver circuit.

Abstract: An image sensor includes a plurality of pixel sensing portions arranged in m columns and n rows. Each of the pixel sensing portions includes at least one thin film transistor and a photodetection diode (13) including n-type (16), intrinsic (15) and p-type (14) semiconductor layers. The p-type semiconductor layer (14) includes a multi-layered structure including lower (142) and upper (141) p-type semiconductor layered portions. The upper p-type semiconductor layered portion (141) has a band gap greater than 1.7 eV and has a p-type dopant in an amount not less than two times of that of the lower p-type semiconductor layered portion (142). An image sensing-enabled display apparatus and a method of making the image sensor are also disclosed.

Abstract: Provided are an enteric coated pharmaceutical composition and use thereof. The enteric coated pharmaceutical composition comprises chitosan citrate, a pharmaceutically acceptable carrier, and an enteric coating, wherein chitosan citrate is coated by the enteric coating and comprises a chitosan moiety of 50 to 75% deacetylation.

Abstract: A display device comprises: a base layer, islands and bridges, the islands and the bridges disposed on the base layer, the bridges connecting the islands to each other, first wirings disposed on the bridges, pixels disposed on the islands, the first wirings disposed on the bridges, pixels disposed on the islands, the first wirings being connected to the pixels; an inorganic insulating layer disposed on the base layer, the inorganic insulating layer includes an opening exposing the base layer of a bridge region having the bridges; second wirings disposed in the opening; and a first organic insulating layer disposed between the first wirings and the second wirings, where the first wirings and the second wirings are connected to each other through first contact holes formed in the first organic insulating layer.