Abstract: A cutting insert for groove machining is provided, which includes a front cutting edge, a chip breaker groove extending from a rear direction of the front cutting edge in a lengthwise direction of the cutting insert, land portions formed on both sides of the chip breaker groove, and inclined surfaces in continuity with the land portions and extending from the land portions to a rear direction of the cutting insert, in which a distance in a transverse direction between left and right walls of the chip breaker groove gradually increases from an entrance of the chip breaker groove toward a boundary between the land portions and the inclined surfaces, and then gradually decreases upon passing the boundary, and the cutting insert is symmetrical about a longitudinal center line thereof.

Abstract: An electronic device having an antenna element is provided. The electronic device includes a printed circuit board on which a plurality of components are mounted, at least one antenna element mounted on the printed circuit board, an insulating dam formed on the printed circuit board and configured to surround the at least one antenna element, and a dielectric part configured to fill an inside of the insulating dam and to support the at least one antenna element.

Abstract: The technical objective of the present invention is to provide a cutting insert cooling device capable of easily mounting a spraying member to a cutting tool while preventing the rotation thereof and eliminating the risk of losing a screw. To this end, the cutting insert cooling device according to the present invention, capable of spraying cooling water toward the cutting insert coupled to the cutting tool, comprises: a head part which forms the terminal end portion of the cutting tool and has a cooling water guide flow path part, and to which the cutting insert is coupled; a spraying member having a cooling water spouting flow path part to spray, toward the cutting insert, the cooling water guided through the cooling water guide flow path part; and an attaching and detaching unit that slides the spraying member to the head part so as to attach and detach the same.

Abstract: A calibration method may include: detecting, by a lane detection unit, lanes from around images acquired through cameras of a vehicle, when a behavior of the vehicle satisfies a preset behavior condition; analyzing, by a valid lane extraction unit, statistical characteristics of the positions and directions of the detected lanes, and extracting a valid lane by removing a misdetected lane; and estimating, by a parameter estimation unit, installation angles of the cameras based on the direction of the valid lane and a vanishing point decided through the valid lane.

Abstract: A multi-plate scrubber is provided, and more particularly, a multi-plate scrubber including plates having different shapes to purify polluting gas is provided. According to the multi-plate scrubber, the polluting gas is effectively purified by increasing chances of contact between the polluting gas and circulating water by using various plates having different shapes.

Abstract: A multilayer voice coil plate and a flat speaker including the same are capable of significantly reducing difficulties in designing and manufacturing a multilayer voice coil pattern. The multilayer voice coil plate may include: a first-type voice coil pattern layer formed in the shape of a track and connected from a first outer via hole outside the track to an inner via hole disposed in the track; and a second-type voice coil pattern layer formed in the shape of a track and connected from a second outer via hole outside the track to an inner via hole disposed in the track. The plurality of first-type voice coil pattern layers and the plurality of second-type voice coil pattern layers may be stacked so as to be insulated from each other, and the first outer via holes, the second outer via holes and the inner via holes may be electrically connected through interlayer conductors, respectively.

Abstract: An electronic device having an antenna element is provided. The electronic device includes a printed circuit board on which a plurality of components are mounted, at least one antenna element mounted on the printed circuit board, an insulating dam formed on the printed circuit board and configured to surround the at least one antenna element, and a dielectric part configured to fill an inside of the insulating dam and to support the at least one antenna element.

Abstract: A calibration method may include: detecting, by a lane detection unit, lanes from around images acquired through cameras of a vehicle, when a behavior of the vehicle satisfies a preset behavior condition; analyzing, by a valid lane extraction unit, statistical characteristics of the positions and directions of the detected lanes, and extracting a valid lane by removing a misdetected lane; and estimating, by a parameter estimation unit, installation angles of the cameras based on the direction of the valid lane and a vanishing point decided through the valid lane.

Abstract: A camera angle estimation method for an around view monitoring system includes uniformizing and extracting, by a control unit of the around view monitoring system, feature points from an image of each of at least three cameras, acquiring, by the control unit, corresponding points by tracking the extracted feature points, integrating, by the control unit, the corresponding points acquired from the image of each of the cameras with one another, estimating, by the control unit, vanishing points and vanishing lines by using the integrated corresponding points, and estimating an angle of each of the cameras on the basis of the estimated vanishing points and vanishing lines.

Abstract: Disclosed are a multilayer voice coil plate capable of significantly reducing difficulties in designing and manufacturing a multilayer voice coil pattern, and a flat speaker including the same. The multilayer voice coil plate may include: a first-type voice coil pattern layer formed in the shape of a track and connected from a first outer via hole outside the track to an inner via hole disposed in the track; and a second-type voice coil pattern layer formed in the shape of a track and connected from a second outer via hole outside the track to an inner via hole disposed in the track. The plurality of first-type voice coil pattern layers and the plurality of second-type voice coil pattern layers may be stacked so as to be insulated from each other, and the first outer via holes, the second outer via holes and the inner via holes may be electrically connected through interlayer conductors, respectively.

Abstract: Provided is an earphone for eliminating the influence of external noise.

Abstract: A regenerative thermal oxidizer purifies a polluted gas by oxidizing a volatile organic compound (VOC) contained in the polluted gas at a high temperature by using an amount of heat of the polluted gas.

Abstract: A fluid supplying apparatus includes an inner tube having a plurality of holes for distributing a fluid supplied from a supply unit, and an outer tube arranged coaxially or non-coaxially with the inner tube to surround the inner tube and having a plurality of slots for injecting the fluid distributed therein from the holes to the outside. The outer tube substantially has the same length as the inner tube. The fluid supplying apparatus may be used for a thin film cleaning system or method.

Abstract: The present disclosure provides an apparatus for eliminating a heterogeneous glass present in the top surface of a molten glass effectively, and a melting furnace and a glass manufacturing apparatus comprising the same. The apparatus for eliminating a heterogeneous glass according to one aspect of the present disclosure comprises a storage bath having an inlet and an outlet to receive a molten glass fed into the inlet and to discharge the received molten glass through the outlet, and an evacuating opening formed on the top of the storage bath, the evacuating opening allowing the received molten glass to overflow; a first gate being mounted close to the outlet of the storage bath to adjust an open area, thereby controlling the flow rate of the molten glass to be discharged through the outlet; and a second gate being mounted close to the inlet of the storage bath to control the height of the molten glass received in the storage bath at the section in which the evacuating opening is formed.

Abstract: The present invention relates to an insulation used in home appliances and building materials. A method of manufacturing an insulation includes fabricating an adhesive solution by inputting a binder to water contained in a water tank, inputting long glass fibers to the adhesive solution, removing moisture by supplying the long glass fibers to a mesh belt, wherein the mesh belt move left and right and front and rear so that the long glass fibers are uniformly spread, fabricating glass fiber paper by drying the long glass fibers, winding the glass fiber paper in a roll form, and preparing the glass fiber paper rolls in multiple layers, stacking two or more sheets of the glass fiber paper supplied from the rolls, and sewing the sheets of stacked glass fiber paper.

Abstract: The present invention provides an outer skin material for a vacuum heat insulator including: a lamination structure of an outermost glass textile layer, a surface protective layer, and an adhesive layer from the outside. In addition, the present invention provides a vacuum heat insulator including: a glass fiber board including 50 wt % to 90 wt % of fumed silica powder and 10 wt % to 50 wt % of glass fiber; and the outer skin material for a vacuum heat insulator, the outer skin material having the glass fiber board inserted therein. Further, the present invention provides a vacuum heat insulator including: a glass fiber board having at least one layer and including 85 wt % to 100 wt % of glass fiber; a getter agent attached to or inserted in the glass fiber board; and the outer skin material described in claim 1, the outer skin material having the glass fiber board inserted therein.