Seok, KR
Bok-Yeol Seok, Yongin-Shi KR
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20090190274 | CURRENT LIMITING MODULE AND HYBRID CURRENT LIMITER USING DIFFERENT KINDS OF SUPERCONDUCTING WIRES - The present invention provides a current limiting module and a hybrid current limiter using different kinds of superconducting wires. The current limiting module includes a first superconducting wire that is wound in a predetermined direction, and a second superconducting wire that has quench characteristic different from the first superconducting wire and is wound to generate magnetic flux in a direction opposite to magnetic flux induced by the first superconducting wire. According to the present invention, inductance is generated due to unequal supply of fault current. Therefore, it is possible to prevent current from being suddenly increased, and to reduce the number of superconducting wires required to manufacture the current limiting module. Further, the hybrid current limiter does not need to include a separate coil for operating a fast switch. | 07-30-2009 |
Chan-Bok Seok, Gyeonggi-Do KR
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20080239711 | Military Lantern - Disclosed herein is a military lantern, which includes a body formed in a rectangular shape and having a power source buried therein, an electric bulb and a reflection mirror disposed at right angles to the body, a plurality of color filters used for sending a hand signal, and a color filter keeping case mounted on the front surface of the body, thereby reducing the entire size and weight in comparison with the conventional military lantern, and allowing a user to easily manipulate a hand signal. | 10-02-2008 |
Changsung Seok, Gwacheon-Si KR
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20100206041 | SCRATCH TESTING APPARATUS FOR PERFORMING SCRATCHING TEST WHILE GRADUALLY INCREASING OR DECREASING LOAD - A scratch testing apparatus for performing a scratching test while gradually increasing or decreasing a load, in which a pressure applied to the surface of a test specimen gradually increases or decreases as a head unit, to which a tip is attached, moves horizontally. The scratching testing apparatus includes a head unit having a bottom to which a tip attached; a guiding unit for guiding the head unit to move horizontally; and a pressure changing unit for changing pressure applied to the tip while the head unit is moving along the guiding unit. Therefore, the scratch testing apparatus may perform a scratching test as gradually increasing or gradually decreasing a load applied to the test specimen by the tip by moving the head unit, to which the tip is attached, horizontally. | 08-19-2010 |
20130193745 | ACTIVE SPEED RESTRICTING WHEEL ASSEMBLY - A speed restricting wheel assembly is provided. The speed restricting wheel assembly includes: a casing of which one side is partially open and forms a circular accommodating hole eccentric from a center; a rotation rotor which is inserted inside the accommodating hole and rotates in an interlocked manner with the casing in a state where it is eccentric from a rotation center of the casing, but which also forms a rotation space inside and a plurality of internal gear teeth dented radially from the rotation space; a sun gear accommodated inside the rotation space, and has a plurality of protruding external gear teeth in contact with the internal gear teeth and an axis member mounted onto a rotation center accommodated inside the rotation hole; and a resistance fluid which is accommodated in a space between the external gear teeth and internal gear teeth. | 08-01-2013 |
20130298692 | METHOD FOR MAKING TEST SPECIMEN AND TEST EQUIPMENT TO EVALUATE THE SAFETY OF PIPING - Provided herein is a test equipment for evaluating safety of a piping for use in nuclear power plants, the test equipment having a test specimen made of a same material as the piping, and having a notch cut from a first surface which is an end portion of the test specimen, with a crack formed at an end portion of the notch; and a load applier connected to the test specimen to apply a load in a direction perpendicular to a direction in which the notch is cut, wherein a pair of pin holes are connected to the load applier such that they are arranged to be distanced from each other along the direction of the load applied to the test specimen, and a central point is provided in a space between a second surface opposing the first surface and an end portion of the crack. | 11-14-2013 |
20140369378 | METHOD AND APPARATUS FOR TESTING PERFORMANCE OF THERMAL BARRIER COATING LAYER - A method and an apparatus for testing thermal performance of a coating layer are provided. The method for testing thermal performance of a coating layer involves obtaining a first thermal gradient by exposing one side of a metal base test piece to heat and exposing another side of the metal base test piece to a cooling air; obtaining a second thermal gradient by exposing a coating layer side of a coating layer test piece to heat and exposing an opposite side to a cooling air; calculating an exterior temperature T | 12-18-2014 |
Chang Sung Seok, Gwacheon-Si KR
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20110094307 | COMPACT PIPE SPECIMEN - A compact pipe specimen applicable to a fracture toughness test used to evaluate physical properties of a pipe material is provided. The compact pipe specimen includes: a pipe having a notch portion formed in a circumferential direction and a crack portion formed at the edge of the notch portion; and first and second jigs having openings to which a pressurizing unit is coupled so as to cause a bending load on the pipe, having the notch portion therebetween, and attached to the exterior surface of the pipe, respectively. It is unnecessary to correct the influence of a constraint effect due to varying sizes and shapes of the specimen. There is no restriction to the curvature and thickness of a pipe. A fracture behavior of a pipe crack portion can be precisely simulated. | 04-28-2011 |
Dae Ii Seok, Suwon-Si KR
Dae Young Seok, Buk-Gu KR
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20110037934 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING AND REPAIRING METHODS THEREOF - An LCD device is disclosed. The LCD device includes: a gate line and a gate electrode formed on a substrate; a common line formed in the same layer as the gate line; a gate insulation film entirely formed on the substrate with the gate line; a data line formed on the gate insulation film opposite to the common line and configured to cross with the gate line and to define a pixel region; a source electrode formed to protrude from the data line; a drain electrode separated by a first distance from the source electrode; a passivation film entirely formed on the substrate with the data line; and a pixel electrode formed on the passivation film and connected to the drain electrode. The common line includes first and second common lines separated by a second distance from each other, and a third common line formed within the second distance between the first and second common lines and used as a repair pattern during a repairing process. | 02-17-2011 |
Dae Young Seok, Daegu KR
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20090091672 | Liquid crystal display device - Provided is a liquid crystal display device. The liquid crystal display device includes a pixel including at least two domains generating electric fields of different directions. A contact part disposed in the boundary between the domains electrically connects a common line with a common electrode. The common line is disposed in a pixel adjacent to the pixel, so that both a viewing angle and an aperture ratio can be improved. | 04-09-2009 |
20100066968 | LIQUID CRYSTAL DISPLAY PANEL AND METHOD FOR TESTING THE SAME - The present invention relates to a liquid crystal display panel and a method for testing the same. The liquid crystal display panel includes at least one testing signal supply line having first and second horizontal portions spaced from each other for applying a testing signal to the liquid crystal display panel, first and second electrolytic corrosion blocking patterns connected to ends of the first and second horizontal lines respectively on a substrate and isolated from each other for prevention of transmission of the electrolytic corrosion from the first horizontal portion to the second horizontal portion, and a connection pattern formed of a material resistant to the electrolytic corrosion for connecting the first horizontal portion to the second horizontal portion, electrically. | 03-18-2010 |
20110096258 | ARRAY SUBSTRATE FOR LIQUID CRYSTAL DISPLAY DEVICE, LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - An array substrate for a liquid crystal display device includes a gate line on a substrate including a display region and a non-display region at a periphery of the display region; a common line on the substrate; a data drive integrated circuit in the non-display region; first and second data lines crossing the gate line to define a pixel region in the display region, the first and second data lines having a difference in a distance from the data drive integrated circuit; first and second data link lines connected to the data drive integrated circuit, the first and second data link lines respectively connected to the first and second data lines; a thin film transistor in the pixel region connected to the gate line and one of the first and second data lines; a pixel electrode in the pixel region and connected to the thin film transistor; and a first conductive pattern in the non-display region and connected to the common line such that a common voltage is applied to the first conductive pattern, the first conductive pattern overlapping the first and second data link lines to form first and second capacitors, respectively. | 04-28-2011 |
20110134104 | LIQUID CRYSTAL DISPLAY DEVICE WITH GATE-IN-PANEL STRUCTURE - An LCD device with a GIP structure is disclosed. The LCD device includes: a liquid crystal display panel with an active area used to display images; a gate driving circuit formed on a side edge of the liquid crystal display panel and configured to apply scan signals to the active area; a start pulse line configured to transfer a start pulse to the gate driving circuit; and a static electricity preventer disposed on the start pulse line adjacent to the gate driving circuit and configured to prevent static electricity from being induced in the start pulse line. | 06-09-2011 |
Dong Chan Seok, Daejeon KR
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20140241953 | APPARATUS FOR MEDICAL STERILIZATION USING PLASMA - The present invention relates to an apparatus for sterilization which may be applied to a medical dry sterilizer, and more particularly, to an apparatus which injects hydrogen peroxide so as to generate plasma and OH radicals which are effective in sterilization, so as to achieve the sterilization of a treated object. According to the present invention, the apparatus for sterilization comprises: a sterilizing reactor in which sterilization is performed on a treated object; a vacuuming unit which is equipped with a vacuum pump connected to the sterilizing reactor and which vacuumizes the interior of the sterilizing reactor; a hydrogen-peroxide supply unit which supplies hydrogen peroxide in a gas state to the interior of the sterilizing reactor; and a microwave-plasma generating unit which generates plasma using microwaves. The microwave-plasma generating unit is provided with an electromagnetic-wave generating source which generates microwaves; a plasma-generating unit which interconnects the hydrogen-peroxide supply unit and the sterilizing reactor such that hydrogen peroxide is supplied to the sterilizing reactor, and which generates plasma using microwaves; and a microwave guide which delivers the microwaves generated from the electromagnetic-wave generating source to the plasma-generating unit. | 08-28-2014 |
Dong Chan Seok, Daejeon-Si KR
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20120160692 | LIQUID MEDIUM PLASMA DISCHARGE GENERATING APPARATUS - A liquid medium plasma discharge generating apparatus includes a main body; a power electrode, provided at one side within the main body, for receiving electric power; a diaphragm member provided within the main body, and consisting of a dielectric defining one or more holes or slits; and a liquid medium charged inside the main body, wherein a ground electrode may be further provided in the main body, opposite the power electrode with the diaphragm member therebetween, whereupon the diaphragm member is arranged contacting the ground electrode. | 06-28-2012 |
Dong-Ju Seok, Changwon-City KR
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20110210238 | ENCODER - An encoder which measures displacement of a moving part includes a light-emitting unit; a moving part which moves relative to the light-emitting unit; a first pattern track which includes a plurality of first unit patterns sequentially formed on the moving part, separated from one another and having different widths; a first light-receiving unit which is disposed to correspond to the light-emitting unit and detects first information light received from the light-emitting unit via a first pattern of the first unit patterns; at least one second light-receiving unit which is disposed to correspond to the light-emitting unit and detects second information about light received from the light-emitting unit via at least one second pattern of the first unit patterns; and a displacement calculating unit which calculates a relative displacement of the moving part with respect to a reference position based on the first and second information. | 09-01-2011 |
Doo-Ik Seok, Gwacheon Si KR
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20120002651 | Mobile Internet Access Point For Wireless LAN Terminals - A mobile Internet access point is disclosed that connects a wireless LAN terminal to a mobile Internet. The mobile Internet access point includes: a plurality of mobile Internet access units, a wireless LAN access unit, and a converting unit. The mobile Internet access units communicate with one or more base stations, respectively, and are connected to a mobile Internet. The wireless LAN access unit is connected to one or more wireless LAN terminals that can be connected to a wireless LAN and manages connected wireless LAN terminals. The converting unit converts wireless data, received by the wireless LAN access unit, into mobile Internet data following the protocol of the mobile Internet. The converting unit also converts mobile Internet data, received via the plurality of mobile Internet access units, into wireless LAN data following the protocol of the wireless LAN. Therefore, although one of the mobile Internet access units does not work, the remaining mobile Internet access units can continue communicating with the base stations, thereby providing services to the wireless LAN terminal without interruption. | 01-05-2012 |
Hye Joon Seok, Incheon KR
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20130031798 | DRYING APPARATUS AND WASHING MACHINE HAVING THE SAME AND CONTROL METHOD THEREOF - A drying apparatus having a structure capable of improving condensation efficiency, and a washing machine having the same. The washing machine including a cabinet, a tub installed inside the cabinet, a drum rotatably installed inside the tub, a condenser duct configured to condense moisture in air introduced from the inside the drum, a drying duct configured to heat the air introduced from the condenser duct and supply the heated air to the inside the drum, and a condensation water storage unit formed at a circumference of the condenser duct to store condensation water that is used to condense the moisture in the air moving inside the condenser duct. | 02-07-2013 |
Jae Hwan Seok, Jeollabuk-Do KR
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20140328951 | Composition for Preventing and Treating Vision Deterioration and Age-Related Macular Degeneration through Retinal Repair Using Ginseng/Red Ginseng Extracts and Ginsenoside - The present invention provides a composition comprising ginseng extract, red ginseng extract or ginsenosides as active ingredients for the prevention, slowed progression, and treatment of macular degeneration. More specifically it provides pharmaceutical composition to improve visual function by regenerating the transport characteristics of Bruch's membrane. | 11-06-2014 |
Jaemin Seok, Daiseo-Gu KR
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20100140622 | THIN FILM TRANSISTOR, FABRICATING METHOD OF THIN FILM TRANSISTOR AND DISPLAY DEVICE USING THE SAME - A thin film transistor comprises: a first transistor region and a second transistor region defined on a substrate; and a first transistor and a second transistor respectively disposed on the first and second transistor regions, the first transistor comprising: a first semiconductor layer having source, channel, and drain regions defined on the substrate; a first insulating film disposed on the first semiconductor layer; a first transparent electrode disposed on the first insulating film and formed corresponding to the channel region of the first semiconductor layer; and a second insulating film disposed on the first transparent electrode, and the second transistor comprising: a second semiconductor layer having source, channel, and drain regions defined on the substrate; the first insulating film disposed on the second semiconductor layer; a second transparent electrode disposed on the first insulating film and formed corresponding to the channel region of the second semiconductor layer; a second gate disposed on the second transparent electrode; and the second insulating film disposed on the second gate. | 06-10-2010 |
Jae-Myung Seok, Buk-Gu KR
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20100165226 | Mother substrate for liquid crystal display device and method of fabricating the same - A mother substrate for a liquid crystal display device includes: a substrate; a plurality of unit array patterns on the substrate, each of the plurality of unit array patterns including a gate line, a data line crossing the gate line, a thin film transistor connected to the gate line and the data line and a pixel electrode connected to the thin film transistor; a first electrostatic discharge pattern surrounding the plurality of unit array patterns; a second electrostatic discharge pattern connected to the gate line and crossing the first electrostatic discharge pattern; and a third electrostatic discharge pattern connected to the data line and crossing the first electrostatic discharge pattern, the third electrostatic discharge pattern contacting the second electrostatic discharge pattern. | 07-01-2010 |
Jang Hyeon Seok, Icheon-Si KR
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20090166874 | Semiconductor Device and Method of Fabricating the Same - A semiconductor device and manufacturing method thereof are provided. The semiconductor device can include an interlayer dielectric layer on a substrate, a metal layer on the interlayer dielectric layer, and an impure anti-reflection film on the metal layer. The impure anti-reflection film can be formed through an in situ process. | 07-02-2009 |
20090166878 | Semiconductor Device and Method of Fabricating the Same - Disclosed are a semiconductor device and a method of fabricating the same. The semiconductor device includes an interlayer dielectric film on a substrate, a plug in the interlayer dielectric film, a metal layer on the plug, and an impure anti-reflective coating (ARC) layer on the metal layer. | 07-02-2009 |
Jang Hyeon Seok, Daejeon KR
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20140363985 | Novel Amino-Silyl Amine Compound, Method for Preparing the Same and Silicon-Containing Thin-Film Using the Same - Provided are a novel amino-silyl amine compound, a method for preparing the same, and a silicon-containing thin-film using the same, wherein the amino-silyl amine compound has thermal stability and high volatility and is maintained in a liquid state at room temperature and under a pressure where handling is easy to thereby form a silicon-containing thin-film having high purity and excellent physical and electrical properties by various deposition methods. | 12-11-2014 |
Jeong Kee Seok, Incheon KR
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20140061070 | METHOD FOR MANUFACTURING A CASE FOR A PORTABLE ELECTRONIC DEVICE, AND CASE FOR A PORTABLE ELECTRONIC DEVICE - Provided is a method for manufacturing a case for a portable electronic device. The method includes: adhesive applying for applying an adhesive to a back side of a sliced veneer sheet; reinforcing strengthener attaching for attaching a reinforcing strengthener, which has a higher tensile and rupture strength than the sliced veneer sheet, to the back side of the sliced veneer sheet, so as to reinforce a strength of a sliced veneer; elastic layer forming for providing an elastic layer, which is made of a more elastic material than the sliced veneer sheet, to a surface of the reinforcing strengthener so as to provide elasticity to the sliced veneer sheet; and injection molding for injection-molding a case body that is formed of a synthetic resin material to cover at least one side of the portable electronic device, by inserting the sliced veneer sheet, the reinforcing strengthener, and the elastic layer into a mold. | 03-06-2014 |
Jeong-Mi Seok, Suwon-Si KR
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20090197523 | METHOD AND SYSTEM FOR PROVIDING PAID CONTENTS IN A PORTABLE BROADCASTING SERVICE - A method and system for providing paid service contents in a portable broadcasting service are provided, in which a first broadcasting-receiving terminal requests service purchase by indicating paid contents to be purchased and designating a service consumer to receive the paid contents, and a broadcasting server provides the paid contents to a second broadcasting-receiving terminal corresponding to the service consumer when the purchase of the paid contents is successful. | 08-06-2009 |
20110238693 | APPARATUS AND METHOD FOR SEARCHING IN MOBILE TERMINAL BY USING ONTOLOGY DATABASE - An apparatus and method search for data in a mobile terminal by using an ontology database. A function and data of the mobile terminal are managed in an ontology database. A keyword is received through a search function. Using the ontology database, one or more data related to the inputted keyword is searched. And the searched data is displayed. | 09-29-2011 |
Jin Oh Seok, Gwangju KR
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20090090123 | Refrigerator Controlling Water Supply and Control Method Thereof - A refrigerator which supplies water by driving a water valve installed on a flow path connected between a water supply source and a dispenser and a control method thereof are disclosed. A driving voltage is applied to the water valve in a start-up operation and the phase of the driving voltage applied to the water valve is controlled after the start-up operation to reduce an average voltage, thereby preventing a malfunction due to overheat of the water valve. | 04-09-2009 |
Jin Su Seok, Gyunggi-Do KR
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20120236248 | CAMERA MODULE - Disclosed herein is a camera module including: a lens barrel mounted with a camera lens; a housing including an exposing hole and guide portions formed on the top thereof, the exposing hole being opposite to the camera lens; a printed circuit board fixed to the housing; and an LC lens module including an LC lens and guided to the guide portions of the housing to thereby be coupled to the housing so that the LC lens is positioned on the same axis as the center of the lens. | 09-20-2012 |
20130076177 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor including: a rotor part including a rotor core having a shaft fixedly coupled to the center thereof and a plurality of rotor salient poles formed to be protruded from an outer peripheral surface of the rotor core; a stator part including a stator yoke having the rotor part rotatably received in an inner portion thereof and a plurality of stator salient poles formed to be protruded from the stator yoke in a direction toward the rotor salient poles so as to correspond to the rotor salient poles and having coils wound therearound; and a printed circuit board fixedly coupled to an upper portion of the stator part and including a plurality of ground parts having the coils penetrating therethrough, the coil being wound around the plurality of stator salient poles. | 03-28-2013 |
20130169082 | FAN MOTOR ASSEMBLY - Disclosed herein is a fan motor assembly. A motor includes a rotor unit and a stator unit. An impeller is provided on an upper end of a motor shaft of the motor. The impeller is rotated by the motor to suck air. The impeller includes a pair of plates that face each other, and a plurality of blades that are disposed between the plates at positions spaced apart from each other at regular intervals. A diffuser is disposed around an outlet formed in a periphery of the impeller. A motor housing encases the rotor unit and the stator unit therein. A sensing unit is provided on a lower end of the motor shaft that extends outwards from the motor housing. The sensing unit senses the rotation of the rotor unit. An inductor is installed in the motor housing. | 07-04-2013 |
20130171013 | MOTOR ASSEMBLY FOR VACUUM CLEANER - Disclosed herein is a motor assembly for a vacuum cleaner, the motor assembly including: an inlet introducing air therethrough; a motor; an impeller installed on a shaft of the motor and including a plurality of blades disposed at predetermined intervals between a pair of plates facing each other so that it rotates by the motor to suck the air; a diffuser disposed at an outer side of a discharge hole formed at an edge of the impeller; a first fan including a plurality of blade parts disposed at predetermined intervals while having the shaft as a concentric axis and disposed beneath the diffuser; and an outlet discharging the air to the outside. | 07-04-2013 |
Jin-Su Seok, Suwon-Si KR
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20110292273 | CAMERA MODULE - A camera module is disclosed. The camera module in accordance with an embodiment of the present invention includes a lens, an actuator that moves the lens in a direction of optical axis, and an image sensor that converts an image incident through the lens to an electrical signal and has extended depth of field. | 12-01-2011 |
Jin Woo Seok, Incheon KR
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20120026112 | IMAGE DISPLAY APPARATUS AND METHOD THEREOF - Provided are a stereographic image display apparatus and a manufacturing method thereof. The stereographic image display apparatus includes an image display unit and a touch sensing unit which is positioned on the image display unit and is configured to interpose a lens array between a first transparent electrode layer and a second transparent electrode layer. The manufacturing method of the stereographic image display apparatus includes: allowing a transparent conductive material to be deposited on both surfaces of a lens array; forming first and second transparent electrode layers by etching the transparent conductive material deposited on the both surfaces of the lens array thereby generating a touch sensing unit; and adhering the touch sensing unit to an upper surface of an image display unit. | 02-02-2012 |
20120026159 | ACTIVE TYPE DISPLAY APPARATUS AND DRIVING METHOD FOR PROVIDING STEREOGRAPHIC IMAGE - An active-type stereographic image display apparatus includes an image display unit; a touch sensing unit to sense a touch position through a first transparent electrode layer and a second transparent electrode layer that are arranged to cross with each other, and to separate an image output from the image display unit through a lens array into a first eye image and a second eye image based on a refractive index of light; and a lens driving control unit to control a focal length by controlling the lens array. The method for driving the active-type stereographic image includes displaying a stereographic image comprising a first eye image and a separate second eye image, sensing a touch position of a user input, separating an image output into a first eye image and a second eye image, and controlling a focal length provided by a lens array. | 02-02-2012 |
Jinwuk Seok, Daejeon KR
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20110110421 | RATE CONTROL METHOD FOR VIDEO ENCODER USING KALMAN FILTER AND FIR FILTER - A rate control method per block for a video encoder, includes estimating an average bit rate of a block; and determining a variation of a quantization coefficient such that an objective function based on the difference between an objective bit rate and the estimated average bit rate is minimized. | 05-12-2011 |
20120121236 | APPARATUS AND METHOD FOR GENERATING DIGITAL CINEMA CONTENT AND APPARATUS AND METHOD FOR PLAYING DIGITAL CINEMA CONTENT - Provided are an apparatus and method for generating digital cinema content and an apparatus and method for playing digital cinema content. The method of playing digital cinema content using a digital cinema package (DCP) including frame data having a first resolution and length information about frame data having a second resolution lower than the first resolution, and a key delivery message (KDM) includes obtaining a material exchange format (MXF) file and a decryption key by parsing the DCP and the KDM, extracting an encrypted triplet from the MXF file, extracting the length information about the second-resolution frame data using the encrypted triplet and the decryption key, decrypting an amount of data required to decrypt the second-resolution frame data in the first-resolution frame data using the length information about the second-resolution frame data, and decoding the decrypted second-resolution frame data. | 05-17-2012 |
Jin Wuk Seok, Daejeon KR
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20090046779 | Method and apparatus for determining block mode using bit-generation probability estimation in moving picture coding - Provided are a method and apparatus for determining a block mode using bit-generation probability estimation in motion picture coding. In H.264 video coding for Internet protocol (IP)-television (TV), the method and apparatus first determine whether or not a current block mode is a skip mode or a direct-prediction mode using bit-generation probability estimation, thereby reducing the amount of computation. By minimizing the amount of computation for determining a block mode, it is possible to increase an encoding rate and also minimize deterioration in image quality. | 02-19-2009 |
20140043347 | METHODS FOR JPEG2000 ENCODING AND DECODING BASED ON GPU - Methods for Joint Photographic Experts Group (JPEG) 2000 encoding and decoding based on a graphic processing unit (GPU) are provided. The method for JPEG2000 encoding based on a GPU includes receiving input image data from a central processing unit (CPU), encoding the image data, and transferring the encoded image data to the CPU. | 02-13-2014 |
Jong-Heon Seok, Gyeongsangbuk-Do KR
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20130122320 | Martensitic Stainless Steel and Production Method Therefor - A martensitic stainless steel for use in tableware, knives, scissors and the like, containing in % by weight, 0.10 to 0.50% carbon and 11 to 16% chromium, and a production method therefore. A production method for mid-carbon martensitic stainless steel in a strip-casting device comprising a pair of rolls rotating in opposite directions, edge dams respectively provided to both sides of the rolls so as to form a molten steel pool, and a meniscus shield for supplying inert nitrogen gas to the upper surface of the molten steel pool, wherein a stainless-steel thin sheet is produced by supplying a molten stainless steel of the above composition to the molten steel pool via a nozzle from a tundish, and a hot-rolled annealed strip is produced to a rolling reduction of 5 to 40% using in-line rollers, and relates to martensitic stainless steel produced by the production method | 05-16-2013 |
Jonghoon Moo Seok, Gyeongsangbuk-Do KR
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20110294042 | STAINLESS STEEL FOR POLYMER FUEL CELL SEPARATOR AND METHOD FOR PREPARING SAME - There are provided a ferrite stainless steel for a polymer fuel cell separator having excellent corrosion resistance and interfacial contact resistance under an operating environment of a polymer fuel cell, and a preparation method of the stainless steel. A stainless steel includes C: 0.02 wt % or less, N: 0.02 wt % or less, Si: 0.4 wt % or less, Mn: 0.2 wt % or less, P: 0.04 wt % or less, S: 0.02 wt % or less, Cr: 25.0 to 32.0 wt %, Cu: 0 to 2.0 wt %, Ni: 0.8 wt % or less, Ti: 0.5 wt % or less, Nb: 0.5 wt % or less, waste Fe and inevitably contained elements. A preparation method of the stainless steel having a second passive film formed on a surface thereof includes forming a first passive film on the surface of the stainless steel by bright-annealing or annealing-pickling the stainless steel; removing the first passive film by pickling the stainless steel in a 10 to 20 wt % sulfuric acid solution at a temperature of 50 to 75° C. for a predetermined time; water-washing the stainless steel; and forming the second passive film by performing a passivation treatment on the stainless steel in the mixture of a 10 to 20 wt % nitric acid and a 1 to 10 wt % fluorine acid at a temperature of 40 to 60° C. for the predetermined time. Accordingly, it is possible to prepare a stainless steel having reduced elution resistance and excellent corrosion resistance and to produce a stainless steel for a polymer fuel cell separator, which has low interfacial contact resistance and excellent long-term performance even under a fuel cell operating condition of 60 to 150° C. and various surface roughness conditions. | 12-01-2011 |
Jong-Myung Seok, Daedeok-Gu KR
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20110148562 | FIELD COIL ASSEMBLY OF ELECTROMAGNETIC CLUTCH FOR POWER TRANSMISSION APPARATUS AND MANUFACTURING METHOD THEREOF - Disclosed is a field coil assembly of an electromagnetic clutch including a bobbin from which lead wires, which are both ends of a coil made of an aluminum-based material, protrude outward, a core that surrounds the bobbin such that the lead wires are exposed, a bobbin terminal installed at the bobbin while being adjacent to the lead wire of the coil, and a connector coupled to the core and including a lead wire terminal. The lead wires of the coil are connected to the bobbin terminal through heating and pressing. | 06-23-2011 |
Joo-Myoung Seok, Daejon KR
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20100070644 | APPARATUS AND METHOD FOR TIME-SHIFT SERVICE BASED ON MULTIMEDIA INFORMATION, APPARATUS FOR REPRODUCING MULTIMEDIA USING THE SAME - Provided are a time shift service apparatus and method based on multimedia information, and a multimedia reproducing apparatus using the same. The timeshift service apparatus includes: a timeshift buffering unit for storing a multimedia stream according a timeshift service requested from an outside device; a time obtaining unit for obtaining time information about times of starting and ending a timeshift service according to the timeshift service request; a memory managing unit for storing a multimedia stream, which is serviced based on the obtained time information by the time obtaining unit, in the timeshift buffering unit; and an information generating unit for generating detailed information for the multimedia stream stored in the timeshift buffering unit. | 03-18-2010 |
Joo-Myoung Seok, Daejeon KR
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20100074256 | SERVICE RECOGNITION METHOD OF ROUTER IN IPV6 ENVIRONMENT - Provided is a service recognition method of a router in IPv6 environment, allowing a router to facilitate access of a mobile terminal to various services by using service information of a service header and identification information of the mobile terminal included in an IPv6 packet transmitted from the mobile terminal. The service recognition method includes: a) looking up predefined service cache by using service identification of IPv6 packet as index key of the service cache when the IPv6 packet including the service ID in a service header is received from the mobile terminal; b) changing destination address into address of the service server when the address of the service server and service control information are determined through the lookup of the service-cache to request service and perform service control; and c) routing to the mobile terminal by using the IPv6 packet when service response is transmitted from the service server. | 03-25-2010 |
20120151330 | METHOD AND APPARATUS FOR ENCODING AND DECODING XML DOCUMENTS USING PATH CODE - A method and apparatus of encoding and decoding an Extensible Markup Language (XML) document using a path code is provided. | 06-14-2012 |
20130156407 | PROGRESSIVE VIDEO STREAMING APPARATUS AND METHOD BASED ON VISUAL PERCEPTION - A progressive video streaming apparatus and method based on a visual perception are provided, and the progressive video streaming apparatus may include a gaze detector to detect gaze information including at least one of a location of a focus and a viewing angle of a user, a video playback quality determiner to determine video playback quality layers, based on the detected gaze information, a progressive streaming receiver to request video data and receive the video data, using a visual perception priority based on the detected gaze information, and a visual perception-based player to play back the received video data, by controlling an interactive delay to be reduced below a selected criterion, while reducing a visually recognized quality change in the received video data below another selected criterion. | 06-20-2013 |
20130194292 | APPARATUS AND METHOD FOR CORRECTING COLOR OF IMAGE PROJECTION DEVICE - An apparatus and a method for correcting colors of an image projection device are provided. The method includes: acquiring a photographed image by photographing a sample image projected on projection surface; generating input-output color information for n regions, based on color values of a block in the sample image and corresponding color values of the block in the photographed image; selecting one of the n regions of photographed images as a reference region; generating look-up tables (LUTs) for non-reference regions, based on the reference region and the input and output color information; and correcting colors of input images to be projected by the image projection device using the look-up tables, thereby minimizing color difference of the input images on the projection surface for both intra and inter projection device color correction while simplifying the correction procedure. | 08-01-2013 |
20150026242 | APPARATUS AND METHOD FOR PROVIDING CONTENT - A method of receiving content in a client is provided. The method may include receiving, from a server, a spatial set identifier (ID) corresponding to a tile group including at least one tile, sending, to the server, a request for first content corresponding to metadata, and receiving, from the server, the first content corresponding to the request. | 01-22-2015 |
Ju-Gon Seok, Suwon-Si KR
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20100171736 | Plasma display panel and associated methods - A plasma display panel includes electrodes repeatedly disposed on a first substrate in an order of a sustain electrode, a scan electrode, a scan electrode and a sustain electrode, first barrier ribs disposed to overlap the sustain electrodes, and second barrier ribs disposed to overlap the scan electrodes and having a lower height than the first barrier ribs, wherein a space between the first barrier ribs and the second barrier ribs forms a main discharge space, a space between adjacent first barrier ribs forms an auxiliary discharge space, and the scan electrodes are formed to protrude to the auxiliary discharge space. | 07-08-2010 |
Jung Seok, Gyunggi-Do KR
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20110101825 | PIEZOELECTRIC MOTOR - Disclosed herein is a piezoelectric motor. The piezoelectric motor includes a piezoelectric vibrating body, a dummy piezoelectric sheet layer and a contact member. The piezoelectric vibrating body is configured such that piezoelectric sheets on which electrode patterns are printed are stacked on one on another. The dummy piezoelectric sheet layer is provided on the piezoelectric vibrating body. The contact member is provided on the outer surface of the dummy piezoelectric sheet layer. The contact member transmits vibrations generated from the piezoelectric vibrating body to the outside. Therefore, the piezoelectric motor can minimize a problem in which vibration characteristics vary attributable to contact between a contact member and an electrode pattern of a piezoelectric vibrating body. | 05-05-2011 |
Jun Ho Seok, Changwon City KR
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20100263655 | BURNER AND COOKING DEVICE - A cooking device is provided. The cooking device includes a cavity and a burner. The cavity provides a cooking chamber. The burner is in the cavity and heats food in the cooking chamber. The burner includes a supply part and a combustion part. The supply part supplies a gaseous fuel mixed with air. The combustion part burns the mixed gaseous fuel and has an open curve shape. | 10-21-2010 |
20100263656 | BURNER AND COOKING DEVICE - A cooking device is provided. The cooking device includes a cavity and a burner. The cavity provides a cooking chamber. The burner is at the cooking chamber in the cavity and heats food in the cooking chamber. The burner includes a supply part and a combustion unit. A gaseous fuel mixed with air flows in the supply part. The combustion unit is connected to the supply part to receive the mixed gaseous fuel and to burn the received mixed gaseous fuel flowing within the combustion unit. The combustion unit has a single loop shape. | 10-21-2010 |
20100263657 | GAS COOKER - A gas cooker is provided. First and second front burners are disposed on the left and the right of a front upper surface of a top plate at an interval in a row. Lower ignition parts of the first and second front burners are disposed at a distance from an imaginary straight line passing through central points of the first and second front burners in parallel with the front end of the top plate, toward a front end of the top plate. | 10-21-2010 |
20100263658 | GAS COOKER - Provided is a gas cooker. When foods are cooked using a top burner, inclinations of main flame holes defined in the top burner are different according to positions of the main flame holes to prevent textile disposed adjacent to a front end of a top plate from burning. Thus, a user may further safely cook the foods. | 10-21-2010 |
20110120444 | TOP-BURNER AND COOKER COMPRISING THE SAME - A top burner and a cooker having the top burner are provided. A flame transfer slit for guiding the flame formed by the combustion of the mixed gas at an outer burner to an inner burner. A shielding member is provided to shield the flame transfer slit. Therefore, the object to be heated is uniformly heated and the flame transfer from the outer burner to the inner burner can be effectively realized. | 05-26-2011 |
Jun-Ho Seok, Changwon-Si KR
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20110186038 | Burner And Gas Oven Including The Same - A burner and a gas oven including the burner are provided. Food placed in an oven chamber is heated and cooked by using a burner disposed at an upper side of the oven chamber and having a fork or grating shape. Therefore, the food can be heated more uniformly. | 08-04-2011 |
20110265781 | Cooking Appliance - Provided is a cooker. The cooker includes a cavity including a cooking chamber; and a burner disposed in the cavity, receiving a mixed gas of a gas and air, and generating a flame by burning the mixed gas, in which the burner includes a supplier supplying the gas and the air and at least one combustor receiving the gas and the air from the supplier and including a plurality of flame holes generating the flame, and the combustor includes a gap capable of shifting the flame by communicating between the plurality of flame holes. | 11-03-2011 |
Jun-Ho Seok, Gyeongnam KR
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20110209694 | REFLECTOR AND GAS OVEN RANGE COMPRISING THE SAME - A gas oven range and a reflector are provided. The gas oven range comprises an oven chamber in which food is cooked and an upper burner inside the oven chamber. The reflector reflects flame and heat and divides the oven chamber into a combustion space and an exhaust space. An exhaust hole is formed in the reflector to discharge combustion gas to the exhaust space, which is generated by combustion of gas at the burner in the combustion space. Therefore, incomplete combustion of gas is prevented, and leakage of flame and radiant heat generated by combustion of gas is prevented, thereby improving gas combustion efficiency. | 09-01-2011 |
Juno Seok, Gyeongsangbuk-Do KR
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20140363368 | Titanium Dioxide Nanoparticle, Titanate, Lithium Titanate Nanoparticle, and Preparation Methods Thereof - The present invention relates to titanium dioxide nanoparticles, titanate, lithium titanate nanoparticles, and preparation methods thereof. According to the present invention, titanium dioxide nanoparticles having a quasicrystalline phase corresponding to an intermediate form between a crystalline phase and an amorphous phase may be provided. | 12-11-2014 |
Ka Moon Seok, Bupyeong-Gu KR
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20090170315 | Method for Forming Tungsten Plug - A method for forming a tungsten plug is provided. The method can include forming a first tungsten seed layer on an insulating layer having a via hole, forming a second tungsten seed layer on the first tungsten seed layer, and forming a tungsten-buried layer in the via hole. The second tungsten seed layer can be from about 1.3 times to about 2.5 times thicker than the first tungsten seed layer. | 07-02-2009 |
Keon-Yong Seok, Suwon-Si KR
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20110267209 | TRELLIS ENCODER AND TRELLIS ENCODING DEVICE HAVING THE SAME - A trellis encoding device includes a plurality of trellis encoders to perform trellis-encoding of a transport stream into which a supplementary reference signal (SRS) has been inserted, and performs a memory reset in a region that precedes an SRS; and a parity compensation unit to compensate for parities of the transport stream in accordance with values stored in memories included in the trellis encoders. The plurality of trellis encoders may be implemented in diverse types. The trellis encoding device can perform a memory reset selectively using the stored value of the memory and the inverted value thereof, or selectively using the stored value of the memory and a fixed value. By properly resetting the memory in processing the transport stream into which the SRS has been inserted, DC offset can be reduced. | 11-03-2011 |
Keun G. Seok, Gyeonggi-Do KR
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20130211887 | MULTIMEDIA ADVERTISEMENT DISPLAY METHOD AND SYSTEM USING TOUCH SCREEN AND PROJECTOR - A method and system for displaying a multimedia advertisement using a touch screen and a projector, the method and system displaying a plurality of icons such as an advertising icon, and the like, on a touch screen, and displaying a multimedia advertisement corresponding to an icon on a wall screen using a projector when the icon deviates from an area of the touch screen in response to a touch event of a user, is provided. | 08-15-2013 |
Kim Seok, Suwon-Si KR
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20120032656 | VOLTAGE REGULATOR FOR IMPEDANCE MATCHING AND PRE-EMPHASIS, METHOD OF REGULATING VOLTAGE FOR IMPEDANCE MATCHING AND PRE-EMPHASIS, VOLTAGE MODE DRIVER INCLUDING THE VOLTAGE REGULATOR, AND VOLTAGE-MODE DRIVER USING THE METHOD - Disclosed herein are a voltage regulator for impedance matching and pre-emphasis, a method of regulating voltage for impedance matching and pre-emphasis, and a voltage mode driver using the voltage regulator and the method. The voltage regulator includes a first loop circuit configured to regulate a supply voltage for a pre-driver of a main tap, a second loop circuit configured to regulate a supply voltage for a pre-driver of a pre-emphasis tap, and a driver voltage determination unit configured to include a reference resistor and to determine supply voltage for the voltage mode driver. The first loop circuit includes a variable resistor, a first main tap replica, and a first OP amp, and the second loop circuit includes a resistor having a resistance value identical to that of the reference resistor of the voltage regulator, a second main tap replica, a pre-emphasis tap replica, and a second OP amp. | 02-09-2012 |
Ki-Won Seok, Suwon-Si KR
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20080261140 | Electrophotographic developing agent - An electrophotographic developing agent is provided that includes a binder resin, a releasing agent, a colorant, and a charge control agent. By using a binder resin having a high acid value and a mixture of two waxes having different melting points as a releasing agent, a electrophotographic developing agent is obtained, which has excellent fusing property and durability and does not result in hot offset and wrap jamming. | 10-23-2008 |
20090155701 | TONER AND PROCESS OF PREPARING THE SAME - A toner includes a core containing a binder resin, wax, and a colorant, and an external additive layer coating the core, wherein the core is prepared such that it is extruded and extended to have a fiber phase, and is pulverized. The toner has an improved fixing ability to allow an electrostatic image to be fixed at a low temperature while having an excellent durability and an improved storage stability, while exhibiting reduced toner blocking and offset phenomena. | 06-18-2009 |
Kwang Mog Seok, Suwon-Si KR
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20120241438 | PLASMA ARC TORCH POSITIONING APPARATUS - The present invention relates to an apparatus for adjusting a position of a plasma arc torch. The apparatus includes an elevation apparatus configured to raise and lower the plasma arc torch with respect to molten silicon, a rotary apparatus configured to circumferentially rotate the plasma arc torch with respect to the molten silicon, and an angle adjustment apparatus configured to adjust an angle of the plasma arc torch with respect to the molten silicon. In addition, a plurality of plasma arc torches is provided and radially disposed at predetermined intervals. Therefore, time consumed to melt solid silicon to form the initial molten silicon is reduced, and casting speed is increased. In addition, fusibility of a source material can be improved, the source material can be stably melted, and economic continuous casting and a high quality silicon ingot for a solar cell can be manufactured. | 09-27-2012 |
Man Ho Seok, Seongnam-Si KR
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20140362499 | ELECTRONIC CONTROL APPARATUS FOR VEHICLE USING WATER PROOF TYPE HOUSING SEALING AND METHOD THEREOF - The present disclosure relates to an electronic control apparatus for a vehicle using waterproof housing sealing and a manufacturing method thereof, and the electronic control apparatus includes: an electronic control element configured to electrically control each part of the vehicle; a connector electrically connected with the electronic control element; a housing having an opened one side surface, the connector connected with the electronic control element being inserted from the one side surface in the slot type to be accommodated in the housing; and a connector cover coupled with the connector to cover the opened one side surface of the housing, in which a flange extended by a predetermined length toward the outside is formed on the opened one side surface of the housing along a side surface of the housing, and a potting layer is formed inside the flange on the connector cover. | 12-11-2014 |
20140362534 | ELECTRONIC CONTROL APPARATUS FOR VEHICLE USING SLOPED STRUCTURE AND METHOD THEREOF - The present disclosure relates to an electronic control apparatus for a vehicle using a sloped structure, and a manufacturing method thereof, in which an appropriate space is maintained with a housing body in order to maintain thermal glue applied onto the PCB when assembling an electronic control apparatus in a sliding manner, and the PCB is assembled by making the PCB be in contact with an upper housing body along a sloped structure formed in a distal end housing at a point at which the slide type assembling is ended, so that the thermal glue may be uniformly applied onto the PCB and be maintained during a slide type manufacturing process. | 12-11-2014 |
Man Ho Seok, Goyang-Si KR
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20110102336 | USER INTERFACE APPARATUS AND METHOD - A user interface apparatus may include a display unit to display a screen according to an application, a touch sensor to generate a touch signal if a touch is sensed on the display unit, a pressure sensor to generate a push signal if a push is sensed on the display unit, and an interface unit to determine an input according to the touch signal and the push signal, and to perform an operation of the application corresponding to the determined input. | 05-05-2011 |
20120169758 | APPARATUS AND METHOD FOR PROVIDING THREE-DIMENSIONAL INTERFACE - An apparatus to provide a three-dimensional (3D) interface and a method for providing a 3D interface are provided. The apparatus may output an interface space in a specific color using additive color mixtures of light, may sense a change in location of an object in the interface space, may sense the location change of the object as a motion, and may process an input corresponding to the sensed motion if the input corresponding to the sensed motion exists. The interface space may be a space in which the recognition areas of sensors overlap. | 07-05-2012 |
Mee Young Seok, Daejeon KR
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20110224083 | URACIL COMPOUNDS AND A HERBICIDE COMPRISING THE SAME - Disclosed are uracil compounds represented by Formula 1, a method for preparing the compounds, and a herbicide including the same as an active ingredient: | 09-15-2011 |
Min Gwang Seok, Ulju-Gun KR
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20090114096 | SEPARATION, PURIFICATION AND RECOVERY METHOD OF SF6, HFCs AND PFCs - A separation, purification and recovery method of SF | 05-07-2009 |
Min Shik Seok, Paju-Si KR
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20130169244 | DIGITAL BUCK-BOOST CONVERSION CIRCUIT AND METHOD OF OPERATING THE SAME - A digital buck-boost conversion circuit includes an analog-to-digital converter configured to convert an output voltage signal into a digital signal, a pulse period control block configured to output a pulse period control signal based on degrees of scattering at different frequencies of the digital signal, a pulse generation block configured to output a pulse based on the pulse period control signal, and a buck-boost converter configured to convert the pulse into the output voltage signal. | 07-04-2013 |
Myung-Ho Seok, Jungrang-Ku KR
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20130034620 | ANTIBACTERIAL SYNTHETIC FIBER AND MANUFACTURING METHOD THEREOF - Disclosed are an antibacterial synthetic fiber, and a method for manufacturing the same, characterized in that one or more antibacterial plant extracts are mixed with a fiber-formable polymer and the mixture is melt spun at 200˜300° C. The antibacterial synthetic fiber exhibits excellent and persistent antibacterial activity. In addition, the antibacterial synthetic fiber is superior in physical property to conventional antibacterial fibers and is suitable for use as a material for clothes. | 02-07-2013 |
Park Jun Seok, Gwangju-Shi KR
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20100314652 | PACKAGE FOR LIGHT EMITTING DEVICE - The present invention discloses a light emitting device package, comprising: a metal base; an electrical circuit layer provided at an upper side of the metal base for providing a conductive path; a light emitting device mounted in a second region having a smaller thickness than a first region on the metal base; an insulating layer sandwiched between the meta base and the electrical circuit layer; an electrode layer provided at an upper side of the electrical circuit layer; and a wire for electrically connecting the electrode layer and the light emitting device. Further, there is provided a light emitting device package which is improved in light emission efficiency since the light emitting device is placed on a small thickness portion of the metal base. | 12-16-2010 |
Sang Il Seok, Daejeon KR
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20090291044 | ANATASE TYPE TiO2 NANORODS AND ITS PREPARATION METHOD - Provided is a process which includes slowly adding dropwise chilled distilled water to titanium tetrachloride to prepare solution of titanium oxychloride; adding basic solution thereto to maintain pH of the titanium oxychloride solution within a range from 3.5 to 4, thereby providing a suspension of titanium oxyhydroxide precipitate; adding basic solution thereto to adjust the suspension of titanium oxyhydroxide precipitate to be weakly basic, and heating and stirring the mixture at 80 to 100° C.; isolating and collecting dihydroxy-oxotitanium from the heated and stirred suspension of titanium oxyhydroxide precipitate, and washing it with weakly basic aqueous solution; and adding distilled water and 20 to 500 folds of hydrogen peroxide on the basis of 1 mole of Ti | 11-26-2009 |
20120312375 | All-Solid-State Heterojunction Solar Cell - Provided is a highly efficient solar cell having a novel structure and excellent stability, and which may be mass-produced from an inexpensive material for enabling easy commercial availability thereof. More particularly, the solar cell of the present invention comprises: a porous inorganic electron-transporting layer containing metallic oxide particles; a light absorber containing inorganic semiconductors; and an organic hole transporting layer containing an organic photo-voltaic material. | 12-13-2012 |
20130065354 | Method for Manufacturing a Nanostructured Inorganic/Organic Heterojunction Solar Cell - Provided is a method for manufacturing a significantly high efficient solar cell having a novel structure and superior stability, and which can be mass-produced from an inexpensive material from an inexpensive material for enabling the easy commercial availability thereof. More particularly, the method of the present invention comprises the following step: (a) depositing slurry containing metal oxide particles and heat-treating the slurry to form a porous electron transporting layer; (b) forming inorganic semiconductors on surfaces of the metal oxide particles for the porous electron-transporting layer; and (c) impregnating the porous electron-transporting layer having the inorganic semiconductor formed thereon with a solution containing an organic photovoltaic material so as to form a hole transporting layer. | 03-14-2013 |
Seon Yeol Seok, Hamyang-Gun KR
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20090053369 | JELLY CANDY - A jelly candy is disclosed, which is capable of preventing an obstruction of an airway of a human body when eating the jelly candy, with a vertical through hole being formed at a center in an axial direction of a jelly. | 02-26-2009 |
Seoung-Hyun Seok, Suwon-Si KR
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20090015165 | Plasma generating apparatus - A plasma generating apparatus having superior plasma generation efficiency that uses a single reaction chamber. The plasma generating apparatus includes a RF generator for providing a RF power, an antenna for generating an electromagnetic field upon receiving the RF power, a reaction chamber for exciting/ionizing a reaction gas via the electromagnetic field, and generating a plasma, and a plasma channel for absorbing the RF power, and allowing a current signal to be induced to the plasma. | 01-15-2009 |
20100009097 | Deposition Apparatus and Deposition Method Using the Same - A deposition apparatus includes a gas inflow tube, a plasma electrode, a substrate support functioning as an opposite electrode to the plasma electrode and mounting a substrate thereon, a plasma connector terminal connected to the plasma electrode, a first voltage application unit connected to the plasma connector terminal to apply a voltage thereto in a continuous mode, and a second voltage application unit connected to the plasma connector terminal to apply a voltage thereto in a pulse mode. The voltage applied by the first voltage application unit is an RF voltage of about 13.56 MHz, and the voltage applied by the second voltage application unit is a VHF voltage ranged from about 27 MHz to about 100 MHz. | 01-14-2010 |
Seung Dae Seok, Seongnam-Si KR
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20100071847 | Wafer bonding apparatus - It is an aspect of the present invention to provide a wafer bonding apparatus having a pressing apparatus configured to press wafers fixed in a fixing apparatus, wherein the fixing apparatus is configured to allow the pressing apparatus to press the wafers without interference. The wafer bonding apparatus may include an upper wafer and a lower wafer, a support member configured to support the upper wafer and the lower wafer, a push member on the upper wafer, and a fixing apparatus configured to fix the push member to the support member, wherein the push member includes a fixing part extending outward from a periphery of the upper wafer, and the fixing apparatus is coupled to the fixing part. It is also an aspect of the present invention to provide a method for bonding wafers. | 03-25-2010 |
Sun Yul Seok, Gyeongsangnamdo KR
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20140260188 | COMBINED MULTI-PURPOSE POLLUTION-FREE CAR AND SNOWPLOW - Provided is a combined multi-purpose pollution-free vehicle and snowplow which comprises a hot water utilization and circulation pipe OSWL branching and circulating coolant heated by a vehicle engine from an induction connecting apparatus; a heater HTR secondarily heating air primarily heated by the hot water utilization and circulation pipe OSWL; a propeller OPE sending secondarily heated air to a distribution duct PEORUM; and a distribution duct PEORUM comprising a branching pipe so as to discharge secondarily heated air out of emission pipes PED disposed at the front, rear, left and right sides of the vehicle. | 09-18-2014 |
Won Gyun Seok, Uiwang-Si KR
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20130283721 | STEEL FRAME STRUCTURE USING U-SHAPED COMPOSITE BEAM - A steel frame structure includes brackets connected to columns to allow the columns to be connected to a girder. Each bracket includes a U-shaped plate having a bottom plate, side plates extended upwardly perpendicularly from both ends of the bottom plate, and base plates extended outwardly from the side plates, a vertical plate welded perpendicularly to the center of the bottom plate of the U-shaped plate in such a manner as to be parallel to the side plates, and a horizontal plate welded to the top end of the vertical plate in such a manner as to be parallel to the bottom plate of the U-shaped plate. The girder has a generally U-shaped section. | 10-31-2013 |
Won Woong Seok, Ichon-Shi KR
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20110158015 | DEVICE AND METHOD FOR GENERATING TEST MODE SIGNAL - A test mode signal generation device includes a pulse address generation unit configured to convert test address signals into pulse signals and generate pulse address signals, a pulse address split unit configured to generate converted test address signals in response to the pulse address signals, and a test mode signal generation unit configured to generate a test mode signal in response to the converted test address signals. | 06-30-2011 |
20110232078 | SEMICONDUCTOR APPARATUS AND REPAIRING METHOD THEREOF - A semiconductor apparatus includes a semiconductor chip through-line for transmitting signals commonly to a plurality of stacked semiconductor chips. The apparatus includes a first test pulse signal transmission unit configured to transmit a first test pulse signal to a first end of the semiconductor chip through-line when a power-up operation is performed; a second test pulse signal transmission unit configured to transmit a second test pulse signal to a second end of the semiconductor chip through-line after the first test pulse signal is transmitted; a first signal reception unit coupled to the first end of the semiconductor chip through-line, and configured to receive signals transmitted from the first and second test pulse signal transmission units; and a second signal reception unit coupled to the second end of the semiconductor chip through-line, and configured to receive the signals transmitted by the first and second test pulse signal transmission units. | 09-29-2011 |
Yongho Seok, Anyang KR
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20120304213 | METHOD FOR ACQUIRING INFORMATION IN A COEXISTENCE SYSTEM, AND APPARATUS USING SAME - A method for receiving a measurement report includes: transmitting, by an apparatus including a coexistence manager (CM), a measurement request message for acquiring a measurement report from at least one device that uses a channel in a TV band to a coexistence enabler (CE); and receiving, by the apparatus, a measurement response message including the result of the measurement results from the CE. The measurement request message includes a first element indicating which of a primary detection, a detection of a device that uses the TV band, and a channel load measurement is requested. The measurement request message includes at least one of a start frequency, an end frequency, a channel list, and a measurement time related to the measurement, and the measurement report includes at least one selected from among the result of primary detection, the result of the detection of the device that uses the TV band. | 11-29-2012 |
20130035125 | METHOD FOR ACQUIRING RESOURCES IN A COEXISTENCE SYSTEM, AND APPARATUS USING SAME - In a method of receiving one or more resources, an apparatus having a coexistence enabler entity transmits a request message containing information on one or more devices using channels within a TV band to a coexistence manager. Here, the information contains an available channel list obtained from the one or more devices using the channels within the TV band, and the request message further contains one or more of maximum power level, channel load and location information. In the method, the apparatus receives a response message for allocating the resources from the coexistence manager. Here, the response message further contains one or more of information on channel numbers, start frequency, end frequency and maximum power level. | 02-07-2013 |
Yongho Seok, Gyeonggi-Do KR
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20110090821 | DIRECT LINK SETUP METHOD AND CHANNEL ALLOCATION METHOD IN MULTI-CHANNEL WIRELESS COMMUNICATION NETWORK - Provided are a direct link setup procedure and a channel allocation mechanism in a multi-channel wireless communication network. The method includes transmitting a direct link setup request message comprising request information for specifying one or more channels, each of which desires to set up a direct link, among multiple channels, and receiving a direct link setup response message comprising response information for setting up the direct link to one or more channels in response to the direct link setup request message. | 04-21-2011 |
20110286405 | METHOD AND APPARATUS FOR DYNAMIC STATION ENABLEMENT PROCEDURE IN A WIRELESS LOCAL AREA NETWORK SYSTEM - A method of dynamic station enablement procedure in a wireless local area network (WLAN) is disclosed. A method of performing an enablement procedure by a first station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises receiving, from a second station, an enabling signal including advertisement protocol element with an advertisement protocol identification (ID) field which indicates an advertisement protocol the second station supports; and exchanging DSE (dynamic station enablement) related messages with the second station using a GAS (generic advertisement service) protocol. | 11-24-2011 |
20110299481 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 12-08-2011 |
20130072232 | Method and Apparatus for Performing a Channel Availability Query for a Plurality of Locations - The present invention relates to a method and apparatus for channel availability query on multiple locations in a wireless local area network system. A method for a station (STA) to perform a channel query procedure in a wireless communication system comprises: transmitting, at a first STA corresponding to a channel availability query requesting STA, a first message to a second STA supporting the channel availability query procedure, wherein the second STA corresponds to a channel availability query responding STA, wherein the first message comprises device location information of one or more locations for the channel availability query; and receiving, at the first STA from the second STA, a second message comprising channel availability information, wherein the channel availability information is commonly applicable to multiple locations within an area, when the device location information of the first message is for the multiple location within the area. | 03-21-2013 |
20130109403 | Method for Operating a Station in a White Space, and Apparatus for Same | 05-02-2013 |
20130114586 | Method and Apparatus for Receiving Multi-Band Information in a WLAN System - The present invention relates to a method and apparatus for receiving multi-band information in a WLAN system. The method for receiving multi-band information by a first station (STA), operating as an unlicensed device, within an available channel which is not used by a licensed device in a white space band of a WLAN system according to one aspect of the present invention comprises: allowing the first station to receive, from a second station, information about a first band and a second band through the first band that is currently being communicated with the first and second stations; and allowing the first station to communication with the second station through the second band, wherein the first station and the second station are multi-band stations that support the first band and the second band. | 05-09-2013 |
20130122951 | Method and Apparatus for Scanning Existing Networks in the White Space - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 05-16-2013 |
20130143613 | Method and Device for Transmitting and Receiving Available Channel Information Within White Space Band - The present invention relates to a method for a first station (STA) comprising: obtaining available channel information by accessing a database that manages the available channel information within the white space band, and transmitting a white space map (WSM) generated according to the available channel information to a second STA, the WSM includes a channel map field having a variable length, a length field including the length of the channel map field, and map ID information indicating a type of the WSM and whether the WSM being updated; and if the available channel information obtained from the DB indicates that no available channel exists within the white space band, a map ID is set to indicate that the WSM is the updated WSM, and the first STA transmits the WSM which is set as the length field to indicate that the length of the channel map field is 0. | 06-06-2013 |
20130156007 | Handover in White Space Band - A station forms a connection with a first access point (AP): a particular station for storing first active station identification information of an active station that manages the activation of the station serviced by said first AP accesses a region serviced by a second AP, and receives from said second AP a message for containing second active station identification information of the active station that manages the activation of the station serviced by said second AP; said first active station identification information is compared with said second active station identification information; and if said first active station identification information is different from said second active station identification information, a procedure for changing the active station and a handover to said second AP are performed to a second active STA corresponding to said second active station identification information. | 06-20-2013 |
20130170458 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 07-04-2013 |
20130177007 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - A method of transmitting a White Space Map information in a wireless local area network system (WLAN) is disclosed. A method of transmitting a white space map information from a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises transmitting, from the first station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element comprising information for first available channels, which are available for the unlicensed device, to the second station, wherein the WSM element comprises a device type field indicating which device type the list of the fist available channels is for. | 07-11-2013 |
20130195096 | Method and Apparatus for Scanning Existing Networks in TVWS - A method and an apparatus for scanning existing networks in TV White Space are disclosed. For scanning existing networks at a station to operate as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the method comprises: receiving a white space map (WSM) comprising information for available channels to be used for the unlicensed device to operate a wireless local area network (WLAN) operation and maximum transmission powers allowed for each of the available channels from an enabling station, wherein the enabling station is a station determining the available channels at its location using its own geographic location identification and a regulatory database access capability; and scanning the existing networks on the available channels identified within the received WSM. | 08-01-2013 |
20130205313 | Method and Apparatus for Transmitting and Receiving a Measured Report Frame in a Wireless Local Area Network System - A method of transmitting and receiving a measurement report frame in a wireless local area network (WLAN) is disclosed. A method of transmitting a measurement report frame form a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprising: receiving, at the first station, a measurement request frame from the second station; and transmitting, to the second station, the measurement report frame including a Primary Service Signal Map field indicating which TV channels are occupied by a primary service signal, wherein the primary service signal is a signal that requires protection by regulation. | 08-08-2013 |
20130231108 | Method and Apparatus for Operating Within White Space Band Using Message Indicating Whether Available Channel Information is Valid in Wireless System - A method and apparatus for operating within a white space band using a message indicating whether an available channel information is valid in the wireless system are disclosed. In a method for a first station (STA) to operate as an unlicensed device which is permitted to operate on an available channel within a White Space (WS) band of a wireless system, comprises: receiving a message indicating whether an available channel information of the first STA is valid from a second STA, wherein the available channel is a channel not used by a licensed device, wherein the message includes a Map ID of a current valid available channel information; and determining whether an existing available channel information of the first STA is valid by comparing a Map ID of the existing available channel information of the first STA with the Map ID included in the received message. | 09-05-2013 |
20130258994 | Method and Apparatus for Transmitting Channel Information in Cognitive Radio Network and Method and Apparatus for Performing Channel Switching - A method and apparatus for transmitting channel information used by a station form among TV white space channels, and a method and apparatus for performing channel switching are disclosed. A method for transmitting information of a channel used by a station from among TV white space channels includes determining one or more channels used by the station from among channels contained in a plurality of OFDM blocks, wherein each OFDM block includes one or more contiguous channels from among the TV white space channels, generating a message including first information indicating the lowest channel number from among channels contained in a first OFDM block from among the plurality of OFDM blocks, second information indicating the lowest channel number from among channels contained in a second OFDM block, third information indicating the one or more channels used by the station as bitmap information, and fourth information indicating a total amount of bandwidth used by the station, and transmitting the generated message. | 10-03-2013 |
20130294436 | METHOD AND APPARATUS FOR TRANSCEIVING A CONTACT VERIFICATION SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - The present document related to a method and apparatus for transceiving a signal capable of verifying the validity of an available channel in a wireless communication system. According to the present invention, a scheme for transceiving available channel information, a scheme for requesting/responding to a channel validity inquiry, and a scheme for transceiving a contact verification signal are provided, and accordingly, a scheme for supporting the accurate and efficient operation of an unlicensed device while protecting a licensed device in a whitespace band is provided. | 11-07-2013 |
20130308577 | METHOD AND APPARATUS OF OPERATING CHANNEL REQUEST AND RESPONDING TO THE OPERATING CHANNEL REQUEST IN A WIRELESS LOCAL AREA NETWORK SYSTEM - A method for operating channel request and responding to the operating channel request in a wireless local area network (WLAN) is disclosed. A method of operating channel request by a first station in a regulatory domain where an unlicensed device is permitted to operate at a given time in a given geographical area with regard to a licensed device in a wireless local area network (WLAN) comprises transmitting, to a second station, first frame including a first operating class field and a first channel number field, wherein the first operating class field indicates a number of an operating class of a first channel included in a first channel set for operating channel request and the first channel number field indicates a number of the first channel; and receiving, from the second station, second frame including a second operating class field and a second channel number field, wherein the second operating class field indicates a number of a operating class of a second channel included in a second channel set granted by the second station and the second channel number field indicates a number of the second channel. | 11-21-2013 |
20140044073 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention relates to a method for transmitting channel information in a wireless communication system. Disclosed is method for transmitting channel information, comprising the steps of: generating a frame which includes an operating class field and a channel number field; and transmitting the generated frame, wherein the channel number field indicates a number of a wireless local area network (WLAN) channel allocated according to available channel information. | 02-13-2014 |
20140045514 | CHANNELIZATION METHOD IN WHITESPACE BAND AND APPARATUS FOR THE SAME - A wireless communication system is disclosed. Specifically, a channelization method in a whitespace band and an apparatus for the same are disclosed. A method for providing whitespace operation information includes transmitting, by a first station (STA) to a second STA, a frame including a TV whitespace high throughput (TVHT) operation information field. The TVHT operation information field includes primary channel number, channel width, channel center frequency segment 0 and channel center frequency segment 1 subfields. A channel center frequency of frequency segment 0 or frequency segment 1 is determined based on a channel start frequency. The channel start frequency is determined as a function of a TV channel index corresponding to the frequency segment 0 or a TV channel index corresponding to the frequency segment 1. | 02-13-2014 |
20140126503 | METHOD FOR TRANSMITTING/RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - According to an embodiment of the present invention, a method of transmitting/receiving a signal of a device using a non-licensed band in a wireless communication system includes: receiving available channel information by a first type device; and determining a first channel for transmitting a signal from the first type device to a second type device, and a second channel for receiving a signal from the second type device, among the available channels. | 05-08-2014 |
20140146804 | METHOD AND DEVICE FOR OFFERING DATABASE ACCESS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a method and device for offering database access. According to one embodiment of the present invention, a method in which a first station (STA) accesses a database (DB) through a second STA includes the steps of: receiving a beacon or enabling signal in a first STA, operating as a dependent STA, from a second STA, operating as an enabling STA; operating a link setup of the second STA; and accessing the DB through a link with the second STA. | 05-29-2014 |
20140274106 | METHOD AND APPARATUS FOR DYNAMIC STATION ENABLEMENT PROCEDURE IN A WIRELESS LOCAL AREA NETWORK SYSTEM - A method of dynamic station enablement procedure in a wireless local area network (WLAN) is disclosed. A method of performing an enablement procedure by a first station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises receiving, from a second station, an enabling signal including advertisement protocol element with an advertisement protocol identification (ID) field which indicates an advertisement protocol the second station supports; and exchanging DSE (dynamic station enablement) related messages with the second station using a GAS (generic advertisement service) protocol. | 09-18-2014 |
20140307634 | Method and Apparatus of Converting TV Channels into WLAN Channels in a Wireless Local Area Network System - A method of converting TV channels into WLAN channels in a wireless local area network system (WLAN) is disclosed. A method of converting TV channels into WLAN channels at an apparatus comprising receiving WSM including a list of available TV channels and finding out a center frequency of each of first WLAN channels which exist on frequency area of the available TV channels using TV channel bandwidth, WLAN channel bandwidth and a starting frequency of each of the available | 10-16-2014 |
20140376474 | METHOD FOR SETTING OPERATING CHANNEL IN WHITE SPACE BAND AND DEVICE THEREFOR - Disclosed are a method for setting an operating channel in a white space band and a device therefor. Particularly, a method for enabling a first device to set an operating channel in a white space band comprises the steps of: acquiring information on an available TV channel from a geo-location database; and setting an operating channel on the basis of the information on the available TV channel, wherein a center frequency of the operating channel can be set differently according to a TV channel used by an incumbent device among TV channels adjacent to the TV channel on which the operating channel is set. | 12-25-2014 |
20150024798 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - A method of transmitting a White Space Map information in a wireless local area network system (WLAN) is disclosed. A method of transmitting a white space map information from a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises acquiring a first list of available channels at each location of a plurality of locations from a regulatory database; determining a second list of available channels at a white space zone (WSZ) using the first list of available channels at each location of a plurality of locations; and transmitting, to the second station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element, the WSM element including information of the WSZ and the second list of available channels, wherein the WSZ is a geographical area in which commonavailable channels are set. | 01-22-2015 |
20150036572 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING POWER SAVE-POLLING FRAME AND RESPONSE FRAME IN WIRELESS LAN SYSTEM - A method and apparatus for transmitting and receiving a power save-polling (PS-Poll) frame and response frame in a wireless LAN (WLAN) system are disclosed. The method for transmitting a frame by a station (STA) in a wireless LAN (WLAN) system includes awakening at a predetermined time, and transmitting a Power Save (PS)-Poll frame to an access point (AP); and receiving information in response to the PS-Poll frame from the access point (AP), wherein information indicating an access category (AC) of the PS-Poll frame is provided from the access point (AP) to the station (STA). | 02-05-2015 |
20150078309 | METHOD AND APPARATUS FOR A STATION TO OPERATE WITHIN WLAN SYSTEM - Methods and apparatuses for a specific station, operating as a non-AP (Access Point) station permitted to operate within available channels not used by a licensed device, to operate as an AP station in a Wireless Local Area Network (WLAN) are disclosed. A specific protocol related to a registration of a station's location to operate within a white space id defined whose Information IDs comprises a registration request and a registration response. Using the defined registration request and registration response, the station can register its geographical location with a Registered Location Server (RLS), and operate as an AP STA within WS. | 03-19-2015 |
Yong Ho Seok, Gyeongki-Do KR
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20110090890 | METHOD OF CHANNEL SCANNING IN WIRELESS LOCAL AREA NETWORK SYSTEM - A method and apparatus of scanning channels of a white space zone in a wireless local area network is provided. A response frame includes a white space map including information about whether each white space channel in the white space zone is occupied by an incumbent user. Channels of the white space zone are scanned based on the white space map. | 04-21-2011 |
20110305216 | METHOD OF CONTROLLING CHANNEL ACCESS - An embodiment of the present invention provides a method of controlling channel access in a WLAN system, comprising receiving, from an access point, a first channel access control message sent to stations located in some area through a directional antenna of the access point, and attempting to access a channel according to the first channel access control message. The method enables coexistence of several users and improves scalability of a wireless system. | 12-15-2011 |
20120120904 | Method and Apparatus of Scanning Channels in Wireless Local Area Network - A method and apparatus of scanning channels of a white space zone in a wireless local area network is provided. A beacon frame includes a white space map including information about whether each white space channel in the white space zone is occupied by an incumbent user. Channels of the white space zone are scanned based on the white space map. | 05-17-2012 |
20130303229 | Method and Apparatus of Transmit Power Control in Wireless Local Area Network - A method and apparatus of controlling a transmit power in a wireless local area network is provided. A wireless device operated in a TV White Space transmits a white space map indicating a list of available channels, and transmits an extended power constraint indicating a plurality of transmission channels and a plurality of maximum transmit powers, wherein the plurality of transmission channels are selected among the list of available channels and each of the plurality of maximum transmit powers corresponds to a maximum transmit power for each of the plurality of transmission channels. Interference can be mitigated between wireless devices operated in the TV White Space. | 11-14-2013 |
20130343341 | METHOD AND APPARATUS OF REQUESTING CHANNEL ACCESS IN WIRELESS LOCAL AREA NETWORK - A method and apparatus of requesting a channel access in a wireless local area network is provided. A transmitter transmits a plurality of Request To Send (RTS) frames over a plurality of requesting channels and receives at least one Clear To Send (CTS) frame over at least one responding channel as a response for the plurality of RTS frames. Each of the plurality of RTS frames indicates a bandwidth for the plurality of requesting channels, and the at least one CTS frame indicates a bandwidth for the at least one responding channel. | 12-26-2013 |
Yong Ho Seok, Anyang-Shi KR
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20120218983 | METHOD AND APPARATUS FOR TRANSMITTING DATA FRAME IN WLAN SYSTEM - A method of transmitting a data frame in a wireless local area network is provided. The method includes TXOP the step of: obtaining a transmission opportunity (TXOP) indicating a time interval during which a transmitter has a right to transmit at least one data frame and an available bandwidth for the TXOP and sequentially transmitting a plurality of data frames to at least one receiver during the TXOP, wherein a bandwidth of a subsequent data frame of the plurality of data frames is same to or narrower than a bandwidth of a preceding data frame of the plurality of data frames which is last previously transmitted before the subsequent data frame. | 08-30-2012 |
Yong Ho Seok, Anyang-Si Gyeonggi-Do KR
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20140064231 | LAYERED CHANNEL ACCESS METHOD AND APPARATUS IN WIRELESS LOCAL AREA NETWORK SYSTEM - A layered channel access method of a Group Representative-station (GR-STA) in a Wireless Local Area Network (WLAN) system is provided. The method includes receiving a management, including setting information indicative of a first phase and a second phase frame, from an Access Point (AP), receiving a first radio frame from the AP or accessing a channel and sending a second radio frame to the AP during the first phase indicated by the setting information, and receiving a third radio frame from an affiliated STA of a group to which the GR-STA belongs or accessing a channel and sending a fourth radio frame to at least one STA of the group to which the GR-STA belongs during the second phase indicated by the setting information. | 03-06-2014 |
Yong Ho Seok, Gyeonggi-Do KR
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20110188429 | POWER MANAGEMENT IN TUNNELED DIRECT LINK SETUP - A method and apparatus of managing power save in a wireless network is provided. A direct link with a peer station (STA) is established by exchanging a Tunneled Direct Link Setup (TDLS) setup request frame and a TDLS setup response frame through a access point (AP). The peer STA enters power save mode (PSM). Traffic data that are destined for the peer STA in the PSM are buffered and a peer traffic indication (PTI) frame is transmitted to the peer STA in the PSM. The PTI frame includes a traffic identifier (TID) field and a sequence control field. Unnecessary allocation of service period can be prevented. | 08-04-2011 |
20120106531 | METHOD AND APPARATUS FOR INDICATING DESTINATION STATIONS IN WLAN SYSTEM SUPPORTING MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT - A method of indicating destination stations, performed by an access point (AP), in a wireless local area network (WLAN) system supporting multi-user multiple input multiple output (MU-MIMO) is provided. The method includes transmitting a sounding request frame to the plurality of destination stations to transmit a sounding frame used for channel estimation between the AP and each destination station, receiving the sounding frame in response to the sounding frame request from each station, and transmitting a first data frame spatially multiplexed with respect to the plurality of destination stations by performing channel estimation on the basis of the sounding frame, wherein the sounding request frame comprises a group identifier (ID) indicating the plurality of destination stations. | 05-03-2012 |
20120165056 | METHOD AND APPARATUS FOR ACQUIRING AVAILABLE CHANNEL INFORMATION IN A WIRELESS LOCAL AREA NETWORK SYSTEM - Methods and apparatuses for acquiring/providing available channel information using Generic Advertisement Service (GAS) protocol in a wireless local area network (WLAN) are disclosed. AP (Access Point) station has a capability to acquire information for available channels from a database using a specific protocol related to an operation within the White Space (e.g. Access Network Query Protocol (ANQP)). And, non-AP station can retrieve the information for available channels by transmitting a Generic Advertisement Service (GAS) initial request frame to the AP station, wherein the GAS initial request frame comprises an Advertisement Protocol Element whose element ID indicates the specific protocol, and receiving a GAS initial response frame comprising a White Space Map (WSM) the specific protocol. The WSM comprises one or more white space channel units, and each of the white space channel units comprises a channel number field indicating one of the available channels and a power constraint field indicating a maximum allowable power on the indicated channel. | 06-28-2012 |
20120307685 | Method and Apparatus of Active Scanning in Wireless Local Area Network - Disclosed are a method and apparatus for active scanning of a station in a wireless local area network (WLAN), the method for active scanning in a wireless local area network (WLAN), the method including: receiving a probe request frame including probe request relaying information from a probe requesting station (STA) initiating the active scanning; determining whether to relay the the probe request frame; and relaying the probe request frame to an access point (AP) if it is determined to relay the probe request frame, the probe request relaying information including a transmitter address field that indicates an address of an STA transmitting the probe request frame, and a probe requesting STA address field that indicates an address of the probe requesting STA. With this imbalance between scanning coverage and service coverage in a TV WS is solved to thereby more efficiently perform scanning. | 12-06-2012 |
20130142132 | Method and Apparatus for Receiving Available Channel Information in a Wireless LAN System - The present invention relates to a method and apparatus for receiving available channel information in a wireless LAN system. According to one aspect of the present invention, in a method in which a first station (STA) receives available channel information in a wireless LAN system, wherein the first station operates as an unlicensed device that is allowed to operate in an available channel not used by a licensed device in a white space band, the first station receives, from a second station, a frame including an operating class field, a channel number field and a maximum transmission power field, and operates in the channel indicated by the operating class field and the channel number field, wherein said operating class field and said channel number field indicate the available channel which can be used by the unlicensed device, and said maximum transmission power field indicates the maximum transmission power permitted in the available channel. | 06-06-2013 |
20130201928 | Method and Apparatus for Receiving Available Channel Information in a Wireless Lan System - The present invention relates to a method and apparatus for receiving a white space map in a wireless LAN system. According to one aspect of the present invention, in a method in which a first station (STA) receives a white space map in a wireless LAN system, wherein the first station operates as an unlicensed device that is allowed to operate in an available channel not used by a licensed device in a white space band, the first station receives, from a second station, a frame including the white space map which includes a black list and a first field for indicating that the white space map contains the black list, and operates in at least one channel from the rest of the channels in TVWS, excluding the channel contained in the black list, wherein the black list is a list of channels which cannot be used by the unlicensed device. | 08-08-2013 |
20130250833 | METHOD FOR POWER SAVE MODE OPERATION IN WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR THE SAME - A method for a power save mode operation in a wireless local area network (WLAN) system is provided. The method comprising determining a type of a receiving station (STA) indicator on the basis of the number of STAs which are associated with the AP and which intend to transmit buffered traffic; generating a traffic indicator map (TIM) element including information which indicates the receiving STA indicator and the type of the receiving STA indicator, transmitting the TIM element, receiving a poll frame for requesting data frame transmission from one STA among the STAs and transmitting the data frame to the STA. | 09-26-2013 |
20140087778 | METHOD AND APPARATUS FOR ACQUIRING AVAILABLE CHANNEL INFORMATION IN A WIRELESS LOCAL AREA NETWORK SYSTEM - Methods and apparatuses for acquiring/providing available channel information using Generic Advertisement Service (GAS) protocol in a wireless local area network (WLAN) are disclosed. AP (Access Point) station has a capability to acquire information for available channels from a database using a specific protocol related to an operation within the White Space (e.g. Access Network Query Protocol (ANQP)). And, non-AP station can retrieve the information for available channels by transmitting a Generic Advertisement Service (GAS) initial request frame to the AP station, wherein the GAS initial request frame comprises an Advertisement Protocol Element whose element ID indicates the specific protocol, and receiving a GAS initial response frame comprising a White Space Map (WSM) the specific protocol. The WSM comprises one or more white space channel units, and each of the white space channel units comprises a channel number field indicating one of the available channels and a power constraint field indicating a maximum allowable power on the indicated channel. | 03-27-2014 |
20140105133 | METHOD AND APPARATUS FOR PROTECTING A PRIMARY SERVICE IN WLAN SYSTEM - A method and an apparatus for protecting a primary service as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate are disclosed. For protecting a primary service by a station as an unlicensed device in a regulatory domain where a licensed device and the unlicensed device are permitted to operate, the unlicensed device acquires a list of identified available channels for the operation of the unlicensed device and maximum allowed transmission powers of the identified available channels from a regulatory domain database system; generates a white space map (WSM) comprising the list of identified available channels and the maximum allowed transmission powers of the identified available channels; updates the WSM when the station acquires information that a primary service signal is detected on a specific channel which is indicated as available in the WSM; and transmits the updated WSM to another station such that the another station moves to another channel if the another station is operating on the specific channel. | 04-17-2014 |
20140321379 | Method and Apparatus for Multi-Channel Operation in Wireless Local Area Network System - Disclosed are a method and apparatus for multi-channel operation, performed by an access point (AP), in a WLAN system, the method includes: transmitting channel assignment information to a plurality of stations (STAs), in which the channel assignment information is for assigning at least one of a first channel and a second channel to each of the plurality of STAs; transmitting channel activity information to the plurality of STAs, in which the channel activity information is for indicating an activity duration where the AP transmit or receive a frame through each of the first channel and the second channel; and transmitting or receiving a frame through the first channel or the second channel on the basis of the channel activity information. | 10-30-2014 |
20140321415 | METHOD AND APPARATUS FOR TRANSMITTING CHANNEL SWITCHING INFORMATION - Disclosed are a method and an apparatus for transmitting a channel switching information. A method for transmitting switching information of an operating channel may comprises the step of: receiving a candidate channel frame including channel switch candidate information through the operating channel, and preferentially scanning a candidate operation channel induced based on the channel switch candidate information if the operating channel is changed, wherein the candidate operation channel may be a channel having a possibility of being preferentially selected when the operating channel is changed to another channel. As a result, when an access point (AP) shifts the operating channel, the shifted channel can be quickly scanned and associated with AP. | 10-30-2014 |
20140348097 | METHOD FOR PERFORMING CHANNEL SOUNDING IN WIRELESS LAN SYSTEM AND APPARATUS FOR SUPPORTING SAME - The present invention relates to a method of performing channel sounding in a wireless LAN system. The method includes transmitting a Null Data Packet Announcement (NDPA) frame for providing notice of an NDP to be transmitted, and transmitting the NDP and receiving a feedback frame from a station (STA). The feedback frame includes channel state information created on the basis of the NDP. The NDP includes a signal field and at least one long training field (LTF) for a multiple input multiple output channel. The signal field includes a repetitive instruction subfield. The repetitive instruction subfield provides instruction on whether orthogonal frequency division multiplexing (OFDM) symbol repetition is applied to the at least one LTF. | 11-27-2014 |
Yong-Ho Seok, Anyang KR
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20120128043 | APPARATUS AND METHOD FOR DETERMINATION OF FRAME STRUCTURE FOR REDUCING INTERFERENCE IN FREQUENCY REUSE SYSTEM USING COGNITIVE RADIO - Disclosed are an apparatus and method for determining a frame structure for reducing interference between users using the same frequency band in a communication system using a cognitive radio, the method including, collecting channel status information related to a primary user with a priority to occupancy of a predetermined frequency band, executing spectrum sensing for the frequency band to check whether the primary user's traffic exists, deciding a length of a data frame to be transmitted in consideration of interference to the primary user based upon the collected channel status information if a channel in which the primary user's traffic is not present is sensed through the spectrum sensing, constructing a data frame based upon the decided frame length to transmit via the sensed channel, and re-executing the spectrum sensing for the channel, if data to be additionally transmitted exists, and rechecking whether the primary user's traffic is present. | 05-24-2012 |
Yoon Yang Seok, Gyeonggi-Do KR
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20090106384 | AGENT PLATFORM, MULTI AGENT SYSTEM, AND MESSAGE TRANSMITTING/RECEIVING METHOD THEREOF - Provided are an agent platform, a multi agent system, and a message transmitting/receiving method thereof. The message transmitting/receiving method for a multi agent platform including a first agent platform for managing at least one of a first agent and a second agent and at least one of a second agent platform for managing at least one of a third agent, includes: receiving a plurality of messages from the first agent at the first agent platform; assigning a priority to the received message according to a message type of the message at the first agent platform; and transmitting the message to the second agent or the second agent platform according to the priority. | 04-23-2009 |
Young Ho Seok, Anyang-Si KR
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20130250832 | METHOD FOR MANAGING POWER SAVE MODE IN WIRELESS LAN SYSTEM, AND DEVICE FOR SUPPORTING SAME - Provided is a method for operating a power save mode performed by an access point in a WLAN system. The method includes: transmitting, by an access point (AP), a first traffic indication map (TIM) broadcast indication frame to a first station (STA); transmitting, by the AP, a second TIM broadcast indication frame to a second STA; transmitting, by the AP, a first TIM frame indicating that buffered traffic to the first STA is present; and transmitting, by the AP, a second TIM frame indicating that buffered traffic to the second STA is present. The first TIM broadcast indication frame includes a first TIM offset field indicating a transmission time of the first TIM frame, and the second TIM broadcast indication frame includes a second TIM offset field indicating a transmission time of the second TIM frame. | 09-26-2013 |