Patent application number | Description | Published |
20080227296 | SLURRY COMPOSITIONS, METHODS OF PREPARING SLURRY COMPOSITIONS, AND METHODS OF POLISHING AN OBJECT USING SLURRY COMPOSITIONS - A slurry composition includes an acidic aqueous solution and one or both of, an amphoteric surfactant and a glycol compound. Examples of the amphoteric surfactant include a betaine compound and an amino acid compound, and examples of the amino acid compound include lysine, proline and arginine. Examples of the glycol compound include diethylene glycol, ethylene glycol and polyethylene glycol. | 09-18-2008 |
20100008381 | APPARATUS FOR REPORTING RECEPTION RESULT OF PACKETS IN MOBILE COMMUNICATION SYSTEM - Disclosed is a receiver for configuring a Block Acknowledgement (BA) frame in a wireless communication system for acknowledgement of a data transmission from a transmitter. The receiver receives a Block Acknowledgement Request (BAR) frame in the data transmission from the transmitter and determines an overall size of a bitmap for the BA frame from the BAR frame to acknowledge the data transmission. The receiver configures the BA frame of the response to include the bitmap having the determined overall size, and transmits the configured BA frame to the transmitter. The bitmap of the BA frame includes bits representing reception results of packets of the data transmission received from the transmitter. | 01-14-2010 |
20100187207 | LASER PROCESSING APPARATUS AND METHOD USING BEAM SPLIT - Disclosed are a laser processing apparatus and method that can effectively remove a low-k material formed on a wafer. A laser processing apparatus of the invention is a laser processing apparatus that processes a subject on which a low-k material is formed. The laser processing apparatus includes a laser generating unit that emits a laser beam; and an optical system that splits the laser beam emitted from the laser generating unit into two and irradiates the split laser beams onto the subject In this case, the optical system includes a pair of condensing lenses in which cut surfaces that are cut at a predetermined distance from central axes to be parallel to the central axes contact with each other, and the interval between the two split laser beams is the same as the interval between two edges of the low-k material in a removal subject region. According to the invention, after splitting a laser beam into two laser beams and primarily removing the edges of the low-k material in the removal subject region using the laser beams, the remaining low-k material between the edges is removed. As a result, it is possible to improve processing quality. | 07-29-2010 |
20100208618 | METHOD FOR DETECTING HIDDEN STATION IN A WIRELESS COMMUNICATION NETWORK AND SYSTEM THEREFOR - Disclosed is a method for detecting a hidden station in a specific station constituting a wireless communication network that includes receiving a frame after a lapse of an idle state interval longer than a predetermined waiting time; determining that there is a hidden station, if a size of the received frame is equal to a size of an Acknowledge (ACK) frame; and determining that there is no hidden station, if the size of the received frame is not equal to the size of the ACK frame. | 08-19-2010 |
20100309882 | HANDOVER METHOD FOR MOBILE WIRELESS NETWORK - Provided is a handover method for a mobile wireless network. The handover method for a mobile wireless network, including: receiving, by a mobile node, information on a new access router by requesting the information necessary for the handover from a previous access router in accordance with a handover initiation; sending a fast binding update message to the previous access router via the new access router by connecting to the new access router; receiving a packet from the new access router; and disconnecting from the previous access router. | 12-09-2010 |
20110026482 | METHOD AND APPARATUS FOR PILOT SIGNAL TRANSMISSION - A method and apparatus for pilot signal transmission is disclosed, which is capable of improving efficiency in a wireless communication system, the method comprising transmitting an uplink transmission frame for a first sector or cell by a mobile station through the use of basic pilot pattern in a resource block and transmitting an uplink transmission frame for a second sector or cell by the mobile station through the use of shift pilot pattern which is not overlapped with the basic pilot pattern in the resource block. | 02-03-2011 |
20110027996 | SLURRY COMPOSITION FOR A CHEMICAL MECHANICAL POLISHING PROCESS, METHOD OF POLISHING AN OBJECT LAYER AND METHOD OF MANUFACTURING A SEMICONDUCTOR MEMORY DEVICE USING THE SLURRY COMPOSITION - A slurry composition for a chemical mechanical processing process includes about 0.05 to about 0.3 percent by weight of a ceria abrasive, about 0.005 to about 0.04 percent by weight of an anionic surfactant, about 0.0005 to about 0.003 percent by weight of a polyoxyethylene-based nonionic surfactant, about 0.2 to about 1.0 percent by weight of a salt of polyacrylic acid having an average molecular weight substantially greater than a molecular weight of the anionic surfactant, and a remainder of water. In addition, a method of polishing an object layer and a method of manufacturing a semiconductor device using the slurry composition are also provided. | 02-03-2011 |
20110134859 | FRAME TRANSMISSION METHOD USING PRECODING FOR SUPPORTING MU-MIMO, AND BASE STATION SUPPORTING THE FRAME TRANSMISSION METHOD - Disclosed is a frame transmission method using precoding for supporting MU-MIMO, which facilitates to reduce overhead of a downlink frame in a wireless communication system of FDD method, and a base station supporting that method. The frame transmission method comprises calculating a precoding matrix of a present frame based on channel state information (CSI) of each mobile station and a precoding matrix of a prior frame; precoding a dedicated pilot and downlink data to be transmitted to the mobile station by the use of precoding matrix of the present frame; and transmitting a downlink frame including the precoded dedicated pilot and precoded downlink data to the corresponding mobile station. | 06-09-2011 |
20110164565 | METHOD AND APPARATUS FOR ROUTING IN WIRELESS NETWORK - A method of routing a wireless network is provided. The method is performed by each of a group of nodes and includes: receiving a routing request signal; determining whether a node itself is a destination node, by referring to a traffic distribution table showing traffic throughput of the group of nodes and an intermediate-node weight table showing weights of intermediate nodes on all paths between the group of nodes and a source node, wherein a route path is selected by referring to the weights of intermediate nodes; and when it is determined that the node itself is the destination node transmitting a routing response signal to the source node that has transmitted the routing request signal, and receiving a packet from the source node, wherein the transmitting and receiving are performed by the determined destination node. By using the method, traffic in wireless network extreme communications can be distributed at intermediate nodes as well as at destination nodes. Therefore, all the networks can be effectively used in extreme circumstances. | 07-07-2011 |
20130040448 | METHODS OF FORMING METAL OR METAL NITRIDE PATTERNS AND METHODS OF MANUFACTURING SEMICONDUCTOR DEVICES - In a method of forming a metal or metal nitride pattern, a metal or metal nitride layer is formed on a substrate, and a photoresist pattern is formed on the metal or metal nitride layer. An over-coating composition is coated on the metal or metal nitride layer and on the photoresist pattern to form a capping layer on the photoresist pattern. The over-coating composition includes a polymer having amine groups as a side chain or a branch and a solvent. A remaining portion of the over-coating composition is removed by washing with a hydrophilic solution. The metal or metal nitride layer is partially removed using the capping layer and the photoresist pattern as an etching mask. | 02-14-2013 |
20130089986 | METHOD OF FORMING PATTERNS OF SEMICONDUCTOR DEVICE - A method of forming patterns of a semiconductor device may include forming a photoresist layer that includes a photo acid generator (PAG) and a photo base generator (PBG), generating an acid from the PAG in a first exposed portion of the photoresist layer by first-exposing the photoresist layer, and generating a base from the PBG in a second exposed portion of the photoresist layer by second-exposing a part of the first exposed portion and neutralizing the acid. The method may also include baking the photoresist layer after the first and second-exposing and deblocking the photoresist layer of the first exposed portion in which the acid is generated to form a deblocked photoresist layer, and forming a photoresist pattern by removing the deblocked photoresist layer by using a developer. | 04-11-2013 |
20130209894 | ORGANIC ELECTROLYTE FOR MAGNESIUM BATTERIES AND MAGNESIUM BATTERY USING THE ORGANIC ELECTROLYTE - An organic electrolyte for magnesium batteries including an ether solvent; a magnesium compound represented by Formula 1 dissolved in the ether solvent; and a Lewis acid: | 08-15-2013 |
20130258119 | COMMUNICATION SYSTEM AND METHOD OF TRANSMITTING AND RECEIVING DATA IN COMMUNICATION SYSTEM - A communication system and a method of transmitting and/or receiving data in the communication system are provided. A method of transmitting media data of a camera to a user terminal in a communication environment in which the camera connected to a first network and the user terminal connected to a third network are connected to a second network includes: obtaining second address information of the second network that corresponds to first address information of the first network, from an address conversion apparatus; obtaining third address information of the second network from an address providing apparatus connected to the second network; transmitting the first through third address information to the user terminal through a session control server connected to the second network; and transmitting the media data to the user terminal based on at least one of the first through third address information. | 10-03-2013 |
20130341120 | SOUNDPROOF MATERIAL USING POLYURETHANE FOAM FROM CAR SEAT AND FABRICATION PROCESS THEREOF - Disclosed is a soundproof material fabricated using recycled polyurethane foam from waste seats and a process of fabricating the same, and more particularly, a soundproof material fabricated by stacking a thermoplastic polymer on a sound absorbing material including recycled polyurethane foam from seats from end-of-life vehicles and a process of fabricating the same. Use of recycled resources provides an eco-friendly impact, reduces manufacturing costs for parts, and allows for improved mechanical rigidity and sound insulating properties. The soundproof material may be applied to various automobile parts such as package trays, luggage coverings, covering shelves, and isolation pads. | 12-26-2013 |
20140014033 | ORGANIC SOLUTION SUPPLY NOZZLE AND COATING APPARATUS INCLUDING THE SAME - An organic solution coating apparatus is provided. The organic solution coating apparatus includes a rotary chuck having an upper surface on which a target is adsorbed and fixed, an organic solution supply nozzle configured to supply an organic solution to the target and having an inner surface having a contact angle with the organic solution of 90° or greater; and a nozzle standby unit in which the organic solution supply nozzle performs a preliminary spraying operation while the coating process is not performed, the nozzle standby unit including a nozzle standby hole having a surface having a contact angle with the organic solution of 90° or greater. | 01-16-2014 |
20140124834 | METHOD OF FABRICATING SEMICONDUCTOR DEVICE - A method of fabricating a semiconductor device is disclosed comprising the steps of: providing a substrate having a first region, a second region and a plurality of gate electrodes which are formed on the first and second regions of the substrate; forming a mask film to expose the first region of the substrate while covering the second region of the substrate, such that the mask film has a negative lateral profile at a boundary between the first and second regions of the substrate; forming sigma trenches in the first region of the substrate by etching the first region of the substrate using the mask film and the gate electrodes as a mask; and forming an epitaxial layer in each of the sigma trenches. | 05-08-2014 |