| Patent application number | Description | Published |
|---|
| 20080217639 | Photonic crystal light emitting device using photon-recycling - A photonic crystal light emitting device including: a light emitting diode (LED) light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer interposed between the first and second conductive semiconductor layers; and a first photon-recycling light emitting layer formed on one surface of the first conductive semiconductor layer, opposite to the active layer, wherein the first photon-recycling light emitting layer absorbs a primary light emitted from the LED light emitting structure and emits a light having a different wavelength from that of the primary light, and a photonic crystal structure is formed on an entire thickness of the first photon-recycling light emitting layer. | 09-11-2008 |
| 20080298491 | Apparatus and method for detecting signal based on QR-decomposition in multiple input multiple output wireless communication system - An apparatus and a method are provided for detecting N number of TX signals in a MIMO wireless communication system. The apparatus includes an RF processor, a channel estimator, and a signal detector. The RF processor converts signals, received through multiple antennas, into baseband signals. The channel estimator estimates channel information of the respective antennas by using the received signals. The signal detector arranges the baseband signals of the respective antennas on the basis of the channel information, calculates a threshold value of each stage, and selects symbols with a cumulative metric smaller than or equal to the threshold value as candidates at each stage, to detect a TX signal vector with N number of symbols. | 12-04-2008 |
| 20090011307 | Electrode-Electrolyte Composite Powders For a Fuel Cell And Method For The Preparation Thereof - The present invention provides electrode-electrolyte composite particles for a fuel cell, which have either electrode material particles uniformly dispersed around electrolyte material particles or electrolyte material particles uniformly dispersed around electrode material particles, to enhance the electrode performance characteristics and electrode/electrolyte bonding force, as well as thermal, mechanical and electrochemical properties of the fuel cell, in a simple method without using expensive starting materials and a high temperature process. | 01-08-2009 |
| 20090028265 | Apparatus and method for detecting signal by maximum likelihood - An apparatus and method for detecting a signal in a receiver by maximum likelihood (ML) are provided, in which symbols are detected according to the number of transmit antennas of a transmitter and a modulation scheme, channels are estimated, an equivalent channel matrix corresponding to the estimated channels is determined, a permuted equivalent channel matrix is determined by multiplying the equivalent channel matrix by a predetermined permutation matrix, the permuted equivalent channel matrix is QR decomposed, a hard decision is performed on predetermined symbols among the detected symbols using a received signal resulting from the QR decomposition, and the log likelihood ratios (LLRs) of the hard-decided symbols are determined. | 01-29-2009 |
| 20090039293 | Apparatus for forming nano pattern and method for forming the nano pattern using the same - The present invention relates to an apparatus for forming a nano pattern capable of fabricating the uniform nano pattern at a low cost including a laser for generating a beam; a beam splitter for splitting the beam from the laser into two beams with the same intensity; variable mirrors for reflecting the two beams split by the beam splitter to a substrate; beam expansion units for expanding diameters of the beams by being positioned on paths of the two beams traveling toward the substrate; and a beam blocking unit, installed on an upper part of the substrate, transmitting only a specific region expanded through the beam expansion unit and blocking regions a remaining region, and a method for forming the nano pattern using the same. | 02-12-2009 |
| 20090086840 | Apparatus and method for transmitting feedback information in communication system - Disclosed is a system and method for transmitting feedback information in a communication system. A receiver calculates a minimum distance of each two symbol vectors among all symbol vectors which can be received through a k | 04-02-2009 |
| 20090147890 | Apparatus and method for canceling interference in multi-antenna system - An apparatus and a method for canceling interference based on Maximum Likelihood (ML) at a receiver of a multi-antenna system are provided. The method includes estimating a channel using a signal received over one or more receiver antennas; generating one or more weights using the estimated channel to cancel interference; detecting a candidate symbol having the shortest Euclidean distance through Maximum Likelihood using a first weight; and soft-decoding the candidate symbol using a second weight. Therefore, by receiving the signal based on the ML under the interference, the system capacity can be increased and the reception performance can be enhanced. | 06-11-2009 |
| 20090156214 | Preamble design method for reducing overhead during handover in hierarchical cellular system - Provided is a handover method of a wireless communication system using a hierarchical cellular scheme. In the method, signal quality of a serving node is measured, so that whether to start scanning for a handover is determined. When the scanning for the handover starts, signal qualities of a serving cell including the serving node and one or more neighbor cells are measured through a first preamble including a first identifier for distinguishing a cell. An intra-cell handover or an inter-cell handover is selected using the signal qualities of the serving cell and the neighbor cells. Therefore, a terminal can easily distinguish between the inter-cell handover and the intra-cell handover, and an overhead during a handover can be reduced because an intra-cell handover procedure is simplified. | 06-18-2009 |
| 20090181278 | MICRO FUEL CELL, FABRICATION METHOD THEREOF, AND MICRO FUEL CELL STACK USING THE SAME - A micro cell fuel cell using a nano porous structure according to a thin film process and an anodizing process as a template for implementing a porous structure of an electrode, its fabrication method, and a micro fuel cell stack using the same are disclosed. The micro-fuel cell includes a solid electrolyte and first and second electrodes separately formed on the electrolyte, wherein at least one of the first and second electrodes is supported by a template having a plurality of nano pores formed by depositing, anodizing and etching a thin film, and is a porous electrode with nano pores formed at positions corresponding to the entirety or a portion of the plurality of nano pores formed on the template. The micro-fuel cell can be fabricated based on the thin film process, and unit cells can be highly integrated to implement a micro-fuel cell system generating a high voltage and a high current. | 07-16-2009 |
| 20090252246 | Receiving apparatus and method for maximum likelihood in a single carrier system - A receiving apparatus and method of a Maximum Likelihood (ML) scheme in a Single-Carrier (SC) system are provided. The apparatus includes at least two antennas, at least two Orthogonal Frequency Division Multiplexing (OFDM) demodulators, at least two subcarrier mappers, at least two OFDM modulators, and a detector. The antennas receive signals. The OFDM demodulators convert the signals into frequency domain signals. The subcarrier mappers confirm signals mapped to frequency domain subcarriers. The OFDM modulators convert the signals into time domain signals. The detector constructs at least one set for candidate transmission symbols and detects receive signals through ML detection using the set. | 10-08-2009 |
| 20090262871 | Receiver and method for detecting signal in multiple antenna system - Provided are a receiver and a method for detecting a signal in a multiple antenna system. The receiver includes a filter coefficient calculator and a signal detector. After separating a first signal portion and a second signal portion, the filter coefficient calculator calculates an MMSE filter coefficient using a Matrix Inversion Lemma such that an inverse matrix of the first signal portion has a predetermined constant value regardless of a repetition signal detection process. The signal detector detects a relevant transmission signal from an interference-removed reception signal using the MMSE filter coefficient. | 10-22-2009 |
| 20090286494 | Iterative tree search-based precoding technique for multiuser mimo communication system - An iterative tree search-based preceding method for a multi-user Multi-Input Multi-Output (MIMO) communication system includes determining a reference value of a cumulative branch metric of a candidate symbol, eliminating candidates having values that exceed the determined reference value of the cumulative branch metric of the candidate symbol, and registering values, which do not exceed the determined reference value of the cumulative branch metric of the candidate symbol, as entries, and selecting the least value from the values registered as the entries. Thereby, the method has low complexity and similar performance compared to an existing Sphere Encoding (SE) technique. | 11-19-2009 |
| 20090296627 | APPARATUS AND METHOD FOR SELECTING RELAY STATION MODE IN WIRELESS COMMUNICATION SYSTEM - Method and apparatus for selecting an RS mode in a BWA communication system are provided. In a method for a BS to select an RS mode in a BWA communication system, bidding prices are received from a set of RSs covered by the BS. The winner RS of at least one or more auctions is determined on the basis of the bidding values and the interference information of the RS set. The winner RS is set to operate in an active mode. | 12-03-2009 |
| 20090322714 | METHOD AND APPARATUS FOR MULTISCREEN MANAGEMENT FOR MULTIPLE SCREEN CONFIGURATION - The present invention performs multiscreen configuration and multiscreen management by using a plurality of screens and a plurality of methods in order to represent a plurality of service contents. In accordance with a multiscreen configuration method of the present invention, by mutually assigning one or more broadcasting services, one or more logical screens, one or more display screens, and one or more output ports, ultimately outputting service contents which are executed on screens assigned by output ports, and setting, changing, and reporting configuration of a multiscreen, the configuration of the multiscreen may be set or reset so as to effectively output various service contents on the multiscreen by using a desired method. | 12-31-2009 |
| 20100006415 | Thermal Decomposition Treatment System of Flammable Waste and Method for Treating the Waste Using the System - The present invention relates to a system for treating flammable wastes and a method for treating the same, and more particularly, to a thermal decomposition treatment system of the flammable waste and a waste treatment method of the waste using the same through which the flammable waste inputted into a trash burner is shielded from air or gas and the waste is thermally decomposed and carbonated through a indirect heating by a heating tube for combustible gas to be extracted and recovered for a reuse without emitting contaminated gas, etc. The thermal decomposition treatment system according to the present invention includes a trash burner including a thermal decomposition chamber, a combustion chamber, and a cooling water chamber; a water vapor generator which is communicated to the thermal decomposition chamber through the water vapor supply tube and into which over heated water vapor is forced to be inputted; a cooling unit which is communicated to the cooling water chamber through a cooling water input tube and a cooling water discharging tube, and the cooling water is provided and circulated through this configuration; a purifier which is communicated to the thermal decomposition chamber through the gas discharging tube, and poisonous gases contained in rare gases and combustible gas are removed through this configuration; a combustible gas storage reservoir which is communicated to the purifier through a gas transfer tube and stores the purified combustible gas, and allows some of it to be inputted into the combustion chamber through a gas circulation tube; and a cooling tower which is communicated to a waste heat recovery tube connected to the heating tube and which collects high temperature air passed therethrough, and allows the high temperature air to be cooled and discharged to atmosphere. | 01-14-2010 |
| 20100023935 | APPARATUS, SYSTEM AND METHOD FOR SOFTWARE UPGRADE - An apparatus, system and method for software upgrade are provided. The software upgrading system includes a broadcast transmitting device which transmits a digital broadcasting signal; a broadcast receiving device which receives the digital broadcasting signal, extracts upgrade information that relates to acquiring an upgrade image for upgrading software from the digital broadcasting signal which is received, and requests the upgrade image based on the upgrade information which is extracted; and an upgrade image storage device which transmits the upgrade image according to the upgrade image request. The broadcast receiving device upgrades the software by receiving the upgrade image from the upgrade image storage device. | 01-28-2010 |
| 20100038698 | HIGH DENSITY FLASH MEMORY DEVICE , CELL STRING FABRICATING METHOD THEREOF - A flash memory cell string and a method of fabricating the same are provided. The flash memory cell string includes a plurality of cell devices and switching devices connected to ends of the cell devices. Each of the cell devices includes a semiconductor substrate, a tunneling insulating layer, a charge storage node, a control insulating layer, and a control electrode which are sequentially laminated on the semiconductor substrate. In each cell device, a source/drain region is not formed. The switching device does not include a source or drain region in a side connected to the cell devices. The switching device includes a source or drain region in the other side that is not connected to the cell devices. The source or drain region does or does not overlap the control electrode. Accordingly, it is possible to improve a miniaturization property and performance of NAND flash memory cell devices. If necessary, it is possible to electrically connect cells or cell strings by inducing an inversion layer through a fringing electric field from a control electrode. | 02-18-2010 |
| 20100046655 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING IN A MULTI-ANTENNA SYSTEM - Apparatuses and methods for transmitting and receiving in a multi-antenna system are provided. A receiver for reducing a quantization error of channel information feedback in a multi-antenna system includes a restore vector generator for selecting a codeword c | 02-25-2010 |
| 20100052043 | HIGH DENSITY FLASH MEMORY DEVICE AND FABRICATING METHOD THEREOF - The present invention provides a flash memory device having a high degree of integration and high performance. The flash memory device has a double/triple gate structure where a channel is formed in a wall-shaped body. The flash memory device has no source/drain regions. In addition, although the flash memory device has the source/drain regions, the source/drain region are formed not to be overlapped with a control electrode. Accordingly, an inversion layer is induced by a fringing field generated from the control electrode, so that cell devices can be electrically connected to each other. The flash memory device includes a charge storage node for storing charges formed under the control electrode, so that miniaturization characteristics of cell device can be improved. According to the present invention, there is proposed a new device capable of improving the miniaturization characteristics of a MOS-based flash memory device and increasing memory capacity. | 03-04-2010 |
| 20100092832 | METHOD FOR PREPARING METAL OXIDE SOL, METHOD FOR PREPARING METAL OXIDE THIN FILM USING SAID SOL, AND SOLID OXIDE FUEL CELL COMPRISING SAID THIN FILM - A metal oxide thin film structure for a solid oxide fuel cell, prepared by a method comprising dispersing a metal oxide nanopowder in a metal oxide salt solution and subsequent coating of the resulting metal oxide powder dispersed sol and the metal oxide salt solution on a porous substrate, has excellent gas impermeability, excellent phase stability, and is devoid of cracks or pinholes. | 04-15-2010 |
| 20100207180 | HIGH-PERFORMANCE ONE-TRANSISTOR FLOATING-BODY DRAM CELL DEVICE - Provided is a one-transistor (1T) floating-body DRAM cell device including a substrate; a gate stack which is formed on the substrate; a control electrode which is disposed on the substrate and of which some or entire portion is surrounded by the gate stack; a semiconductor layer which is formed on the gate stack; a source and a drain which are formed in the surface of the semiconductor layer and of which lower surfaces are not in contact with the gate stack; a gate insulating layer which is formed on the semiconductor layer; and a gate electrode which is formed on the gate insulating layer, wherein the remaining portion of the semiconductor layer excluding the source and the drain is configured as a floating body. The miniaturization characteristic and performance of a MOS-based DRAM cell device can be improved, and a memory capacity can be increased. | 08-19-2010 |
| 20100210469 | MICROARRAY CHIP AND METHOD FOR DETECTION OF CHROMOSOMAL ABNORMALITY - The present invention relates to techniques to detect chromosomal columns abnormalities. More specifically, the present invention is directed to a microarray chip for detecting chromosomal abnormalities comprising one or more pooled probe sets, wherein the pooled probe set is specific to a chromosomal abnormality and all probes of each pooled probe set are immobilized together in at least one spot; a method of detecting chromosomal abnormalities using the microarray chip; a kit for diagnosing diseases associated with chromosomal abnormalities comprising the microarray chip; and a method of diagnosing a disease associated with a chromosomal abnormality by identifying the chromosomal abnormality specific to the disease using the microarray chip. The present invention relates to techniques to detect chromosomal abnormalities. More specifically, the present invention is directed to a microarray chip for detecting chromosomal abnormalities comprising one or more pooled probe sets, wherein the pooled probe set is specific to a chromosomal abnormality and all probes of each pooled probe set are immobilized together in at least one spot; a method of detecting chromosomal abnormalities using the microarray chip; a kit for diagnosing diseases associated with chromosomal abnormalities comprising the microarray chip; and a method of diagnosing a disease associated with a chromosomal abnormality by identifying the chromosomal abnormality specific to the disease using the microarray chip. | 08-19-2010 |
| 20100285394 | HYBRID SEALING COMPOSITE FOR FLAT SOLID OXIDE FUEL CELL STACK - The present invention provides a hybrid composite sealant, as a sealing material for a planar type solid oxide fuel cell stack, having a matrix of a glass composition, wherein a surface layer reinforced with platelet reinforcement particles is laminated on either one or both surfaces of an inner layer reinforced with fibrous reinforcement particles. Accordingly, by applying the composite sealant of the present invention to the solid oxide fuel cell stack, excellent gas-tightness of the stack can be obtained even under low coupling pressure, thermal cycling durability can be enhanced due to low coupling strength with a contact surface of an object to be sealed, stack disassembly and maintenance can be facilitated when parts within the stack are disabled, and stack stability as well as stack performance can be maintained under a pressurized operation condition where pressure differentials between the inside and outside of the stack reach to 5 atmospheric pressures (0.5 MPa). | 11-11-2010 |
| 20100331165 | SEALING COMPOSITE FOR FLAT SOLID OXIDE FUEL CELL STACK HAVING HIGH FRACTURE RESISTANCE AND THE FABRICATION METHOD THEREOF - A composite sealant of the present invention increases a fracture toughness of glass which has an excellent gas tightness but has a low fracture resistance, to enhance the thermal cycle stability while maintaining the gas tightness of a stack. For this, alpha-alumina fiber particles, alpha-alumina granular particles, and metallic particles are mixed and added to a glass matrix for remarkably increasing the fracture toughness from 0.5 MPa·m05 to 6 MPa·m°'5 through the multiple effects of crack deflection and crack bridging by the fiber and granular particles, and effects of crack arresting and plastic deformation by the metallic particles. When using the high fracture toughness composite sealant of the present invention, since the gas tightness and the stability of the stack can be maintained even when there is a thermal stress produced by a non-uniform temperature distribution or a thermal cycle condition in the stack, increasing the fracture toughness of the composite sealant works as the most important factor for enhancing the reliability of a large-area stack. | 12-30-2010 |
| 20110121396 | PILLAR-TYPE FIELD EFFECT TRANSISTOR HAVING LOW LEAKAGE CURRENT - A pillar-type field effect transistor having low leakage current is provided. The pillar-type field effect transistor includes: a semiconductor body, source and drain formed in a semiconductor pillar; a gate insulating layer formed on a surface of the semiconductor body; a gate electrode formed on a surface of the gate insulating layer. The gate electrode includes a first gate electrode and a second gate electrode being electrically connected with the first gate electrode. The first gate electrode has a work function higher than that of the second gate electrode. Accordingly, the gate induced drain leakage (GIDL) can be reduced, so that an off-state leakage current can be greatly reduced. | 05-26-2011 |
