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Kwon, Daejeon-City
Dong-Seung Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080225975 | Structured Space-Time Code Achieving the Full Diversity and Full Rate and Generating Method Thereof, and Multi-Input Multi-Output System - A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot. | 09-18-2008 |
| 20080240217 | Cinr Estimating Method and Device Using Preamble in Ofdm - A device and method for estimating a carrier to interference-plus-noise ratio (CINR) in an OFDM system are provided. The CINR estimating method includes (a) receiving a preamble symbol and transmit subcarrier transmitted from a base station; (b) calculating an interference power and noise power using the preamble symbol and transmit subcarrier; (c) calculating a receive power used for the base station to transmit a preamble and data symbol; (d) estimating a preamble CINR value using an interference power, a noise power, and a receive power; (e) calculating the noise power from a subcarrier not transmitting a preamble; and (f) calculating an average CINR of data subcarriers using the preamble CINR value and the noise power. With such a method, a precise carrier to interference-plus-noise ratio (CINR) can be estimated using a preamble when the preamble power is amplified in comparison with the data symbol power, the subcarriers are differently applied for the respective cells, and the traffic of the data area is partially loading. | 10-02-2008 |
| 20080240276 | Multi-Input Multi-Output System For Enhancing Transmission Performance - The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter ( | 10-02-2008 |
| 20080313252 | Sphere Decoder and Decoding Method Thereof - A sphere decoder sets a Euclidean distance between a lattice vector obtained by using an MMSE or ZF estimate and a received signal as an initial radius, further reduces the initial radius, and searches lattices points included inside a hypersphere with the further reduced initial radius. In addition, one lattice vector having a minimum Euclidean distance is output. One dimension is selected to reduce an initial radius, and estimates in other dimensions are kept fixed, excluding the selected dimension. Then candidate lattice points are searched in the selected dimension, excluding a current estimate, such that a minimum Euclidean distance and a lattice point estimate corresponding to the minimum Euclidean distance are obtained. The initial radius is updated by the minimum Euclidean distance, and a final lattice vector is constructed by combining a lattice point estimate corresponding to the initial radius and the lattice point estimates in other dimensions. | 12-18-2008 |
| 20090067513 | Smart antenna system and method thereof for forming uplink eigenbeam of ofdm/tdd - A mobile station transmitting and receiving method and a corresponding mobile station transmitter and receiver of a smart antenna system for forming uplink eigenbeams of the OFDM/TDD (orthogonal frequency division multiplex/time division duplex), wherein OFDM symbols are received from a base station through a downlink via multiple antennas ( | 03-12-2009 |
| 20100215085 | DECODING METHOD FOR SPACE-TIME ENCODING TRANSMISSION SCHEME IN WITH MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM AND RECEIVING APPARATUS FOR USING THE METHOD - A receiver according to an exemplary embodiment of the present invention receives a transmitted signal, converts the signal to a predetermined symbol, and estimates channel information including a channel gain of a channel of the transmitted signal. In addition, the receiver generates an intermediate processing value for decoding the signal based on the estimated channel information and the symbol, and normalizes the intermediate processing value to the channel gain to generate a reference value. The generated reference value is used for a soft-decision value for decoding the signal. In addition, when the signal is decoded by using a hard-decision value, a constellation point value that is closest to the reference values is generated and set as the hard-decision value. | 08-26-2010 |
Eiyeon Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090080344 | Method for Configuring 1:N Overlay Multicast Network of Multicast Agent in Wireless LAN Environment and Multicast Agent Therefor - A method of configuring a multicast agent and a 1:N overlay multicast network considering a wireless local area network (WLAN) environment of the same are provided. The method includes: a session manger generating a first database with entries of multicast agents subscribing to a session and multicast agents that have applied for subscription to a session but have not been confirmed for normal operation; a multicast agent generating a second database with entries of a path from the root of a tree to which the multicast agent belongs, a hierarchical relation in the tree, the list of probed neighboring nodes, and a list of not-probed neighboring nodes; the multicast agent subscribing to the overlay network; obtaining information on neighboring multicast agents; setting a multicast agent which is determined to be optimal based on the obtained information, as a parent node; and if a multicast agent providing a tree improved from the current tree is found, changing the parent node. According to the method, multicast communication can be easily introduced into a wireless environment without particular modification of existing Internet router equipment. | 03-26-2009 |
Hyeokchan Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090150972 | APPARATUS AND METHOD FOR MANAGING P2P TRAFFIC - The invention relates to a P2P traffic management apparatus and method. A P2P flow agent monitors an executed application program to extract a P2P application program, adds application identifiers to packets generated by the application program according to a set policy, and transmits the packets. In this case, a P2P security gateway monitors the inflowing packets from the P2P flow agent to extract packets having the application identifiers, uses the extracted application identifiers to inquire and acquire a related policy, and controls the packets according to the acquired policy. | 06-11-2009 |
Hye Yeon Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090080391 | Network interworking system and method for negotiating qos in network interworking system - A 3GPP-WLAN interworking system to which WLAN user equipment is accessed includes a WLAN access network including a WLAN access point, a 3GPP packet-switched service network including terminal equipment, a 3GPP core network connecting the WLAN access network and the 3GPP packet-switched service network, and a packet data gateway relaying the 3GPP core network and the 3GPP packet-switched service network. The WLAN user equipment negotiates a QoS according to a wireless environment with the WLAN access point to generate a WLAN bearer, negotiates a QoS according to a type of user data with the packet data gateway to generate a WLAN 3GPP IP access bearer, and negotiates a QoS according to data process performance of the terminal equipment with the terminal equipment to generate an end-to-end bearer. | 03-26-2009 |
Jae-Kyu Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090251078 | Multi-functional traffic signal stick - Disclosed herein is a multi-functional traffic signal stick, which has a red signal LED part for providing a signal stick function and a white signal LED part for providing a flash light function, and which a police officer carries on the road. The multi-functional traffic signal stick can be carried conveniently as a flash light by telescoping each joint of a length-adjustable flashing tube manufactured in an antenna type into a larger tube, and used as a signal stick, which is well seen from a far distance, by stretching each joint of the length-adjustable flashing tube like an antenna. In addition, the present invention can serve to inform danger or accidents when being mounted uprightly on the road or a proper place such that three supporting rods mounted on a grip part at regular intervals are unfolded to support the signal stick. | 10-08-2009 |
Jong-Hwa Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090201220 | HIGH IMPEDANCE SURFACE STRUCTURE USING ARTIFICIAL MAGNETIC CONDUCTOR, AND ANTENNA AND ELECTROMAGNETIC DEVICE USING THE SAME STRUCTURE - Provided are a high impedance surface structure using an AMC (artificial magnetic conductor) and an antenna and an electromagnetic device using the high impedance surface structure. The high impedance surface structure includes: a ground layer formed of a first conductor layer; a first dielectric layer formed on the ground layer; and an HIS (high impedance surface) layer formed of second conductor layers and a second dielectric layer on the first dielectric layer, wherein the second conductor layers are interdigitated with one another and vias connecting the second conductor layers to the ground layer are not formed. | 08-13-2009 |
| 20100007569 | DIPOLE TAG ANTENNA STRUCTURE MOUNTABLE ON METALLIC OBJECTS USING ARTIFICIAL MAGNETIC CONDUCTOR FOR WIRELESS IDENTIFICATION AND WIRELESS IDENTIFICATION SYSTEM USING THE DIPOLE TAG ANTENNA STRUCTURE - Provided are a dipole tag antenna using an artificial magnetic conductor (AMC) for wireless identification and a wireless identification system using the dipole tag antenna. The dipole tag antenna includes: a substrate formed of a first dielectric material; a conductive ground layer formed underneath the substrate; an AMC layer formed on the substrate; the dipole tag antenna mounted on the AMC layer and comprising a wireless identification chip; and the AMC directly mounted on a conductor. | 01-14-2010 |
Ohcheon Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20100179932 | ADAPTIVE DRIVE SUPPORTING APPARATUS AND METHOD - Provided are an adaptive drive supporting apparatus and method that provide a personalized telematics user interface capable of supporting safe driving and convenient use. The adaptive drive supporting apparatus includes: a statistics database unit which stores and manages information on an average degree of attention required when a driving operation, a state of a car, or an external environment changes, information on degrees of attention required for manipulations of interfaces of the car, and a similarity between the functions of the interfaces; a personal characteristic setting unit which sets an individual degree of attention for each driver based on the average degree of attention according to a change in at least one of the driving operation, the state of the car, and the external environment; and an interface providing unit which determines whether or not a sum of the individual degree of attention and the degree of attention required when each driver manipulates a requested interface is larger than a predetermined threshold degree of attention required for safe driving. | 07-15-2010 |
Oh Kee Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090116835 | WAVELENGTH SELECTIVE SWITCH - A wavelength selective switch is provided. The wavelength selective switch according to the present invention comprises: an optical demultiplexer for separating an incident light with a plurality of wavelengths multiplexed into a plurality of wavelength lights and outputting the separated wavelength lights; an optical amplifier for selectively amplifying or absorbing the separated wavelength lights; an optical deflector for selectively deflecting outputs of the optical amplifier; and an optical multiplexer for multiplexing the selectively deflected lights and outputting the multiplexed lights. | 05-07-2009 |
O Hyung Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090103557 | METHOD AND APPARATUS FOR ALLOCATING UPSTREAM CHANNEL RESOURCE IN HYBRID FIBER COAXIAL NETWORK - A method and apparatus for allocating upstream channel resources in a hybrid fiber coaxial (HFC) network are provided. A cable modem termination system (CMTS) previously provides cable modems (CMs) with a plurality of burst profiles through an extended interval usage code (IUC) of an upstream channel descriptor (UCD) message, and allocates resources to CMs by using an optimized burst profile according to an upstream channel status, thereby increasing transmission efficiency of an upstream channel. | 04-23-2009 |
Young Jae Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20110269067 | METHOD OF PREPARING TONER HAVING NARROW PARTICLE SIZE DISTRIBUTION - According to a method of preparing a toner by emulsion aggregation, viscosity of dispersions is controlled during an initial reaction by using an abietic acid so that a particle diameter distribution of the toner is narrowed. | 11-03-2011 |
| 20110269068 | METHOD OF PREPARING TONER HAVING NARROW PARTICLE SIZE DISTRIBUTION - According to preparing toner by emulsion aggregation, viscosity of dispersions is controlled during an initial reaction by using a cellulose derivative and/or a cyclodextrin derivative so that a particle diameter distribution of the toner is narrowed and environmental problems caused by the use of the toner may be reduced. | 11-03-2011 |
Young-Ju Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20100098205 | MODULAR REACTOR HEAD AREA ASSEMBLY - Provided is a modular reactor head area assembly. The modular reactor head area assembly is installed on a reactor head, and includes: a seismic support structure that performs functions of lifting, moving and reinstallation of the reactor head and control rod driving apparatuses, cooling of the control rod driving apparatuses, shielding of missile parts, and supporting with respect to a seismic load, and disperses a load applied to the control rod driving apparatuses; an upper module that is an assembly of components located at an upper portion of the seismic support structure for the control rod driving apparatuses; and a lower module that is an assembly of components located at a lower portion of the seismic support structure for the control rod driving apparatuses. The upper module and the lower module are | 04-22-2010 |
Young Su Kwon, Daejeon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080270710 | APPARATUS, METHOD AND DATA PROCESSING ELEMENT FOR EFFICIENT PARALLEL PROCESSING OF MULTIMEDIA DATA - Provided are an apparatus, a method, and a data processing element (DPE) for efficient parallel processing of multimedia data. The DPE includes: a memory routing unit (MRU) comprising a shared memory page shared by the DPE and DPEs that are adjacent to the DPE, and a shared page switch selectively connecting the shared memory page to the DPE and the adjacent DPEs; and a data processing unit (DPU) comprising a virtual page for connecting the DPU to the shared memory page, and a dynamic remapper assigning the shared memory page to a DPE according to conditions that a series of tasks for processing multimedia data are performed in the DPE and the adjacent DPEs, and controlling the shared page switch according to the assigning. Accordingly, multimedia data can be efficiently processed in parallel by mapping a temporal and directional shared memory between DPEs. | 10-30-2008 |
| 20080270711 | METHOD AND APPARATUS FOR DATA TRANSMISSION BETWEEN PROCESSORS USING MEMORY REMAPPING - Provided are a method and apparatus for efficiently transferring a massive amount of multimedia data between two processors. The apparatus includes a first local switch, which connects a virtual page of a first processor element to a shared memory page, a second local switch, which connects a virtual page of a second processor element to the shared memory page, a shared page switch, which connects a predetermined shared memory page of a shared physical memory to the first or second local switch, and a switch manager, which remaps a certain shared memory page of the shared physical memory that stores data of a task performed by the first processor element to the virtual page of the second processor element. Accordingly, since memory remapping is used, the massive amount of multimedia data can be transmitted by changing a method of mapping a memory, unlike a case when multimedia data is transmitted by using a memory bus. | 10-30-2008 |
| 20090150644 | APPARATUS AND METHOD FOR REDUCING MEMORY ACCESS CONFLICT - Provided are an apparatus and a method of reducing memory access conflict. An apparatus for reducing memory access conflict when a plurality of data processing elements perform simultaneous access to a memory including a plurality of pages, each of which includes a plurality of subpages, the apparatus comprising: an access arbiter mapping a subpage division address corresponding to least significant bits of a memory access address received from each of the data processing elements to another address having a same number of bits as the subpage division address in order for data to be output from each of the subpages in a corresponding page at a time of the simultaneous access; and a selector, prepared for each of the pages, selecting to output one of the data output from the subpages using the mapped results. | 06-11-2009 |