Lee, Daejeon-City
Bong Joo Lee, Daejeon City KR
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20100089179 | AUTOMATIC SEQUENTIAL SAMPLER FOR ROOF-TOP RUNOFF OF RAINWATER - There is provided an automatic sequential sampler for roof-top runoff of rainwater, which comprises: a sensing part, a controlling part and a sampling part, and more particularly, which takes samples of rainwater, at regular intervals, by sensing whether it rains and controlling the rotation and stop of a sample bottle shelf in the sampling part, using a timer and a counter. | 04-15-2010 |
20100206558 | APPARATUS AND METHOD FOR INSTANTANEOUSLY INJECTING TRACER FOR GROUNDWATER WELL - There is provided an apparatus for injecting a tracer within a groundwater observation well, which is capable of sequentially performing a tracer test by depth by injecting the tracer to a predetermined depth within the groundwater observation well. More particularly, the present invention relates to an apparatus and method for instantaneously injecting a tracer to a groundwater well, whereby opening and closing of a container receiving the tracer is controlled by using a pneumatic cylinder and the tracer on the ground is supplied to the container, so that the tracer is repeatedly carried and injected to a specific depth in a well. | 08-19-2010 |
20110120238 | Sequential groundwater sampler and sampling method thereof - The present invention relates to a sequential groundwater sampler and a sampling method thereof, and more particularly, the sampler is constructed with a first pipe, a second pipe, a first cylinder unit and a second cylinder unit. The first pipe plays a role as a container for vacuum sample bottle. The first pipe is fixedly inserted to the second pipe. The second pipe is connected to the two cylinders to be moved up and down vertically while surrounding the first pipe by an advance and retreat of the second cylinder unit. The second pipe plays a role of, passing a syringe needle amounted at the end of a first piston in the first cylinder unit through a rubber plug of a vacuum sample bottle at the bottom end of the first pipe, or separating the syringe needle from the vacuum sample bottle, by an advance and retreat of the first cylinder unit. If the second cylinder and the first cylinder sequentially advance, groundwater is injected to the vacuum sample bottle at the bottom end of the first pipe. If the first cylinder unit and the second cylinder unit sequentially retreat, the vacuum sample bottle completed with injection of the sample is separated downward from the first pipe gravity. The present invention is related to the sampler and the method that sequentially sampling groundwater at a particular depth in a well through repeating above processes. | 05-26-2011 |
20120031205 | Apparatus and method for groundwater sampling using hydraulic couplers - There are provided an apparatus and method for groundwater sampling, using a hydraulic coupler according to the present invention. In more particular, in the groundwater sampler which is positioned at multiple depths within a groundwater borehole to simultaneously take groundwater samples at the multiple depths, couplers are each connected to both ends of a water sampling pipe made of a metal pipe material. In case of positioning the sampler at a targeted depth, a socket and a plug forming each coupler are connected to each other, so that the both ends of the water sampling pipe-to lead groundwater to freely flow in/out. Thereafter, at the targeted depth, the sockets or plugs are permitted to be separated in the couplers at the both ends of the water sampling pipe by using a lift device, so that the both ends of the water sampling pipe are sealed to simultaneously taking groundwater samples at multiple depths. | 02-09-2012 |
20130014570 | AUTOMATIC SEEPAGE METERAANM Lee; Bong JooAACI Daejeon CityAACO KRAAGP Lee; Bong Joo Daejeon City KRAANM Ko; Kyung SeokAACI Daejeon CityAACO KRAAGP Ko; Kyung Seok Daejeon City KR - The present invention relates to an automatic seepage meter for measuring groundwater-surface water exchange in a mixed zone of stream. The present invention includes: the chamber installed in streambed sediment; the device for measuring amount of groundwater recharge through a change in water level accompanied by discharging water in the water in case of losing stream; and the device for measuring amount of groundwater discharge through a change in water level according to an increased water from the chamber to the water bath for measuring discharge in case of gaining stream. | 01-17-2013 |
Bong-Keun Lee, Daejeon-City KR
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20100311853 | MICROCELLULAR FOAM OF THERMOPLASTIC RESIN PREPARED WITH DIE HAVING IMPROVED COOLING PROPERTY AND METHOD FOR PREPARING THE SAME - The present invention relates to a microcellular foam of a thermoplastic resin and a method for preparing the same, and more particularly to a microcellular foam comprising a skin layer having a porosity of below 5% and a core layer having a porosity of at least 5%, wherein the thickness of the skin layer accounts for 5 to 50% of the entire foam, and a method for preparing the same. The microcellular foam of the present invention is advantageous in that it has a thicker skin layer and smaller and uniform micropores in the core layer, compared with conventional microcellular foams, while having mechanical properties comparable to those of conventional non-foamed sheets. | 12-09-2010 |
Byoung-Nam Lee, Daejeon-City KR
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20090198806 | DATA STRUCTURE FOR MANAGING SENSOR NETWORK USING ID OF SENSOR NODE AND METHOD USING THE SAME - A sensor node address management data structure and a method of managing a sensor network using an identifier of a sensor node can provide a single management system based on ID information used to identify the sensor node even though a sensor network management system does not provide a plurality of management systems based on an individual identification system for sensor networks and sensor nodes that are to be built in a variety of network environments. The sensor node address management data structure that is managed by a network management system for managing a sensor network includes: a first field including an identifier allocated to a sensor node; a second field indicating a network management type of the sensor node to make a connection to the sensor network; and a third field providing address information on the sensor node necessary for the connection to the sensor network. | 08-06-2009 |
20130238779 | DATA STRUCTURE FOR MANAGING SENSOR NETWORK USING ID OF SENSOR NODE AND METHOD USING THE SAME - A sensor node address management data structure and a method of managing a sensor network using an identifier of a sensor node can provide a single management system based on ID information used to identify the sensor node even though a sensor network management system does not provide a plurality of management systems based on an individual identification system for sensor networks and sensor nodes that are to be built in a variety of network environments. The sensor node address management data structure that is managed by a network management system for managing a sensor network includes: a first field including an identifier allocated to a sensor node; a second field indicating a network management type of the sensor node to make a connection to the sensor network; and a third field providing address information on the sensor node necessary for the connection to the sensor network. | 09-12-2013 |
Byoung-Seob Lee, Daejeon-City KR
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20090322457 | Design Method of High Magnetic Field Superconducting Magnet - Disclosed is a method for designing a superconducting magnet for generating high magnetic fields with high uniformity for controlling a stray field to be within an allowable range and acquiring structural and magnetic stability by optimizing the arrangement of positions and shapes of coils configuring the superconducting magnet. Volumes of a main coil and a shielding coil are set to be variables, and the critical value of a wires related on the current and magnetic field, the heat transfer depth, and the quench strain are defined to be restriction conditions so that linear programming is applied to determine an initial shape of the shielding coil and division of the main coil based on the sum of total volumes, that is, an objective function. The initial shapes of the main coil and the shielding coil determined through the linear programming are revised and the shape of a shimming coil is determined by using non-linear programming based on the objective function. | 12-31-2009 |
Byung Bog Lee, Daejeon-City KR
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20100042788 | METHOD AND APPARATUS FOR CONTROLLING SHARED MEMORY AND METHOD OF ACCESSING SHARED MEMORY - Provided are a method and apparatus for controlling a shared memory, and a method of accessing the shared memory. The apparatus includes a processing unit configured to process an application program, a user program unit configured to execute a program written by a user based on the application program of the processing unit, a shared memory unit connected to each of the processing unit and the user program unit through a system bus and configured to store data interchanged between the processing unit and the user program unit, and a control unit configured to relay a control signal indicating whether the system bus, by which the data is interchanged between the processing unit and the user program unit, is occupied, and control connection of each of the processing unit and the user program unit with the system bus in response to the control signal. In the apparatus, the processing unit and the user program unit can easily interchange a large amount of messages through the shared memory unit having an abundant memory space. | 02-18-2010 |
20100146157 | MULTI-RADIO INTERFACING AND DIRECT MEMORY ACCESS BASED DATA TRANSFERRING METHODS AND SINK NODE FOR PERFORMING THE SAME IN WIRELESS SENSOR NETWORK - Provided are a method of mediating a plurality of radio frequency (RF) transceivers, which is performed in a sink node in order to perform multi-radio interfacing between the sink node and a plurality of sensor nodes in a wireless sensor network (WSN), and a direct memory access (DMA) based data transfer method. | 06-10-2010 |
Byunggil Lee, Daejeon-City KR
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20090154711 | MULTI-PARTY KEY AGREEMENT METHOD USING BILINEAR MAP AND SYSTEM THEREFOR - The present invention provides an efficient method and system in which a plurality of participants share a secret key in a communication environment that is not ensured. According to an embodiment of the invention, each of the participants is assigned with a secret key from a key generation party, generates exchange information, and transmits its own exchange information to the other participant to exchange the exchange information with each other. Each of the participants generates a shared key on the basis of the exchange information and its own secret key. | 06-18-2009 |
Chanyong Lee, Daejeon-City KR
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20100138461 | APPARATUS FOR MANAGING NEW DEVICE COMPONENT OF MOBILE TERMINAL AND METHOD OF THE SAME - Provided is an apparatus for managing new device components of a mobile terminal which arranges and manages a component related file defined in a domain profile in a file directory structure and additionally arranges the corresponding device component related file corresponding to a new device when changing a mode to the new device during the operation of the corresponding domain system in the file directory, thereby reconfiguring the components within the domain system in the file directory. | 06-03-2010 |
Chul Wook Lee, Daejeon-City KR
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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 |
Eunyoung Lee, Daejeon City KR
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20110121156 | PORTABLE AND COLLAPSIBLE BOOKSTAND - A portable and collapsible bookstand apparatus includes a pair of main panels which is connected by a 180 degree foldable device; a pair of book-holding panels which is connected with the pair of main panels respectively by respective 90 degree foldable devices; a pair of bottom panels which is connected to the main panels respectively by respective 90 degree foldable devices; a plurality of height-control panels which is connected with respective bottom panels by respective 110 degree foldable devices, and are carved and inserted into the respective bottom panels when folded; and a plurality of notches in the main panels for the plurality of height-control panels to be inserted. | 05-26-2011 |
Haeryong Lee, Daejeon-City KR
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20090313206 | APPARATUS AND METHOD FOR PARSING OF EXTENSIBLE MEDIA - The present invention relates to an apparatus and a method for parsing of extensible media. In the present invention, neo-data including additional media are extracted from meta data of the extensible media by analyzing the extensible media, and a neo-data track is extracted from the extensible media and transmitted to a means for controlling the extensible media. According to the present invention, it is advantageous to maximize an extensible media service effect by providing a method for more effectively parsing extensible media having a new structure that can add device control for a realistic service and synchronization information to general media. | 12-17-2009 |
Hak-Joo Lee, Daejeon-City KR
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20110057675 | PERPENDICULAR FINE-CONTACT PROBE HAVING A VARIABLE-STIFFNESS STRUCTURE - An exemplary embodiment of the present invention provides a vertical micro contact probe that includes a column formed by longitudinally continuously stacking a plurality of basic units and a front end formed at the front end of the column and contacting an electrode pad of a semiconductor chip. The basic unit includes a probe body alternately bending to the left and right and protrusions protruding from the probe body at the left and right sides from the center of the width direction, and contacting the adjacent probe body to support the probe body under compression. | 03-10-2011 |
20110081521 | HIERARCHICAL STRUCTURE AND MANUFACTURING METHOD THEREOF - Provided are a shape of a hierarchical structure, an engineering effect of the hierarchical structure according to the shape, an increasing method of the engineering effect, an application method of the hierarchical structure for novel material or parts, and a mass-manufacturing method of the hierarchical structure. | 04-07-2011 |
20110163772 | MICRO CONTACT PROBE COATED WITH NANOSTRUCTURE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a micro contact probe used for a probe card. | 07-07-2011 |
20120118506 | APPARATUS FOR MANUFACTURING A HIERARCHICAL STRUCTURE - The present invention relates to an apparatus for massive manufacturing a hierarchical structure that can hierarchically form high performance micro units one a flexible substrate. For this purpose, an apparatus for manufacturing a hierarchical structure according to the present invention is provided to layer micro units provided on a dummy substrate that is made of a hard material on a target substrate that is made of a flexible material by releasing the micro units from the dummy substrate. The apparatus includes: a transfer stage flat-transferring the dummy substrate by supporting the same and a main roller rolling the target substrate by winding the same as the transfer stage proceeds and layering the micro unit of the dummy substrate on the target substrate. | 05-17-2012 |
Han Hyub Lee, Daejeon-City KR
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20110020001 | TIME DIVISION MULTIPLE ACCESS OVER WAVELENGTH DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORK - Provided is a time division multiple access over wavelength division multiplexed passive optical network (TDM-over-WDM-PON) system. According to the TDM-over-WDM-PON system, a downstream optical signal is separated according to a wavelength in a remote node, transmitted to an optical amplifying device located in subscriber equipment, amplified in the optical amplifying device, transmitted back to the remote node, and then transmitted to the subscriber equipment. Also, an upstream optical signal is transmitted to a wavelength converting device located in the subscriber equipment from the remote node, wavelength-converted in the wavelength converting device, returned back to the remote node, and then transmitted to a central office. | 01-27-2011 |
Heesoo Lee, Daejeon-City KR
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20100195752 | TRANSMITTER/RECEIVER FOR CONTROLLING MULTIUSER MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM AND METHOD THEREOF - Provided are a method of controlling a multi-user multiple input multiple output (MIMO) system and a transmitter/receiver used in the method. In the method, it can be determined whether feedback information is fed back according to the feedback information type rather than being indiscriminately provided to a transmitter, and then only a necessary feedback information type is transmitted, thereby increasing system capacity while reducing feedback load. | 08-05-2010 |
Heyung-Sub Lee, Daejeon-City KR
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20090136833 | CASE FILM FOR POUCH TYPE LITHIUM PRIMARY BATTERY - Provided is a case film for a pouch type lithium primary battery which is suitable for application in a film type lithium primary battery. The case film for a pouch type lithium primary battery includes a flexible multilayer film in which a first polymer film, a second polymer film, a metal film, and a third polymer film are sequentially stacked. The first polymer film is formed of a hydrocarbon compound substituted or non-substituted with a halogen atom. The second polymer film is formed of an amorphous or low crystalline polymer having a crystallinity of 0 to 20%. The third polymer film is formed of a crystalline polymer having a crystallinity of 40 to 100%. | 05-28-2009 |
20100308972 | COMMUNICATION METHOD FOR RADIO FREQUENCY IDENTIFICATION - Provided is a communication method for radio frequency identification (RFID). In order to transmit a command message with respect to an RFID tag, an RFID reader generates a command message comprising a command code indicating a type of command to be delivered to the RFID tag, a response format having one or more bits for indicating a type of additional data to be added to a response message to be received from the RFID tag, and an identifier identifying the RFID tag; and transmits the command message to the RFID tag, thereby allowing the RFID tag to immediately transmit the additional data via the response message in response to the command message. | 12-09-2010 |
Hogeun Lee, Daejeon-City KR
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20100161205 | SYSTEM FOR PROVIDING REAL-TIME TRAFFIC INFORMATION USING WIRELESS NETWORK AND A METHOD THEREOF - The present invention relates to a system for providing real-time traffic information using a wireless network and a method thereof, particularly a system for providing real-time traffic information using a wireless network, by using a wireless network technology for preventing a traffic accident and an accident due to traffic congestion, and a method of providing real-time traffic information using a wireless network. A system for providing real-time traffic information using a wireless network according to an embodiment of the present invention includes: one or more vehicle velocity information collectors that are disposed on a road to establish a wireless network for sharing information, and collect vehicle velocity information of vehicles on the road; and a traffic information provider that receives the vehicle velocity information from the one or more vehicle velocity information collectors and provides a traffic information based on the vehicle velocity information. | 06-24-2010 |
Hwan-Gu Lee, Daejeon-City KR
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20080279152 | METHOD AND APPARATUS FOR PERFORMING POWER CONSUMPTION BASED HANDOVER BETWEEN HYBRID NETWORKS - Provided are a method and apparatus for performing power consumption based handover between hybrid networks. The method includes listing candidate networks based on a traffic class and terminal power consumption expected for each of the hybrid networks, and selecting a network for the handover according to the traffic class and a user preference from among the listed candidate networks. Accordingly, power can be saved, and simultaneously a network can be effectively selected. | 11-13-2008 |
Hyoseok Lee, Daejeon-City KR
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20100074191 | RANDOM ACCESS METHOD USING DIFFERENT FREQUENCY HOPPING PATTERNS BETWEEN NEIGHBORING CELLS AND MOBILE COMMUNICATION DEVICE - Provided are a random access method of a mobile station and a mobile communication device performing the same. The mobile station can obtain a diversity gain without a Random Access Channel (RACH) burst collision by hopping according to a cell group in a frequency domain and transmitting a random access when random access resources are used between neighboring cells and detect an RACH even with low transmission power by applying switching diversity together with the frequency hopping. | 03-25-2010 |
Hyoyoung Lee, Daejeon-City KR
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20090294762 | COMPOUND HAVING THIOL ANCHORING GROUP, METHOD OF SYNTHESIZING THE SAME, AND MOLECULAR ELECTRONIC DEVICE HAVING MOLECULAR ACTIVE LAYER FORMED USING THE COMPOUND - Provided are an electron donor-azo-electron acceptor compound having a thiol-based anchoring group, a method of synthesizing the compound, and a molecular electronic device having a molecular active layer formed of the compound. The compound for forming a molecular electronic device includes an azo compound that has a dinitrothiophene group and an aminobenzene group having thiol derivatives. The compound forms a molecular active layer in the molecular electronic devices. The molecular active layer is self-assembled on an electrode using the thiol derivative in the azo compound as an anchoring group. The molecular active layer in the molecular electronic device forms a switching device switching between an on-state and an off-state in response to a voltage applied to electrodes or a memory device storing a predetermined electric signal in response to a voltage applied to the electrodes. | 12-03-2009 |
20100019230 | MOLECULAR ELECTRONIC DEVICE INCLUDING PLURALITY OF MOLECULAR ACTIVE LAYERS AND METHOD OF MANUFACTURING THE MOLECULAR ELECTRONIC DEVICE - Provided are a molecular electronic device including a functional molecular active layer having a stack structure including oppositely charged first and second molecular active layers, and a method of manufacturing the molecular electronic device. The molecular electronic device includes: a first electrode; an organic dielectric thin layer comprising molecules each having a first end self-assembled on a surface of the first electrode and a second end having a cationic or anionic group; a functional molecular active layer stacked on the organic dielectric thin layer by selective self-assembly with positive and negative ions and comprising an electroactive functional group having a cyclic compound; and a second electrode formed on the functional molecular active layer. | 01-28-2010 |
20100090210 | COMPOUND HAVING THIOL ANCHORING GROUP, METHOD OF SYNTHESIZING THE SAME, AND MOLECULAR ELECTRONIC DEVICE HAVING MOLECULAR ACTIVE LAYER FORMED USING THE COMPOUND - Provided are an electron donor-azo-electron acceptor compound having a thiol-based anchoring group, a method of synthesizing the compound, and a molecular electronic device having a molecular active layer formed of the compound. The compound for forming a molecular electronic device includes an azo compound that has a dinitrothiophene group and an aminobenzene group having thiol derivatives. The compound forms a molecular active layer in the molecular electronic devices. The molecular active layer is self-assembled on an electrode using the thiol derivative in the azo compound as an anchoring group. The molecular active layer in the molecular electronic device forms a switching device switching between an on-state and an off-state in response to a voltage applied to electrodes or a memory device storing a predetermined electric signal in response to a voltage applied to the electrodes. | 04-15-2010 |
20100297808 | MOLECULAR ELECTRONIC DEVICE INCLUDING ORGANIC DIELECTRIC THIN FILM AND METHOD OF FABRICATING THE SAME - Provided are a molecular electronic device and a method of fabricating the molecular electronic device. The molecular electronic device includes a substrate, an organic dielectric thin film formed over the substrate, a molecular active layer formed on the organic dielectric thin film and having a charge trap site, and an electrode formed on the molecular active layer. The organic dielectric thin film may be immobilized on the electrode or a Si layer by a self-assembled method. The organic dielectric thin film may include first and second molecular layers bound together through hydrogen bonds. An organic compound may be self-assembled over the substrate to form the organic dielectric thin film. The organic compound may include an M′-R-T structure, where M′, R and T represent a thiol or silane derivative, a saturated or unsaturated C | 11-25-2010 |
Hyukjoon Lee, Daejeon-City KR
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20100039981 | HANDOVER METHOD USING RELAY STATION HAVING HANDOVER CONTROL FUNCTION AND MULTI-HOP RELAY SYSTEM - Provided are a handover method using a relay station having a handover control function and a multi-hop relay system. When handover of mobile stations connected to a relay station is required, the relay station negotiates handover of the mobile stations with a base station by exchanging a handover request message and a handover response message. Upon execution of handover of the mobile stations, the relay station collects handover results of the mobile stations and transmits the handover results to the base station. The base station then updates information about the handed-over mobile stations. | 02-18-2010 |
20100087196 | METHOD OF DEREGISTERING RELAY STATION AND MULTI-HOP RELAY SYSTEM FOR THE METHOD - A method of deregistering a relay station and a multi-hop relay system for the method are provided. In order to deregister the relay station, a base station ends a handover of mobile stations connected to the relay station, and informs the relay station accordingly. When the handover of the mobile stations is ended, the relay station performs a deregistration procedure. Messages that already exist are used as messages necessary for the method. | 04-08-2010 |
Hyungjik Lee, Daejeon-City KR
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20100115511 | SYSTEM AND METHOD FOR PROVIDING PERSONALIZATION OF VIRTUAL MACHINES FOR SYSTEM ON DEMAND (SOD) SERVICE - Disclosed is a system for providing personalization of virtual machines for a system on demand (SoD) service includes an SoD server, wherein the SoD server includes an aspect measuring unit that measures user's use habits and aspects with respect to the peripheral devices on the basis of use or not of the peripheral devices; a preference generating unit that calculates preference for each attribute with respect to attributes included in the peripheral devices on the basis of the use habits and aspects measured by the aspect measuring unit; and a configuration unit that calculates satisfaction for each device with respect to peripheral devices which can be used in the virtual machine on the basis of the preference for each attribute calculated by the preference generating unit and configures the peripheral devices of the virtual machine on the basis of the calculated satisfaction for each device. | 05-06-2010 |
20100146506 | SYSTEM AND METHOD FOR OFFERING SYSTEM ON DEMAND (SoD) VIRTUAL-MACHINE - There are provided a system for offering a SoD virtual-machine includes a main server that includes: a server communication unit that transmits and receives data to and from a plurality of peripheral devices and a plurality of user terminals; a peripheral device detection unit that detects one or more peripheral devices among peripheral devices around the user terminal on the basis of user information received from the user terminal connected through the server communication unit and peripheral device information around the user terminal; and a server control unit that sets one or more peripheral devices detected by the peripheral device detection unit as IO devices of a virtual machine allocated to the connected user terminal. | 06-10-2010 |
20100146507 | SYSTEM AND METHOD OF DELIVERY OF VIRTUAL MACHINE USING CONTEXT INFORMATION - There is provided a system of delivery of a virtual machine using context information. The system of delivery of a virtual machine includes: a context information manager that receives one or more user context information from a user terminal device; and a virtual machine generator that generates a virtual machine suitable for the user terminal device in accordance with the one ore more received user context information and outputs the generated virtual machine to the user terminal device. | 06-10-2010 |
Hyungsun Lee, Daejeon-City KR
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20110239139 | REMOTE CONTROL APPARATUS USING MENU MARKUP LANGUAGE - Provided is a remote control apparatus using a menu markup language, which arranges, within an area, a virtual menu map for controlling electronic devices from menu map information that is defined by a menu markup language (MenuXml) having an extensible markup language (XML) format, extracts control information corresponding to motion information of a user generated within the area from the menu map information, and transmits the extracted control information to the electronic devices. | 09-29-2011 |
Iii Young Lee, Daejeon City KR
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20100034827 | NOVEL HIV REVERSE TRANSCRIPTASE INHIBITORS - The invention is related to compounds of Formula (I), (II), or (III); or a pharmaceutically acceptable salt, solvate, ester, and/or phosphonate thereof, compositions containing such compounds, and therapeutic methods that include the administration of such compounds. | 02-11-2010 |
20130078256 | NOVEL HIV REVERSE TRANSCRIPTASE INHIBITORS - The invention is related to compounds of Formula (I): | 03-28-2013 |
Ill Y. Lee, Daejeon City KR
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20110076276 | Novel HIV reverse transcriptase inhibitors - The invention is related to compounds of Formula (I): | 03-31-2011 |
Ill Young Lee, Daejeon City KR
In Hwan Lee, Daejeon-City KR
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20100042788 | METHOD AND APPARATUS FOR CONTROLLING SHARED MEMORY AND METHOD OF ACCESSING SHARED MEMORY - Provided are a method and apparatus for controlling a shared memory, and a method of accessing the shared memory. The apparatus includes a processing unit configured to process an application program, a user program unit configured to execute a program written by a user based on the application program of the processing unit, a shared memory unit connected to each of the processing unit and the user program unit through a system bus and configured to store data interchanged between the processing unit and the user program unit, and a control unit configured to relay a control signal indicating whether the system bus, by which the data is interchanged between the processing unit and the user program unit, is occupied, and control connection of each of the processing unit and the user program unit with the system bus in response to the control signal. In the apparatus, the processing unit and the user program unit can easily interchange a large amount of messages through the shared memory unit having an abundant memory space. | 02-18-2010 |
20100146157 | MULTI-RADIO INTERFACING AND DIRECT MEMORY ACCESS BASED DATA TRANSFERRING METHODS AND SINK NODE FOR PERFORMING THE SAME IN WIRELESS SENSOR NETWORK - Provided are a method of mediating a plurality of radio frequency (RF) transceivers, which is performed in a sink node in order to perform multi-radio interfacing between the sink node and a plurality of sensor nodes in a wireless sensor network (WSN), and a direct memory access (DMA) based data transfer method. | 06-10-2010 |
Jae-Chol Lee, Daejeon-City KR
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20090230842 | Electroluminescent devices with low work function anode - Disclosed are organic electroluminescent devices employing materials of a low reduction potential in a layer functioning hole-injection. The organic electroluminescent devices may employ an anode material having a relatively low work function. Aluminum may be used in anode. During the operation, the organic electroluminescent devices may form a virtual electrode in their internal area, which enhances injection of carriers from a nearby electrode. Use of aluminum in the anode helps construction of cathode-emission organic electroluminescent devices. | 09-17-2009 |
Jae Chul Lee, Daejeon City KR
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20100126307 | MULTI-TURN HYDRAULIC ACTUATOR - There is provided a multi-turn hydraulic actuator used to open/close a passageway in ground and sea industries including general industrial machines, oil refineries and chemical plants and power generating plants, among others, and more particularly, a multi-turn hydraulic actuator comprising: a hydraulic motor and a decelerator, among others, whereby high torque is efficiently obtained by using low electric power, compared to a conventional electric actuator, and whereby an operation part and a drive part are freely attached to/detached from at a user's necessity. | 05-27-2010 |
Jie-Hyun Lee, Daejeon-City KR
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20100014545 | ATHERMAL EXTERNAL CAVITY LASER - Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding. The ECL does not need additional temperature controlling components and thus can be manufactured compact and at low cost, and thus can be used as a light source of a dense wavelength division multiplexing (DWDM) system in designing economical WDM passive optical networks (PON). | 01-21-2010 |
20110026923 | APPARATUS AND METHOD FOR OLT AND ONU FOR WAVELENGTH AGNOSTIC WAVELENGTH-DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORKS - In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data. It is possible to improve the quality and reliability of downstream transmission by sufficiently increasing an extinction ratio, and improve the quality and reliability of upstream transmission by sufficiently flattening an input downstream optical signal in a semiconductor optical amplifier. | 02-03-2011 |
Jongyoung Lee, Daejeon-City KR
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20080267121 | NODE DEVICE AND METHOD FOR BEACON SCHEDULING IN AD-HOC NETWORK AND DATA TRANSMITTING METHOD THEREOF - Provided are a device of a node and method for beacon scheduling in an ad-hoc network and a data transmitting method thereof, which reduce power consumptions of nodes in an ad-hoc network when data communications between the nodes occur frequently. A beacon transmitting node checks its residual power. If the residual power is lower than a predetermined level, the beacon transmitting node notifies a plan to change its beacon cycle to other nodes. Thereafter, the beacon transmitting node increases the beacon cycle and transmits a beacon at the increased beacon cycles. Consequently, the beacon transmitting node can change its beacon cycle dynamically according to its power condition. Thus, the life span of the node can be increased. Therefore, it is possible to reduce an overhead of reconstructing a sensor network. | 10-30-2008 |
20090122778 | APPARATUS AND METHOD FOR ASSIGNING TIME SLOT FOR TRANSMITTING BEACON IN WIRELESS SENSOR NETWORK - A method and an apparatus for assigning a time slot for transmitting a beacon in a wireless sensor network operated in a beacon mode are provided. In the method and apparatus for assigning a time slot according to the present invention, the total time slots assigned to the network are divided into N blocks and a node to which a time slot is exclusively assigned, among nodes to which a specific node is capable of directly and wirelessly transmitting, is selected as a parent node, the network is divided into two or more regions centering the parent node, a block having the time slot assigned to the parent node and adjacent blocks, among the N blocks, are respectively assigned to the regions, a time slot having been yet unassigned, among the time slots belonging to the block assigned to the region to which the specific node belongs among the divided regions, is assigned as the time slot of the specific node. | 05-14-2009 |
20110164573 | METHOD AND APPARATUS FOR ASSIGNING CHANNEL IN AD-HOC NETWORK - The present invention provides a method and apparatus for assigning a channel in an ad-hoc network, which can minimize beacon collision in the ad-hoc network and prevent channel overlapping or collision, and thus a channel can be efficiently assigned. The method of assigning a channel including: obtaining join order information which is information on the order in which a first node has been joined to a second node, which is a parent node, and level information of the second node in an ad-hoc network; determining a reference value for setting a channel that is to be assigned to the first node based on an address value of the first node, which is determined based on the join order information and the level information, a level value of the first node, a channel value of the second node, which is determined based on the level information, and the join order information; and determining a channel value of the first node by dividing the reference value by the maximum number of usable channels in the ad-hoc network. | 07-07-2011 |
Jong-Young Lee, Daejeon-City KR
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20110125922 | METHOD AND APPARATUS FOR SETTING ROUTING PATH IN WIRELESS SENSOR NETWORK - Provided are a method and apparatus for setting a routing path in a wireless sensor network. The apparatus for setting a routing path includes a neighbor table storing information of a peripheral device within wireless communication distance of a transmitter transmitting data; a searching unit sequentially searching whether at least one of an address of a destination, a parent address or ancestor address of the destination representing an address of a receiver receiving data transmitted by the transmitter exists or not in the neighbor table; and a link quality indicator (LQI) judging unit transmitting the data to the receiver when a LQI value of the address is greater than a value that is previously set in a case in which an address is searched in the searching unit. | 05-26-2011 |
Jooyoung Lee, Daejeon-City KR
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20100146636 | APPARATUS AND METHOD FOR RECORDING AND REPRODUCING IMAGES - Provided is imparting authentication codes to image data photographed by a camera connected to the apparatus for recording and reproducing images to generate encryption data and monitors control instructions input from the outside to the apparatus for recording and reproducing images, thereby interrupting the control instructions that store or cancel the image data stored in the apparatus for recording and reproducing images. As a result, the integrity of the image data cannot be questioned. Further, when the image data stored in the apparatus for recording and reproducing images are submitted as evidence, the integrity of the image data and the information on the corresponding image data submitted as evidence can be verified by using the authentication data generated for the original image data. | 06-10-2010 |
Jung A. Lee, Daejeon-City KR
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20110152529 | TRANSITION METAL COMPLEX, CATALYST COMPOSITION INCLUDING THE SAME AND OLEFIN POLYMER USING CATALYST COMPOSITION - Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent. | 06-23-2011 |
20110160413 | TRANSITION METAL COMPLEX, CATALYST COMPOSITION INCLUDING THE SAME AND OLEFIN POLYMER USING CATALYST COMPOSITION - Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, a sterically hindered monomer can easily approach the transition metal complex. By using a catalyst composition including the transition metal complex, a linear low density polyolefin copolymer having a high molecular weight and a very low density polyolefin copolymer having a density of 0.910 g/cc or less can be produced in a polymerization of monomers having large steric hindrance. Further, the reactivity for the olefin monomer having large steric hindrance is excellent. | 06-30-2011 |
Jun Hwa Lee, Daejeon-City KR
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20100027558 | HYBRID IMPLICIT TOKEN CARRIER SENSING MULTIPLE ACCESS/COLLISION AVOIDANCE PROTOCOL - Provided is a distributed and asynchronous implicit token carrier sense multiple access/collision avoidance (CSMA/CA) protocol guaranteeing quality of service for both real time and non-real time traffic. The implicit token CSMA/CA protocol allocates a band in an entire bandwidth to voice traffic and allows the remaining bands to be used for data traffic. The implicit token CSMA/CA protocol includes applying a token passing protocol to transmit voice traffic in real time by having a band in an entire bandwidth allocated using a predetermined data frame and applying a CSMA/CA mechanism to transmit data traffic in non-real time by employing remaining bands not allocated to the voice traffic using another predetermined data frame. | 02-04-2010 |
Kangchan Lee, Daejeon-City KR
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20100010954 | DEVICE AND METHOD OF PROCESSING RULES BASED ON WEB SERVICES - Provided is a device for storing a rule describing an event, a condition to be satisfied by the event, and an action to be executed when the condition is satisfied and executing the action of the rule in an expended structure for using web services so as to effectively process the web services in various devices as well as a computer. In addition, a global rule manager for inspecting the validity of the rule when the rule is stored and executed is provided. Accordingly, the web services can be effectively used in a ubiquitous environment. | 01-14-2010 |
Kangwoo Lee, Daejeon-City KR
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20090207769 | METHOD AND APPARATUS FOR SCHEDULING TIMING FOR COMMUNICATION BETWEEN SENSOR NODES IN WIRELESS SENSOR NETWORK - Provided is a method of scheduling timing for communication between sensor nodes in a wireless sensor network, the method including categorizing a plurality of sensor nodes in a cluster into several groups, respectively assigning time slots to the groups, and establishing data communication according to the assigned time slots. | 08-20-2009 |
20100145514 | APPARATUS AND METHOD FOR CONTROLLING MULTI-ROBOT LINKED IN VIRTUAL SPACE - The present invention relates to an apparatus and method for controlling a multi-robot linked in virtual space, and when an event is generated in accordance with information change in virtual space including the web as well as the environmental change around a robot, the present invention controls individual behavior or collective behavior or corresponding robots by transmitting behavior data corresponding to the generated event to a plurality of robots. According to the present invention, by making a robot perform specific behavior in response to not only changes in the real environment, but information changes in the web, it is possible to arouse the user's interest or the developer's originality while removing due to complicity of the real environment, which is a problem limiting application of the robot, or dynamic response. | 06-10-2010 |
20100168912 | METHOD OF INVOKING ASYNCHRONOUS FUNCTION FOR CONTROLLING ROBOTS - A method of invoking an asynchronous function includes: requesting asynchronous operation performance according to the asynchronous function invoking; immediately transferring results according to the request of the asynchronous operation performance and returning a control object that can control the asynchronous operation performance of the corresponding asynchronous function; confirming the performance state of the asynchronous operation through the returned control object and confirming whether the state can be cancelled; if it is determined that the performance state of the asynchronous operation can be cancelled, confirming whether a forced cancellation request is requested; and if it is determined that the forced cancellation request is received, forcibly cancelling the asynchronous operation performance. | 07-01-2010 |
20100168914 | DIAGNOSIS AND MANAGEMENT SERVER FOR MULTI-KINDS ROBOTS - Provided proposes a structure of a robot management server and an internal structure of a robot that can interwork with an external server providing functions such as voice recognition, voice synthesis, image recognition, speaker recognition, gesture recognition, etc., and provide the corresponding functions as basic functions of the robot. Through the structure, the same interface, which accesses the internal structure of the robot, can be provided and the robot developer can develop applications handling multi-kinds robots and applications without being limited by the basic functions of the robot, by using the interface. In addition, malfunction and failure, which can occur during the operation of the robot, are checked by diagnosing, such that applications capable of appropriately processing the malfunction and failure can be developed. | 07-01-2010 |
Ki-Woo Lee, Daejeon City KR
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20110168222 | Amtec with heat pipe - There is provided an AMTEC (alkali metal thermal-electric converter) with a heat pipe and more particularly, to an AMTEC with a heat pipe minimized a heating part and a condensation part of the AMTEC and improved in efficiency of thermal to electric conversion through installing the heating and cooling heat pipes in the AMTEC, in which a metal fluid is heated by latent heat of an operating fluid of the heat pipe, instead of the heat conduction from a heat source, thereby reducing a temperature difference needed for heat transfer to vaporize the metal fluid even by a heat source of a lower temperature than a conventional heat source; improving a cooling performance in a condensation part to result in the high efficiency of thermal to electric conversion; using no additional driving components for driving the heat pipe. | 07-14-2011 |
Kwangyong Lee, Daejeon-City KR
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20100153678 | MEMORY MANAGEMENT APPARATUS AND METHOD - Disclosed is a memory management apparatus and method. The memory management apparatus includes a memory, an asymmetrical multi-core processor in which a core having a memory management unit and a core not having a memory management unit exist together, and a memory allocation processing unit. The memory allocation processing unit collects memory fragments dispersed in the memory into one consecutive area in response to the memory allocation request from the core not having the memory management unit and then allocates the one collected consecutive area to the corresponding cores. The one consecutive area is formed by moving the memory areas that are being used by the core having the memory management unit. | 06-17-2010 |
Kyeseon Lee, Daejeon-City KR
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20090103437 | Method of transmitting/receiving data in sensor network for reducing overhearing of sensor nodes - Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node. The receiver node determines a duration time of a deactivated state of the receiver node based on the received first preamble, thereby reducing overhearing in the sensor network. | 04-23-2009 |
20090103564 | Method and apparatus for controlling media access in sensor network - Provided are a method and apparatus for controlling media access in a sensor network and a method of managing traffic information. Since traffic information is exchanged between nodes and data is transmitted by using a dynamic long preamble according to receiver nodes, data transmission efficiency can be improved, energy consumed to transmit the long preamble can be reduced, and data transmission delay can be reduced as well. | 04-23-2009 |
20090161553 | APPARATUS FOR ANALYZING UBIQUITOUS SENSOR NETWORK PROTOCOL - An apparatus for analyzing a USN protocol includes a packet analyzer and a protocol analyzer. The packet analyzer collects packets communicated between USN sensor nodes through at least one or more channels. The protocol analyzer processes/displays the collected packets using an XML schema defined according to the USN protocol. Thus, the USN protocol analyzing apparatus can decode/encode packets collected through a plurality of channels. | 06-25-2009 |
Mi-Suk Lee, Daejeon-City KR
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20100057449 | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC - An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a core codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced. | 03-04-2010 |
20130066627 | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC - An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced. | 03-14-2013 |
20130073282 | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC - An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced. | 03-21-2013 |
Moon-Sik Lee, Daejeon-City KR
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20100080307 | RANDOM ACCESS PREAMBLE STRUCTURE IN EXTENDED CELLS ENVIRONMENT - Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system. | 04-01-2010 |
Mun Seob Lee, Daejeon-City KR
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20090269066 | Single-Unit Integrated Transceiver Having Pump Source and Transceiver Module Using the Same - Provided are a sing-unit integrated transceiver having a pump source and a transceiver module using the transceiver. The single-unit integrated transceiver includes: an optical transmitter converting an input electric signal into a downstream optical signal; an optical receiver converting a received upstream optical signal into an electric signal; the pump source amplifying the downstream or upstream optical signal using a gain medium positioned in an optical transmission line to amplify an output optical signal; a convergence unit arranging or converging the downstream and upstream optical signals to/from the optical transmission line; and a multiplexing and/or a demultiplexing filter, the multiplexing filter positioned on an optical path between the optical transmitter/pump source and the convergence unit, and multiplexing the downstream optical signal and the amplified optical signal to pass to the convergence unit, the demultiplexing filter positioned on an optical path between the convergence unit and the optical receiver and demultiplexing the upstream optical signal to pass to the optical receiver. | 10-29-2009 |
20100272437 | TDMA PASSIVE OPTICAL NETWORK OLT SYSTEM FOR BROADCAST SERVICE - Provided is a TDMA (time division multiple access) PON (passive optical network) OLT (optical line terminal) system for a broadcast service, including packet processor determining information according to types of frames (unicast, multicast, and broadcast frames) and a switch output port using header information (an IP address of a packet header, MAC (medium access control) addresses of Ethernet frames, and the like) of data received from an external node or the ONT (optical network terminal) and attaching the information to header parts of the frames to generate second data, a switch copying the second data by a predetermined number of times according to a transmission method and transmitting the second data to a corresponding destination output port according to the identification codes, M TDMA PON MAC processors removing the identification codes added to the second data and converting the second data into TDMA PON frames, and M optical transceivers converting the TDMA PON frames into optical signals and transmitting the optical signals to an ONT. | 10-28-2010 |
Myoung-Goo Lee, Daejeon-City KR
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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 |
20110298307 | COOLING UNIT FOR NUCLEAR REACTOR CONTROL ROD DRIVING APPARATUS - A cooling unit cooling a coil assembly that generates electromagnetic force for driving a nuclear reactor control rod, and including a coil surrounding a driving shaft of the nuclear reactor control rod so as to generate the electromagnetic force; a coil housing surrounding the coil so as to enclose the coil; a cooling shroud-shell forming a cooling flow path between the cooling shroud-shell and the coil housing, whereby a cooling fluid for cooling heat that is generated in the coil passes through the cooling flow path; and a plurality of cooling fins disposed on the cooling flow path in a radial direction so as to allow heat to be effectively exchanged between the coil and the cooling fluid that flows through the cooling flow path. | 12-08-2011 |
Myung Hyun Lee, Daejeon-City KR
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20080226222 | OPTO-ELECTRIC BUS MODULE AND METHOD OF MANUFACTURING THE SAME - Provided are an opto-electric bus module and a method of manufacturing the opto-electric bus module. The opto-electric bus module includes an opto-electric interconnection unit where a concave-shaped micro structure is formed on a lower surface of a polymer structure and an optical bench where a convex-shaped micro structure is formed in a position corresponding to the concave-shaped micro structure, at least one second electric interconnection for electric connection with a semiconductor chip is formed, and the semiconductor chip and an opto-electric device can be mounted. Thus, automatic, efficient, high-speed, and high-integration optical communication and electric communication between multi-chips can be completed at the same time by using the opto-bus module which provides low-speed electric communication while manually maintaining solid optical coupling. | 09-18-2008 |
Myung-Lae Lee, Daejeon-City KR
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20100050771 | CAPACITIVE ACCELEROMETER - A conventional capacitive accelerometer has a limitation in reducing a distance between a sensing electrode and a reference electrode, and requires a complex process and a separate method of correcting a clearance difference caused by a process error. However, the capacitive accelerometer of the present invention has high sensitivity, can be simply manufactured by maintaining a very narrow distance between a reference electrode and a sensing electrode, and can make it unnecessary to individually correct each manufactured accelerometer by removing or drastically reducing a functional difference due to a process error. | 03-04-2010 |
Nam-Yeal Lee, Daejeon-City KR
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20080219047 | APPARATUS AND METHOD FOR WRITING DATA TO PHASE-CHANGE MEMORY BY USING POWER CALCULATION AND DATA INVERSION - Provided are an apparatus and method for writing data to a phase-change random access memory (PRAM) by using writing power calculation and data inversion functions, and more particularly, an apparatus and method for writing data which can minimize power consumption by calculating the power consumed while input original data or inverted data is written to a PRAM and storing the data consuming less power. A PRAM consumes a significant amount of power in order to store data in a memory cell since a large electric current is required to flow for a long period of time. According to the present invention, since the PRAM consumes different amounts of power when writing data with a value of 0 and data with a value of 1, the power consumed when input original data is stored and the power consumed when the input original data is inverted and stored are compared to each other, the data with a smaller power consumption is stored when the data is written to the PRAM as a word unit, and thus the power consumption of the PRAM can be reduced. | 09-11-2008 |
20080237564 | Phase-Change Memory Device Using Sb-Se Metal Alloy and Method of Fabricating the Same - Provided are a phase-change memory device using a phase-change material having a low melting point and a high crystallization speed, and a method of fabricating the same. The phase-change memory device includes an antimony (Sb)-selenium (Se) chalcogenide Sb | 10-02-2008 |
20110065246 | EMBEDDED PHASE-CHANGE MEMORY AND METHOD OF FABRICATING THE SAME - An embedded memory required for a high performance, multifunction SOC, and a method of fabricating the same are provided. The memory includes a bipolar transistor, a phase-change memory device and a MOS transistor, adjacent and electrically connected, on a substrate. The bipolar transistor includes a base composed of SiGe disposed on a collector. The phase-change memory device has a phase-change material layer which is changed from an amorphous state to a crystalline state by a current, and a heating layer composed of SiGe that contacts the lower surface of the phase-change material layer. | 03-17-2011 |
Sang-Gug Lee, Daejeon-City KR
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20090156158 | SUPER REGENERATIVE RECEIVER AND METHOD OF SAVING POWER OF THE SAME - A low power super regenerative receiver and a method of reducing the power consumption of the low power super regenerative receiver are provided. The super regenerative receiver includes: an oscillator having a start-up time period starting oscillation that varies according to an existence of an input signal; and a power controller supplying power within the start-up time period of the oscillator. | 06-18-2009 |
20110006824 | WAKE-UP RECEIVER AND WAKE-UP METHOD USING DUTY CYCLING AND POWER OFF TECHNIQUE - Provided is a low-power wake-up receiver that is sensitive to electric waves, by which power consumed by a radio frequency (RF) transceiver of a sensor node in a ubiquitous sensor network (USN) is minimized. A wake-up receiver waking up a main transceiver includes a duty cycle signal generation unit controlling a duty cycle of a duty cycle signal; a burst signal detection unit receiving an input signal including a burst signal and a data signal based on the duty cycle signal, amplifying the input signal, and, if the amplified input signal is the burst signal, outputting a control signal; and a data signal detection unit re-amplifying the amplified input signal based on the control signal, and, if the re-amplified input signal is the data signal, outputting a wake-up signal. Power supplied to the duty cycle signal generation unit is interrupted based on the control signal and power is re-supplied to the duty cycle signal generation unit based on the wake-up signal. | 01-13-2011 |
Sang-Mu Lee, Daejeon-City KR
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20080265897 | Method of Detecting Soil Structure Using Voltage Slope and Measuring Earth Resistance - Provided is a method of accurately measuring earth resistance even when the composition state of soil that affects the installation of a metering device for measuring earth resistance is unknown. The method comprises measuring a potential at a first potential electrode point, measuring a potential at a second potential electrode point, calculating a voltage slope corresponding to a change rate of potential difference, using a potential difference between the first and second potential electrode points, and setting a potential point according to voltage slope characteristics and measuring earth resistance. A measurement approximating an accurate value of earth resistance can be performed even when soil composition characteristics are unknown at a site. | 10-30-2008 |
Sangsu Lee, Daejeon-City KR
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20090146141 | METHOD FOR MANUFACTURING N-TYPE AND P-TYPE CHALCOGENIDE MATERIAL, DOPED HOMOJUNCTION CHALCOGENIDE THIN FILM TRANSISTOR AND METHOD OF FABRICATING THE SAME - The present invention provides a doped homojunction chalcogenide thin film transistor and a method of fabricating the same, comprising forming an N-type chalcogenide layer constituting a channel layer on a substrate, forming and patterning a diffusion prevention layer on the upper part of the N-type chalcogenide layer, and forming a P-type chalcogenide layer constituting source and drain regions by depositing and diffusing Te alloy on the N-type chalcogenide layer. With the present invention, a thin film transistor can be fabricated using chalcogenide material having N-type conductivity and chalcogenide material having P-type conductivity. | 06-11-2009 |
Sa-Won Lee, Daejeon-City KR
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20080260850 | Delivery System For Bioactive Agents on the Basis of a Polymeric Drug Carrier Comprising an Amphiphilic Block Polymer and a Polylacticacid Derivative - Delivery system for bioactive agents on the basis of a polymeric drug carrier formed from compositions comprising an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block having a terminal hydroxyl group substituted with a tocopherol or cholesterol group, and a polylactic acide derivative wherein one end of the polylactic acid is covalently bound to at least one carboxyl group. The carboxyl group of the polylactic acid derivative may be fixed with a di- or trivalent metal ion, which is obtained by adding the di- or trivalent metal ion to the polymeric composition. | 10-23-2008 |
Sok-Kyu Lee, Daejeon-City KR
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20090290654 | APPARATUS FOR TRANSMITTING AND RECEIVING DATA TO PROVIDE HIGH-SPEED DATA COMMUNICATION AND METHOD THEREOF - In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used. | 11-26-2009 |
20100037119 | APPARATUS AND METHOD FOR UPDATING CHECK NODE OF LOW-DENSITY PARITY CHECK CODES - An apparatus and method for updating a check node of a low-density parity check (LDPC) code in order to decode the LDPC code are provided. The method includes the operations of: (a) obtaining a first bit of a first minimum value among input values, the number of input values being equal to the number of degrees of the check node, by performing an AND operation on first bits of the input values, the first bits being most significant bits of the input values; (b) obtaining result values by switching and sequentially performing an XOR operation and an OR operation on the first bit of the first minimum value and each of the first bits of the input values; and (c) performing operations (a) and (b) on the result values set as input values and performing operations (a) and (b) a number of times corresponding to the number of bits of each input value, that is, repeating until last bits are set as input values, to thereby obtain the first minimum value, the last bits being least significant bits of the input values. Accordingly, the complexity of hardware is reduced, and super high-speed processing is possible. | 02-11-2010 |
20100278280 | Apparatus for transmitting and receiving data to provide high-speed data communication and method thereof - In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used. | 11-04-2010 |
20100325511 | METHOD OF GENERATING PARITY-CHECK MATRIX, ENCODING/DECODING METHOD FOR LOW DENSITY PARITY-CHECK CODE WITH VARIABLE INFORMATION LENGTH AND VARIABLE CODE RATE AND APPARATUS USING THE SAME - A method of generating a parity-check matrix of a low density parity-check (LDPC) code with a variable information length and a variable code rate, an encoding/decoding method, and an apparatus using the same are provided. The method of generating a parity-check matrix of an LDPC code includes: a first parity-check matrix generation process of generating a first parity-check matrix constructed with a first information block and a parity block; and an m-th parity-check matrix generation process of generating an m-th parity-check matrix by an m-th information block to a generated (m−1)-th parity-check matrix (112-23-2010 | |
20120121040 | Apparatus for Transmitting and Receiving Data to Provide High-Speed Data Communication and Method Thereof - In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used. | 05-17-2012 |
20120294296 | PREAMBLE CONFIGURING METHOD IN THE WIRELESS LAN SYSTEM, AND A METHOD FOR A FRAME SYNCHRONIZATION - A method of configuring a preamble of a downlink frame for synchronization in data frame transmission of a 60 GHz a wireless local area network system, the method comprising arranging a short preamble having a plurality of repetitive S symbols, and an IS symbol, and arranging a long preamble having a long cyclic prefix (CP) and a plurality of L symbols for frame synchronization and symbol timing by performing auto-correlation according to the length of window of the auto-correlation. | 11-22-2012 |
Soocheol Lee, Daejeon-City KR
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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 |
20100182141 | ADAPTIVE INTERFACE PROVIDING APPARATUS AND METHOD - An adaptive interface providing apparatus and method of setting an individual degree of attention for a specific driver based on an average degree of attention are provided. The adaptive interface providing apparatus includes a statistics database unit which analyze a predetermined statistical population, extracts a context feature including an average degree of attention required when a driving operation, a state of a car, or an external environment changes, a degree of attention required for interface manipulation when a driver manipulates interfaces of a car, and a similarity between the functions of the interfaces using at least one of a sensor, an RFID, and a GPS and stores and manages the context feature; an adjusting unit which senses a change in at least one of the driving operation, the state of a car, and the external environment using at least one of the sensor, the RFID, and the GPS and adjusts an individual degree of attention based on the extracted context feature and the average degree of attention according to the sensed change; and a safety determining unit which determines whether or not a sum of the individual degree of attention and the degree of attention required for interface manipulation when the driver manipulates the interfaces is larger than a predetermined threshold degree of safety attention required for safe driving. | 07-22-2010 |
Soohyung Lee, Daejeon-City KR
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20100143890 | PEPTIDE COMPOUNDS FOR CAPTURING OR INHIBITING AVIAN INFLUENZA VIRUS AND APPLICATION THEREOF - Disclosed herein are peptide, particularly dipeptide compounds and the application thereof to the detection or inhibition of AI virus. The peptide compounds are more stable and easier to synthesize and store than are antibodies. In addition, having strong binding forces for the H5 protein of AI virus, the peptide compounds are useful as capturers or inhibitors of AI virus. | 06-10-2010 |
Soo Jeon Lee, Daejeon-City KR
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20100030606 | MISSION SCHEDULING METHOD - Provided is a mission scheduling method. The mission scheduling method includes: when a time window representing a time range that a plurality of missions are executed and a duration of the missions are given, determining an execution start time and finish time of each of the missions; selecting a first mission that is first finished among the missions; selecting second missions which collide or do not collide with the first mission depending on the execution order of the second missions; and including in a schedule a mission that is first finished when the first mission and the second missions are respectively executed according to a combination of orders, wherein the first mission and the second missions according to the combination of orders do not collide with each other. | 02-04-2010 |
Soon Seok Lee, Daejeon-City KR
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20090100179 | METHOD OF CONTROLLING RESOURCES USING OUT-OF-BAND SIGNALING - Provided is a method of controlling resources using out-of-band signaling. A central admission entity checks subscription information of a user requesting resources and policies of a network for call setting, determines whether the resources are to be assigned, and distributes an IP-level flow descriptor to an edge node of the network in order to assign the resources. The edge node receiving the IP-level flow descriptor performs mapping of the IP-level flow descriptor to flow state aware (FSA) parameters, and generates a start node. Thus, a process of in-band signaling can be simplified by omitting respond and reconfirm operations. | 04-16-2009 |
20100020796 | METHOD AND APPARATUS FOR BLOCKING FORGED MULTICAST PACKETS - Provided are a method and apparatus for blocking forged multicast packets. The apparatus includes input and output ports connected to user terminals; a forwarding process unit transferring a frame input through one of the input ports to one of the output ports connected to a user terminal having a destination address; a determination unit determining an address of a user terminal connected to one of the input ports from a source address included in the frame; a filtering database storing information on the output port connected to the user terminal having the destination address of the frame based on information received from the determination unit; a multicast gate information unit including information on multicast media access control (MAC) addresses of frames providing a monodirectional multicast service and blocking or forwarding all frames having a corresponding multicast MAC address as the destination address by checking whether the input and output ports are connected to an Internet group management protocol (IGMP) querier or not; and a port information transference unit learning the multicast MAC address of the IGMP querier connected to the apparatus, obtaining information on a port having the multicast MAC address as the destination address from the filtering database, and transferring the information to the multicast gate information unit. According to the present application, forged traffic is blocked from being multicasted and thus restricted resources of a network are prevented from being wasted. As a result, the network may be used more efficiently in an industrial field. | 01-28-2010 |
20100046513 | SYSTEM FOR AND METHOD OF PROVIDING IPTV SERVICE IN NEXT GENERATION NETWORK - A system for and a method of providing IPTV service in a next generation network are provided. The system includes a service control unit, a transmission control unit, and an L | 02-25-2010 |
20100131325 | NETWORK RESOURCE CONTROL METHOD AND APPARATUS FOR GUARANTEEING ADMISSION RATE OF HIGH-PRIORITY SERVICE - Provided are a network resource control method and apparatus for guaranteeing an admission rate of a high-priority service. In the method and apparatus, the admission rate of the high-priority service is increased by differentiating between the high-priority service and a low-priority service by either rejecting the low-priority service or reducing a bandwidth allocated to the low-priority service when the low-priority service has already been accepted. | 05-27-2010 |
20100157902 | METHOD AND SYSTEM OF PROVIDING MULTIMEDIA SERVICE IN IP NETWORK - Provided are a method and system of providing a multimedia service in an information provider (IP) network, wherein the method is performed by a system of providing an IP-based mobile service. The method includes: detecting whether a user, who is being provided with the multimedia service, changed from a first terminal to a second terminal; obtaining characteristic information of the second terminal; and providing the multimedia service after changing the multimedia service according to the obtained characteristic information. When only a terminal changes and an access network does not change, or when only an access network changes and a terminal does not change, a network automatically recognizes characteristics of the terminal and the access network and automatically changes media according to the recognized characteristics. Accordingly, a multimedia service without quality deterioration is received, and moreover, a service that can satisfy characteristics (capacity, size of display, etc.) of a terminal of a user and a corresponding service level agreement (SLA) of the user are provided in various terminal environments. | 06-24-2010 |
Sung Q Lee, Daejeon-City KR
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20090121585 | THIN FILM TYPE INTEGRATED ENERGY HARVEST-STORAGE DEVICE - Provided is thin film type energy generation-storage device in which an energy generation device generating energy using a piezoelectric material and an energy storage device storing the generated energy are formed in a thin film type one unit. | 05-14-2009 |
20090218648 | NEAR-FIELD OPTICAL PROBE BASED ON SOI SUBSTRATE AND FABRICATION METHOD THEREOF - Provided is near-field optical probe including: a cantilever arm support portion that is formed of a lower silicon layer of a silicon-on-insulator (SOI) substrate, the cantilever arm support portion having a through hole formed therein at a side of the lower silicon layer; and a cantilever arm forming of a junction oxidation layer pattern and an upper silicon layer pattern on the SOI substrate that are supported on an upper surface of the lower silicon layer and each have a smaller hole than the through hole, a silicon oxidation layer pattern having a tip including an aperture at a vertical end, corresponding with the hole on the upper silicon layer pattern, and an optical transmission prevention layer that is formed on the silicon oxidation layer pattern and does not cover the aperture. | 09-03-2009 |
Wangjoo Lee, Daejeon-City KR
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20100033178 | METHOD AND APPARATUS FOR DETECTING OR TRANSMITTING MAGNETIC FIELD USING DETACHABLE MAGNETIC RESONATOR - An apparatus for detecting a magnetic field includes a coil type magnetic resonator having a resonant frequency with respect to a magnetic field varying at a particular frequency and a loop antenna inductively coupled to the coil type magnetic resonator. | 02-11-2010 |
20100127707 | WEARABLE MAGNETIC RESONATOR FOR MRI RESOLUTION IMPROVEMENT, AND APPLICATION DEVICE INCLUDING THE SAME - Magnetic resonance imaging (MRI) devices detect a magnetic field having a particular frequency induced by hydrogen nuclei included in a human body and convert the detected magnetic field into two- or three-dimensional images, thereby visualizing the internal structure of the human body without causing any harm to the human body. The higher the resolution of an MRI technique, the more accurate a diagnosis can be obtained. Thus, various methods are introduced to improve resolutions. For example, a wearable magnetic resonator and an application device including the wearable magnetic resonator are provided. The wearable magnetic resonator is flexible and used to improve MRI resolution by amplifying MR signals while being attached to a human body to amplify MR signals when MRI is performed. The wearable magnetic resonator includes the following: a dielectric thin film that is flexible; and a conductor thin film that is disposed to have a split ring resonator (SRR) structure on the dielectric thin film and is flexible, wherein the wearable magnetic resonator includes an inductance component and a capacitance component, and the wearable magnetic resonator amplifies a magnetic field by resonating at a predetermined frequency, thereby improving a MRI resolution. | 05-27-2010 |
20100259345 | METAMATERIAL STRUCTURE HAVING NEGATIVE PERMITTIVITY, NEGATIVE PERMEABILITY, AND NEGATIVE REFRACTIVITY - Provided is an unlimited single-layer metamaterial structure having negative permittivity and negative permeability in a frequency bandwidth desired by a user. The metamaterial structure includes: a dielectric having a single layer structure having a permittivity or a multi-layer structure in which at least one layer has a different permittivity; and a single conductor disposed in the dielectric, wherein the metamaterial structure has a permittivity, a permeability, and a refractivity that have 0 or a negative value in a predetermined frequency band. | 10-14-2010 |
20110175779 | CONDUCTIVE STRUCTURE FOR HIGH GAIN ANTENNA AND ANTENNA - Provided are a conductive structure for a high gain antenna and an antenna. A plurality of conductive patterns (512) of the conductive structure are formed on top and bottom surfaces of a dielectric substrate (511) positioned above the antenna and separated from an antenna body (500). A conductive upper structure of the antenna (510) is positioned above the antenna opposite to a ground plane (530) to which the antenna body is fed, separated from the antenna body. A conductive unit structure comprising a plurality of conductive patterns (512) formed on top and bottom surfaces of the dielectric substrate (511) is arranged in a plurality of layers. The conductive structure for a high gain antenna and the antenna can be readily produced by using low cost printed circuit board (PCB) technology, and a gain of the antenna can be increased regardless of a resonance distance between the ground plane of the antenna and the conductive structure disposed above the antenna. | 07-21-2011 |
20110199273 | PLANAR META-MATERIAL HAVING NEGATIVE PERMITTIVITY, NEGATIVE PERMEABILITY, AND NEGATIVE REFRACTIVE INDEX, PLANAR META-MATERIAL STRUCTURE INCLUDING THE PLANAR META-MATERIAL, AND ANTENNA SYSTEM INCLUDING THE PLANAR META-MATERIAL STRUCTURE - Provided is a planar meta-material ( | 08-18-2011 |
Wang Joo Lee, Daejeon-City KR
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20100092180 | HIGH POWER EFFICIENCY OPTICAL-WIRELESS TRANSMITTER - Provided is a high power efficiency optical-wireless transmitter capable of solving problems of low power efficiency, signal distortion due to non-linearity of output, large number of connection terminals, and non-uniformity of optical power intensities of optical sources. The high power efficiency optical wireless transmitter includes: an amplitude-to-array coder converting an amplitude of an electric signal input from a baseband modulator into optical source control signals so as to generate an optical output power corresponding to the electric signal; optical source driver groups driving optical sources based on the optical source control signals of the amplitude-to-array coder; and MMRS (modified mixed radix system) or MMRR (modified mixed radix system with Redundancy) optical source group driven by the optical source driver groups to generate various optical power intensities. | 04-15-2010 |
20100277374 | ANTENNA HAVING METAMATERIAL SUPERSTRATE AND PROVIDING GAIN IMPROVEMENT AND BEAMFORMING TOGETHER - Provided is antenna having metamaterial and providing gain improvement and beamforming together. The antenna includes a resonator and a superstrate. A feed antenna is disposed in the resonator. The superstrate includes a conductive pattern on the resonator for improving gain and beamforming of the feed antenna. | 11-04-2010 |
Won Kyoung Lee, Daejeon-City KR
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20100054251 | METHOD OF PROCESSING PACKET FOR IMPROVING PERFORMANCE OF ETHERNET SWITCH - Provided is a method of processing a packet for improving performance of an Ethernet switch. According to the present invention, a routine of searching a virtual local area network (VLAN) table by a decapsulation microblock and a bridge microblock may be performed by a core component when a core component generates tables and thus the number of memory accesses may be reduced. Also, VLAN port state information of an input port and VLAN port tagging information of an output port may be stored in metadata and may be transmitted to a next microblock. Accordingly, a duplicate memory access routine of the bridge microblock and an encapsulation microblock may be removed and thus an access time delay may be reduced, thereby improving performance of an Ethernet switch. | 03-04-2010 |
Woosin Lee, Daejeon-City KR
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20100039981 | HANDOVER METHOD USING RELAY STATION HAVING HANDOVER CONTROL FUNCTION AND MULTI-HOP RELAY SYSTEM - Provided are a handover method using a relay station having a handover control function and a multi-hop relay system. When handover of mobile stations connected to a relay station is required, the relay station negotiates handover of the mobile stations with a base station by exchanging a handover request message and a handover response message. Upon execution of handover of the mobile stations, the relay station collects handover results of the mobile stations and transmits the handover results to the base station. The base station then updates information about the handed-over mobile stations. | 02-18-2010 |
20100087196 | METHOD OF DEREGISTERING RELAY STATION AND MULTI-HOP RELAY SYSTEM FOR THE METHOD - A method of deregistering a relay station and a multi-hop relay system for the method are provided. In order to deregister the relay station, a base station ends a handover of mobile stations connected to the relay station, and informs the relay station accordingly. When the handover of the mobile stations is ended, the relay station performs a deregistration procedure. Messages that already exist are used as messages necessary for the method. | 04-08-2010 |
Yong-Gwan Lee, Daejeon-City KR
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20080258836 | Impedance matching methods and systems performing the same - Provided are an impedance matching method and a matching system performing the same. The method includes: measuring an electrical characteristic of the power transmission line including the matching system and the load; extracting a control parameter for impedance matching from the electrical characteristic of the power transmission line; and controlling the matching system by using the control parameter. The extracting of the control parameter comprises utilizing an analytic coordinate system that quantitatively relates the electrical characteristic of the matching system to the electrical characteristic of the power transmission line. | 10-23-2008 |
20120013416 | IMPEDANCE MATCHING METHODS AND SYSTEMS PERFORMING THE SAME - Provided are an impedance matching method and a matching system performing the same. The method includes: measuring an electrical characteristic of the power transmission line including the matching system and the load; extracting a control parameter for impedance matching from the electrical characteristic of the power transmission line; and controlling the matching system by using the control parameter. The extracting of the control parameter comprises utilizing an analytic coordinate system that quantitatively relates the electrical characteristic of the matching system to the electrical characteristic of the power transmission line. | 01-19-2012 |
Yongju Lee, Daejeon-City KR
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20100005273 | METHOD FOR SELECTING NODE IN NETWORK SYSTEM AND SYSTEM THEREOF - The present invention relates to a method for selecting a node in a network system and a system thereof. The method performs a writing operation on a majority of the nodes included in at least one cell selected by dividing a network area including a plurality of nodes existing on a large-capacity cluster into a plurality of cells and performs a reading work on the majority of the nodes included in the cells selected by selecting predetermined cells of the divided cells. The present invention minimizes the accessibility of the network by binding the adjacent nodes to form the cells and access to each cell and optimizes hierarchy for the network access by selecting the node for each cell, thereby making it possible to minimize the network access cost. | 01-07-2010 |
Yoo-Kyoung Lee, Daejeon-City KR
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20100039943 | FRAME LOSS MEASUREMENT APPARATUS AND METHOD FOR MULTICAST SERVICE TRAFFIC - An apparatus and method for measuring frame loss in multicast service traffic are provided. The method of measuring frame loss includes: counting the number of data frames of a predetermined multicast service flowing into an object network of frame loss measurement; counting the number of data frames of the predetermined multicast service flowing out of the network; and measuring frame loss by comparing the counted number of incoming frames and the counted number of outgoing frames. According to the method and apparatus, in a multicast service environment which is dynamically changing, frame loss of a predetermined multicast service can be conveniently and easily measured. | 02-18-2010 |
Yoon Hee Lee, Daejeon-City KR
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20110202163 | PLANT PROTECTION SYSTEM AND METHOD USING FIELD PROGRAMMABLE GATE ARRAY - Provided is a plant protection system, which determines initiation of protective actions for the plant, and more particularly to the plant protection system including four channels which controls systems that shut down the plant or mitigate consequences of abnormal conditions of the plant by detecting non-permissible plant conditions with the result of bistable logic comparing process parameters with their setpoints assigned to each channel. Accordingly, common mode failure and cyber security vulnerability caused by software are removed since the system is composed of FPGA and other types of hardware without central processing units and software in determining the initiation of plant protective actions. | 08-18-2011 |
Young-Ha Lee, Daejeon-City KR
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20080305804 | Method and Apparatus for Uplink Timing Synchronization with Ranging Signal in Mobile Communication System - When a base station of a time division duplex based mobile communication system receives an initial ranging request signal from a subscriber station, the base station generates initial ranging information including delay time information to the subscriber station, and receives uplink data delayed and transmitted using a delay time from the subscriber station. Also, when the subscriber station transmits an initial ranging request signal to the base station and receives initial ranging information including delay time information from the base station, the subscriber station establishes a transmission parameter value by using the transmission parameter value included in the initial ranging information and transmits uplink data by using the established delay time. | 12-11-2008 |
20090225704 | UPLINK TILE INDEX GENERATION APPARATUS AND A UPLINK SUBCHANNEL ALLOCATION APPARATUS OF AN OFDMA SYSTEM - A tile index generation apparatus for allocating subchannels of a control channel and a diversity channel, a subchannel allocation apparatus for allocating subchannels of a diversity channel, and a subchannel allocation apparatus for allocating subchannels of an adaptive modulation coding (AMC) channel, which are used for an uplink of an orthogonal frequency division multiplexing access (OFDMA) system, are provided. With these subchannel allocation apparatuses, optimum designs for the uplink subchannel allocation in the OFDM scheme can be provided to a modulator of a subscriber station and a demodulator of a base station, and so the uplink subchannel allocation apparatus has a simple structure and an enhanced transmission speed. | 09-10-2009 |
20100061223 | SUBCARRIER ALLOCATION APPARATUS AND METHOD, SUBCARRIER DE-ALLOCATION APPARATUS AND METHOD IN OFDM SYSTEM - A subcarrier allocating apparatus allocating data to be transmitted to a plurality of orthogonal subcarriers in an orthogonal frequency division multiplexing (OFDM) system, the apparatus including: a logical index generator ( | 03-11-2010 |
Youngki Lee, Daejeon City KR
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20090209349 | PREDICTION OF NETWORK PATH QUALITY AMONG PEER NETWORKING DEVICES - The claimed subject matter provides a system and/or a method that facilitates connectivity within a peer-to-peer networking environment. A client can transmit a request to connect with a host for peer-to-peer networking. A server can generate a list that includes at least one host that matches the request from the client. A predictor engine can reduce the list by at least one matched host based upon a predictor, wherein the predictor is at least one of an Internet Protocol history predictor, a prefix history predictor, or a geography predictor. | 08-20-2009 |
Young Sup Lee, Daejeon City KR
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20100141090 | ACOUSTIC SENSOR WITH PIEZO-ARRANGEMENT FILM - Provided is an acoustic sensor for measuring a sound wave propagating through a gas such as air or a fluid such as water and an elastic wave propagating through a solid medium, and more particularly, an acoustic sensor with a piezo-arrangement film capable of detecting frequencies in a broad band or amplifying a signal at a specific frequency by comparting a waveguide into an upper waveguide and a lower waveguide by means of a compartment diaphragm and arranging piezoelectric sensors on the compartment diaphragm in several forms. The acoustic sensor can be utilized as a resonant acoustic sensor in which the piezoelectric sensors are arranged on the compartment diaphragm in the same form so that a signal at a specific frequency overlaps for high sensibility or a broadband acoustic sensor in which the piezoelectric sensors are arranged in a different form to detect frequencies in a broad band. The sensor for measuring an acoustic wave includes a waveguide including a vibrating membrane for receiving the acoustic wave, an emitting membrane for emitting the acoustic wave, and a propagation medium filled therein for propagating the acoustic wave received by the vibrating membrane; a compartment diaphragm for computing the waveguide into an upper waveguide and a lower waveguide; an omni-directional endpoint processing unit formed at an end of the waveguide for absorbing the acoustic wave received by the vibrating membrane; and a plurality of piezoelectric sensors formed on the compartment diaphragm for detecting the acoustic wave. | 06-10-2010 |