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Kwak, Incheon
Jin Won Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100087676 | ENVIRONMENTALLY BENIGN AND SIMPLIFIED METHOD FOR PREPARATION OF AROMATIC DICARBOXYLIC ACID - Disclosed is an environmentally benign and simplified method for preparing aromatic dicarboxylic acid. In the disclosed method, a mixed solvent composed of aromatic mono-carboxylic acid and water, instead of conventionally used low molecular weight carboxylic acid such as acetic acid, is used as a reaction solvent for an oxidation process; manganese and a small amount of transition metal element are used as catalysts; and carbon dioxide is used as a reaction stabilizer. Accordingly, it is possible to improve the yield and selectivity of the aromatic dicarboxylic acid. | 04-08-2010 |
Joung-Uk Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100197059 | ARRAY SUBSTRATE FOR LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - An array substrate for a liquid crystal display device includes a substrate having a display area and a driving circuit area, a first semiconductor layer formed on the substrate in the display area, the first semiconductor layer having an active region and source and drain regions at opposing sides of the active region, a gate insulating layer formed on the first semiconductor layer, a gate electrode formed on the gate insulating layer and over the active region, the gate electrode being wider than the gate insulating layer, and an interlayer insulating layer formed over the substrate including the gate electrode, wherein the interlayer insulating layer, the gate electrode, the gate insulating layer, and the active region define a first cavity. | 08-05-2010 |
Kyoung Seop Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090029658 | ULTRA-WIDEBAND RANGING METHOD AND SYSTEM USING NARROWBAND INTERFERENCE SUPRESSION WAVEFORM - Disclosed herein is an Ultra-WideBand (UWB) ranging method using a narrowband interference suppression waveform. A transmission signal is transmitted to a target object. The transmission signal, reflected from the target object, is received. A template signal is generated by combining the narrowband interference suppression waveform and a channel estimation signal together. A correlation output signal is generated by convoluting the template signal and the received signal. A distance is calculated using a time delay when the correlation output signal has the maximum value thereof. The narrowband interference suppression waveform is any one of two waveforms that are expressed by the following Equation: | 01-29-2009 |
Kyungsup Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080276093 | SERVICE MOBILITY MANAGEMENT SYSTEM USING XML SECURITY AND THE METHOD THEREOF - A system for managing service mobility using an extensible Markup Language (XML) electronic signature. A mobility interface stops and stores the operation of a service being currently performed. Before the service is moved, a service serializer serializes service state information and converts it into an XML form which is attachable to an electronic signature. An XML security manager creates an XML electronic signature for the Manifest file of the Java ARchive (JAR) file of a service bundle, attaches the serialized service state information to the XML electronic signature, and records it. A service installer transmits the signed JAR file to an Open Service Gateway initiative (OSGi) framework that has requested that the service be moved. | 11-06-2008 |
| 20090154625 | JOINT ESTIMATION APPARATUS OF CHANNEL AND FREQUENCY OFFSET BASED ON MULTIBAND-ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING AND THEREOF - The present invention relates, in general, to a joint channel and frequency offset estimation apparatus and method based on a multi-band-orthogonal frequency division multiplexing system, and, more particularly, to a joint channel and frequency offset estimation apparatus and method based on an MB-OFDM system, which uses low-rank LMMSE channel estimation, in which a low-rank is applied to the MB-OFDM system, thus decreasing complexity, and adds a simple structure using the autocorrelation characteristics of an estimated channel, thus joining channel estimation to frequency offset estimation at low complexity. | 06-18-2009 |
| 20110107075 | NETWORK DEVICE AND NETWORK CONTROL DEVICE IN WIRELESS BODY AREA NETWORK, AND SECURE WAKE-UP METHOD AND WAKE-UP AUTHENTICATION CODE GENERATION METHOD OF NETWORK DEVICE AND NETWORK CONTROL DEVICE - A network device and a network control device in a Wireless Body Area Network (WBAN), and a secure wake-up method and a wake-up authentication code (WAC) generation method of the network device and the network control device are provided. The network device includes a wake-up circuit to receive a wake-up radio signal from a network control device using a Radio-Frequency Identification (RFID) receiver, to compare a WAC contained in the received wake-up radio signal with a WAC stored in advance, and to determine whether to wake up a main circuit unit, the network control device being contained in the WBAN; and the main circuit unit to be woken up in response to an interrupt signal from the wake-up circuit. | 05-05-2011 |
Kyung Sup Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090262010 | UWB DISTANCE MEASUREMENT SYSTEM AND METHOD OF DRIVING THE SAME - The present invention relates to a UWB distance measurement system and method of driving the system. The system includes a reception antenna for receiving a signal, which is output from a transmission unit, is reflected from a target and is incident on the reception antenna, a UWB amplifier for amplifying the received signal and generating a first signal, a reference waveform generator for generating a reference waveform which is a reference for analysis of the first signal, a window function generator for generating at least one window function that is applied to the first signal, a correlator for correlating the first signal with the window function output from the window function generator, and generating a second signal which is a revised frequency response of the first signal, and a delay time detector for detecting a delay time component in the second signal. | 10-22-2009 |
Nho-Kwon Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090120918 | Apparatus and Method for Manufacturing Absorption Pad - Disclosed are an apparatus and a method for manufacturing an absorption pad used for picking up a package or a strip during a semiconductor manufacturing process. The apparatus includes a workpiece transfer device on which a workpiece is mounted, a laser generator installed above the workpiece transfer device while being spaced apart from the workpiece transfer device by a predetermined distance, a driving unit for moving the workpiece transfer device and the laser generator relative to each other, and a controller for controlling the laser generator. It is possible to precisely form patterns having various sizes and shapes according to use of the absorption pad and the size of the package. Processing conditions for the workpiece are standardized, so that the processing time and manufacturing cost for the absorption pad are minimized. | 05-14-2009 |
| 20090311087 | Apparatus for picking up semiconductor package - Disclosed is a semiconductor package pickup apparatus. The apparatus includes a picker base formed with first and second main feeding holes, which are connected to each pneumatic line providing a pneumatic pressure and aligned in a dual-layer structure, and an adsorption pad coupled to a lower portion of the picker base and formed with adsorption holes connected to the first and second main feeding holes. The pneumatic pressure supplied into the first and second main feeding holes is independently controlled, so that the apparatus easily loads or picks up semiconductor packages, even if the size of the semiconductor packages becomes reduced. | 12-17-2009 |
Sung Sik Kwak, Incheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090246870 | DE-DIFFERENTIATION OF ASTROCYTES INTO NEURAL STEM CELL USING NANOG - Disclosed are a composition and a method for inducing the de-differentiation of astrocytes into neural stem cells using Nanog. The de-differentiated neural stem cells have the ability to differentiate into astrocytes, neurons, or oligodendrocytes. | 10-01-2009 |