Lee, Gyeonggi
Byung-Joo Lee, Gyeonggi KR
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20090009426 | Display device - A display device includes a display panel including first to fourth pixels in a first direction, wherein each of the first to fourth pixels has a first width in the first direction and a length more than the width and in a second direction; and a backlight unit including first and second line light regions supplying light to the display panel to display three-dimensional images, wherein the first and second line light regions have a slanted angle with respect to the second direction, wherein light from the first line light region comes to right and left eyes of a viewer through the first and second pixels, respectively, and light from the second light region comes to the right and left eyes through the third and fourth pixels, respectively, wherein the display device has K view points. | 01-08-2009 |
Chang Woo Lee, Gyeonggi KR
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20110286910 | Method Of Preparing Carbon Substrate For Gas Diffusion Layer Of Polymer Electrolyte Fuel Cell, Carbon Substrate Prepared By Using The Method, And System For Manufacturing The Same - A carbon substrate, method, and a system for manufacturing the same. The method includes forming an oxidized carbon precursor fiber preweb comprising oxidized carbon precursor staple fibers and binder staple fibers; impregnating the oxidized carbon precursor fiber preweb with a slurry including a thermosetting resin and carbonaceous fillers and drying the resulting preweb to obtain an oxidized carbon precursor fiber web; applying heat and pressure to the oxidized and impregnated carbon precursor fiber web, to cure the thermosetting resin and press the oxidized carbon precursor fiber web; and heating the oxidized carbon precursor fiber web in an inert atmosphere, thereby stabilizing and carbonizing the oxidized carbon precursor staple fibers to obtain a carbon substrate. The present invention may utilize a combination of carbon precursor staple fibers in an oxidized form with low ductility and high stiffness; and binder staple fibers composed of a polymer resin. | 11-24-2011 |
Eun Sook Lee, Gyeonggi KR
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20110286910 | Method Of Preparing Carbon Substrate For Gas Diffusion Layer Of Polymer Electrolyte Fuel Cell, Carbon Substrate Prepared By Using The Method, And System For Manufacturing The Same - A carbon substrate, method, and a system for manufacturing the same. The method includes forming an oxidized carbon precursor fiber preweb comprising oxidized carbon precursor staple fibers and binder staple fibers; impregnating the oxidized carbon precursor fiber preweb with a slurry including a thermosetting resin and carbonaceous fillers and drying the resulting preweb to obtain an oxidized carbon precursor fiber web; applying heat and pressure to the oxidized and impregnated carbon precursor fiber web, to cure the thermosetting resin and press the oxidized carbon precursor fiber web; and heating the oxidized carbon precursor fiber web in an inert atmosphere, thereby stabilizing and carbonizing the oxidized carbon precursor staple fibers to obtain a carbon substrate. The present invention may utilize a combination of carbon precursor staple fibers in an oxidized form with low ductility and high stiffness; and binder staple fibers composed of a polymer resin. | 11-24-2011 |
Ja-Young Lee, Gyeonggi KR
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20080296670 | Semiconductor Devices Including Transistors Having a Recessed Channel Region and Methods of Fabricating the Same - Some embodiments of the present invention provide semiconductor devices including a gate trench in an active region of a semiconductor substrate and a gate electrode in the gate trench. A low-concentration impurity region is provided in the active region adjacent to a sidewall of the gate trench. A high-concentration impurity region is provided between the low-concentration impurity region and the sidewall of the gate trench and along the sidewall of the gate trench. Related methods of fabricating semiconductor devices are also provided herein. | 12-04-2008 |
Jinkoo Lee, Gyeonggi KR
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20110083937 | PASSENGER CONVEYOR HANDRAIL DRIVE - A passenger conveyor ( | 04-14-2011 |
Kang Min Lee, Gyeonggi KR
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20080292015 | Channel Estimation Method of Mobile Terminal in Wireless Communication System and Channel Estimator Employing the Method - Provided is a mobile terminal of a wireless communication system, and more particularly, a channel estimation method performed in a mobile terminal of a wireless communication system supporting the IEEE 802.16e standard and a channel estimator of the mobile terminal to which the method is applied. The channel estimation method includes the steps of: extracting a preamble included in a received signal and obtaining a preamble estimation value based on the preamble; extracting a pilot included in the received signal and obtaining a pilot estimation value based on the pilot; and obtaining a channel estimation value based on calculating the preamble estimation value and the pilot estimation value according to a predetermined algorithm. | 11-27-2008 |
20080299983 | Apparatus and Method For Measuring Carrier-To-Interference-and-Noise Ratio Using Downlink Preamble - Provided are an apparatus and method for measuring a carrier-to-interference-and-noise ratio (CINR) using a downlink preamble in a digital communication system. More particularly, provided are an apparatus and method that measure CINRs using preambles of received signals respectively corresponding to a plurality of cells or sectors and perform handover and reverse power control using the CINRs in a digital communication system employing an orthogonal frequency division multiplexing (OFDM) technique or orthogonal frequency division multiple access (OFDMA) technique. According to the apparatus and method, it is possible to easily measure CINRs and perform handover and reverse power control using the measured CINRs. Therefore, deterioration in performance can be reduced even in a poor channel environment by maintaining a CINR received by a base station at an appropriate level. | 12-04-2008 |
20080303508 | Apparatus and Method for Estimating Carrier Frequency Offset in Communication Terminal, and Communication Terminal for Performing the Method - Provided are an apparatus and method for estimating carrier frequency offset in a communication terminal operating in a communication system supporting Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiplexing Access (OFDMA). More particularly, provided are a method of estimating carrier frequency offset in a communication terminal supporting DownLink (DL) Full Usage of SubChannel (FUSC) and DL Band-Adaptive Modulation and Coding (AMC) channel modes in a wireless communication system based on one of Institute of Electrical and Electronic Engineers (IEEE) 802.16 | 12-11-2008 |
20090003479 | Method and Device for Estimating Channel of Uplink Signal in Wireless Communication System - Provided are a method and device for estimating a channel in a wireless communication system, and more particularly, a method of estimating a channel of an uplink signal in an orthogonal frequency division multiplexing (OFDM)/orthogonal frequency division multiple access (OFDMA) communication system supporting the Institute of Electrical and Electronics Engineers (IEEE) 802.16d/e standards and a channel estimation device employing the method. The method includes the steps of: extracting pilot symbols included in the received signal and estimating linear phase values using the pilot symbols; interpolating the pilot symbols along a time axis and obtaining first channel responses; interpolating the pilot symbols along a frequency axis according to the first channel responses and obtaining second channel responses; and calculating channel estimation values using the second channel responses and the linear phase values. | 01-01-2009 |
20090016420 | APPARATUS AND METHOD FOR MEASURING CARRIER TO INTERFERENCE AND NOISE RATIO - Provided are an apparatus and method for measuring a carrier-to-interference and noise ratio (CINR) using a pilot symbol in a digital communication system, and more particularly, to an apparatus and method for measuring a CINR by estimating a data signal, noise, and an interference signal from a pilot symbol in a digital communication system using orthogonal frequency division multiplexing (OFDM)/orthogonal frequency division multiplexing access (OFDMA). The apparatus includes: a pilot symbol acquisition unit for acquiring the pilot symbol from a baseband frequency signal; a signal estimation unit for estimating a pilot signal and a data signal from the pilot symbol; a power calculation unit for calculating a power value of the estimated data signal and calculating a power value of a noise signal from a difference between the pilot symbol and an estimated pilot signal; and a CINR calculation unit for calculating a CINR on the basis of the power values of the data and noise signals. Thus, a pilot symbol is used for more easily and precisely measuring a CINR of a received signal, and scheduling of a base station and transmission power control of a terminal are performed on the basis of the measured CINR. | 01-15-2009 |
Kwang-Ii Lee, Gyeonggi KR
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20100202170 | Soft-Burst Circuit For Switched-Mode Power Supplies - A switched-mode power supply includes a soft-burst circuit to minimize or prevent distracting audible noise. The power supply includes a control circuit for controlling switching of an output transistor to deliver a regulated output voltage to a load. The control circuit adjusts the operating frequency of the power supply based on a control signal. The soft-burst circuit discharges a storage device to minimize or prevent audible noise when the control signal reaches a particular level. | 08-12-2010 |
Min Sung Lee, Gyeonggi KR
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20120001440 | WIND POWER GENERATOR - A wind power generator, which minimizes vortexes formed on a disc, thus efficiently rotating the disc, and which has blade type cells capable of increasing wind power, and which reduces friction load of a rotating shaft induced by the weight of the rotating shaft having blades, thus more efficiently rotating the rotating shaft, and which provides protection against a length of the rotating shaft varying according to weather conditions. The wind power generator includes a rotating shaft supported by upper and lower bearing units, a disc mounted on the rotating shaft and first, second and third wind collectors provided on upper and lower surfaces of the disc, with respective holes formed through the disc. The upper bearing unit includes an adjusting bolt having a first ball, a first bearing supporting the first ball and an adjusting nut. The lower bearing unit includes a second bearing and a second ball supported by the second bearing. | 01-05-2012 |