Chul-Hee
Chul Hee Hong, Seoul KR
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20100326319 | WHITE RUST INHIBITING COMPOSITION FOR ALUMINUM PARTS - The present invention provides an aluminum white rust inhibiting composition containing alkali metal metasilicate and alkali metal hydroxide as essential components. The composition described by the present invention can provide an anti-corrosion function to vehicle aluminum parts without a separate surface process, thus reducing the manufacturing cost by reducing the number of processes and improving the durability of the vehicle aluminum parts. | 12-30-2010 |
Chul Hee Kang, Seoul KR
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20110158220 | MEDIA ACCESS CONTROL METHOD IN WIRELESS NETWORK - A media access control method in a wireless network is provided. Each of devices in the wireless network determines one of a plurality of beacon slots within a beacon period as a beacon slot of the device. The devices in the wireless network determine a data transmission order in accordance with the slot numbers of the beacon slots of the devices in a reserved period of a data transmission period. Data is transmitted in the unreserved period in accordance with the determined data transmission order. | 06-30-2011 |
20120076074 | APPARATUS AND METHOD FOR ESTABLISHING CONTENTION WINDOW IN WIMEDIA WIRELESS NETWORK - There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time. | 03-29-2012 |
20140003412 | APPARATUS AND METHOD FOR ESTABLISHING CONTENTION WINDOW IN WIMEDIA WIRELESS NETWORK | 01-02-2014 |
Chul Hee Lee, Goyang-Si KR
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20130128959 | APPARATUS FOR ENCODING/DECODING SAMPLED COLOR IMAGE ACQUIRED BY CFA AND METHOD THEREOF - Disclosed are apparatus and methods for encoding/decoding sampled color images acquired by using a CFA according to an exemplary embodiment of the present invention. An apparatus for encoding color images includes: an acquiring unit that acquires color images of a first color coordinate system; a conversion unit that converts the acquired color images of the first color coordinate system into color images of a second color coordinate system by treating a preset number of pixels as a unit; and an encoding unit that encodes the converted color images of the second color coordinate system to generate a compressed image. By this configuration, the present invention can convert color images into the YUV color coordinate system without interpolation of color images, reduce the data size increase caused by conversion into the YUV color coordinate system, and prevent reduced coding efficiency. | 05-23-2013 |
Chul Hee Ryu, Daejeon KR
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20150259522 | METHOD OF PREPARING A SUPER ABSORBENT POLYMER AND A SUPER ABSORBENT POLYMER PREPARED THEREFROM - A method of preparing a super absorbent polymer (SAP) includes the steps of preparing a first hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; preparing a second hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying and milling the first hydrogel polymer and distributing the first hydrogel polymer into a fine powder having a particle diameter below 150 μm and a base resin having a particle diameter of 150 μm to 850 μm; fabricating a reassembled body of the fine powder by mixing the fine powder and the second hydrogel polymer; and mixing the reassembled body of the fine powder with the first hydrogel polymer, and drying and milling the same. | 09-17-2015 |
Chul Hee Yoo, Suwon-Si KR
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20140049729 | BACKLIGHT UNIT FOR LIQUID CRYSTAL DISPLAY DEVICE - A backlight unit for a liquid crystal device capable of obtaining a high-quality image and reduced in thinness. The backlight unit is disposed below a liquid crystal panel to irradiate light thereoto. A plurality of separate light guide plates define respective blocks. Groups of LEDs each are disposed along an edge of each of the light guiding plates, each of the LED groups emitting light toward a corresponding one of the light guide plates. The each LED group is turned on and off according to the corresponding block. | 02-20-2014 |
20150228869 | LIGHT SOURCE PACKAGE AND DISPLAY DEVICE INCLUDING THE SAME - Provided are a light source package and a display device including the light source package. The light source package includes a substrate; a light-emitting device mounted on the substrate; a red phosphor layer formed adjacent to a surface of the light-emitting device; and an encapsulation layer for encapsulating the light-emitting device and the red phosphor layer, wherein a phosphor of the red phosphor layer is a fluoride-based red phosphor or a sulfide-based red phosphor. The light source package and the display device including the light source package display excellent color reproduction, without discoloration due to moisture after a long period of time. | 08-13-2015 |
Chul-Hee Cho, Gunpo KR
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20100301270 | LIQUID-CRYSTALLINE MEDUIM - The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δε), which contains at least one compound selected from the group of compounds of the formula I, IIA and IIB | 12-02-2010 |
Chul-Hee Lee, Yong-In Si KR
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20100171830 | Inside mirror with surveillance camera - A mirror with a frame on the front of the body and which navigation and a circuit and control panel of camera's module can be installed inside, includes an inside camera installed in a jointed structure on an upper part of the body and which can move up and down and side to side, a frontal camera connected to an antenna bracket joined to a back of the body by a ball joining method, a touch screen monitor that can move up and down utilizing a touch sensor button on the front of the body and a removable communication antenna projected from the antenna bracket. | 07-08-2010 |
Chul-Hee Lee, Seoul KR
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20080198922 | Systems and Methods For Video Quality Measurement Using Auxiliary Information of Codec - A system for evaluating video quality using auxiliary information of a codec includes a video transmitter that includes a source video input unit for inputting source video, an encoding unit for encoding the input source video, a decoding unit for decoding encoded video data, and a video quality evaluation unit for evaluating video quality using the decoded video data. The encoding unit transmits auxiliary information required for video quality evaluation, among information acquired in an encoding procedure, to the video quality evaluation unit. The video quality evaluation unit evaluates video quality using the decoded video data received from the decoding unit, and the auxiliary information received from the encoding unit. | 08-21-2008 |
Chul-Hee Min, Ulsan KR
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20140288223 | BIO RESIN COMPOSITIONS, BIO MOLDED ARTICLE AND METHOD OF MANUFACTURING THE SAME - Disclosed is a bio resin composition, a bio molded article, and a method of manufacturing the same. The bio resin composition is environmentally friendly and provides at least a predetermined level of physical properties, such as hardness, strength, and the like, by including a bio polyethylene resin, a thermoplastic olefin resin, a polypropylene resin, and an inorganic filter and by further including a thermoplastic rubber. The present composition reduces the generation of volatile organic compounds, and may increase the diversity of its use through injection molding. | 09-25-2014 |
Chul-Hee Park, Seoul KR
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20100031679 | ICE MAKER-DRIVING DEVICE FOR REFRIGERATOR FOR OPERATING THE SAME - The present invention relates to an ice maker-driving device for a refrigerator and a method for operating the same wherein the ice-making container connected to the ice-separating lever and rotated by initial circuit set is reversely rotated before forward rotation and has a protruded coupling part having a predetermined angle formed on the other side thereof, without any cooperation with the ice-separating lever, so as to be coupled with a case-fixing part, thereby allowing the ice-making container to be twistedly rotated at one side thereof according to the reverse rotation of the ice-separating lever, such that the separation of ice cubes is conducted and also the stress and tense state of the parts caused by their freezing are removed to prevent their malfunction, thereby efficiently achieving the ice-separating and storing operations. | 02-11-2010 |
20140169671 | APPARATUS AND METHOD FOR COLOR RESTORATION - Provided is a method and apparatus for restoring color of an input image. The method includes: separating multiple band information of a near infrared (NIR) channel from information of the input image by using a correlation between a color channel and the NIR channel in the input image; obtaining estimated invisible light band information of the NIR channel from the multiple band information of the NIR channel and estimated multiple band information of the NIR channel which is estimated from the color channel; estimating invisible light band information of the color channel based on the estimated invisible light band information of the NIR channel; and restoring a visible light band image of the color channel by removing the estimated invisible light band information of the color channel from multiple band information of the color channel included in the information of the input image. | 06-19-2014 |