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Jeong, Daejon
Byung-Jang Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100039927 | PILOT TRANSMITTING APPARATUS AND METHOD FOR SC-FDMA SYSTEM - Provided are a pilot transmitting apparatus and method capable of selectively using an OFDMA scheme and an SC-FDMA scheme. The pilot transmitting apparatus includes a pilot inserter for inserting a pilot signal in a modulated symbol and inserting a cyclic prefix code for the inserted pilot signal, an FFT processor for receiving symbols with a pilot inserted thereto from the pilot inserter and performing an FFT process on the received symbols, an IFFT processor for receiving the transformed data from the FFT processor and performing an IFFT process on the transformed data, a mapping processor for mapping the output of the FFT processor to input positions of the IFFT processor to load the frequency domain transformed data on predetermined sub-carriers, and a cyclic prefix inserter for inserting a cyclic prefix code for the output of the IFFT processor. | 02-18-2010 |
| 20100061224 | TRANSMITTER FOR EXTENDING GUARD INTERVAL FOR INDIVIDUAL USER EQUIPMENT IN OFDMA SYSTEMS - Provided is a technology for extending a guard interval for individual user equipment in an OFDMA system. The transmitting apparatus includes: a guard interval extension processor for generating symbols with a guard interval extended by copying a part of a current symbol and pasting the copied part to a last part of a previous symbol; a Fourier Transform (FT) processor for receiving the processed symbols from the guard interval extension processor and performing an FT process on the received processed symbols; an Inverse Fast Fourier Transform (IFFT) processor for performing an IFFT process on the FT processed symbols from the FT processor; a mapping processor for mapping outputs of the FT processor to input points of the IFFT processor to load the FT processed frequency-domain data on corresponding sub-carriers; and a cyclic prefix inserter for inserting a cyclic prefix code to output of the IFFT processor. | 03-11-2010 |
Doo Lae Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20120063964 | APPARATUS FOR PRODUCING U3O8 POWDER - In an apparatus for producing U | 03-15-2012 |
Hu-Young Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100065803 | MEMORY DEVICE AND MANUFACTURING METHOD THEREOF - Provided is a resistance variable non-volatile memory device using a trap-controlled Space Charge Limited Current (SCLC), and a manufacturing method thereof. The memory device includes a bottom electrode; an inter-electrode dielectric thin film diffusion prevention film formed on the bottom electrode; a dielectric thin film formed on the inter-electrode dielectric thin film diffusion prevention film and having a plurality of layers with different charge trap densities; and a top electrode formed on the dielectric thin film. | 03-18-2010 |
In Cheol Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080256225 | Osgi-Based Dynamic Service Management Method for Context-Aware Systems - An OSGi-based dynamic service management method for context-aware system is provided. By adding a service bundle for service implementation to an OSGi framework, a service lifecycle is separately managed. For this purpose, the service bundle has several service implementations, and a service factory object is generated as many as the service implementations. The lifecycle of the service is managed. The service factory object installs and uninstalls the service. Accordingly, even when various sensors and devices are newly added to the context-aware system, a corresponding service can be installed and uninstalled at any time, thereby providing a dynamic management. | 10-16-2008 |
Jin-Cheol Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080224801 | Digital Attenuation Apparatus Having Ultra Broadband and Excellent Attenuation Characteristics - Provided is a digital attenuation apparatus having ultra broadband and excellent attenuation characteristics. The digital attenuation apparatus includes an input port, an output port, a first transmission line, a second transmission line, a first switching device, a third transmission line, a first resistive element, a second resistive element, a fourth transmission line, a second switching device, a fifth transmission line, and a third resistive element. | 09-18-2008 |
| 20110227663 | 3-WAY BALUN FOR PLANAR-TYPE DOUBLE BALANCED MIXER - Provided is a 3-way balun for a double balanced mixer. This research provides a 3-way balun available for a planar-type double balanced mixer and a planar-type double balanced mixer employing the same. The 3-way balun includes a first output unit for receiving and outputting an input signal of a predetermined frequency; and second and third output units connected to the first output unit and outputting signals whose phase is different by 180 from a phase of a signal of the first output unit and amplitude is a half of an amplitude of the signal outputted from the first output unit. | 09-22-2011 |
Seong-Kyun Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100042274 | ATTITUDE CONTROL METHOD USING TARGET TRACK APPROXIMATION - Provided is a method for controlling an attitude of a satellite using target track approximation. The method includes the steps of: a) receiving coordinate information of at least one of target areas; b) generating a target track by approximating a track of a satellite based on the received coordinate information; and c) detecting a location of the satellite on a current track, calculating an attitude angle of the satellite for the target track using the location of the satellite and the location of the target area, and applying the calculated attitude angle of the satellite to control the attitude of the satellite. | 02-18-2010 |
Se Yoon Jeong, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090238271 | APPARATUS AND METHOD FOR ENCODING AND DECODING USING ALTERNATIVE CONVERTER ACCODING TO THE CORRELATION OF RESIDUAL SIGNAL - Provided is an apparatus and method for encoding and decoding using alternative transform units according to the correlation of residual signals. The video encoding apparatus includes a first transforming unit for performing discrete cosine transform (DCT), first quantization, first inverse quantization, and inverse DCT on a block basis onto residual coefficients generated after intra frame prediction or inter frame prediction; a second transforming unit for performing discrete sine transform (DST), second quantization, second inverse quantization, and inverse DST on a block basis onto the residual coefficients; a selecting unit for selecting one having a high compression rate between the first and second transforming units for each block through performing rate-distortion optimization; and a flag marking unit for recording information about the selected transforming unit at a flag bit provided on a macroblock basis. | 09-24-2009 |
| 20100046613 | MULTI-DIMENSIONAL AND MULTI-STAGE TRANSFORMING APPARATUS AND METHOD - Provided are an apparatus for multi-stage transforming a plurality of unit blocks in multi-dimension that can improve compression efficiency of video data by collecting Discrete Cosine Transforming (DCT) coefficients of neighboring blocks and performing an additional transformation based on the DCT coefficients of an original picture and a differential picture. The method includes the steps of: performing a Discrete Cosine Transform (DCT) on inputted picture data and selecting R blocks of a predetermined size from DCT picture data, where R is a natural number equal to or greater than 2; arranging DCT coefficients of each of the selected R blocks according to each frequency in one-dimension; and performing one-dimensional transformation again on the DCT coefficients arranged in one-dimension. | 02-25-2010 |
| 20100284459 | APPARATUS FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DCT COEFFICIENT SCANNING BASED ON PIXEL SIMILARITY AND METHOD THEREFOR - The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes: a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients. | 11-11-2010 |
| 20100322526 | METHOD OF FILTERING RESTORED IMAGE USING PLURALITY OF FILTERS AND ENCODING/DECODING APPARATUS AND METHOD USING FILTERING METHOD - A method of filtering a restored image selectively using a plurality of filters, and an encoding and decoding apparatus using the method are provided. The filtering method may filter a restored image using each of a plurality of filter structures to obtain a plurality of filtered restored images, and determine a filter structure of a restored image with a high coding efficiency from among the obtained filtered restored images as a final filter structure. | 12-23-2010 |