| SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION Patent applications |
| Patent application number | Title | Published |
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| 20120117316 | SEMICONDUCTOR DEVICE HAVING STACKED ARRAY STRUCTURE, NAND FLASH MEMORY ARRAY USING THE SAME AND FABRICATION THEREOF - The present invention relates to a semiconductor device, a memory array and a fabrication method thereof, and more particularly to a semiconductor device having a stacked array structure (referred to as a STAR structure: a STacked ARray structure) applicable to not only a switch device but also a memory device, a NAND flash memory array using the same as a memory device and a fabrication method thereof. | 05-10-2012 |
| 20120006112 | METHOD AND PORTABLE TERMINAL FOR ESTIMATING STEP LENGTH OF PEDESTRIAN - A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal. | 01-12-2012 |
| 20110240112 | FLEXIBLE DYE-SENSITIZED SOLAR CELL AND PREPARATION METHOD THEREOF - Provided are a flexible dye-sensitized solar cell and a method for producing the same. More particularly, provided is a method for producing a flexible dye-sensitized solar cell, including: (Step 1) disposing a flexible polymer substrate having a transparent conductive oxide layer deposited thereon in a chamber; (Step 2) spraying oxide semiconductor powder with a size of 1 nm-10 μm carried by a gas onto the flexible polymer substrate having a transparent conductive oxide layer deposited thereon, at a velocity of 100-1200 m/sec by using a spray nozzle, to deposit an oxide semiconductor layer; (Step 3) allowing a dye to be adsorbed onto the oxide semiconductor layer to provide a working electrode; (Step 4) forming a catalyst layer on the top of a transparent substrate having a transparent conductive oxide layer thereon to provide a counter electrode; and (Step 5) allowing the working electrode obtained from Step 3 and the counter electrode obtained from Step 4 to face each other, laminating the two electrodes with each other, and injecting an electrolyte. A flexible dye-sensitized solar cell obtained by the method is also provided. | 10-06-2011 |
| 20110221098 | METHODS OF MANUFACTURING ALIGNMENT SUBSTRATE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE ALIGNMENT SUBSTRATE - A method of manufacturing an alignment substrate includes preparing a first substrate on which an alignment film aligned in a first alignment direction is formed; forming a plurality of fluoro-polymer patterns on the first substrate; changing the alignment direction of regions of the alignment film on which the fluoro-polymer patterns are not formed; and removing the fluoro-polymer patterns by using a fluoro-solvent. | 09-15-2011 |
| 20110213036 | COMPOSITION FOR PREVENTION OF TOOTH HYPERSENSITIVITY - The present invention relates to a composition for prevention of tooth hypersensitivity, and more particularly to a composition for prevention of tooth hypersensitivity, which comprises an adhesive polymer for coating teeth, an active ingredient for prevention of hypersensitivity, a substance for promoting the penetration of the active ingredient for prevention of hypersensitivity, a desensitizing active ingredient, and a pH-adjusting agent. The composition for prevention of tooth hypersensitivity according to the invention can rapidly show the effect of preventing tooth hypersensitivity while maintaining the sensory feel of conventional tooth desensitizers, and it can maintain the tooth hypersensitivity-preventing effect for a long time. | 09-01-2011 |
| 20110194509 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING SOUNDING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, at least one sounding subchannel determining parameter is transmitted from a sounding signal receiving apparatus to a sounding signal transmitting apparatus. A sounding subchannel for the sounding signal transmitting apparatus is allocated according to the sounding subchannel determining parameter. A sounding signal is received from the sounding signal transmitting apparatus over the allocated sounding subchannel. The sounding subchannel determining parameter is determined for allocating a sounding subchannel considering a frequency correlation. | 08-11-2011 |
| 20100319029 | METHOD AND APPARATUS FOR CONTROLLING CHANNEL FOR PROVIDING INTERNET PROTOCOL TELEVISION SERVICE - A method and apparatus for controlling a channel for providing an IPTV is disclosed, which is capable of improving use efficiency of network resource and reducing a channel zapping time by controlling a channel type of each channel and a bit rate of video data to be transmitted through each channel, the method comprising (a) determining an optimal channel status vector among channel status vectors to indicate channel types of respective channels, wherein the optimal channel status vector enables a minimum cost corresponding to the sum of an average channel zapping time of respective channels and an average distortion value of video data transmitted through the respective channels; and determining an optimal bit rate at the determined optimal channel status vector; and (b) transmitting the video data at the optimal bit rate through the respective channels. | 12-16-2010 |
| 20100295990 | METHOD FOR SCALING VOLTAGE IN MOBILE TERMINAL - Provided is an operating voltage scaling method for a portable terminal. The method includes, if reproduction of a moving image is requested, acquiring DYNamicity (DYN) of the reproduction-requested moving image, determining whether frame skipping is possible for the moving image according to the acquired DYN of the moving image, and if it is determined that frame skipping is possible for the moving image, supplying a low operating voltage to a controller of the mobile terminal to control the mobile terminal to operate with a low-speed clock, and reproducing the moving image while skipping a frame. | 11-25-2010 |
| 20100238157 | METHOD OF MODULATING/DEMODULATING A SIGNAL, APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE APPARATUS - A method of modulating and demodulating a signal includes modulating data information included in an input data signal provided from an external source and clock information included in an input clock signal provided from the external source into a transmission signal, using (n+1) delay clock signals generated based on the input clock signal, where n is a natural number. The transmission signal is demodulated into an output clock signal including restored clock information and an output data signal including restored data information, using (m+1) delay clock signals generated based on the clock information, where m is a natural number less than n. | 09-23-2010 |
| 20100156550 | ADJUSTABLE CAPACITOR, DIGITALLY CONTROLLED OSCILLATOR, AND ALL-DIGITAL PHASE LOCKED LOOP - An adjustable capacitor is provided including a capacitor unit including a plurality of capacitor groups aligned in a matrix format and a switch unit to adjust capacitance by connecting the plurality of capacitor groups in parallel according to a selection signal of a column and row of the matrix. Accordingly, the adjustable capacitor may be realized of a small size but with a high capacitance change rate. | 06-24-2010 |
| 20100134165 | TIME-TO-DIGITAL CONVERTER AND ALL-DIGITAL PHASE-LOCKED LOOP - A time-to-digital converter (TDC) includes a converter which receives a first signal and a second signal, delays the second signal in phases using a plurality of delay elements which are coupled in series, compares the delayed second signal with the first signal, and outputs a phase error of the second signal with respect to the first signal, a phase frequency detector which receives the first signal, and a third signal from one of the nodes in the plurality of delay elements, and outputs a phase difference between the first signal and the third signal, and a frequency detector which outputs a frequency error of the second signal with respect to the first signal as a digital code using an output signal of the phase frequency detector and the second signal. | 06-03-2010 |
| 20100042391 | WAVEFORM INVERSION IN LAPLACE-FOURIER DOMAIN - Disclosed are an apparatus and method for visualizing subsurface velocity structure by processing signals through waveform inversion in the Laplace-Fourier domain, and a recording medium storing a program for implementing the method. A receiver receives a seismic signal from a target region, and a signal processor processes the seismic signal to generate image data for visualizing the subsurface structure of the target region. The signal processor performs the waveform inversion in the Laplace-Fourier domain, thereby obtaining a velocity model similar to an true structure of the target region. | 02-18-2010 |
| 20100028467 | Composition Comprising Ginsenosides Isolated From The Extract Of Processed Ginseng For Preventing And Treating Thrombotic Disease - The present invention relates to compositions containing an extract of processed | 02-04-2010 |
