Young Bum
Young Bum Hong, Wanju-Gun KR
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20160069069 | TRANSPARENT AND HEAT-INSULATING MATERIAL INCLUDING POLYMER CAPSULE AND METHOD FOR PREPARING THE SAME - Provided are a transparent heat-insulating material including a transparent heat-insulating resin layer including polymer capsules and an optical resin, and a method for preparing the same. The transparent heat-insulating material may reduce the transmission of radiative heat of solar radiation energy entering from the exterior, and prevent discharge or loss of heat when indoor heating, while showing high transparency as well. In addition, the transparent heat-insulating material may allow easy control of the size of capsules contained in a transparent heat-insulating film, and may be obtained through a simple and easy process. Further, it is possible to control the light transmittability and heat-insulating property of the transparent heat-insulating material with ease. | 03-10-2016 |
Young Bum Hong, Jeollabuk-Do KR
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20150261021 | LIQUID CRYSTAL FILM HAVING DIFFERENT REFLECTING REGION OF LIGHT ACCORDING TO EXTERNAL ENVIRONMENT CONDITION AND METHOD FOR MANUFACTURING THE SAME - Disclosed are a liquid crystal film having a reflecting region that changes spontaneously depending on variations in external temperature and light intensity, and a method for manufacturing the same. More particularly, the liquid crystal film has a reflecting region that changes into a visible ray region when the external temperature and light intensity increase and into a near infrared ray region when the external temperature and quality of light decrease. | 09-17-2015 |
Young Bum Kim, Incheon KR
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20110058470 | RANGING APPARATUS AND METHOD FOR IMPROVING RANGING PERFORMANCE IN OFDMA SYSTEM - Disclosed herein is a ranging apparatus and method. The ranging apparatus includes a correlation unit for correlating OFDMA reception signals with inverse fast Fourier transformed ranging codes, and outputting correlation result values. A threshold determination unit determines a threshold value depending on characteristics of the reception signals. A comparison unit estimates a delay time by selecting a maximum value from among the correlation result values, and detects a ranging code by comparing the maximum value with the threshold value, and then outputs and feeds back the ranging code and the delay time when the maximum value is equal to or greater than the threshold value. A weight multiplication unit delays the ranging code by the delay time, multiplies a weight by the delayed ranging code, and outputs a resulting value. A calculation unit subtracts the resulting value from the reception signals, and provides adjusted reception signals. | 03-10-2011 |
Young Bum Kim, Daejeon KR
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20140332103 | DEVICE FOR REDUCING PRESSURE AND VELOCITY OF FLOWING FLUID - The present invention relates to a device for reducing the pressure and velocity of a flowing fluid. According to the present invention, a cage has discs having through holes which come into close contact with an outer surface of a plug. The discs are stacked in a direction of a central shaft of the cage. Flow passage portions are formed on the stacked discs, wherein the flow passage portions communicate with the outer surfaces of the discs, and the inner surfaces which correspond to the through-holes so as to form flow passages between the stacked discs, and the direction of the flow passages changes to a circumferential direction and a vertical direction on the stacked discs. Additionally, the discs are stacked by applying one or more flow passage portions based on the number of times of the direction of the flow passage changes and the number of flow passage portions to the discs so as to control the increasing velocity of the flow rate of the fluid according to the degree of opening formed upon upward movements of the plug. | 11-13-2014 |
Young Bum Kim, Dongdaemun-Gu KR
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20120202544 | METHOD AND APPARATUS FOR SETTING THE INITIAL TRANSMISSION POWER OF A TERMINAL IN A CELLULAR WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS CARRIER AGGREGATION - The present invention relates to a method and apparatus for setting the transmission power of a terminal in a wireless communication system. Particularly, the initial transmission power by means of which the terminal transmits a signal via an uplink non-anchor carrier is determined by reflecting the transmission power by means of which the terminal has most recently transmitted a signal via an uplink anchor carrier and by reflecting the difference between channel environments of the uplink anchor carrier and the uplink non-anchor carrier, in a wireless communication system using a broadband formed by carrier aggregation. Consequently, the initial transmission power of the terminal is set as accurately as possible in the uplink non-anchor carrier, thereby preventing signal transmission delay and improving the reliability of received signals. | 08-09-2012 |
20120250625 | METHOD AND DEVICE FOR INDICATING WHETHER TERMINAL CARRIER AGGREGATION HAS BEEN ACTIVATED IN A CELLULAR WIRELESS COMMUNICATION SYSTEM - A method and device deactivate carrier aggregation and execute single carrier operation in a terminal, in a wireless communication system in which broadband is achieved by means of carrier aggregation. More specifically, in a terminal which is running a plurality of carriers, unnecessary power consumption in the terminal is prevented and additional screening events are minimized by defining physical layer signaling so as to make the terminal rapidly convert to running a single carrier. | 10-04-2012 |
20120314687 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING TRAINING SEQUENCE CODE IN COMMUNICATION SYSTEM - A method and apparatus for transmitting a training sequence code of a transmitting apparatus with a plurality of transmitting antennas in a communication system are provided. A transmitting apparatus allocates a plurality of time slots for the plurality of transmitting antennas to be divided into at least one frame, and sends a training sequence code with reference power for any one of the transmitting antennas, and sends remaining training sequence codes for remainders of the transmitting antennas with transmission power from zero to the reference power, in any one of the time slots. A receiving apparatus receives a plurality of training sequence codes for a plurality of transmitting antennas through any one of the plurality of receiving antennas from a transmitting apparatus, and selects one of the training sequence codes having the greatest reception power to estimate a channel. This may improve a channel estimation performance in a communication system. | 12-13-2012 |
Young Bum Kim, Yongin-Si KR
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20080211760 | Liquid Crystal Display and Gate Driving Circuit Thereof - A liquid crystal display and a dual gate driving circuit therefor wherein the number of signal lines are reduced by sharing a start pulse and an output signal of a dummy stage. The liquid crystal display includes a timing controller generating an output enable signal, a gate clock, and a signal start signal in response to an external input signal, a level shifter generating a gate clock pulse and a gate clock bar pulse in response to the output enable signal and the gate clock and generating a single start pulse in response to the start signal and the gate clock, and first and second gate driving circuits outputting the gate clock pulse or the gate clock bar pulse as a gate driving signal to the plurality of gate lines in response to the single start pulse. | 09-04-2008 |
20130139380 | CHIP BONDING APPARATUS AND CHIP BONDING METHOD USING THE SAME - A chip bonding apparatus configured to bond chips to a circuit board using induction heating generated by an AC magnetic field may be provided. In particular, the chip bonding apparatus includes at least one stage unit configured to support a circuit board on which a chip is placed, a rotating unit configured to rotatively move the at least one stage unit at a desired angle, and a bonding unit including an induction heating antenna configured to perform induction heating such the chip is bonded to the circuit board. | 06-06-2013 |
Young Bum Lee, Gyeonggi-Do KR
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20110309910 | SECURITY DOCUMENT CONTROL SYSTEM AND CONTROL METHOD THEREOF - A security document control system and a control method thereof are disclosed. The system functions to automatically control a series of security operations including sensing security documents, storing all records with respect to check-out of security documents in a database, closing exit gates if illegal removal of security documents is judged, and informing a control center and security guards of the illegal removal of security documents so as to arrest an employee who attempts to illegally remove security documents. | 12-22-2011 |
Young Bum Xim, Seoul KR
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20100034176 | METHOD AND APPARATUS FOR DYNAMICALLY ACTIVATING AND DEACTIVATING A SUPPLEMENTARY CELL FOR A WCDMA SYSTEM - A method and apparatus for dynamically activating and deactivating a supplementary cell in Dual-Cell HSDPA service of a Universal Mobile Communication Service (UMTS) system. In a supplementary cell activation and deactivation method, a user equipment receives a supplementary cell activation command from a base station; compares an uplink transmission power with a predetermined threshold value; transmits a supplementary cell activation reply, when the uplink transmission power is equal to or greater than the threshold value; and transmits a supplementary cell deactivation reply, when the uplink transmission power is less than the threshold value. | 02-11-2010 |