Lee, Gwangju-City
Dong-Yun Lee, Gwangju-City KR
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20100037420 | Upright type vacuum cleaner - An upright type vacuum cleaner is provided that includes a cleaner body formed with a mounting space; a vacuum motor mounted in the cleaner body to produce suction force; a brush assembly connected to the cleaner body; a dust collection device mounted in the mounting space and having a dust collection bin; and a lifting/lowering unit for lifting or lowering the dust collection bin in relation to the cleaner body, so that the dust collection bin is anchored in the mounting space or removed from the mounting space, wherein the cyclone cylinder has a locking handle and a handle connection part is formed on a corresponding part of the cleaner body so that the locking handle can be removably connected to the handle connection part. | 02-18-2010 |
Hak-Bong Lee, Gwangju-City KR
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20080300720 | Cleaning robot - An improved cleaning robot that uses a simple structure to sense an obstacle is disclosed. The cleaning robot includes a robot main body comprising a driving unit to drive the cleaning robot, and a cleaning unit to remove dust, a bumper unit which is movably mounted in the robot main body to protect the robot main body from collision with an obstacle, a sensor unit which supports the bumper unit movably in a plurality of directions to sense the collision of the bumper unit and the obstacle, and a control unit which controls the driving unit on the basis of a signal sensed by the sensor to avoid the obstacle. | 12-04-2008 |
20080301900 | Steam-vacuum cleaner with electric power controlling function and method thereof - A steam-vacuum cleaner with an electric power controlling function and a method thereof are provided. The steam-vacuum cleaner includes a suction motor which rotates to generate a suction force; a heater which emits heat to generate a steam; a power supply part which supplies an electric power to the suction motor and the heater; an electric power measuring part which measure a total electric power supplied from the power supplier and consumed in the suction motor and the heater; and a controller which controls at least one of a rotational velocity of the suction motor and a magnitude of heat emitted from the heater such that the total electric power of the suction motor and the heater is maintained less than a threshold value. Accordingly, steam and vacuum cleaning functions are simultaneously performed within the limit of power capacity of a wire. | 12-11-2008 |
20090071732 | Wheel driving assembly of a moving apparatus - A wheel driving apparatus for a moving apparatus is provided. The wheel driving apparatus includes a wheel, a driving motor to generate a driving power to rotate the wheel, a gear box to transmit the rotational force of the driving motor to the wheel, and a guide shaft movable vertically with respect to the base member, wherein the wheel, the driving motor, the gear box, and the guide shaft are connected integrally with each other to move vertically with respect to the base member in unison. | 03-19-2009 |
Hong-Joon Lee, Gwangju-City KR
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20140142250 | SUPRAMOLECULAR STRUCTURE HAVING SUB-NANO SCALE ORDERING - An organic crystalline composition is provided. The organic crystalline composition includes a main material having π-conjugated back bone and a functional group containing an atom having an unshared electron pair, and a linking material combining with the adjacent main material at the functional group by quaternization, organic material-metal interaction, ionic bonding, or hydrogen bonding. | 05-22-2014 |
Jae-Suk Lee, Gwangju-City KR
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20090105416 | Synthesis of Vinylphenylpyridine and Living Anionic Polymerization - Provided are a vinyl-biphenylpyridine monomer and a polymer thereof. More particularly, the present invention provides a vinyl-biphenylpyridine monomer having a side chain of pyridine or phenylpyridine as a functional group, a homopolymer of which molecular weight and molecular weight distribution are controlled using the monomer, and a block copolymer of which molecular structure and molecular weight are controlled to facilitate synthesis of an organic metal complex. Accordingly, the present invention provides a vinyl-biphenylpyridine monomer and a polymer thereof which are effectively used as nano and optical functional materials. | 04-23-2009 |
20140142250 | SUPRAMOLECULAR STRUCTURE HAVING SUB-NANO SCALE ORDERING - An organic crystalline composition is provided. The organic crystalline composition includes a main material having π-conjugated back bone and a functional group containing an atom having an unshared electron pair, and a linking material combining with the adjacent main material at the functional group by quaternization, organic material-metal interaction, ionic bonding, or hydrogen bonding. | 05-22-2014 |
Ju-Sang Lee, Gwangju-City KR
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20080300720 | Cleaning robot - An improved cleaning robot that uses a simple structure to sense an obstacle is disclosed. The cleaning robot includes a robot main body comprising a driving unit to drive the cleaning robot, and a cleaning unit to remove dust, a bumper unit which is movably mounted in the robot main body to protect the robot main body from collision with an obstacle, a sensor unit which supports the bumper unit movably in a plurality of directions to sense the collision of the bumper unit and the obstacle, and a control unit which controls the driving unit on the basis of a signal sensed by the sensor to avoid the obstacle. | 12-04-2008 |
20080301900 | Steam-vacuum cleaner with electric power controlling function and method thereof - A steam-vacuum cleaner with an electric power controlling function and a method thereof are provided. The steam-vacuum cleaner includes a suction motor which rotates to generate a suction force; a heater which emits heat to generate a steam; a power supply part which supplies an electric power to the suction motor and the heater; an electric power measuring part which measure a total electric power supplied from the power supplier and consumed in the suction motor and the heater; and a controller which controls at least one of a rotational velocity of the suction motor and a magnitude of heat emitted from the heater such that the total electric power of the suction motor and the heater is maintained less than a threshold value. Accordingly, steam and vacuum cleaning functions are simultaneously performed within the limit of power capacity of a wire. | 12-11-2008 |
20090071732 | Wheel driving assembly of a moving apparatus - A wheel driving apparatus for a moving apparatus is provided. The wheel driving apparatus includes a wheel, a driving motor to generate a driving power to rotate the wheel, a gear box to transmit the rotational force of the driving motor to the wheel, and a guide shaft movable vertically with respect to the base member, wherein the wheel, the driving motor, the gear box, and the guide shaft are connected integrally with each other to move vertically with respect to the base member in unison. | 03-19-2009 |
Kwang-Hee Lee, Gwangju-City KR
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20100193034 | ORGANIC-INORGANIC HYBRID JUNCTION DEVICE USING REDOX REACTION AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - Provided are an organic-inorganic hybrid junction device in which organic and inorganic materials are connected by junction, and a depletion layer is formed at a junction interface, and an organic photovoltaic cell using the same. A basic metal oxide solution is applied to a top surface of a P-doped organic layer. The basic metal oxide solution has N-type characteristics. An oxidation-reduction reaction occurs in response to the application of the basic metal oxide solution at a junction interface of the organic layer, and the metal oxide layer is simultaneously gelated. A free charge is removed from a surface region of the P-doped organic layer by the oxidation-reduction reaction at the interface, which is converted into a depletion region. According to the introduction of the depletion region, P-N junction occurs, and thus the device has a diode characteristic in an electrical aspect. Also, an organic photovoltaic cell including the organic layer, the depletion layer and the metal oxide layer is fabricated. | 08-05-2010 |
20110168249 | WET-PROCESSIBLE METAL OXIDE SOLUTION, METHOD OF USING THE SAME, AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - A method of preparing a wet-processible metal oxide solution and a method of fabricating a film using the same are provided. A metal oxide that has been widely used as a photocatalyst is improved and a metal oxide solution having new functionality is formed. The metal oxide solution is transparent, wet-processible, and facilitates electron transfer. The metal oxide solution can be applied in various ways to an electronic device and is well-suited for application to an electronic device using organic materials. Also, a titanium oxide solution functions to remove and block oxygen and moisture. Thus, when it is applied to an electronic device using organic materials that are vulnerable to oxygen and moisture, the lifetime of the device can be increased. | 07-14-2011 |
20150072465 | ORGANIC-INORGANIC HYBRID JUNCTION DEVICE USING REDOX REACTION AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - Provided are an organic-inorganic hybrid junction device in which organic and inorganic materials are connected by junction, and a depletion layer is formed at a junction interface, and an organic photovoltaic cell using the same. A basic metal oxide solution is applied to a top surface of a P-doped organic layer. The basic metal oxide solution has N-type characteristics. An oxidation-reduction reaction occurs in response to the application of the basic metal oxide solution at a junction interface of the organic layer, and the metal oxide layer is simultaneously gelated. A free charge is removed from a surface region of the P-doped organic layer by the oxidation-reduction reaction at the interface, which is converted into a depletion region. According to the introduction of the depletion region, P-N junction occurs, and thus the device has a diode characteristic in an electrical aspect. Also, an organic photovoltaic cell including the organic layer, the depletion layer and the metal oxide layer is fabricated. | 03-12-2015 |
Mun-Seob Lee, Gwangju-City KR
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20090269051 | METHOD OF CONTROLLING OPTICAL OUTPUT POWER AND PASSIVE OPTICAL NETWORK SYSTEM USING THE SAME - Provided are an optical output power control method that provides optical communication without harming the human body even when a transmission line is cut or no optical network unit (ONU) accesses a communication system, and a passive optical network (PON) system using the method. In the method, an optical signal having a predetermined period is transmitted when an optical communication system is in an abnormal state, wherein the predetermined period includes a laser-on time interval in which the optical signal has a normal power level and a laser-off time interval in which the optical signal is off or has a power level lower than the normal power level, so that the optical communication system performs optical communication without harming the human body even during the abnormal state. | 10-29-2009 |
20100008379 | DYNAMIC BANDWIDTH ALLOCATION DEVICE FOR AN OPTICAL NETWORK AND METHOD THEREOF - A dynamic bandwidth allocation (DBA) device and a method thereof are provided. In the DBA method, the band allocation periods according to class queues and allocable bands with respect to each class queue are calculated on the basis of the service level agreement information and stored according to the service types in separate tables. The bandwidth allocation amount is calculated with respect to class queues which have the allocation periods by concurrently checking all the tables at each frame. The upward bandwidth usage efficiency is improved by calculating the final bandwidth allocation information from the service with a high priority order on the basis of the total allocable bandwidth of the corresponding frame. The upward bandwidth allocation amount can be calculated at each frame by reducing the processing speed in calculating the bandwidth allocation amount of each class queue. Accordingly, it is possible to effectively use the network. | 01-14-2010 |
Sanghyeun Lee, Gwangju-City KR
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20090106106 | Method and apparatus for transmitting and receiving IP-based two-way advertisement - Provided is a method of transmitting and receiving a two-way advertisement. The method is performed separately from a broadcasting being received by a client. When the client calls for the two-way advertisement, an Internet Protocol (IP)-based two-way advertisement receiving apparatus of the client requests and receives the two-way advertisement from an IP-based two-way advertisement server; stores the two-way advertisement in an advertisement storage unit, wherein the two-way advertisement is transmitted from the IP-based two-way advertisement server which refers to an advertisement area code included in the two-way advertisement and transmits the two-way advertisement by using a multicast group address corresponding to the advertisement area code; and displays the two-way advertisement on a screen of a client using terminal of the client. In the case where the client receives a summary advertisement and desires to obtain more detailed information, the client can receive a detailed advertisement and order a product via the screen. | 04-23-2009 |
Sun Keun Lee, Gwangju-City KR
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20140049149 | REFRIGERATOR - A refrigerator including an extractable container, and a conveying unit formed in an inner space of a vertical wall of the extractable container. The conveying unit includes a guide part to guide the movement of a partition member that divides a storage space of the extractable container, and a fixing part to restrict the movement of the partition member | 02-20-2014 |
20140292174 | REFRIGERATOR - A refrigerator including an extractable container, and a conveying unit formed in an inner space of a vertical wall of the extractable container. The conveying unit includes a guide part to guide the movement of a partition member that divides a storage space of the extractable container, and a fixing part to restrict the movement of the partition member | 10-02-2014 |
Yong-Tak Lee, Gwangju-City KR
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20090068775 | Method for Fabricating Micro-Lens and Micro-Lens Integrated Optoelectronic Devices Using Selective Etch of Compound Semiconductor - Provided are a method of fabricating a microlens using selective etching of a compound semi-conductor and a method of fabricating a photoelectric device having the microlens. The formation of the microlens includes patterning a compound semiconductor layer and removing a lateral surface of the compound semiconductor layer to form a roughly hemispheric lens. The lateral surface of the compound semiconductor layer is removed by a digital alloy method. In particular, the lateral surface of the compound semiconductor layer is removed by a wet etching process. | 03-12-2009 |