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Chang Soo
Chang Soo Jang, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090171635 | Electrostatic Discharge Voltage Resistive Current Modeling Method of Electrostatic Discharge Protection Device - Provided is a method for modeling an ESD breakdown current. According to one variation, a first proportional constant is based on a circumference of the ESD protection device and a second proportional constant based on an area of the ESD protection device. A dual first order equation is derived by sampling circumferences and areas of two ESD protection devices. According to another variation, an equation is defined in which a third value (an ESD breakdown current) is a sum of a first value and a second value, the first value being obtained by multiplying a circumference of an ESD protection device by a first proportional constant, the second value being obtained by multiplying an area of the ESD protection device by a second proportional constant. Then, circumferences and areas of first and second ESD protection samples are calculated. Next, first and second equations are derived by reflecting the first and second circumferences and areas to the equation. | 07-02-2009 |
| 20100060302 | SEMICONDUCTOR DEVICE AND METHOD FOR MEASURING ANALOG CHANNEL RESISTANCE THEREOF - A semiconductor device and a method for measuring an analog channel resistance thereof are provided. The semiconductor device includes a substrate, a gate insulating layer and a gate formed on the substrate, a source and a drain formed in the substrate and at both sides of the gate, a source sense connected to the source, and a drain sense connected to the drain. | 03-11-2010 |
Chang Soo Jung, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100021436 | MULTIPOTENT ADULT STEM CELL DERIVED FROM CANINE UMBILICAL CORD BLOOD, PLACENTA AND CANINE FETUS HEART, METHOD FOR PREPARING THE SAME AND CELLULAR THERAPEUTICS CONTAINING THE SAME - The present invention relates to multipotent adult stem cells derived from canine umbilical cord blood, placental blood and blood sample from canine fetal heart, and a method for preparing the same as well as a cellular therapeutic agent containing the same, more specifically, to a multipotent adult stem cell isolated by culturing an eukaryotic cell derived from canine umbilical cord blood, placental blood and blood sample from canine fetal heart in a FBS-containing medium and a method for preparing the same. Adult stem cells according to the present invention are derived from canine umbilical cord blood, placental blood and blood sample from canine fetal heart. The adult stem cells have characteristics highly similar to human mesenchymal stem cells as well as remarkable cell growth at the initial step compared to human UCB-derived mesenchymal stem cells so that the cells are useful to treat canine incurable diseases and difficult-to-cure diseases. Furthermore, multipotent adult stem cells are effective to treat musculoskeletal diseases and neural diseases due to the ability to differentiate into osteogenic cells and neural cells. | 01-28-2010 |
Chang Soo Kang, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20120113175 | Driving apparatus of inkjet printer head and driving method thereof - Disclosed herein is a driving apparatus for an inkjet printer head including: a controller generating and outputting pulse control signals for driving an inkjet printer head; a level switching unit operated to be switched according to the pulse control signals to output a predetermined level of switching signals; a driver selectively controlling a plurality of nozzles by using the driving waveforms generated by combining the switching signals, whereby the inkjet printer head can be implemented simpler at low cost. | 05-10-2012 |
Chang Soo Lee, Seosan-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110105193 | Mobile device supporting touch semi-lock state and method for operating the same - A mobile device and a method support a touch semi-lock state. When entering into the touch semi-lock state, a predefined hot menu including items and a touch-lock icon are provided on a touch screen. An output area of the touch-lock icon on the touch screen is defined as a touch event allowable region. A specific item of the hot menu is selected in response to a user input that moves the touch-lock icon onto the specific item. A particular end-user function corresponding to the selected item is activated. | 05-05-2011 |
| 20110242137 | TOUCH SCREEN APPARATUS AND METHOD FOR PROCESSING INPUT OF TOUCH SCREEN APPARATUS - A touch screen apparatus includes a touch screen and a processor. The touch screen displays a virtual keyboard including a plurality of keys. When a touch occurs on the virtual keyboard, the processor searches for a key corresponding to the position where the touch occurs, and magnifies and displays a plurality of keys existing in the neighborhood of the position where the touch occurs according to the search result. | 10-06-2011 |
Chang Soo Lim, Yongin-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20120312043 | HEAT PUMP AND CONTROL METHOD THEREOF - A heat pump that uses solar heat as an evaporation heat source of a refrigerant. The heat pump includes a solar heat collector, a compressor to compress a refrigerant, a first heat exchanger to condense the refrigerant compressed by the compressor and to perform heat exchange between the condensed refrigerant and water, a second heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and heat collected by the solar heat collector, a third heat exchanger to perform heat exchange between the refrigerant having passed through the first heat exchanger and external air, and a first flow channel switching valve to allow the refrigerant having passed through the first heat exchanger to selectively flow to the second heat exchanger or the third heat exchanger therethrough. | 12-13-2012 |
Chang Soo Lim, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20110240731 | ELECTRONIC SHELF LABEL SYSTEM, METHOD OF SYNCHRONIZING ELECTRONIC SHELF LABEL TAG WITH PRODUCT, AND METHOD OF UPDATING PRODUCT INFORMATION OF THE SAME - The electronic shelf label system includes a management server unit storing product information regarding a product, a gateway unit including a plurality of gateways receiving a message containing the product information from the management server unit, and a plurality of electronic shelf label tag units communicating with the gateways, respectively, the plurality of electronic shelf label tag units each including a plurality of electronic shelf label tags receiving the product information from the gateway and displaying the received product information. The management server unit includes a database storing tag information regarding the electronic shelf label tags and product information displayed on the electronic shelf label tags such that the tag information and the product information are linked together. | 10-06-2011 |
| 20120013467 | ELECTRONIC SHELF LABEL SYSTEM AND METHOD FOR DRIVING THE SAME - Disclosed herein is an electronic shelf label system. The electronic shelf label system includes a plurality of electronic tags that are installed on a product display stand and confirms the residual amount of a battery to turn-on a battery warning light when the residual amount is smaller than a reference voltage and transmits replacement request signals to inform the replacement time of the battery; and a wired/wireless communication converter that relays information between the electronic tags and a server and transmits the replacement request signals received from the electronic tags to be relayed thereby to the server. The electronic shelf label system of the present invention can intuitively and easily confirm the timing when the battery of the electronic is replaced, thereby making it possible to improve the efficiency in the working of replacing the battery. | 01-19-2012 |
| 20120044056 | ELECTRONIC SHELF LABEL SYSTEM AND COMMUNICATING METHOD USING THE SAME - Disclosed herein is an electronic shelf label system. The electronic shelf label system includes a wired/wireless converter wirelessly transmitting product information according to request of a server, at least one rail installed on a product display stand and including a plurality of electrical wirings, at least one first electronic tag installed in the rail and performing wireless communication with the wired/wireless converter, and a plurality of second electronic tags each installed in the rail and performing wired communication with the first electronic tag through the electronic wirings. The electronic shelf label system uses the hybrid communication in which wire and wireless are mixed, thereby making it possible to provide the smooth communication environment by removing a shadow area of communication while dispersing communication traffic. | 02-23-2012 |
| 20120133623 | ELECTRONIC SHELF LABEL APPARATUS FOR SWITCHING IMAGES AND METHOD THEREOF - There is provided an electronic shelf label including an image display unit displaying a first image; a sensor unit detecting image switching signals; and a processor unit determining whether the image switching signals detected by the sensor unit are valid and switching the first image displayed on the image display unit to a second image when the image switching signals are valid, and a communication unit receiving a plurality of image data displayed on the image display unit. The processor unit determines that the image switching signals are valid when a detection duration time of the image switching signals is longer than a predetermined first threshold time. By this configuration, the electronic shelf label can switch a plurality of images and reduce the influence of disturbance to thereby prevent unnecessary image switching. Further, the electronic shelf label can provide product-related information for a manager or the like as well as for a purchaser. | 05-31-2012 |
| 20120161943 | ELECTRONIC TAGS, ESL SYSTEM, METHOD FOR SETTING TIME INFORMATION OF ESL SYSTEM AND METHOD FOR OPERATING ESL SYSTEM - Disclosed herein are an electronic tag, an ESL system, a method for setting time information of the ESL system, and a method for operating the ESL system. The electronic tag includes: a communication interface unit transmitting and receiving data; a display unit displaying the information of the product; a power supply unit supplying power; a control unit controlling the communication interface unit, the display unit, and the power supply unit and processing data; and a memory unit storing data required to process data in the control unit, and the control unit possesses time information appropriated in real time. | 06-28-2012 |
| 20120163609 | APPARATUS FOR PROCESSING A MULTI-CHANNEL AUDIO SIGNAL AND METHOD THEREOF - A multi-channel audio signal transmitting apparatus of the present invention includes an encoding unit configured to encode a predetermined audio signal and a controller configured to transmit the encoded audio signal to a predetermined device based on an HDAI (high definition audio interface) protocol. | 06-28-2012 |
| 20120169477 | COMMUNICATIONS SYSTEM AND METHOD OF COMMUNICATING DISPLAY INFORMATION, AND ELECTRONIC SHELF LABEL SYSTEM USING THE SAME - There are provided a communications system and a method for more efficiently communicating display information in transmitting large-capacity data, such as graphics data, between communication nodes, and an electronic shelf label system using the same. The communications system communicating display information includes a first communications device transmitting display information and a second communications device having a display unit displaying the display information. | 07-05-2012 |
| 20120274236 | HARBOR LIGHTING CONTROL APPARATUS - A harbor lighting control apparatus is provided, which includes a plurality of slaves to perform on control or off control, and dimming control with respect to a light emitting diode (LED) array light source mounted to a lighthouse when an on control signal or off control signal, and a dimming control signal are received, and to transmit a result of the control as acknowledge signals, and a master to transmit the on control signal or off control signal and the dimming control signal to all of the plurality of slaves by a broadcast scheme, to transmit the on control signal or off control signal and the dimming control signal to an individual slave by a unicast scheme, and to recognize operational states of the plurality of slaves by receiving the acknowledge signals from the plurality of slaves. Accordingly, stable and reliably control of the harbor lighting is enabled. | 11-01-2012 |
| 20120277894 | AUDIO AUTHORING APPARATUS AND AUDIO PLAYBACK APPARATUS FOR AN OBJECT-BASED AUDIO SERVICE, AND AUDIO AUTHORING METHOD AND AUDIO PLAYBACK METHOD USING SAME - An audio producing apparatus and an audio playing apparatus for an object-based audio service, and an audio producing method and an audio playing method using the same are provided. The producing apparatus and the audio playing apparatus supplies the object-based audio service, using audio object signals corresponding to a number of audio channels processable by the audio playing apparatus. | 11-01-2012 |
Chang Soo Park, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20080251836 | NON-VOLATILE MEMORY DEVICE AND METHOD FOR FABRICATING THE SAME - A method for fabricating a non-volatile memory device includes forming a charge tunneling layer composed of a hafnium silicate (HfSi | 10-16-2008 |
| 20080318430 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE HAVING POROUS LOW DIELECTRIC CONSTANT LAYER FORMED FOR INSULATION BETWEEN METAL LINES - The present invention related to a method for manufacturing a semiconductor device. More particularly, this method describes how to manufacture a semiconductor device having a porous, low dielectric constant layer formed between metal lines, comprising an insulation layer enveloping fillers. | 12-25-2008 |
| 20090093115 | METHOD FOR FORMING METAL LINE OF SEMICONDUCTOR DEVICE BY ANNEALING ALUMINUM AND COPPER LAYERS TOGETHER - A metal line is formed to realize an improved electrical conductivity over the conventional aluminum metal lines. The metal line of a semiconductor device is made by forming an interlayer dielectric having a metal line forming region on a semiconductor substrate. A diffusion barrier on the interlayer dielectric is formed which includes a surface of the metal line forming region. A nucleus formation prevention layer is formed on upper ends of sidewalls of the metal line forming region and on a portion of the diffusion barrier which is placed on an upper surface of the interlayer dielectric. A laminated metal layer made of an aluminum layer and a copper layer is formed to fill the metal line forming region. A portion of the laminated metal layer, the nucleus formation prevention layer and the diffusion barrier is removed to expose the interlayer dielectric. The laminated metal layer is annealed into an annealed metal layer. | 04-09-2009 |
| 20090269915 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE PREVENTING LOSS OF JUNCTION REGION - A method for manufacturing a semiconductor device includes forming an insulation layer having a contact hole on a semiconductor substrate. A metal silicide layer is deposited on a surface of the contact hole and the insulation layer to have a concentration gradient that changes from a silicon-rich composition to a metal-rich composition, with the lower portion of the metal silicide layer having the silicon-rich composition and the upper portion of the metal silicide layer having the metal-rich composition. The metal silicide layer is then annealed so that the compositions of metal and silicon in the metal silicide layer become uniform. | 10-29-2009 |
| 20100091730 | APPARATUS AND METHOD FOR DETERMINING UPLINK SCHEDULING PRIORITY IN BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for determining an uplink scheduling priority in a broadband wireless communication system are provided. The apparatus includes a basic priority determination unit for calculating a basic priority metric of at least one Mobile Station (MS), a calculation unit for calculating a correction value for considering an interference level with respect to the basic priority metric by using downlink channel quality of each MS, and a final priority determination unit for determining an uplink scheduling priority by calculating a final priority metric by using the correction value. | 04-15-2010 |
| 20110034028 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE HAVING POROUS LOW DIELECTRIC CONSTANT LAYER FORMED FOR INSULATION BETWEEN METAL LINES - The present invention related to a method for manufacturing a semiconductor device. More particularly, this method describes how to manufacture a semiconductor device having a porous, low dielectric constant layer formed between metal lines, comprising an insulation layer enveloping fillers. | 02-10-2011 |
Chang Soo Ryu, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100245392 | FLEXIBLE DISPLAY DEVICE AND METHOD FOR CHANGING DISPLAY AREA - A display device to change an image displayed in a display area when the display area is changed includes a memory, a location output unit and a screen display unit. The memory stores size information of a display area displayed on a screen and the image data of the displayed image. The location computing unit computes a start point of the changed display area when the display area is changed. The display unit decodes data corresponding to the size of the display area based on the computed new start point from the image data to display the decoded data in the display area. Since the start point is obtained with center point of the changed display area and its size information and then a display area to be displayed is determined based on the start point, a current search location is maintained even when the screen is swung. | 09-30-2010 |
| 20120127205 | FLEXIBLE DISPLAY DEVICE AND METHOD FOR CHANGING DISPLAY AREA - A display device to change an image displayed in a display area when the display area is changed includes a memory, a location output unit and a screen display unit. The memory stores size information of a display area displayed on a screen and the image data of the displayed image. The location computing unit computes a start point of the changed display area when the display area is changed. The display unit decodes data corresponding to the size of the display area based on the computed new start point from the image data to display the decoded data in the display area. Since the start point is obtained with center point of the changed display area and its size information and then a display area to be displayed is determined based on the start point, a current search location is maintained even when the screen is swung. | 05-24-2012 |
Chang Soo Yang, Sungnam KR
| Patent application number | Description | Published |
|---|---|---|
| 20080292023 | DIRECT SAMPLING TYPE WIRELESS RECEIVER AND METHOD USING THE SAME - There are provided a direct sampling type wireless receiver and a method using the same that reduce nonlinearity and DC offset by using a multi-port network and a carrier frequency direct conversion method with a low sampling rate of a direct sampling method in a wireless communication receiver. A direct sampling type wireless receiver according to an aspect of the invention includes: a reference signal generation unit supplying a first reference signal having a predetermined frequency and a second reference signal having a higher frequency than the first reference signal; a down sampling unit sampling an input RF signal according to the first reference signal; an analog-to-digital converting unit converting the signal sampled by the down sampling unit into a digital signal according to the second reference signal; and a multiple-input multiple-output port unit dividing the digital signal from the analog-to-digital converting unit into a plurality of digital signals, generating a plurality of carrier signals having different phases from each other by shifting phases of the digital signals, and outputting a plurality of phase signals having different phases from each other by adding the plurality of carrier signals and the plurality of digital signals to each other. | 11-27-2008 |
Chang Soo Yang, Seongnam KR
| Patent application number | Description | Published |
|---|---|---|
| 20090046814 | IN-PHASE SIGNAL AND QUADRATURE SIGNAL GENERATOR OF MULTI-PORT NETWORK - An in-phase signal and quadrature signal generator of multi-port network can generate an in-phase (I) signal and a quadrature (Q) signal using a matrix according to a rate of powers detected from signals from a multi-port network. | 02-19-2009 |
| 20090072876 | ULTRA-WIDE BAND PULSE SIGNAL GENERATOR - There is provided an ultra-wide band pulse signal generator that can vary a waveform and bandwidth of a pulse signal by delaying transmitted data according to a clock signal without using a delay line to generate the pulse signal. An ultra-wide band pulse signal generator according to an aspect of the invention may include: a signal generating unit sequentially delaying transmitted data according to a predetermined clock signal to generate a plurality of pulse signals; an amplification unit amplifying the plurality of pulse signals from the signal generating unit according to predetermined amplification ratios; and a combination unit combining the plurality of pulse signals amplified by the amplification unit. | 03-19-2009 |
| 20100142588 | PARALLEL SEQUENCE SPREAD SPECTRUM TYPE CHAOTIC SIGNAL TRANSMISSION DEVICE - A parallel sequence spread spectrum type chaotic signal transmission device is disclosed to convert a serial data signal into a parallel data signal and transmit a chaotic signal according to the converted data signal. The parallel sequence spread spectrum type chaotic signal transmission device includes: a signal converting unit that converts serial data desired to be transmitted into parallel data having a pre-set unit; a chaotic signal generating unit that generates a pre-set chaotic signal; and an amplifying unit that amplifies the chaotic signal from the chaotic signal generating unit according to the data which has been converted by the signal converting unit. | 06-10-2010 |
| 20100144298 | APPARATUS AND METHOD FOR GENERATING IN-PHASE SIGNAL AND QUADRATURE SIGNAL OF MULTI-PORT NETWORK - Provided is an apparatus and method for generating I/Q signals in a multi-port network, which can generate I/Q signals with accurate coordinates and sizes by repeatedly controlling the coordinates and size of an initial parameter in accordance with a predetermined reference condition. The I/Q signal generating apparatus of a multi-port network includes a multi-port network unit, a signal generation unit, and a control unit. The multi-port network unit converts a receive (RX) signal into a plurality of phase signals with different phases in accordance with a predetermined reference signal. The signal generation unit restores original data on the basis of the power of the phase signals received from the multi-port network unit. The control unit controls the restoration operation of the signal generation unit to be repeated so that the original data restored by the signal generation unit satisfies a predetermined reference range. | 06-10-2010 |
| 20120133623 | ELECTRONIC SHELF LABEL APPARATUS FOR SWITCHING IMAGES AND METHOD THEREOF - There is provided an electronic shelf label including an image display unit displaying a first image; a sensor unit detecting image switching signals; and a processor unit determining whether the image switching signals detected by the sensor unit are valid and switching the first image displayed on the image display unit to a second image when the image switching signals are valid, and a communication unit receiving a plurality of image data displayed on the image display unit. The processor unit determines that the image switching signals are valid when a detection duration time of the image switching signals is longer than a predetermined first threshold time. By this configuration, the electronic shelf label can switch a plurality of images and reduce the influence of disturbance to thereby prevent unnecessary image switching. Further, the electronic shelf label can provide product-related information for a manager or the like as well as for a purchaser. | 05-31-2012 |
Chang Soo Yang, Gyunggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080205536 | I/Q REGENERATION DEVICE OF FIVE-PORT NETWORK - There is provided an I/Q regeneration device of a five-port network which adopts a single-frequency continuous wave signal in place of a specific modulated signal such as a QPSK signal to estimate an I/Q regeneration parameter of the five-port network. The I/Q regeneration device of the five-port network including: a five-port network distributing an input signal as three signals and adding the three signals to first, second and third carrier signals, respectively to output first, second and third phase signals each having a phase different from one another; a power detection part detecting a power of each of the first, second and third phase signals from the five-port network to output first, second and third power detection signals; and a post-processing part restoring original data in response to the first, second and third power detection signals. | 08-28-2008 |
| 20100091742 | CORRELATION METHOD AND APPARATUS FOR ACQUIRING SYNCHRONIZATION IN WIRELESS LOCAL AREA NETWORK - Provides is a correlation method for acquiring a synchronization in a wireless local area network (WLAN). In the correlation method, an auto-correlation value is measured in a receive (RX) signal based on the WLAN standard by use of a successive partial short preambles. A time point when the auto-correlation value becomes smaller than a predetermined threshold value is detected. A cross-correlation value for the successive partial short preambles is measured from the time point when the auto-correlation value becomes smaller than the predetermined threshold value. A time point when the cross-correlation value becomes maximum is determined as a reference time point for synchronization acquisition. | 04-15-2010 |
Chang-Soo Han, Dajeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110024333 | Method for separating nanotubes using microwave radiation - A method for separating carbon nanotubes is disclosed where nanotubes with specific properties are separated from a mixture of nanotube products, which contains various types of nanotubes and impurities. | 02-03-2011 |
Chang-Soo Han, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110069274 | VISION ASSISTANCE DEVICE HAVING CONDUCTIVE TRANSPARENT THIN FILM - A vision assistance device includes a lens based on a transparent material, a conductive transparent thin film contacting the lens and containing carbon nanotubes, electrodes electrically connected to the conductive transparent thin film, and a portable power supply electrically connected to the electrodes. The vision assistance device prevents fogging and retains heat. | 03-24-2011 |
| 20110261346 | ULTRAVIOLET RAY DETECTION APPARATUS USING NANOCRYSTAL QUANTUM DOTS - An ultraviolet rays detection apparatus according to the present invention includes a color converting unit including nanocrystal quantum dots and having a color that is changed by irradiation of ultraviolet rays, and a non-color-converting unit disposed closer to the color converting unit and having a color that is not changed by the irradiation of the ultraviolet rays, thereby easily detecting the ultraviolet rays. | 10-27-2011 |
Chang-Soo Han, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090161047 | COLOR FILTER SUBSTRATE FOR LIQUID CRYSTAL DISPLAY AND METHOD FOR MANUFACTURING THE SAME - A color filter substrate for a liquid crystal display (LCD) includes a substrate having a non-pixel region and a pixel region, a black matrix and a light blocking color filter layered in the non-pixel region, and a color filter arranged in the pixel region. The light blocking color filter may be formed simultaneously with the color filter, and may include color filter material having light blocking properties at various wavelengths to supplement the light blocking properties of the black matrix. The light blocking color filter occupies a portion of the non-pixel region and has a thickness so that the black matrix in the non-pixel region may have a thickness that is less than a thickness of the color filter arranged in the pixel region. | 06-25-2009 |
| 20110264016 | WEARABLE ROBOT FOR ASSISTING MUSCULAR STRENGTH OF LOWER EXTREMITY - A wearable robot for assisting muscular strength of the lower extremity of a user: The wearable robot can be worn on user's legs and includes a central securing part, a hip joint part hingably coupled to either side of a lower end of the central securing part, a femur part fastened to the hip joint part and having rigidity, a knee part including an outer frame and a knee assistant, and a drive unit fastened to one of the hip joint part and the knee joint part to allow operation of the joint part. The outer frame includes an upper side outer frame fastened to a lower end of the femur part and a lower side outer frame fastened to the upper side outer frame by a rotatable knee joint part Both the upper side outer frame and the lower side outer frame are fastened to the knee assistant worn by the user. | 10-27-2011 |
| 20120276224 | COMPOUND COMPRISING EXTRACTS OR FRACTIONS OF CHRYSANTHEMUM BOREALE MAKINO HAVING ANTI-INFLAMMATION ACTIVITY - The present invention relates to a composition having an anti-inflammatory activity, comprising extracts or fractions of | 11-01-2012 |
Chang-Soo Han, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110223097 | Apparatus and method for manufacturing quantum dot - Disclosed is a technique of producing that a technique of producing quantum dots that are nano-size semiconducting crystals. An apparatus of producing quantum dots includes a mixer to mix different kinds of precursor solutions uniformly in a channel by diverging each precursor solution into a plurality of micro streams and joining the diverging micro streams individually with different kinds of micro streams, and a heating furnace to pass the precursor mixture solution discharged from the mixer therethrough to create and grow quantum dot nucleuses, thus producing quantum dots. The mixer may further include a heating unit allowing temperature adjustment. In addition, a buffer which is maintained at a relatively low-temperature is provided between the mixer and the heating furnace in order to prevent additional nucleation. Accordingly, quantum dots may be produced even at a high flow rate, which leads to mass-production of quantum dots. | 09-15-2011 |
| 20110253032 | APPARATUS FOR MANUFACTURING QUANTUM DOT WITH A PLURALITY OF HEATING ZONES AND METHOD FOR MANUFACTURING QUANTUM DOT - Disclosed is a technology of producing quantum dots that are nano-size semiconducting crystals. A quantum dot producing apparatus includes a mixer for mixing precursor solutions, and a heating furnace with a plurality of heating areas providing different temperature conditions to heat the precursor mixture. Between the heating areas, a buffer may be installed which provides a low-temperature condition to prevent addition nucleation. Through this configuration, nucleation is separated from nuclear growth, uniformity in particle size of quantum dots is improved, which enables the mass-production of quantum dots, rather than a quantum dot producing apparatus with a single heating area that provides a constant temperature condition. | 10-20-2011 |
Chang-Soo Kwak, Daejon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100090329 | HIGH-POWER DEVICE HAVING THERMOCOUPLE EMBEDDED THEREIN AND METHOD FOR MANUFACTURING THE SAME - Provided is a high-power device having a thermocouple (thermoelectric couple) for measuring the temperature of a transistor constituting a high-power device. The high-power device includes a heating element, a thermocouple formed adjacent to the heating element, and a dielectric body formed between the heating element and the thermocouple. | 04-15-2010 |
Chang-Soo Park, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090123148 | All-Optical CSMA/CD Apparatus In Base A Ethernet And The Method Therefor - The invention relates to an Ethernet-based all-optical carrier sense multiple access/collision detection apparatus and method, and more particularly, to an apparatus and method capable of checking by using mutual gain saturation whether distortion occurs in two or more optical signals due to mutual interference when the optical signals pass through a semiconductor optical amplifier (SOA) at the same time, amplifying the optical signals transmitted in the upward direction when no distortion occurs in the optical signals, and monitoring the occupation of a plurality of subscribers with respect to a common network when the plurality of subscribers want to use an optical Ethernet network. The Ethernet-based all-optical carrier sense multiple access/collision detection apparatus according to the invention includes: a plurality of optical network units (ONUs) that carry different optical signals on upstream waves λ and transmit the upstream waves λ; a power splitter (PS) that multiplexes the optical signals and transmits the multiplexed optical signals; and a central office (CO) that checks whether the multiplexed optical signals are distorted, amplifies some of the checked optical signals, returns the other optical signals, and monitors the occupation of the plurality of optical network units with respect to a common network. According to the invention, it is possible to dynamically check whether a collision between the optical signals passing through the common network occurs and whether the optical signals are successfully transmitted. Further, since the invention uses an all-optical type, the existing electric media access control (MAC) device is not needed, which results in a high-speed operation. In addition, the invention can be used for a plurality of subscribers using an inexpensive light source. Thus, the invention can be effectively used for an optical communication industry. | 05-14-2009 |
| 20100177372 | OPTICAL IMAGE MODULATOR, OPTICAL APPARATUS INCLUDING THE SAME, AND METHODS OF MANUFACTURING AND OPERATING THE OPTICAL IMAGE MODULATOR - Disclosed are an optical image modulator, an optical apparatus including the same, and methods of manufacturing and operating the optical image modulator. The optical image modulator includes a light amount increasing unit increasing the amount of forward light emission of an electric-optical unit. The light amount increasing unit includes a first reflector reflecting light, which travels from the inside of the electric-optical unit toward the optical-electric unit, to the electric-optical unit. The light amount increasing unit may further include a second light reflector reflecting light, which passes through the optical-electric unit without optical-electric conversion, to the optical-electric unit. | 07-15-2010 |
| 20100308211 | OPTOELECTRONIC SHUTTER, METHOD OF OPERATING THE SAME AND OPTICAL APPARATUS INCLUDING THE OPTOELECTRONIC SHUTTER - An optoelectronic shutter, a method of operating the same, and an optical apparatus including the optoelectronic shutter are provided. The optoelectronic shutter includes a phototransistor which generates an output signal from incident input light and a light emitting diode serially connected to the phototransistor. The light emitting diode outputs output light according to the output signal, and the output signal is gain-modulated according to a modulation of a current gain of the phototransistor. | 12-09-2010 |
| 20100321755 | OPTICAL MODULATOR, METHODS OF MANUFACTURING AND OPERATING THE SAME AND OPTICAL APPARATUS INCLUDING THE OPTICAL MODULATOR - An optical modulator, methods of manufacturing and operating the same, and an optical apparatus including the optical modulator are disclosed. The optical modulator includes an electro-optical converter and an optical-electric converter, stacked perpendicular to a substrate, and a gate transistor. The gate transistor gates a signal transmitted to the electro-optical converter from the optical-electric converter and allows charges generated in the optical-electric converter and charges remaining in the electro-optical converter to flow while bypassing the electro-optical converter when gating ON is performed. | 12-23-2010 |
| 20110181936 | OPTICAL MODULATOR - Optical modulator having wide bandwidth based on Fabry-Perot resonant reflection is disclosed. The optical modulator includes: a bottom Distributed Bragg Reflector (DBR) layer; a top DBR layer including at least one layer, and a modified layer; and an active layer disposed between bottom and top DBR layers, wherein the at least one layer includes at least one pair of a first refractive index layer having a first refractive index and a second refractive index layer having a second refractive index, the modified layer includes at least one pair of a third refractive index layer having a third refractive index and a fourth refractive index layer having a fourth refractive index, the third and the fourth refractive indexes being different, and at least one of the third and the fourth refractive index layers has a second optical thickness that is not λ/4 or that is not an odd multiple thereof. | 07-28-2011 |
Chang-Soo Pyon, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090251455 | Flat panel display and method of driving the flat panel display - A flat panel display sequentially supplying data signals to a pixel portion using a demultiplexer and a method of driving the flat panel sufficiently supply scan signals in a horizontal period to prevent deformation and distortion of the data signal supplied to each pixel and compensate for a threshold voltage of a drive transistor of the pixel. The flat panel display includes a pixel portion having a plurality of pixels, a scan driver to supply scan signals to the pixel portion, a data driver to generate data signals, a dimultiplexer portion to sequentially supply the data signals to the pixel portion, and a lighting tester to supply a lighting test signal and an initialization signal to the pixel portion. Alternatively, the flat panel display includes a pixel portion having a plurality of pixels, a scan driver to supply scan signals to the pixel portion, a data driver to output data signals and a dimultiplexer portion to sequentially supply an initialization signal and the data signal to the pixel portion. | 10-08-2009 |
Chang-Soo Pyon, Yongin-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20120176417 | EMISSION CONTROL LINE DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - An emission control line driver is capable of securing the stability of an output and of freely controlling the width of emission control signals. The emission control line driver includes a plurality of stages respectively coupled to emission control lines. Each of the stages includes a plurality of transistors that are configured to output the emission control signal. The width of the emission control signal may be controlled to correspond to the width of a start signal. Furthermore, a circuit structure of the stages is simplified. | 07-12-2012 |
| 20120313903 | ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display is disclosed. In one embodiment, the display includes pixels formed in every horizontal line, scan lines coupled to the pixels positioned in two horizontal lines, i data lines coupled to pixels positioned in odd horizontal lines, (i+1) data lines coupled to pixels positioned in even horizontal lines, and first and second emission control lines coupled to the pixels positioned in the two horizontal lines to supply first and second emission control signals, respectively. Each of the pixels includes a pixel circuit coupled to one of the data lines and one of the scan lines, a first organic light emitting diode (OLED) and a second OLED coupled to the pixel circuit to emit light to correspond to current supplied from the pixel circuit, and a selection unit for supplying current from the pixel circuit to the first or second OLED. | 12-13-2012 |
Chang-Soo Shin, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100322032 | APPARATUS AND METHOD FOR IMAGING SUBSURFACE STRUCTURE OF TARGET AREA BY USING WAVEFORM INVERSION - Provided are an apparatus and method for imaging the subsurface structure of a target area by using waveform inversion. In the apparatus and method, the subsurface structure of a target area is estimated using waveform inversion of a seismic signal in the frequency domain, the Laplace domain, or the Laplace-Fourier domain, and an objective function is defined by applying a weighting function such that the objective function makes a different contribution for each frequency, each Laplace damping constant, or each Laplace-Fourier damping constant. The objective function is not limited to a particular type of objective function and a weighting function can be automatically determined when a gradient vector for each frequency, each Laplace damping constant, or each Laplace-Fourier damping constant is normalized. In addition, a gradient direction for all frequencies can be defined by applying another weighting function to the sum of respective gradient vectors for all frequencies, all Laplace damping constants, or all Laplace-Fourier damping constants, wherein the weighting function can also be automatically determined by normalization. | 12-23-2010 |
Chang-Soo Woo, Uiwang-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100167203 | Resist underlayer composition and method of manufacturing semiconductor integrated circuit device using the same - A resist underlayer composition and a method of manufacturing a semiconductor integrated circuit device, the composition including a solvent and an organosilane polymer, the organosilane polymer being a condensation polymerization product of at least one first compound represented by Chemical Formulae 1 and 2 and at least one second compound represented by Chemical Formulae 3 to 5. | 07-01-2010 |
| 20120282776 | PHOTORESIST UNDERLAYER COMPOSITION AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE BY USING THE SAME - A photoresist underlayer composition includes a solvent, and a polysiloxane resin represented by Chemical Formula 1: | 11-08-2012 |
Chang-Soo Yu, Kyeongki-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090073245 | AN INK-CARTRIDGE FOR PRINTERS - The present invention relates to an ink-cartridge for printers comprising a body formed having a filling hole on an upper surface thereof; a plurality of filling chambers inside of the body divided by a partition having a connecting hole; a discharging chamber connected to the filling chamber; an air chamber connected to the filling chamber via an air transferring channel so as to supply air to the filling chamber; an air suction valve installed in the air chamber; an air inducing channel inducing external air to the air suction valve; a blocking film attached to one surface of the body; and a cover installed in the other surface of the body; and a pressure regulating part formed in a surface of an outer wall of the body and communicating with the filling chamber. | 03-19-2009 |
| 20110174950 | INK-CARTRIDGE LOADING/UNLOADING APPARATUS - The present invention relates to an ink-cartridge loading/unloading apparatus used in various devices onto which an ink-cartridge is capable of minimizing damage of a flexible printed wiring board of the ink-cartridge. The ink-cartridge loading/unloading apparatus according to the present invention comprises a vertically extending main body having a support portion; a mounting part connected to the front surface of the main body; and a coupling part connecting the main body and the mounting part. A metal coupling bar or a magnetic substance inserted in a coupling bar is attached to an electromagnet provided in a side of the main body, whereby the mounting part is coupled to the main body. The mounting part is released from a coupled state by pressing a button bar with an external force, and an elastic means is further provided between the mounting part and the main body. | 07-21-2011 |