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Chang Hoon
Chang Hoon Baek, Suwon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080315780 | LIGHT EMITTING DIODE DRIVING DEVICE - There is provided an integrated LED driving device including: a DC/DC converting part converting and outputting a DC voltage inputted from the outside by switching of a switch into a driving voltage of a magnitude suitable for driving a plurality of LED arrays; a constant current controlling part receiving at least one of information on the current flowing through the LED array and information on a voltage applied to the LED array by feed-back, the constant current controlling part including a PWM controller PWM-controlling a switching duty of the switch of the DC/DC converting part, and controlling a switching duty of each of the switches of the switching part to allow the current to flow through the LED array with a predetermined magnitude; and a control logic receiving a control signal by a user and controlling the PWM controller in response to the control signal. | 12-25-2008 |
| 20090316386 | PLANAR LIGHT SOURCE AND BACKLIGHT UNIT INCLUDING THE SAME - A planar light source and a backlight unit including the same are disclosed. The planar light source includes a light emission region formed by arrangements of light emitting devices. The light emission region includes first to n | 12-24-2009 |
| 20100039795 | PLANAR LIGHT SOURCE AND BACKLIGHT UNIT HAVING THE SAME - A light source includes first to nth light emitting modules (n is a natural number that is two or more than two) each having a plurality of light emitting elements and connectors that are electrically connected to the light emitting elements. The connector of the first light emitting module is disposed near an angular point (hereinafter, referred to as “rotational central point”) of a region defining the first light emitting module. The light emitting elements and connector of the i | 02-18-2010 |
Chang Hoon Han, Wonju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110103120 | BINRAY CONTENT ADDRESSABLE MEMORY - The present invention relates to a binary content addressable memory (CAM), and more particularly, to a binary content addressable memory (CAM) in which the number of transistors constituting the content addressable memory can be reduced to decrease the size of the content addressable memory, thereby increasing the degree of integration and improving power consumption. According to the present invention, since the binary content addressable memory according to the present invention has a smaller number of transistors than those of the conventional binary content addressable memory, a memory can be fabricated in a smaller size, thereby improving the degree of integration as one of most important factors in the memory design. In addition, improvement of the degree of integration contributes to miniaturization and lightweightness of the product in its design. Further, the inventive binary content addressable memory performs its own function using a smaller number of transistors, thereby reducing power consumption. | 05-05-2011 |
Chang Hoon Jeon, Gyeongsangbuk-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090206770 | LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed herein are a light emitting display device which can reduce hysteresis of a driving transistor to improve picture quality, and a method for driving the same. The device includes a pixel cell formed in an area defined by a data line supplied with a data voltage, at least one scan line supplied with a scan signal, a light emission control signal line supplied with a light emission control signal, a driving voltage line supplied with a driving voltage, and a compensation voltage line supplied with a compensation voltage of a first voltage level or a second voltage level different from the first voltage level. The pixel cell includes a light emitting element for emitting light by current, and a pixel circuit for providing current corresponding to the data voltage to the light emitting element using the data voltage, scan signal, light emission control signal, driving voltage and compensation voltage. | 08-20-2009 |
Chang Hoon Jeon, Kumi-Shi KR
| Patent application number | Description | Published |
|---|---|---|
| 20090207107 | Electro-luminescence display device - An electro-luminescence display device and a method of driving the same for controlling a full white brightness depending upon a brightness of the external environment and thus controlling a brightness mode is disclosed. An electro-luminescence display device according to the present invention comprising: a display panel having pixels light-emitted by a supplied current; a data driver for applying a data voltage corresponding to said current to the pixels; and a timing controller for dividing one frame into a plurality of sub-frames and applying said data voltage corresponding to each of the plurality of sub-frames to the data driver and for controlling an emission time of each frame. | 08-20-2009 |
Chang Hoon Jeon, Chilgok-Gun KR
| Patent application number | Description | Published |
|---|---|---|
| 20090167648 | Luminescence display and driving method thereof - A OLED display and a driving method thereof are disclosed. The OLED display includes: an OLED display panel including: data lines to which data voltages are supplied; gate lines to which a gate voltage is sequentially supplied; luminescence control lines to which a luminescence control voltage is sequentially supplied, a driving power line to which a driving voltage is supplied; a compensation power line to which a compensation voltage having a first level and a second level different from the first level are supplied; a plurality of pixel cells each respectively in pixel areas defined by the data lines and the gate lines; a data driver having output lines whose number is smaller than the number of the data lines; and a demultiplexer unit formed between the data driver and the OLED display panel, the demultiplexer unit supplying the data voltages from the output lines to the data lines, wherein each of the pixel cells includes: a light emitting element; and a pixel driver that supplies a current corresponding to a corresponding one of the data voltages to the light emitting element based on the corresponding data voltage, the gate voltage, the luminescence control voltage, the driving voltage and the compensation voltage having the first level and that turns off the light emitting element when the compensation voltage has the second level. | 07-02-2009 |
Chang Hoon Kang, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100285199 | SUGAR-FREE JELLY COMPRISING GELATIN - The present invention relates to a sugar-free jelly composition using gelatin, more specifically, a sugar-free jelly composition obtained by replacing sugars such as sugar, fructose, and starch syrup used for manufacturing a conventional jelly with sugar alcohols and mixing them in a suitable mixing ratio for the prevention and treatment of obesity, diabetes, and tooth decay as well as maintaining the sweetness and the quality contained in the conventional sugar jellies. | 11-11-2010 |
Chang Hoon Kim, Seongnam-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100175099 | IPTV receiver and method for controlling an application in the IPTV receiver - An IPTV and a method for controlling a video widget in the IPTV are disclosed. Herein, a method for providing a video widget application includes playing-back a video content within an IP packet, executing a video widget application, and selecting a specific area of the video content being played-back, and outputting an object guide including an object list included in the selected specific area. The method also includes selecting at least one object from the object guide, selecting a video filter to be applied to the at least one selected object from the video Widget application, and applying the selected video filter to the at least one selected object. | 07-08-2010 |
Chang Hoon Kim, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20120113562 | DIELECTRIC COMPOSITION HAVING HIGH DIELECTRIC CONSTANT, MULTI LAYERED CERAMIC CONDENSERS COMPRISING THE SAME, AND METHOD OF PREPARING FOR MULTI LAYERED CERAMIC CONDENSERS - A dielectric composition having a high dielectric constant, multi layered ceramic condensers comprising the same, and a method of preparing for multi layered ceramic condensers. The dielectric composition includes: a compound represented by general formula (Ba | 05-10-2012 |
| 20120128865 | APPARATUS FOR FORMING ELECTRODE AND METHOD FOR FORMING ELECTRODE USING THE SAME - Disclosed herein is an apparatus for forming an electrode on a surface of a ceramic laminate. The apparatus for forming an electrode includes: a blast surface plate having ruggedness to which an electrode material paste is applied; and a moving device moving a ceramic laminate so that the ceramic laminate contacts the blast surface plate. | 05-24-2012 |
Chang Hoon Kim, Seongam-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100180314 | IPTV receiver and an method of managing video functionality and video quality on a screen in the IPTV receiver - An IPTV receiver and a method for managing video functionality and video quality on a screen in the IPTV receiver are disclosed. Herein, a method includes downloading a widget application from a server, executing the downloaded widget application at a browser, requesting a video test stream through the executed widget application to the server and managing the video functionality and the video quality on the screen using the video test stream. | 07-15-2010 |
Chang Hoon Park, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100015187 | MACRO-SIZED LIPID CAPSULE EMULSION COMPOSITION AND COSMETIC COMPOSITION CONTAINING THE SAME - An emulsion composition of the invention has macro-sized (0.01 to 5 mm) lipid capsule particles and it is for a skin cosmetic composition. An emulsion composition of the invention exhibits improved stability for its particle size by adjusting a size of the particle through a combination of liquid phase oil and integument lipid or lipoid material and encapsulating the liquid phase oil with the integument lipid. The emulsion composition of the invention has unique outward appearance and use feeling due to the macro-sized particles in it, also exhibits excellent skin safety and moisture persistence by containing no surfactant and maintains an activity of an oleophilic effective ingredient which is apt to be oxidized for a long time. | 01-21-2010 |
Chang Hoon Shin, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090060810 | Preparation Method of Vanadium/Titania-Based Catalyst Showing Excellent Nitrogen Oxide-Removal Performance at Wide Temperature Winow Through Introduction of Ball Milling, and Use Thereof - Disclosed are a method for preparing a catalyst, which has excellent nitrogen oxide-removal performance and resistance over a wide temperature range, and the use of the catalyst. According to the disclosed method, the oxidation number and surface defects of the catalyst are changed by applying artificial high energy through mechanical ball milling during the preparation process of the catalyst, instead of applying the addition of a precious metal, the deformation of a support and the use of a co-catalyst in order to increase NOx removal activity, such that activation energy for inducing redox reactions can be decreased. | 03-05-2009 |
Chang Hoon Yang, Cheonan-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080232024 | METALIZED PLASTIC FILM FOR FILM CAPACITOR AND FILM CAPACITOR - A metalized plastic film for a rolled film capacitor or a laminated film capacitor and a film capacitor are disclosed. The metalized plastic film having a plastic film and an electrode metal deposited on the plastic film and patterned for a film capacitor includes rectangular split electrodes extending from a margin region defined at one side of the plastic film as a region free of the deposited electrode metal toward an opposite side of the plastic film, to have a length corresponding to about one fourth to four fifth of a width of the plastic film, the split electrodes being continuously arranged at specified intervals in a longitudinal direction of the plastic film, fuse portions each formed in an associated one of the split electrodes between the margin region and an electrode metal contacting region of the associated split electrode. Therefore, it is possible to reduce self-heating of the film capacitor and prevent capacitance of the film capacitor from decreasing due to an operation of the fuse portions, thereby ensuring safety of the capacitor, scaling down the capacitor and using the capacitor at a high temperature. | 09-25-2008 |
| 20080278888 | METALLIZED PLASTIC FILM AND FILM CAPACITOR - A metallized plastic film is formed by winding two sheets of film vapor-deposited with an electrode metal as one group and a film capacitor, comprising; three individual splittings of electrode metal by predetermined width and length and then adjoining of splitting parts. Accordingly, self-heating of the film capacitor can be restrained and a capacitance reduction rate caused by the operation of the fuse parts can be reduced. | 11-13-2008 |
| 20090229849 | BUS-BAR FOR JOINTING CAPACITOR - A bus-bar for assembling a capacitor device is disclosed, which is capable of improving the environment of a soldering operation for the bus-bar being soldered to a capacitor device, reducing the inferior rate of the capacitor device while improving the quality of the capacitor device, and reducing the weight of the capacitor module, in soldering the bus-bar to capacitor devices. The lead frame attached to polar plates by soldering is formed thinner than the other parts of the bus-bar, and opening parts having an oval or polygonal shape are formed on a surface of the bus-bar so that two adjoining capacitor devices can be exposed. The lead frame is formed in the opening in order for soldering with the polar plates of the capacitor device. | 09-17-2009 |
| 20110181998 | DEPOSITED FILM AND FILM CAPACITOR USING THE SAME - There is provided a deposited film for a film capacitor, which comprises: a thermally sprayed metal contact part formed at one end of a dielectric in a width direction of the dielectric, and a margin part having no deposited metal formed at the other end of the dielectric in the width direction of the dielectric; a split electrode in a rectangular shape formed by forming a T-shaped window margin, from the margin part to a predetermined position within a width range of the deposit film, in the width direction of the deposited film; and a fuse part formed between the split electrodes in the width direction of the deposited film, wherein adjacent fuse parts in the length direction of the deposited film are formed in a stepped layout in the width direction of the deposited film. | 07-28-2011 |
Chang Hoon Yang, Cheonan KR
| Patent application number | Description | Published |
|---|---|---|
| 20100000089 | Method for Connecting Bus Bar on Capacitor and Product Fabricated by the Same - Disclosed are a method for connecting a bus bar of a capacitor, improving temperature characteristics and reliability of the capacitor by reducing inductance and impedance such that heat generation is restrained during use of the capacitor, and a product fabricated by the same. | 01-07-2010 |
Chang-Hoon Jeon, Osan-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100140692 | METHODS OF FABRICATING SEMICONDUCTOR DEVICES HAVING MULTIPLE CHANNEL TRANSISTORS AND SEMICONDUCTOR DEVICES FABRICATED THEREBY - In methods of fabricating a semiconductor device having multiple channel transistors and semiconductor devices fabricated thereby, the semiconductor device includes an isolation region disposed within a semiconductor substrate and defining a first region. A plurality of semiconductor pillars self-aligned with the first region and spaced apart from each other are disposed within the first region, and each of the semiconductor pillars has at least one recessed region therein. At least one gate structure may be disposed across the recessed regions, which crosses the semiconductor pillars and extends onto the isolation region. | 06-10-2010 |
Chang-Hoon Jeon, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20120127150 | Organic Light Emitting Diode Display Device and Method for Driving the Same - The present invention an organic light emitting diode display device includes a display panel having a plurality of pixel regions, a gate driving unit for driving gate lines and light emitting control lines of the display panel, a data driving unit for driving data lines of the display panel, a power supply unit for supplying first and second power signals to power lines of the display panel as well as a compensating voltage to a compensating power line, and a timing controller for controlling the gate and data driving units for displaying an image with a data voltage compensated with the compensating voltage and controlling the power supply unit to supply the compensating voltage after converting a level of the compensating voltage just before display of a first image on the display panel at an initial driving. | 05-24-2012 |
Chang-Hoon Jeong, Gunpo-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110304300 | CHARGING DEVICE FOR PORTABLE TERMINAL - A charging device for a portable terminal is provided. The charging device includes a charging cradle for mounting the portable terminal or a battery pack for the portable terminal, a multi-plug adapted to be mounted by being inserted into the charging cradle, hook holes formed in the charging cradle, and hooks adapted to be engaged with the hook holes, wherein the direction for inserting the multi-plug into the charging cradle and the direction for connecting the multi-plug to an external receptacle are perpendicular to each other. In accordance with an exemplary embodiment of the present invention, by producing charging cradles adapted to be commonly used worldwide, and by localizing multi-plugs by countries or cities, i.e., by providing each country or city with multi-plugs adapted to be suitably used in such a country or a city, a user can use his or her charging device by only buying a multi-plug available in a country or a city where the user stays if it is desired. | 12-15-2011 |
Chang-Hoon Kang, Yeosu-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110172483 | OXIDE CATALYST AND PHOSPHORIC OXIDE CATALYST FOR HYDROCARBON STEAM CRACKING, METHOD FOR PREPARING THE SAME AND METHOD FOR PREPARING OLEFIN BY USING THE SAME - The present invention relates to an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking, method for preparing the same and a method for preparing olefin by using the same. More precisely, the present invention relates to an oxide catalyst for hydrocarbon steam cracking represented by formula 1 and a phosphoric oxide catalyst for hydrocarbon steam cracking represented by formula 3 which would be used for the production of olefin such as ethylene and propylene by hydrocarbon steam cracking, and a method for preparing the same. The present invention provides an oxide catalyst and a phosphoric oxide catalyst for hydrocarbon steam cracking that has excellent thermo-stability at high temperature and improved olefin yield. | 07-14-2011 |
| 20120108416 | CATALYST FOR HYDROCARBON STEAM CRACKING, METHOD OF PREPARING THE SAME AND METHOD OF PREPARING OLEFIN BY USING THE SAME - A catalyst for hydrocarbon steam cracking for the production of light olefin, a preparation method of the catalyst and a preparation method of olefin by using the same. More precisely, the present invention relates to a composite catalyst prepared by mixing the oxide catalyst powder represented by CrZrjAkOx (0.5≦j≦120, 0≦k≦50, A is a transition metal, x is the number satisfying the condition according to valences of Cr, Zr and A, and values of j and k) and carrier powder and sintering thereof, a composite catalyst wherein the oxide catalyst is impregnated on a carrier, and a method of preparing light olefin such as ethylene and propylene by hydrocarbon steam cracking in the presence of the composite catalyst. The composite catalyst of the present invention has excellent thermal/mechanical stability in the cracking process, and has less inactivation rate by coke and significantly increases light olefin yield. | 05-03-2012 |
| 20120108417 | CATALYST FOR HYDROCARBON STEAM CRACKING, METHOD OF PREPARING THE SAME AND METHOD OF PREPARING OLEFIN BY USING THE SAME - The present invention relates to a catalyst for hydrocarbon steam cracking for the production of light olefin, a preparation method of the catalyst and a preparation method of olefin by using the same. More precisely, the present invention relates to a composite catalyst prepared by mixing the oxide catalyst powder represented by CrZrjAkOx (0.5≦j≦120, 0≦k≦50, A is a transition metal, x is the number satisfying the condition according to valences of Cr, Zr and A, and values of j and k) and carrier powder and sintering thereof, a composite catalyst wherein the oxide catalyst is impregnated on a carrier, and a method of preparing light olefin such as ethylene and propylene by hydrocarbon steam cracking in the presence of the composite catalyst. The composite catalyst of the present invention has excellent thermal/mechanical stability in the cracking process, and has less inactivation rate by coke and significantly increases light olefin yield. | 05-03-2012 |
Chang-Hoon Kang, Jeollanam-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090105066 | Catalyst for hydrocarbon steam cracking, method of preparing the same and method of preparing olefin by using the same - The present invention relates to a catalyst for hydrocarbon steam cracking for the production of light olefin, a preparation method of the catalyst and a preparation method of olefin by using the same. More precisely, the present invention relates to a composite catalyst prepared by mixing the oxide catalyst powder represented by CrZrjAkOx (0.5≦j≦120, 0≦k≦50, A is a transition metal, x is the number satisfying the condition according to valences of Cr, Zr and A, and values of j and k) and carrier powder and sintering thereof, a composite catalyst wherein the oxide catalyst is impregnated on a carrier, and a method of preparing light olefin such as ethylene and propylene by hydrocarbon steam cracking in the presence of the composite catalyst. The composite catalyst of the present invention has excellent thermal/mechanical stability in the cracking process, and has less inactivation rate by coke and significantly increases light olefin yield. | 04-23-2009 |
Chang-Hoon Oh, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100200767 | OPTICAL APPARATUS FOR PLASMA - An optical apparatus for plasma includes a light collection lens provided to receive optical emission spectrum from plasma, a first aperture stop disposed between the light collection lens and the plasma to block out-focused light, a second aperture stop disposed between the light collection lens and an imaging area of the light collection lens to block in-focused light, and a pinhole disposed at the imaging area of the light collection lens to limit depth of focus. | 08-12-2010 |
Chang-Hoon Shin, Daeojon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090086388 | CONTROL METHOD FOR PREVENTING MALFUNCTION OF OVER CURRENT GROUND RELAY DUE TO REVERSE POWER - A control method for preventing malfunction of an over current ground relay is disclosed. The control method includes: determining directions of per-phase power flows by measuring the magnitudes and phases of per-phase voltages and currents in an electric power system; checking occurrence of a load fault or a power source fault using the determined directions of per-phase power flows; and controlling an over current ground relay (OCGR) or an over current relay (OCR) to transmit a trip signal to a circuit breaker, after, upon occurrence of a load fault, checking occurrence of a ground fault and checking occurrence of a short circuit fault, and, upon occurrence of a power source fault, checking occurrence of a short circuit fault without checking occurrence of a ground fault, by turning on or off the OCGR or the OCR according to occurrence of a ground fault or a short circuit fault. | 04-02-2009 |
Chang-Hoon Shin, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110035077 | Distribution automation system for reactive power compensation and its voltage control method - Provided are a novel distribution automation system and its voltage control method, which can supply a stable voltage to a user by properly adjusting the settings of a control device so as to compensate for reactive power at each load terminal. The voltage control method includes: a first step of modeling a distribution system in the form of a distribution load based on constants of four terminals according to the connection type of each node and a distribution line, which constitute the distribution system; a second step of determining a formula for estimating the magnitude of a voltage at a node from a current value of an adjacent node; a third step of determining an objective function including the magnitude of the voltage, calculated through the formula determined in the second step, and a control variable for controlling the magnitude of the voltage; and a fourth step of calculating a value of the control variable to allow the determined objective function to have a minimum value and applying the calculated value to each voltage control device provided in the distribution system. | 02-10-2011 |
| 20120036355 | Method and system for encrypting and decrypting transaction in power network - Disclosed herein is a method and system for universally encrypting and decrypting a transaction which is a functional unit in a power network, while reducing a system load. When a transmitting node encrypts a transaction, the serial number of the transaction corresponding to each piece of data included in the transaction is present, and data is selected either using a predetermined criterion or randomly, and is then encrypted. The transaction serial number is added to the encrypted data. A receiving node selects data to be decrypted using the transaction serial number or a predetermined criterion. Through this operation, encryption has been conducted from the standpoint of the transaction, but only part of the data is encrypted based on a probability from the standpoint of the data, so that a system load is reduced, thus enabling efficient encryption and decryption technologies to be implemented. | 02-09-2012 |