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Joon Hyung

Joon Hyung Kim, Daejeon KR

Patent application numberDescriptionPublished
20090117867SCALABLE BANDWIDTH SYSTEM AND METHOD OF CONTROLLING TUNABLE FILTER - The present invention relates to a scalable bandwidth system and a method of controlling a tunable filter. In the present invention, the scalable bandwidth system inputs, as a control signal of a tunable filter, a voltage corresponding to a section in which the capacitance according to an applied voltage is not practically changed for characteristics of varactor diodes, and inputs each control bit of the control signal to each varactor diode of the tunable filter to adjust the capacitance of each of the varactor diodes, and consequently adjusts the capacitance of the tunable filter by adding the capacitance of the varactor diodes.05-07-2009
20090140821APPARATUS AND METHOD FOR COMPENSATING CARRIER FEEDTHROUGH IN QUADRATURE MODULATION SYSTEM - The present invention relates to an apparatus and a method for compensating carrier feedthrough in a quadrature modulation system. In order to suppress the carrier feedthrough, and minimize and compensate the carrier feedthrough, differences of baseband differential input DC voltages in an in-phase as well as a quadrature-phase are simultaneously adjusted to 0 or a certain slight voltage difference by a simple analog circuit. Therefore, it is possible to suppress carrier feedthrough using a simple analog type apparatus for compensating carrier feedthrough, and simply achieve an apparatus for carrier feedthrough using a variety of quadrature modulators.06-04-2009
20100045731APPARATUS AND METHOD FOR INSPECTING DROPLET DISCHARGE CHARACTERISTICS OF INK-JET PRINTED HEAD - An apparatus for inspecting droplet discharge characteristics of an ink-jet printer head, subsequently discharging ink droplets, includes a photographing means for operating a digital camera to generate an overlapped droplet image for ink droplets at a photographing point before each subsequently discharged ink droplet hits a target point; a light emitting means for operating a speed light to give light to an ink droplet passing the photographing point after a delay time from an ink droplet discharging time point; and a droplet discharge characteristic inspecting means for calculating a signal-to-noise ratio distribution of each pixel of the overlapped droplet image, calculating an overlap rate of droplet images of each pixel from the signal-to-noise ratio distribution to calculate a center coordinate of droplet images, and quantitatively calculating and outputting deviation to droplet jetting velocity and direction using the center coordinate of droplet image, a droplet jetting coordinate and the delay time.02-25-2010
20100118744WIRELESS TRANSCEIVER SYSTEM FOR SUPPORTING DUAL MODE - The present invention relates to a wireless transceiver system for supporting a dual mode, and more particularly to a wireless transceiver system for supporting a dual mode that simultaneously supports the Frequency Division Duplex (FDD) method and the Time Division Duplex (TDD) method in a certain frequency band. The present system supports the FDD system conducting transmission and reception simultaneously by using different frequency bands for transmission and reception as well as the TDD system temporally alternating transmission and reception by using the common frequency band among an upper frequency band and a lower frequency band used in the FDD system as well as another frequency band adjacent thereto, thereby selectively supporting both of the two communication systems in a wireless transceiver system. Therefore, efficient use of various wireless communication standards and the limited frequency resource is provided, and on this basis, an efficient application of all wireless transceiver systems adopting the TDD system and the FDD system as well as the mobile communication base station and the terminal is provided.05-13-2010
20100146021MODULAR-3 CALCULATION APPARATUS AND METHOD - A modular-3 calculation method for binary number includes: determining whether two 1s consecutive from MSB exist in a binary number, when a target value for modular-3 calculation is inputted, and generating a first binary number by substituting the two 1s with 0 whenever the consecutive two 1s exist; performing a modular-3 calculation on the first binary number; and determining the result of the modular-3 calculation.06-10-2010
20110059707BIAS MODULATION APPARATUS, AND APPARATUS AND METHOD FOR TRANSMITTING SIGNAL FOR WIDEBAND MOBILE COMMUNICATION USING THE SAME - In a wideband mobile communication system, a signal transmitting apparatus separates an envelope curve signal which is size information and a phase signal which is phase information from a signal to transmit, and compares the envelope curve signal with a predetermined voltage. The signal transmitting apparatus performs active bias control that amplifies and outputs an envelope curve signal according to different driving voltages based on a comparison result, and supplies a bias voltage to a power amplifier that amplifies a phase signal based on the amplified signal.03-10-2011

Patent applications by Joon Hyung Kim, Daejeon KR

Joon Hyung Park, Seoul KR

Patent application numberDescriptionPublished
20080198305POLARIZER, METHOD OF FABRICATING THE SAME AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - Disclosed are a polarizer, a method for fabricating the same, and a liquid crystal display having the same. The liquid crystal display includes a liquid crystal panel and a polarizer attached to the liquid crystal panel. The polarizer includes a polarizing film, a first support film, and a second support film. The first support film has optical anisotropy and is attached to the polarizing film. The first support film has a first thickness. The second support film is attached to the polarizing film while facing the first support film and has a second thickness, which is greater than the first thickness. The polarizer is fabricated by evaporating a solvent from a solution including polymer resin to form an optical film and then elongating the optical film.08-21-2008
20080236743APPARATUS FOR REMOVING A POLARIZER AND METHOD THEREOF - An apparatus for removing a polarizer of a liquid crystal display includes a roller portion including a rotating exfoliating roller and a gripping portion disposed on the exfoliating roller and gripping an edge of the polarizer, and a roller moving portion exfoliating the polarizer from a liquid crystal panel, the roller moving portion rotating and moving the roller portion. A rotating direction of the exfoliating roller is the same as a moving direction of the exfoliating roller.10-02-2008
20080266226DISPLAY DEVICE - A display device includes a display panel assembly and a backlight assembly. The display panel assembly includes a main panel unit and a sub panel unit facing the main panel unit. The backlight assembly emits light to the display panel assembly. The main panel unit includes a color filter and displays an image in chromatic and achromatic colors, and the sub panel unit displays an image only in an achromatic color.10-30-2008
20080268182ADHESIVE, POLARIZER ASSEMBLY AND DISPLAY DEVICE - A liquid crystal display device includes an LCD panel, a polarizer assembly having a polarizer and a compensation film, and an adhesive layer. The adhesive layer adheres the polarizer assembly to the LCD panel and has an exfoliation force of 16 N/25 mm to 28 N/25 mm. The adhesive layer is formed of acryl polymer and a crosslinking agent with a respective weight ratio of 75:25 to 90:10, or about 85:15.10-30-2008
20080291368Display Device Comprising Multiple Display Panel Assemblies - A display device includes a first and second display panel assembly. The first panel assembly includes a first substrate, a second substrate opposite to the first substrate, a liquid crystal layer formed between the first substrate and the second substrate, a color filter formed on the first substrate or the second substrate, and a first light blocking member formed on the first substrate or the second substrate. The second panel assembly includes a third substrate, a fourth substrate opposite the third substrate, and a liquid crystal layer formed between the third substrate and the fourth panel. The second panel assembly does not have a color filter. The first panel assembly and the second panel assembly are overlapped with each other. Accordingly, the moiré interference effects may be prevented.11-27-2008
20100225841LIQUID CRYSTAL DISPLAY - A liquid crystal display includes a first substrate; a second substrate facing the first substrate; a pair of field generating electrodes disposed on at least one of the first and the second substrates; and a liquid crystal layer disposed between the first and the second substrates; wherein the liquid crystal layer includes a liquid crystal composition including a polar compound, the polar compound including a compound represented by Formula 1:09-09-2010
20100321614POLARIZER, METHOD OF FABRICATING THE SAME AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - Disclosed are a polarizer, a method for fabricating the same, and a liquid crystal display having the same. The liquid crystal display includes a liquid crystal panel and a polarizer attached to the liquid crystal panel. The polarizer includes a polarizing film, a first support film, and a second support film. The first support film has optical anisotropy and is attached to the polarizing film. The first support film has a first thickness. The second support film is attached to the polarizing film while facing the first support film and has a second thickness, which is greater than the first thickness. The polarizer is fabricated by evaporating a solvent from a solution including polymer resin to form an optical film and then elongating the optical film.12-23-2010

Patent applications by Joon Hyung Park, Seoul KR

Joon Hyung Shim, Seoul KR

Patent application numberDescriptionPublished
20110027694Solid-oxide fuel cells with concentric laminating electrolytes in a nanoporous membrane - A solid oxide fuel cell with an electrolyte membrane having one or more layers with interfaces perpendicular to the surfaces of the membrane is provided. The layers can be deposited on vertical walls of holes in a nanoporous membrane until the layers fully fill the holes, thereby forming superlattices in the holes. The final shape of the superlattices in this example will be concentric, laminating layers as seen in a top view looking down on the membrane. According to one aspect, conventional electrodes can be deposited on both sides of the membrane for current collection and surface charge transfer reactions.02-03-2011