Patent application number | Description | Published |
20110215981 | HIGH FREQUENCY TRANSMISSION MODULE WITH IMPROVED HARMONIC FEATURE - There is provided a high frequency transmission module, including: a high band power amplifier amplifying power of a preset high band frequency signal; a low band power amplifier amplifying power of a preset low band frequency signal; an LC matching circuit unit matching output impedance of the low band power amplifier to impedance of an antenna switch circuit; the antenna switch circuit connecting one of a first terminal connected to an output terminal of the high band power amplifier and a second terminal connected to the LC matching circuit unit to a common terminal; and a matching/ESD protecting unit matching impedances between the antenna switch circuit and an antenna and blocking static electricity introduced from the antenna. | 09-08-2011 |
20120038420 | COMMUNICATIONS CIRCUIT FOR REDUCING CROSSTALK - There is provided a communications circuit for reducing crosstalk. The communications circuit for reducing crosstalk may include: a conductive power supply pattern supplying driving power applied from the outside; a first transformer implemented as an integrated passive device (IPD) type having a first input conductive line receiving a first signal of a low-frequency band received from a first power amplifier and a first output conductive line close to the first input conductive line and electromagnetically coupled with the first input conductive line, and receiving the driving power supplied from the conductive power supply pattern through a terminal formed on the first input conductive line; and a second transformer implemented as the IPD type having a second input conductive line receiving a second signal of a high-frequency band received from a second power amplifier and a second output conductive line close to the second input conductive line and electromagnetically coupled with the second input conductive line, and receiving the driving power supplied from the conductive power supply pattern through a terminal formed on the second input conductive line, and the conductive power supply pattern may include an inductor component. Therefore, crosstalk between the low-frequency band and the high-frequency band can be reduced. | 02-16-2012 |
20120249262 | POWER COMBINER, POWER AMPLIFYING MODULE HAVING THE SAME, AND SIGNAL TRANSCEIVING MODULE - There are provided a power combiner implemented by a printed circuit board, a power amplifying module having the same, and a signal transceiving module. The power combiner includes: a primary wiring unit formed on one surface of a printed circuit board, receiving a plurality of balance signals having positive balance signals and negative balance signals, and including a plurality of positive primary wirings and a plurality of negative primary wirings, wherein the plurality of positive primary wirings are spaced apart from each other by a predetermined interval, the plurality of negative primary wirings are spaced apart from each other by a predetermined interval, one ends of the plurality of positive primary wirings are connected in common to thereby receive the plurality of positive balance signals, one ends of the plurality of negative primary wirings are connected in common to thereby receive the plurality of negative balance signals, and the other ends of the plurality of positive primary wirings and the other ends of the plurality of negative primary wirings are connected to each other to thereby form a loop; and a secondary wiring unit formed on the other surface of the printed circuit board, and including a secondary wiring combining powers of the plurality of balance signals from the primary wirings forming the loop to thereby output a single end signal. | 10-04-2012 |
20130072187 | DUAL MODE COMMUNICATIONS DEVICE AND METHOD OF IMPROVING DATA RATE THEREOF - There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit | 03-21-2013 |
20130129163 | FINGERPRINT SENSOR AND METHOD OF OPERATING THE SAME - There are a fingerprint sensor and a method of operating the same. The fingerprint sensor includes: a fingerprint sensing unit sensing a fingerprint coming into contact with one surface of a substrate; a light source provided at a first end of the substrate; and a light detection unit provided at a second end of the substrate and detecting light emitted from the light source, wherein the first and second ends correspond to both ends of the one surface of the substrate with which the fingerprint comes into contact, respectively, and bio-information of an object coming into contact with the one surface of the substrate is determined by using light detected by the light detection unit. | 05-23-2013 |
20130133428 | FINGERPRINT DETECTION SENSOR AND METHOD OF MANUFACTURING THE SAME - There are provided a fingerprint detection sensor and a method of manufacturing the same. The fingerprint detection sensor includes a plurality of piezoelectric sensors arranged in an array on a two-dimensional plane and having a predetermined height; a filler provided to surround the plurality of piezoelectric sensors and isolating vibrations between the plurality of piezoelectric sensors; and a control unit discharging predetermined output signals through the piezoelectric sensors to detect information of an object in contact with, or close to, the plurality of piezoelectric sensors, wherein the plurality of piezoelectric sensors include first surfaces and second surfaces disposed on both ends thereof in a height direction and areas of the first surfaces and the second surfaces are different from each other. | 05-30-2013 |
20130135247 | TOUCH SENSING APPARATUS - There is provided a touch sensing apparatus including a panel unit in which a plurality of electrodes intersecting with each other are disposed; and a control unit sensing changes in capacitance generated in regions in which respective electrodes, among the plurality of intersecting electrodes, intersect, wherein the panel unit includes a first region in which the plurality of electrodes are disposed with a first interval therebetween, and a second region in which the plurality of electrodes are disposed with a second interval therebetween, and the control unit senses a fingerprint touching the second region based on a change in capacitance generated therein. | 05-30-2013 |
20130136321 | FINGERPRINT DETECTION SENSOR AND METHOD OF DETECTING FINGERPRINT - There is provided a fingerprint detection sensor and a method of detecting a fingerprint. The fingerprint detection sensor according to embodiments of the present invention includes a plurality of piezoelectric sensors arranged on a two-dimensional plane; and a fingerprint detection unit detecting a fingerprint by using ultrasonic signals discharged from the plurality of respective piezoelectric sensors, wherein the fingerprint detection unit determines whether the fingerprint is a forged fingerprint by detecting bloodstreams within a first region on the two-dimensional plane in which the ultrasonic signals discharged from the plurality of respective piezoelectric sensors overlap one another. | 05-30-2013 |
20140221041 | DUAL MODE COMMUNICATIONS DEVICE AND METHOD OF IMPROVING DATA RATE THEREOF - There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit | 08-07-2014 |
Patent application number | Description | Published |
20130107422 | MULTILAYERED CERAMIC ELECTRONIC COMPONENT AND FABRICATION METHOD THEREOF | 05-02-2013 |
20130134836 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic electronic component, including: a ceramic element having a plurality of dielectric layers laminated therein; and first and second internal electrodes formed within the ceramic element, wherein the first and second internal electrodes include 80 to 99.9 wt % of copper (Cu) and 0.1 to 20 wt % of nickel (Ni), and a frequency therefor is 1000 MHz or less. | 05-30-2013 |
20130141835 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic electronic component, including: a ceramic element having a plurality of dielectric layers laminated therein; and first and second internal electrodes formed within the ceramic element, wherein the first and second internal electrodes include 80 to 99.98 wt % of nickel (Ni), 0.01 to 10 wt % of copper (Cu), and 0.01 to 10 wt % of barium titanate (BaTiO | 06-06-2013 |
20130141837 | MULTILAYER CERAMIC ELECTRONIC PART - There is provided a 1005-sized or smaller multilayer ceramic electronic part, including: a ceramic body having internal electrodes having a directivity perpendicular to a printed circuit board; and external electrodes formed on both end portions of the ceramic body and electrically connected to the internal electrodes each including an active area part and a lead part, the active area parts facing each other to contribute to forming capacitance, and the lead part having a width smaller than that of the active area part, and wherein when a width of the active area part is defined as WLa, a width of the lead part on one end portion of the ceramic body connected to the external electrodes is defined as WL1, and a bottleneck rate α of the lead part is defined as 1−WL1/WLa, the bottleneck rate α of the lead part satisfies a range of 0<α≦0.12. | 06-06-2013 |
20130308246 | MULTILAYERED CERAMIC ELECTRONIC COMPONENT AND FABRICATION METHOD THEREOF - A multilayered ceramic electronic component includes: a ceramic element having a plurality of dielectric layers laminated therein; first inner electrodes formed on the dielectric layers disposed in upper and lower portions in the ceramic element, the width of a portion of each of the first inner electrodes exposed from one end face of the ceramic element being less than that of a portion thereof disposed within the ceramic element; and second inner electrodes formed on the dielectric layers disposed in the middle portion in the ceramic element, the width of a portion of each of the second inner electrodes exposed from one end face of the ceramic element being equal to that of a portion thereof disposed within the ceramic element. | 11-21-2013 |
Patent application number | Description | Published |
20120086515 | RELAXATION OSCILLATOR - There is provided relaxation oscillator. The relaxation oscillator includes: a ramp wave generator generating ramp waves by a complementary operation between a first capacitor module charged and discharged according to a first switching signal and a second capacitor module charged and discharged according to a second switching signal; a negative feedback circuit unit generating a compensation voltage for compensating errors with reference voltage by being fedback with the ramp waves; and a switching signal generator generating the first switching signal controlling the charging and discharging of the first capacitor module and the second switching signal controlling the charging and discharging of the second capacitor module from the compensation voltage and the ramp waves. As a result, the present invention can generate ramp waves having a stable frequency while preventing a frequency from being changed due to a delay or an offset of the comparator. | 04-12-2012 |
20120319605 | ILLUMINATION DRIVING APPARATUS - A fixture-compatible, dimmable illumination driving apparatus including: a rectifying unit rectifying a phase-controlled waveform of an alternating current (AC) power; a comparing unit comparing an output waveform of the rectifying unit with a first voltage according to a preset reference clock; a reference voltage generating unit generating a reference voltage corresponding to the number of high signals higher than the first voltage among outputs of the comparing unit during one cycle of the output waveform; and a pulse width modulation (PWM) signal generating unit generating a PWM signal from the reference voltage and a feedback voltage. | 12-20-2012 |
20120319609 | LIGHT EMITTING DIODE DRIVER HAVING OFFSET VOLTAGE COMPENSATING FUNCTION - There is provided a light emitting diode (LED) driver having an offset voltage compensating function compensating for an offset voltage generated at the time of driving of an LED, the LED driver including: a driving unit detecting a current flowing in an LED unit having at least one LED, as a voltage and controlling the current flowing in the LED unit according to a comparison result between the detected voltage and a reference voltage having a preset voltage level; and an offset compensating unit integrating a voltage difference between the detected voltage and the reference voltage and adding or subtracting a compensating current according to an integration result to thereby compensate for an offset. | 12-20-2012 |
20130033191 | LIGHT EMITTING DIODE DRIVING DEVICE AND METHOD THEREOF - There are provided a light emitting diode (LED) driving device allowing for an increase in an LED driving rate by discharging a charge stored in a capacitor during a certain period of time and a method thereof. The LED driving device includes: a driving unit detecting a current, as a voltage, the current flowing across an LED unit having at least one LED, controlling the current flowing across the LED unit according to a comparison result between the detected voltage and a reference voltage having a pre-set voltage level, and having a capacitor stabilizing an operation of the LED unit when the LED unit is driven; and a discharging unit discharging a charge stored in the capacitor during a pre-set discharge time when the LED unit is initially driven. | 02-07-2013 |
20140035473 | ILLUMINATION DRIVING APPARATUS FOR LIGHT EMITTING DIODE AND METHOD THEREOF - There is provided an illumination driving apparatus for a light emitting diode, the apparatus including: a light emitting unit including M number of light emitting diodes (LEDs) connected in series and driven by an output voltage rectified in a rectifying unit; an LED switch unit including N number of LED switches connected in parallel with at least N number of the M LEDs, respectively, and connected in series; an LED switch control signal generating unit comparing the output voltage of the rectifying unit with each of the first to Nth preset reference voltages to generate N number of LED switch control signals controlling the LED switch unit; and an LED switch controlling unit transferring the N number of LED switch control signals to the LED switch unit. | 02-06-2014 |
20140176089 | PHASE SHIFT CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT INCLUDING THE SAME - There are provided a phase shift circuit and a power factor correction circuit including the same. The phase shift circuit includes a ramp generation unit charging or discharging a capacitor connected to a switch device to generate a ramp signal, a reference signal generation unit generating a predetermined reference signal from the ramp signal, and a comparison unit comparing the ramp signal with the reference signal to generate a clock signal, wherein at least one of the reference signal generation unit and the comparison unit changes a negative or positive value of offset components included in the reference signal or the ramp signal within every operating period of the switch device. | 06-26-2014 |
20140185339 | POWER FACTOR CORRECTION CIRCUIT - There is provided a power factor correction circuit including: a power conversion circuit unit controlling an inductor current according to a switching signal applied to a main switch to convert an external input voltage into an output voltage having a predetermined range; an imbalance detection circuit outputting an imbalance state signal when the external input voltage is in an unbalanced state by using the inductor current; and a soft start circuit unit performing soft starting by adjusting the switching signal when the imbalance state signal is output by the imbalance detection circuit unit. | 07-03-2014 |
20150102786 | PFC CONTROL CIRCUIT, ACTIVE PFC CIRCUIT AND PFC CONTROL METHOD - The present invention relates to a PFC control circuit, an active PFC circuit, and a PFC control method. According to an embodiment of the present invention, a PFC control circuit including: an inductor current sensing unit for sensing an inductor current of a PFC circuit; an output voltage feedback unit for outputting a feedback output signal; a sensing and feedback signal application unit for outputting a sensing voltage signal during switching duty on of the PFC circuit and adding the feedback output signal to the sensing voltage signal to output the added signal during switching duty off of the PFC circuit; and a PFC control unit for generating a comparison signal and generating a duty control signal from the comparison signal and a first reference signal to make variations due to an internal offset be removed or reduced is provided. | 04-16-2015 |
Patent application number | Description | Published |
20140055123 | MOTOR POWER SIMULATING APPARATUS FOR FUEL CELL POWER MODULE EVALUATION - Disclosed is a motor power simulating apparatus for fuel cell power module evaluation that accurately reflects real world characteristics of a fuel cell vehicle. More particularly, the power simulating apparatus disclosed herein includes a fuel cell power module, a ripple current generator, and an electronic load device, the ripple current generator connected to the fuel cell power module and the electronic load device to accurately simulate power output from a fuel cell of a fuel cell vehicle under real world conditions. | 02-27-2014 |
20140057198 | DEVICE AND METHOD FOR STACKING FUEL CELL STACK - Disclosed is a device and method for stacking a fuel cell stack, which enables automated accurate stacking of components constituting the fuel cell stack by using a phosphor coated thereon. Accordingly, when a membrane-electrode assembly (MEA), a separation plate, etc. are automatically stacked in sequence they are coated with phosphor at a predetermined position on each of the MEA, the separation plate, etc. A phosphor sensor is then positioned and configured to automatically determine whether or not the MEA and separator have been accurately stacked by detecting the presence of phosphor on the stacked MEA and separator plate respectively. | 02-27-2014 |
20150280260 | SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A system and method of controlling fuel cell system is provided that simultaneously drains condensation and purges hydrogen via single valve. In particular, condensate water is drained by opening a drain-purge valve at a point in time at which a production amount of the condensate water exceeds a capacity of a water trap. An opening time of the drain-purge valve is then determined depending on a hydrogen concentration of an anode side and a target hydrogen concentration after the draining the condensate water. Hydrogen is then purged by maintaining the drain-purge valve in a state in which it is opened for the determined opening time. | 10-01-2015 |
20150333348 | METHOD AND APPARATUS FOR ADJUSTING OXYGEN PRESSURE OF FUEL CELL SYSTEM - Disclosed are a method and an apparatus for adjusting a partial pressure of oxygen that is supplied to a fuel cell system. The oxygen partial pressure may be adjusted by primarily increasing an SR of air and by secondarily increasing a closing ratio of an opening and closing valve when a concentration of oxygen in the air is detected to be reduced. The oxygen partial pressure adjusting device of a fuel cell system includes: an air supply; a fuel supply; an oxygen sensor that is installed in an air supply line and detect a concentration of oxygen; an opening and closing valve and adjust an air supply pressure; and a controller that adjusts a partial pressure of oxygen using the opening and closing valve and a concentration of oxygen that is detected by the oxygen sensor. | 11-19-2015 |
Patent application number | Description | Published |
20130089471 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20130089472 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20150308363 | METHOD AND SYSTEM OF CONTROLLING EXHAUST AFTER-TREATMENT APPARATUS FOR VEHICLE - A system and method for controlling an exhaust after-treatment apparatus for vehicle are provided. The method includes detecting, by a controller, signals from a front lambda sensor and a rear lambda sensor of a Lean NOx Trap (LNT), when an engine is driven in a rich mode and acquiring, by the controller, a temperature of exhaust gas detected by a temperature sensor, when the engine is driven in a rich mode. Further the method includes comparing, by the controller, the signals from the front lambda sensor and the rear lambda sensor to detect a breakthrough time when a breakthrough occurs between the signals from the front lambda sensor and the rear lambda sensor. In addition, the controller is configured to determine an additional rich time period based on the breakthrough time and the temperature of exhaust gas. | 10-29-2015 |
20150337709 | EXHAUST GAS PROCESSING APPARATUS AND METHOD - An apparatus and a method for processing exhaust gas are provided. The apparatus includes a lean NOx trap (LNT), a selective catalytic reduction (SCR) catalyst, and an oxygen storage catalyst containing an oxygen storage material and a precious metal sequentially disposed along an exhaust gas flow direction. The apparatus also includes a front lambda sensor disposed upstream of the LNT, a rear lambda sensor disposed downstream of the oxygen storage catalyst, and a temperature sensor configured to measure a temperature of exhaust gas. | 11-26-2015 |
20150343381 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 12-03-2015 |
Patent application number | Description | Published |
20130129409 | DEVICE AND METHOD FOR JOINING A COMPOSITE AND METALLIC MATERIAL - Disclosed is a device and method for joining a composite and a metallic material which can stably join a composite and a metallic plate while improving the joint strength thereof. The device includes a fastening end formed at the center of the end face of the first joint end of the composite to protrude integrally, and a fastening slot formed at the center of the end face of the second joint end of the metallic material. The fastening end of the composite is fitted and fastened in the fastening slot of the metallic material, a female screw is inserted along the thickness direction through the fitted and fastened part between the fastening end and the fastening slot, and a male screw is fitted in and fastened to the female screw. | 05-23-2013 |
20130130028 | METHOD FOR PREPARING CARBON FIBER PRECURSOR - Disclosed is a method for preparing a precursor fiber for a carbon fiber. The precursor fiber of fine denier according to the present invention is used to prepare a carbon fiber having excellent tensile strength and compressive strength by a conventional single component spinneret using a superdrawing process to prepare a high strength and high elastic carbon fiber with a reduction in stabilization time. | 05-23-2013 |
20130133819 | PREPARATION METHOD FOR HOLLOW CARBON FIBER USING SUPERCRITICAL FLUID - Disclosed is a method for preparing hollow carbon fibers having an empty space in the cross section thereof. More specifically, the disclosed method includes melt-spinning an acrylonitrile-based polymer by using a supercritical fluid as a plasticizer; drawing spun fibers to prepare hollow precursor fibers; and stabilizing and carbonizing the hollow precursor fibers to prepare the hollow carbon fibers. The hollow carbon fibers obtained by the disclosed method have at least a 10 to 50% lower specific gravity than conventional hollow carbon fibers (solid), but have similar mechanical properties to the conventional fibers. Furthermore, the diameter of carbon fibers can be adjusted, thereby making it possible to widen the application of hollow carbon fibers. | 05-30-2013 |
20130136914 | PREPARATION METHOD FOR HOLLOW CARBON FIBER - Disclosed is a method for preparing hollow carbon fibers having an empty space in the cross section thereof. More specifically, the disclosed method includes preparing a spinning solution of an acrylonitrile-based polymer having a viscosity ranging from 2000 to 5000 poise at room temperature; spinning the prepared spinning solution using a spinneret designed for spinning hollow fibers; super-drawing and drawing spun fibers to prepare hollow precursor fibers; and stabilizing and carbonizing the hollow precursor fibers to prepare the hollow carbon fibers. The hollow carbon fibers obtained by the disclosed method have a lower specific gravity by 10 to 50% than conventional hollow carbon fibers (solid), but have similar mechanical properties to the conventional fibers. Furthermore, in the method, the diameter of carbon fibers can be adjusted. Thus, it is possible to widen the application of hollow carbon fibers. | 05-30-2013 |
20140329086 | CONTINUOUS CARBON FIBER/THERMOPLASTIC RESIN FIBER COMPOSITE YARN AND METHOD FOR MANUFACTURING THE SAME - Disclosed is a continuous carbon fiber/thermoplastic resin fiber composite yarn and a method for manufacturing the same, wherein the carbon fiber composite yarn provides excellent mechanical properties, is light in weight, moldable, and has excellent impregnating ability. In particular, the composite yarn is provided with these superior properties by including a continuous carbon fiber having excellent mechanical properties, a thermoplastic resin fiber, and the like, and by using a false twist processing machine or a solution bath, and the like in order to manufacture the composite yarn. | 11-06-2014 |
20150251700 | UNDER-FLOOR FRAME SYSTEM FOR VEHICLE - An under-floor frame system is disclosed. In particular, a main frame made of carbon fiber composite materials forms a closed quadrangle. A center cross member made of carbon fiber composite materials runs along a width direction of a vehicle and connects middles of the both side members. Also, a front cross member and a rear cross member made of carbon fiber composite materials runs along a width direction of a vehicle and connects a front side member portion and a rear side member portion at both sides of the main frame, respectively. A center tunnel member made of carbon fiber composite materials and is extended in a width direction of a vehicle to traverse an upper space of the center cross member and connects the front cross member and the rear cross member. | 09-10-2015 |