Patents by Inventor Jin Wook Kim
Jin Wook Kim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130324279Abstract: This disclosure relates a system and method for posture correcting, which will provide intuitive correction information so that a user can correct a posture when exercising golf swing. The posture correcting system photographs successive sports swing postures of a user to form swing image data, forms a swing image for a specific posture of the user by using the swing image data, stores a reference swing image corresponding to the swing image, compares the swing image with the reference swing image to produce a correction image showing whether the swing image is in agreement with the reference swing image, and displays the correction image.Type: ApplicationFiled: October 20, 2011Publication date: December 5, 2013Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventor: Jin Wook Kim
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Patent number: 8598741Abstract: There are disclosed a photovoltaic and fuel cell (PV-FC) hybrid generation system using a single converter and a single inverter, and a method of controlling the same. The PV-FC hybrid generation system includes a DC/DC converter unit converting an FC output voltage from a fuel cell, converting chemical energy into electrical energy, into a preset voltage, a DC link unit commonly connecting an output terminal of a photovoltaic cell, converting the sunlight into electrical energy, and an output terminal of the DC/DC converter unit, and linking the converted FC output voltage from the DC/DC converter unit with a PV output voltage from the photovoltaic cell to thereby generate a DC voltage, and a DC/AC inverter unit converting the DC voltage from the DC link unit into a preset AC voltage. Furthermore, a method of controlling the PV-FC hybrid generation system is proposed.Type: GrantFiled: December 21, 2009Date of Patent: December 3, 2013Assignees: Samsung Electro-Mechanics Co, Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Jin Wook Kim, Byoung Kuk Lee, Jong Soo Kim, Gyu Yeong Choe, Jong Sun Kim, Il Woon Lee, Jae Sun Won, Jong Hae Kim, Dong Seong Oh
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Publication number: 20130271997Abstract: A lighting device may be provided that includes: a heat sink which includes a base and a projection extending from the base and having one side; a light source which includes a substrate disposed on the one side of the projection and a light emitting device disposed on the substrate; an optical plate disposed on the light emitting device; a driving part which is disposed on the base and is electrically connected to the light source; and a housing which receives the heat sink, the light source, the optical plate and the driving part, wherein the one side of the projection is disposed between a first point and a second point, wherein the first point indicates a half of the overall height of the housing, and wherein the second point indicates a minimum interval of 5 mm between the light emitting device and the optical plate.Type: ApplicationFiled: February 6, 2013Publication date: October 17, 2013Inventors: Jin Wook KIM, Jung Oh Chun, Sang Jun Hong, Ji Hwan Jeon
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Patent number: 8544378Abstract: A hydraulic system for construction equipment having a float function is provided. The hydraulic system can perform ground leveling as making a boom descend due to its own weight without using hydraulic fluid that is discharged from a hydraulic pump. The hydraulic system includes a holding logic poppet mounted in the float valve to prevent an abrupt descending of the boom due to leakage of the hydraulic fluid through a flow path between the main control valve and the float valve during the operation of the boom cylinders.Type: GrantFiled: June 7, 2010Date of Patent: October 1, 2013Assignee: Volvo Construction Equipment Holding Sweden ABInventor: Jin Wook Kim
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Patent number: 8514599Abstract: There is provided an apparatus and method for controlling a switch of a flyback converter for a solar generating system. The apparatus for controlling a switch of a flyback converter for a solar generating system includes: an MPPT controller generating a current command value for a maximum power point tracker of a solar cell module, based on input voltage, input current, and output voltage of the flyback converter; a current controller generating a current control signal for tracking the current command value; an output current command value generator generating the phase and magnitude command value of the output current, based on the phase of the output voltage and the current control signal; and a switch controller controlling the main switch of the flyback converter, based on the phase and magnitude command value of the output current, thereby simplifying a circuit while solving disadvantages of a discontinuous conduction mode and a boundary conduction mode.Type: GrantFiled: March 24, 2011Date of Patent: August 20, 2013Assignees: Samsung Electro-Mechanics Co., Ltd, Sungkyunkwan UniversityInventors: Tae Won Lee, Doo Young Song, Ku Yong Kim, Jin Wook Kim, Chung Yuen Won, Young Ho Kim, Byoung Kuk Lee, Yong Hyok Ji, Don Sik Kim, Tae Hoon Kim
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Patent number: 8493758Abstract: There are provided a method and an apparatus for generating a current command value for tracking the maximum power point of a solar energy generating system. The apparatus includes: a voltage detector detecting a voltage input into the flyback power converter; a first calculator calculating an output power from the detected input voltage; a second calculator calculating a power variation based on the calculated output power and a voltage variation of the input voltage; and a current command value generator generating a current command value for tracking the maximum power point of the solar cell module from the calculated voltage variation and the calculated power variation. Accordingly, a current command value after calculating an output power may be generated with only a voltage detector, without a current detector, thereby reducing the costs of a solar energy generating system by decreasing the costs for a high-priced current detector, and simplifying circuit.Type: GrantFiled: November 8, 2011Date of Patent: July 23, 2013Assignees: Samsung Electro-Mechanics Co., Ltd., Research & Business Foundation Sungkyunkwan UniversityInventors: Tae Won Lee, Yong Hyok Ji, Chung Yuen Won, Don Sik Kim, Doo Young Song, Min Ho Heo, Jin Wook Kim, Tae Hoon Kim, Young Ho Kim
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Patent number: 8493020Abstract: There are provided an apparatus and method for charging and discharging a photovoltaic PCS integrated battery applied to a system that includes a first DC/DC converter 110 connected to a solar cell 10, a DC/AC inverter 120, a DC link unit 130 connected in common to output terminals of the first DC/DC converter 110 and the DC/AC inverter 120, and a second DC/DC converter 140 having a bidirectional DC/DC conversion function connected between the DC rink unit 130 and the battery 30. The present invention calculates the amount of photovoltaic power produced by the solar cell 10 based on voltage and current detected in the voltage/current detector 200, determines one of predetermined control modes according to the amount of photovoltaic power and the connection or not of the battery, and controls the first DC/DC converter 110, the second DC/DC converter, and the DC/AC inverter according to the determined control mode.Type: GrantFiled: October 7, 2010Date of Patent: July 23, 2013Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Tae Won Lee, Dong Seong Oh, Jin Wook Kim, Hee Sung Moon, Jeong Min Ko, Jong Soo Kim, Chung Yuen Won, Byoung Kuk Lee, Gyu Yeong Choe
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Publication number: 20130163290Abstract: There is provided an LLC type power supply apparatus for controlling switching of a secondary side rectifier based on primary side current, particularly, controlling switching of the secondary-side rectifier based on primary side resonance current and magnetizing current. The power supply apparatus includes: a switching unit switching input power; a transformer unit transforming the switched power from the switching unit; a rectifying unit including a rectifier turned on and turned off in response to a control signal to rectify the transformed power; a controlling unit controlling the switching of the switching unit, based on an output power of the rectifying unit; and a switching controlling unit controlling turning-on and turning-off of the rectifier of the rectifying unit, based on current flowing in the transformer unit.Type: ApplicationFiled: April 6, 2012Publication date: June 27, 2013Inventors: Gun Woo Moon, Bong Chul Kim, Jin Wook Kim, Chong Eun Kim, Dong Jin Park, Don Sik Kim, Hong Sun Park
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Patent number: 8422258Abstract: Disclosed are a maximum power point tracker, a power conversion controller, a power conversion device having an insulating structure, and a method for tracking maximum power point. The power conversion device includes: a DC/AC converter including a primary DC chopper unit having a primary switch, a transformer, and an AC/AC conversion unit including a secondary switch; a current detector detecting current from an input stage of the DC/AC converter and providing a detected current value; a voltage detector detecting a system voltage from an output stage of the DC/AC converter; and a power conversion controller generating a primary PWM signal to be provided to the primary DC chopper unit and secondary first and second PWM signals, having the mutually opposing phases, to be provided to the AC/AC conversion unit by using the detected current value and the system voltage.Type: GrantFiled: September 14, 2010Date of Patent: April 16, 2013Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Jin Wook Kim, Tae Won Lee, Dong Seong Oh, Yong Hyok Ji, Byoung Kuk Lee, Chung Yuen Won, Jae Hyung Kim, Young Ho Kim
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Patent number: 8406022Abstract: There are provided an apparatus and a method for controlling the power quality of a power generation system. According to the present invention, there is provided an apparatus for controlling the power quality of a power generation system including a DC/AC inverter converting DC voltage into AC voltage and supplying inverter current to a grid, including: a grid voltage phase follower generating a grid signal; a fundamental extractor extracting a magnitude of a fundamental wave of a load current introduced into a non-linear load connected between the DC/AC inverter and the grid; a first calculator subtracting a preset current compensation value from the magnitude of the fundamental wave from the fundamental extractor; and a second calculator generating an inverter current instruction value for the DC/AC inverter by using the output value of the first calculator and the grid signal and the load current from the grid voltage phase follower.Type: GrantFiled: October 18, 2010Date of Patent: March 26, 2013Assignees: Samsung Electro-Mechanics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Tae Hoon Kim, Jae Hyung Kim, Jun Gu Kim, Yong Hyok Ji, Chung Yuen Won, Doo Young Song, Byoung Kuk Lee, Dong Seong Oh, Tae Won Lee, Jin Wook Kim
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Patent number: 8382354Abstract: The lighting module includes: a case including an opening from which light is emitted, a base portion corresponding to the opening, and a seat on at least one side of the base portion; a light source unit disposed on the seat; a light guide plate placed within the case and optically connected with the light source unit; and a diffusing plate placed within the case and placed below the light guide plate, wherein the lighting source unit includes a substrate, a plurality of light emitting diodes (LEDs) disposed on the substrate, and a sub-reflector which is disposed on the substrate and covers the plurality of the LEDs, and wherein at least 90% of the light emitted from the LEDs is directly irradiated onto the light guide plate.Type: GrantFiled: May 15, 2012Date of Patent: February 26, 2013Assignee: LG Innotek Co., Ltd.Inventors: Han Gyoul Kim, Hwayoung Kim, Il Yeong Kang, Hyunha Shin, Sang Hoon Lee, Jin Wook Kim, Hyong Jin Kim, JunYoung Byun, Jaemyeong Noh
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Publication number: 20130032225Abstract: A pressure control valve is provided. The pressure control valve includes a sleeve having an inlet port receiving hydraulic fluid and a low-pressure path communicating with a hydraulic tank, a main poppet opening and closing the low-pressure path with respect to the inlet port, a main poppet spring elastically biasing the main poppet in an initial state by pressing the main poppet, a pilot poppet having an orifice flow path to control pressure in the pressure chamber while maintaining a sliding state against a valve seat when pressure that exceeds a predetermined pressure is generated in the pressure chamber to open an internal flow path of the valve seat, and a pilot poppet spring elastically biasing the pilot poppet in an initial state by pressing the pilot poppet to maintain the internal flow path of the valve seat closed.Type: ApplicationFiled: May 17, 2010Publication date: February 7, 2013Applicant: VOLVO CONSTRUCTION EQUIPMENT ABInventor: Jin-Wook Kim
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Publication number: 20130032233Abstract: hydraulic control valve for a construction machine is provided. The hydraulic control valve includes a boom spool slidingly coupled into a valve block to be shifted to control the hydraulic fluid supplied from a first hydraulic pump and a second hydraulic pump to the actuator and provided with an internal path, a supply path of the first hydraulic pump and a supply path of the second hydraulic pump which are formed to be vertically symmetrical about the boom spool, check valves elastically supported to open and close the supply path of the first hydraulic pump and the supply path of the second hydraulic pump, respectively, bridge paths formed to be horizontally and vertically symmetrical with respect to a path formed on a sliding surface of the valve block to supply the hydraulic fluid, cylinder paths supplying the hydraulic fluid from the first hydraulic pump to the actuator.Type: ApplicationFiled: May 17, 2010Publication date: February 7, 2013Applicant: VOLVO CONSTRUCTION EQUIPMENT ABInventor: Jin-Wook Kim
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Publication number: 20130029211Abstract: A rechargeable battery that prevents an internal short circuit of a cell by inducing bending of a cap plate and a case at a predetermined location and in a predetermined direction under a longitudinal compression condition. The rechargeable battery includes a case having a front sidewall opposite a back sidewall, a bottom wall opposite an opening and joint portions connecting the bottom wall to each of the front and back sidewalls, an electrode assembly arranged within the case, a cap plate arranged within the opening of the case to seal within the electrode assembly, the cap plate including at least one bend inducing groove, a curvature of an inner curved surface of portions of the joint portions arranged within the center portion being greater than a curvature of an inner curved surface of portions of the joint portions arranged within the side portions.Type: ApplicationFiled: November 23, 2011Publication date: January 31, 2013Applicant: SAMSUNG SDI CO., LTD.Inventors: Jae-Il Seong, Hideaki Yoshio, Kyung-Keun Lee, Jin-Wook Kim, Ji-Wan Jeong
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Publication number: 20130029208Abstract: A rechargeable battery case that prevents a short circuit of a cell by inducing bending of a case under a lateral/longitudinal compression condition in a specific manner. The rechargeable battery case includes an opening in the case through which an electrode assembly is inserted. A bottom portion is provided at an end of the case opposite to that of the opening. A front portion is connected to the bottom portion. A back portion is connected to the bottom portion and the front portion. A joint portion is arranged between the front, back and bottom portion. Further, a first area and a second area are disposed longitudinally in the front and back portions. The second area is on either side of the first area. The joint portion in the second area is thicker than the joint portion in the first area.Type: ApplicationFiled: December 29, 2011Publication date: January 31, 2013Applicant: SAMSUNG SDI CO., LTD.Inventors: JAE-IL SEONG, HIDEAKI YOSHIO, KYUNG-KEUN LEE, JIN-WOOK KIM
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Publication number: 20130010467Abstract: The flat lighting assembly apparatus comprises: a ceiling member; a power supply controller disposed within the ceiling member; a connector coupled to the ceiling member and electrically connected to the power supply; and a flat lighting module coupled to the connector and comprising; a frame including a base, an extension portion extending from the base, a socket disposed on a rear surface of the base, and a guide disposed on the rear surface of the base and disposed around the socket; a light source disposed on a front surface of the base; and a diffusion plate disposed on the light source and coupled to the base, wherein the connector has a insertion groove electrically connected to the socket and comprises a coupling unit coupled to the guide.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: LG INNOTEK CO., LTD.Inventors: Hwayoung KIM, Jin Wook KIM, Hyunha SHIN, Sang Hoon LEE
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Publication number: 20120313536Abstract: A LED driving circuit having a sensing unit is disclosed. The LED driving circuit includes an input unit configured to receive a dimming signal to drive an LED array, a DC-DC converter including a power transistor configured to perform a switching operation, the DC-DC converter being configured to provide an output voltage to the LED array by the switching operation, a PWM signal generating unit configured to provide a PWM signal to adjust power of the LED array to the power transistor, a LED driving unit configured to drive the LED array using the dimming signal, and a sensing unit configured to sense degradation of the power transistor.Type: ApplicationFiled: June 4, 2012Publication date: December 13, 2012Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Hyoung-kyu Kim, Tae-kyoung Kang, Gyu-ho Lim, Jin-wook Kim
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Publication number: 20120313685Abstract: A level shifter and a method of operating a level shifter are provided. The level shifter includes a first-level shifter unit configured to convert an external input signal into a signal in a preset first-voltage range using a plurality of transistors and output the converted signal and a second-level shifter unit configured to convert the signal output from the first-level shifter unit into a signal in a preset second-voltage range using a plurality of transistors and output the converted signal.Type: ApplicationFiled: June 4, 2012Publication date: December 13, 2012Inventors: Hyoung-kyu KIM, Jin-wook Kim, Bae-kun Choi
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Patent number: D685130Type: GrantFiled: September 8, 2011Date of Patent: June 25, 2013Assignee: LG Innoteck Co., Ltd.Inventors: Hwa Young Kim, Jin Wook Kim, Il Yeong Kang, Han Gyoul Kim
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Patent number: D695439Type: GrantFiled: September 8, 2011Date of Patent: December 10, 2013Assignee: LG Innotek Co., Ltd.Inventors: Hwa Young Kim, Jin Wook Kim, Il Yeong Kang, Han Gyoul Kim