Patents by Inventor Yong-jae Lee

Yong-jae Lee 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).

  • Publication number: 20200028460
    Abstract: An apparatus for controlling an inverter for driving a motor including a processor which includes: a current processor configured to generate a voltage command for allowing a current detection value, generated by measuring a current provided from an inverter to a motor, to follow a current command for driving the motor; a voltage modulator configured to generate a pulse width modulation signal for controlling on and off states of a switching element within the inverter with a predetermined switching frequency based on the voltage command; and a frequency determining processor configured to randomly change the switching frequency based on driving information of the motor.
    Type: Application
    Filed: November 21, 2018
    Publication date: January 23, 2020
    Inventors: Yong Jae LEE, Tae Won HA, Su Hyun BAE, Ho Joon SHIN, Sung Kyu KIM, Joo Young PARK
  • Publication number: 20200028462
    Abstract: An apparatus for controlling an inverter for driving a motor includes a processor which includes: a current processor for generating a voltage command for causing a current detection value obtained by measuring a current supplied from the inverter to the motor to follow a current command for driving the motor; a voltage modulator for generating a pulse width modulation signal for controlling on and off states of switching elements in the inverter with a predetermined switching frequency based on the voltage command; and a frequency determining processor for setting a frequency change range within which the switching frequency will be randomly changed and randomly determining the switching frequency within the frequency change range when a random pulse width modulation method is applied to control of the inverter.
    Type: Application
    Filed: December 4, 2018
    Publication date: January 23, 2020
    Inventors: Sung Kyu Kim, Yong Jae Lee, Su Hyun Bae, Ho Joon Shin, Tae Won Ha, Joo Young Park
  • Publication number: 20200021227
    Abstract: An apparatus for controlling an inverter for a motor driving includes: a current controller configured to generate a d/q-axis voltage reference for allowing a d/q-axis current detection value, which is obtained by measuring a current supplied from the inverter to the motor, to converge on the d/q-axis current reference for driving the motor, and a voltage modulator configured to control switching of the inverter by selectively applying one among a plurality of predetermined pulse width modulations (PWM) based on a point at which the d/q-axis voltage reference is located in a hexagonal space voltage vector diagram.
    Type: Application
    Filed: November 20, 2018
    Publication date: January 16, 2020
    Inventors: Yong Jae LEE, Joo Young PARK, Ho Joon SHIN, Sung Kyu KIM, Su Hyun BAE
  • Patent number: 10483900
    Abstract: A system for controlling an inverter may include a motor; then inverter including a plurality of switching elements turned on/off by a pulse width modulation signal, converting DC power into AC power according to on/off of the plurality of switching elements and providing the AC power to the motor; a current sensor for detecting and outputting a current provided to the motor; a rotation angle sensor for detecting and outputting a rotor angle of the motor; and a controller for performing duty determination control for determining a duty of the pulse width modulation signal on the basis of values detected by the current sensor and the rotation angle sensor and a torque command of the motor.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: November 19, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Joo Young Park, Mu Shin Kwak, Jae Ho Hwang, Su Hyun Bae, Yong Jae Lee, Sung Kyu Kim
  • Patent number: 10473894
    Abstract: An optical system may include: a first lens having positive refractive power facing an object, the first lens having a first convex face facing the object; a second lens having positive refractive power, the second lens having a second convex face facing the object; a third lens having negative refractive power, the third lens having a third concave face facing an image sensor; a fourth lens adjacent to the third lens; a fifth lens adjacent to the fourth lens, the fifth lens having a fourth face facing the object, the fourth face being convex where the fifth lens intersects the optical axis; and a sixth lens adjacent to the fifth lens. The characteristics of the optical system satisfy equation, 0.4<f/f2<1/6 (Here, “f” represents a focal distance of the optical system, and “f2” represents the focal distance of the second lens).
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: November 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Heu, Jung-Pa Seo, Hyun-Jea Kim, Yong-Jae Lee, Hwan-Seon Lee
  • Patent number: 10468256
    Abstract: A method of forming a material layer includes providing a substrate into a reaction chamber, providing a source material onto a substrate, the source material being a precursor of a metal or semimetal having a ligand, providing an ether-based modifier on the substrate, purging an inside of the reaction chamber, and reacting a reaction material with the source material to form the material layer.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: November 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-min Moon, Youn-soo Kim, Han-jin Lim, Yong-jae Lee, Se-hoon Oh, Hyun-jun Kim, Jin-sun Lee
  • Publication number: 20190315234
    Abstract: A charging system for a vehicle includes: a power transmitter transmitting power for charging a battery of a vehicle; a charger including a three-phase motor and inverter, and receiving the power from the power transmitter; an input voltage calculating processor selecting any one of a plurality of predetermined duty ratios and calculating a value of an input voltage supplied to the charger based on the selected duty ratio and a voltage value of the battery of the vehicle; an input current calculating processor calculating a value of an input current based on the calculated value of the input voltage and a value of the power transmitted by the power transmitter; a power transmission controller instructing the calculated input current to be input to the charger; and a charging controller instructing the battery of the vehicle to be charged.
    Type: Application
    Filed: October 23, 2018
    Publication date: October 17, 2019
    Inventors: Ho Joon SHIN, Joo Young PARK, Yong Jae LEE, Sung Kyu KIM, Su Hyun BAE
  • Patent number: 10422982
    Abstract: A super-wide angle lens and a photographing apparatus including the super-wide angle lens are provided. The super-wide angle lens includes a first lens having a negative refractive power and a second lens having a positive refractive power, wherein the first lens and the second lens are disposed in sequential order from an object side to an image side, and wherein the super-wide angle lens has a half view angle of 80 degrees or greater.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 24, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-jae Lee
  • Patent number: 10393185
    Abstract: A bearing for a drive motor is provided. The bearing includes an inner race that is coupled to a rotation shaft, an outer race that is coupled to a motor housing, and rolling members that are rotatably disposed between a raceway surface of the inner race and a raceway surface of the outer race. Additionally, a retainer is disposed between the inner race and the outer race and supports the rolling members at a predetermined interval along a circumferential direction. A conductive guide member is formed in each of the inner race and the outer race and forms a current path between the inner race and the outer race through the retainer.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 27, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Nyeonhan Hong, Hee Ra Lee, Jung Shik Kim, Kyungsoo Park, Jae Bum Park, Yong Jae Lee, Jai Hak Kim, Suhyun Bae
  • Publication number: 20190260326
    Abstract: A system for controlling an inverter may include a motor; then inverter including a plurality of switching elements turned on/off by a pulse width modulation signal, converting DC power into AC power according to on/off of the plurality of switching elements and providing the AC power to the motor; a current sensor for detecting and outputting a current provided to the motor; a rotation angle sensor for detecting and outputting a rotor angle of the motor; and a controller for performing duty determination control for determining a duty of the pulse width modulation signal on the basis of values detected by the current sensor and the rotation angle sensor and a torque command of the motor.
    Type: Application
    Filed: September 17, 2018
    Publication date: August 22, 2019
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Joo Young PARK, Mu Shin KWAK, Jae Ho HWANG, Su Hyun BAE, Yong Jae LEE, Sung Kyu KIM
  • Publication number: 20190250382
    Abstract: A fisheye lens assembly and an electronic apparatus are disclosed. The fisheye lens has an angle of view of 150° or more, includes a plurality of lenses including an aspherical lens having an inflection point on one surface or both surfaces thereof, and satisfies the expression 35 ?m?SAG_MAX, where SAG_MAX denotes a maximum value of absolute values of SAG values of inflection points of the aspherical lens.
    Type: Application
    Filed: June 27, 2017
    Publication date: August 15, 2019
    Inventor: Yong-jae LEE
  • Patent number: 10324924
    Abstract: According to an exemplary embodiment of the present invention, disclosed is a method for synchronizing query results between databases executed in a first database server. The method may include: determining synchronization of a materialized view present in a second database server which is remotely located from the first database server in which the materialized view refers to a master table present in the first database server and the first database server and the second database server are heterogeneous; generating a synchronization command to be transmitted to the second database server in response to determination of synchronization; and transmitting the generated synchronization command to the second database server to allow the second database server to synchronize the materialized view present in the second database server and the master table present in the first database server.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 18, 2019
    Assignee: TmaxData Co., Ltd.
    Inventors: Joo Hyun Lee, Sang Young Park, Yong Jae Lee, Young Jae Choi, Bong Chae Kang
  • Publication number: 20190178294
    Abstract: A bearing for a drive motor is provided. The bearing includes an inner race that is coupled to a rotation shaft, an outer race that is coupled to a motor housing, and rolling members that are rotatably disposed between a raceway surface of the inner race and a raceway surface of the outer race. Additionally, a retainer is disposed between the inner race and the outer race and supports the rolling members at a predetermined interval along a circumferential direction. A conductive guide member is formed in each of the inner race and the outer race and forms a current path between the inner race and the outer race through the retainer.
    Type: Application
    Filed: July 20, 2018
    Publication date: June 13, 2019
    Inventors: Nyeonhan Hong, Hee Ra Lee, Jung Shik Kim, Kyungsoo Park, Jae Bum Park, Yong Jae Lee, Jai Hak Kim, Suhyun Bae
  • Publication number: 20190181729
    Abstract: A ground structure of a drive motor is provided. The ground structure of the drive motor forms a current path of a motor housing and a rotation shaft. The structure includes a current carrying housing that is fixed to the motor housing and accommodates a least one end portion of the rotation shaft and a current carrying medium that has conductivity and is included in an inner space of the current carrying housing.
    Type: Application
    Filed: August 14, 2018
    Publication date: June 13, 2019
    Inventors: Jung Shik Kim, Hyoungjun Cho, Sanghoon Moon, Kyungsoo Park, Suhyun Bae, Yong Jae Lee, Nyeonhan Hong, Jai Hak Kim
  • Publication number: 20190181714
    Abstract: A drive motor for a vehicle includes: a stator and a rotor, in which the stator includes: stator teeth which are disposed between multiple slots, respectively, the multiple slots being formed at predetermined intervals in a circumferential direction corresponding to an outer circumferential surface of the rotor, and have a blocking portion which protrudes toward one of the slots disposed at both sides, the blocking portion formed at one side of an inner circumferential surface of each of the stator teeth facing the rotor, and a groove which is formed radially outward at an opposite side of the inner circumferential surface of each of the stator teeth; and opening sections each of which is in communication with the slot and formed between the blocking portion and the opposite side of the inner circumferential surface of the stator tooth adjacent to the blocking portion, and the slot is opened radially through the opening section.
    Type: Application
    Filed: November 19, 2018
    Publication date: June 13, 2019
    Inventors: Kyungsoo Park, Sanghoon Moon, Jung Shik Kim, Yong Jae Lee, Nyeonhan Hong, Hyoungjun Cho, Suhyun Bae
  • Publication number: 20190181713
    Abstract: A drive motor for a vehicle includes: a stator having a wound stator coil; a rotor that is spaced from the stator by a gap and is rotatably disposed in the stator; and a shielding film that is disposed between the stator coil and the rotor and is configured to shield a parasitic capacitance between the stator and the rotor.
    Type: Application
    Filed: October 17, 2018
    Publication date: June 13, 2019
    Inventors: Kyungsoo Park, Hyoungjun Cho, Sanghoon Moon, Suhyun Bae, Yong Jae Lee, Nyeonhan Hong, Jai Hak Kim, Jung Shik Kim
  • Patent number: 10236707
    Abstract: Disclosed herein is a charging system using a wound rotor synchronous motor (WRSM), capable of reducing volume, weight, and cost of a vehicle increased due to an on-board charging circuit and increasing a battery charge capacity. The charging system using a wound rotor synchronous motor (WRSM) includes an inverter converting power of a battery into alternating current (AC) powers having a plurality of different phases, a WRSM having a plurality of stator coils each receiving AC power of a different phase and a field coil forming mutual inductance with the plurality of stator coils and installed in a rotor to form a magnetic flux using power of the battery, and a controller controlling the battery side and the field coil side are insulated from each other in a charge mode in which grid power is applied to the field coil side of the WRSM.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 19, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA Motors Corporation, Seoul National University R&DB Foundation
    Inventors: Ho Joon Shin, Mu Shin Kwak, Sung Kyu Kim, Young Kook Lee, Jung Ik Ha, Yong Jae Lee, Yong Su Han
  • Patent number: 10235918
    Abstract: Disclosed is a timing controller including: a receiving unit configured to receive image data; a buffer memory configured to temporarily store and output the received image data; a timing controller circuit configured to generate a transmission clock signal; and a transmitter configured to receive the transmission clock signal and a transmission data signal, wherein the transmission data signal includes the image data output by the buffer memory, wherein the transmitter is configured to transmit a transmission signal, wherein the transmission clock signal is embedded in the transmission data signal, and wherein the transmission clock signal has a magnitude different from the transmission data signal.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: March 19, 2019
    Assignee: ANAPASS INC.
    Inventor: Yong-Jae Lee
  • Publication number: 20190004286
    Abstract: Provided are an optical lens assembly and an electronic apparatus including the same. The optical lens assembly includes a first lens group and a second lens group that are arranged from an object side to an image side, wherein the first lens group has positive refractive power and is fixed during focusing, and the second lens group moves along an optical axis for focusing.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 3, 2019
    Inventors: Min HEU, Yong-jae LEE
  • Publication number: 20180353967
    Abstract: According to an embodiment of the present disclosure, there is provided a hydro crusher for water treatment, for removing living organisms from water to be treated, the hydro crusher including: a body portion which has a cylindrical shape having an inner space, and includes an inflow portion to allow the water to be treated to be drawn into the inner space therethrough, and a discharge portion to discharge the water to be treated, drawn in through the inflow portion; and solid particles which are movable by the water to be treated, wherein the movable solid particles are filled in at least a portion of the inner space. Accordingly, there is an effect that physical sterilization is possible by killing or inactivating living organism included in water to be treated by applying a shock to the living organism.
    Type: Application
    Filed: July 25, 2018
    Publication date: December 13, 2018
    Inventors: Hyung Oh Kim, Yong Jae Lee, Keun Hyung Choi