Patents by Inventor Min-seong Choi

Min-seong Choi 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).

  • Patent number: 10840820
    Abstract: An integrated converter is provided. The integrated converter includes a high-voltage charger having a power factor correction (PFC) device configured to compensate a low-frequency ripple and convert an alternating current (AC) voltage of a commercial power source into a direct current (DC) voltage. A first switching module is configured to convert the DC voltage output from the PFC device into an AC voltage and charge a high-voltage battery using the commercial power source and a low-voltage charger that is connected between the PFC device and the first switching module and the high-voltage charger configured to charge a low-voltage battery using the commercial power source or the high-voltage battery.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: November 17, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jin Young Yang, Gyu Yeong Choe, Min Seong Choi, Tae Jong Ha, Young Jin Kim, Jae Eun Cha, Dae Woo Lee, In Yong Yeo
  • Publication number: 20200336080
    Abstract: An integrated converter is provided. The integrated converter includes a high-voltage charger having a power factor correction (PFC) device configured to compensate a low-frequency ripple and convert an alternating current (AC) voltage of a commercial power source into a direct current (DC) voltage. A first switching module is configured to convert the DC voltage output from the PFC device into an AC voltage and charge a high-voltage battery using the commercial power source and a low-voltage charger that is connected between the PFC device and the first switching module and the high-voltage charger configured to charge a low-voltage battery using the commercial power source or the high-voltage battery.
    Type: Application
    Filed: July 22, 2019
    Publication date: October 22, 2020
    Inventors: Jin Young Yang, Gyu Yeong Choe, Min Seong Choi, Tae Jong Ha, Young Jin Kim, Jae Eun Cha, Dae Woo Lee, In Yong Yeo
  • Publication number: 20190273441
    Abstract: A low voltage DC-DC converter for a vehicle includes: a switching circuit including a plurality of capacitors and a plurality of switches and converting a high voltage output from a high voltage battery into an AC voltage; a transformer converting the AC voltage output from the switching circuit into a low voltage; a current sensor measuring a current value output from the transformer; and a controller comparing the current value measured by the current sensor with a reference value to determine whether a current mode is a continuous current mode or a discontinuous current mode, and controlling one of the plurality of switches to be turned on or off as the determination result.
    Type: Application
    Filed: September 17, 2018
    Publication date: September 5, 2019
    Inventors: Dae Woo LEE, Woo Young LEE, Min Seong CHOI, Tae Jong HA, Jae Eun CHA, Jin Myeong YANG, In Yong YEO
  • Patent number: 10404179
    Abstract: A low voltage DC-DC converter for a vehicle includes: a switching circuit including a plurality of capacitors and a plurality of switches and converting a high voltage output from a high voltage battery into an AC voltage; a transformer converting the AC voltage output from the switching circuit into a low voltage; a current sensor measuring a current value output from the transformer; and a controller comparing the current value measured by the current sensor with a reference value to determine whether a current mode is a continuous current mode or a discontinuous current mode, and controlling one of the plurality of switches to be turned on or off as the determination result.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: September 3, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dae Woo Lee, Woo Young Lee, Min Seong Choi, Tae Jong Ha, Jae Eun Cha, Jin Myeong Yang, In Yong Yeo
  • Publication number: 20190027967
    Abstract: A wireless power receiving apparatus includes a receiving resonator configured to wirelessly receive energy; a resonant converter configured to transfer, to an output end of the wireless power receiving apparatus, energy of an energy storage device connected among a plurality of energy storage devices; and a controller configured to accumulate, alternatingly in the energy storage devices, the energy received, and select the energy storage device to be connected to the resonant converter from the energy storage devices.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 24, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Seungchul JUNG, Gyu Hyeong CHO, Sang Joon KIM, JongPal KIM, Se Un SHIN, Min Seong CHOI, Seok Tae KOH, Yu Jin YANG
  • Publication number: 20120262722
    Abstract: An apparatus and method for optical coherence tomography are provided. The apparatus includes a light source configured to generate a plurality of beams, a light coupler configured to split the plurality of beams into measurement beams and reference beams, transmit the measurement beams to a target object via a probe, and receive response beams from the probe, a detector configured to detect interference signals based on interference between the response beams and the reference beams, and an image processor configured to generate a first image of the target object based on any one of the interference signals and generate a second image of the target object having image characteristics different from those of the first image based on an other one of the interference signals.
    Type: Application
    Filed: November 15, 2011
    Publication date: October 18, 2012
    Inventors: Jae-guyn Lim, Min-seong Choi, Won-hee Choi, Seong-deok Lee