Patents by Inventor Yun-Ho Choi

Yun-Ho 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).

  • Publication number: 20250062755
    Abstract: Disclosed are an apparatus and a method for compensating for a phase delay of a resolver signal. The apparatus includes an input/output interface, and a processor connected to the input/output interface, wherein the processor receives a command signal and the resolver signal through the input/output interface, calculates a delay time of the resolver signal with respect to the command signal based on the command signal and the resolver signal, calculates a compensation time based on the delay time, and compensates the command signal based on the compensation time.
    Type: Application
    Filed: August 9, 2024
    Publication date: February 20, 2025
    Applicants: HYUNDAI MOBIS CO., LTD., HYUNDAI MOTOR COMPANY, Kia Corporation
    Inventors: Won Hee JO, Hyung Min PARK, Joo Won PARK, Yeon Ho KIM, Beom Cheol CHO, Yun Ho CHOI, Tae Hwan KANG, Do Hyeon HAM
  • Patent number: 12189367
    Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: January 7, 2025
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Yun Ho Choi, Hyung Min Park, Joo Won Park, Yeon Ho Kim, Won Hee Jo, Tae Hwan Kang, Beom Cheol Cho
  • Publication number: 20240378730
    Abstract: A motion feedback method is disclosed. The method includes: acquiring a frame in which a scene of the motion performed by a user is captured through a camera; acquiring motion data of the user by analyzing the captured frame; acquiring pressure data measured in response to the user's motion through a pressure sensor; generating comparison target data by normalizing the motion data and the pressure data so as to correspond to pre-prepared reference data according to the expert's motion; and comparing the reference data and the comparison target data to generate feedback data for the user's motion, and outputting the generated feedback data.
    Type: Application
    Filed: April 15, 2024
    Publication date: November 14, 2024
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yun Ho CHOI, Kyung Joong KIM, Eun Hee KIM, Jin Ha NOH
  • Publication number: 20240128915
    Abstract: Disclosed is a motor driving apparatus including: a motor; an inverter including a switching element for driving the motor; a controller for controlling the switching element; a resolver including an excitation winding and a detection winding; and a resolver chip applying an excitation signal to the excitation winding by inputting a periodic signal from the controller, and receiving a feedback signal from the detection winding, wherein the resolver chip determines the number of rotations of the motor based on a change in a pulse width of a detection signal resulting from a comparison between a voltage of the feedback signal and a preset voltage, and output a signal to the inverter for setting an inertial driving control mode according to the number of rotations of the motor in a failure state of the controller.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 18, 2024
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Tae Hwan KANG, Hyung Min PARK, Joo Won PARK, Beom Cheol CHO, Yun Ho CHOI, Yeon Ho KIM, Won Hee JO
  • Publication number: 20240069524
    Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.
    Type: Application
    Filed: December 27, 2022
    Publication date: February 29, 2024
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Yun Ho CHOI, Hyung Min PARK, Joo Won PARK, Yeon Ho KIM, Won Hee JO, Tae Hwan KANG, Beom Cheol CHO
  • Publication number: 20230330120
    Abstract: The present invention relates to a composition for preventing (alleviating) hair loss or promoting hair regrowth, comprising an ingredient for promoting hair regrowth or retarding hair loss. In this regard, in-vitro experiments were conducted in the present invention to verify the effects of promoting the wnt/beta-catenin signaling pathway activity, proliferating dermal papilla cells, and increasing an expression level of beta-catenin protein. Furthermore, the composition was found to have a high effect of preventing hair loss and/or promoting hair regrowth because a better result was obtained as assayed by researchers' evaluation through clinical photography and by phototrichogram after application thereof. In light of such comprehensive outcomes, the composition of the present invention has an excellent effect of preventing hair loss and/or promoting hair regrowth.
    Type: Application
    Filed: August 25, 2020
    Publication date: October 19, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Jae-Young SHIN, Jae-Yoon KIM, Yun-Ho CHOI, Sanghwa LEE
  • Publication number: 20230205098
    Abstract: Disclosed is a photo mask stage unit performing alignment on a photo mask, the photo mask stage unit including: an aligning member for aligning the photo mask so that the photo mask is positioned in a proper position; and guide members for supporting edges of the photo mask and guiding the photo mask to the proper position, in which the aligning member pushes the photo mask in a diagonal direction.
    Type: Application
    Filed: December 27, 2022
    Publication date: June 29, 2023
    Applicant: SEMES CO., LTD.
    Inventors: Yun Ho Choi, Seung Won Kim
  • Publication number: 20230201097
    Abstract: Provided is a composition for inhibiting hair graying, having an excellent effect of preventing the occurrence of gray hair, and a use thereof. A composition for inhibiting hair graying, of the presently claimed subject matter, activates the Wnt and ?-catenin signaling pathway to promote melanin synthesis in hair, thereby having remarkably excellent hair graying (canities) inhibition, prevention, improvement, alleviation, delaying, or treatment effects.
    Type: Application
    Filed: May 28, 2020
    Publication date: June 29, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Yun-Ho CHOI, Sanghwa LEE, Jae Young SHIN, Jaeyoon KIM
  • Publication number: 20230060969
    Abstract: Provided is a composition for preventing hair loss and promoting hair growth, containing an ingredient for inducing anagen hair growth or hair growth promotion. The composition for preventing hair loss and promoting hair growth, of the presently claimed subject matter, shortens the period of telogen-to-anagen transition in the hair growth cycle, so as to promote hair growth and delay the transition to the catagen stage, thereby having the excellent effects of preventing hair loss and promoting hair growth.
    Type: Application
    Filed: January 23, 2020
    Publication date: March 2, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Jae-Yoon KIM, Jae-Young SHIN, Yun-Ho CHOI, Sang-Hwa LEE
  • Patent number: 11587634
    Abstract: An integrated circuit test apparatus includes: a first test unit configured to output a current for a built-in self test (BIST) progress state for each internal circuit of an integrated circuit in a BIST test mode and to determine whether each internal circuit operates normally in a wake-up mode of the integrated circuit; and a first determination module configured to determine whether each internal circuit is in a stuck state based on a change detected by the first test unit.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: February 21, 2023
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventors: Yeon-Ho Kim, Keon Lee, Ji-Hoon Lim, Min-Ji Park, Jae-Hyuck Woo, Yun-Ho Choi
  • Publication number: 20230023847
    Abstract: Provided is a method of alleviating or treating hair loss, or promoting hair growth by administering to a subject in need thereof composition comprising an active ingredient for preventing hair loss and inducing new hair growth or hair regrowth promotion by reducing the transition period from a telogen stage to an anagen stage in the hair growth cycle, and thereby exhibiting excellent effects of preventing hair loss and promoting hair regrowth by delaying conversion to a catagen stage.
    Type: Application
    Filed: February 5, 2020
    Publication date: January 26, 2023
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Yun-Ho CHOI, Jaeyoon KIM, Jae Young SHIN, Sanghwa LEE
  • Publication number: 20200168287
    Abstract: An integrated circuit test apparatus includes: a first test unit configured to output a current for a built-in self test (BIST) progress state for each internal circuit of an integrated circuit in a BIST test mode and to determine whether each internal circuit operates normally in a wake-up mode of the integrated circuit; and a first determination module configured to determine whether each internal circuit is in a stuck state based on a change detected by the first test unit.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 28, 2020
    Applicant: HYUNDAI AUTRON CO., LTD.
    Inventors: Yeon-Ho KIM, Keon LEE, Ji-Hoon LIM, Min-Ji PARK, Jae-Hyuck WOO, Yun-Ho CHOI
  • Publication number: 20180328420
    Abstract: The present disclosure provides an operation control apparatus of a direct control solenoid valve. The apparatus includes a direct control solenoid valve configured to control an operation of a clutch via a control pressure and to supply the control pressure to a clutch by magnetic force generated by a current control; and a hydraulic pressure supply valve configured to supply a hydraulic pressure to the direct control solenoid valve, wherein the hydraulic pressure supply valve is operatively associated with a clutch control.
    Type: Application
    Filed: December 4, 2017
    Publication date: November 15, 2018
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jung Wan CHOI, Jungwoo Seo, Yun Ho Choi, Yoh Han Kim
  • Patent number: 9557808
    Abstract: A display apparatus and a method for recognizing a motion thereof are provided. The method includes setting an active area in which the externally input motion is recognizable, wherein the active area corresponds to a portion on a screen of the display apparatus, changing the display apparatus from an overall area motion recognition mode to a partial area motion recognition mode configured to only recognize the externally input motion in the active area, recognizing the externally input motion in the active area, and disabling the partial area motion recognition mode in response to the recognized externally input motion being a disabling motion configured to disable the partial area motion recognition mode.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: January 31, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-ho Shon, Jae-hyun Bae, Yun-ho Choi
  • Patent number: 9507931
    Abstract: A security device and controlling method thereof are provided. The security device includes: a storage configured to store a plurality of passwords, wherein a complexity of the passwords increases according to a security level; an inputter configured to receive a password input by a user; a detector configured to detect a security level of the received password by comparing the received password and the plurality of passwords stored in the storage; and a controller configured to provide an authority to access an element of an electronic device connected with the security device according to the detected security level.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: November 29, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byong-ki Lee, Yun-ho Choi
  • Publication number: 20160088255
    Abstract: A signal receiving apparatus includes a receiver configured to receive a first format data and a second format data, to convert the second format data to the first format, and to transmit the first format data and the converted second format data, and a decoder configured to receive the first format data and the converted second format data transmitted from the receiver and to restore one of an image data and an acoustic data from the first format data and the converted second format data.
    Type: Application
    Filed: August 14, 2015
    Publication date: March 24, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chan Sub PARK, Choon Sik JUNG, Yun Ho CHOI, Suk In MIN
  • Patent number: 9217216
    Abstract: A washing machine that circulates wash water and, at the same time, generates bubbles in the wash water. The washing machine includes a machine body, a tub disposed in the machine body. a tub cover provided above the tub, a pump mounted below the tub, and a circulation unit, having one end coupled to the pump and the other end coupled to the tub cover, to circulate wash water from the pump to the tub. The circulation unit includes a first channel, a second channel communicating with the first channel, the second channel having a smaller sectional area than the first channel, and an air inlet port provided in the second channel to allow air to be introduced into the circulation unit therethrough.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: December 22, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun Ho Choi, Jae Han Lim, Seung Hwan Chung, Young Mi Kim
  • Patent number: 9166578
    Abstract: There are provided a pulse generator capable of securing a maximum transfer rate of an IR-UWB signal, while maintaining low power consumption characteristics of an all-digital scheme, and a method for generating a fine pulse. A bandwidth of a fine pulse is determined by adjusting a difference in delay time between two adjacent pulses and a pulse is generated by selecting only one of a rising edge and a falling edge of an input pulse, and thus there is no need to remove an unnecessary batch of pulses afterwards and a transfer rate is enhanced.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: October 20, 2015
    Assignee: UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION
    Inventors: Franklin Bien, Kyung Min Na, Yun Ho Choi, Sai Kiran Oruganti
  • Publication number: 20150249861
    Abstract: A broadcasting signal receiving apparatus a method of controlling the same are provided. The broadcasting signal receiving apparatus includes: a signal receiver configured to receive a broadcasting signal including a stream of data for displaying an image; a buffer configured to store the stream; an interface configured to interface the buffer and a storage device including a storage space for reproducing the stream; a controller configured to control the interface to receive storage information about the stream from the buffer, to receive the stream from the buffer based on the received storage information, and to store the stream in the storage device.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 3, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-suk KIM, Hee-beom KANG, Hyeoung-ki KIM, Ho-shin SON, Jung-yeon WOO, Woo-sung CHUNG, Yun-ho CHOI
  • Patent number: 9118282
    Abstract: Provided are a power amplifier and a method thereof. The power amplifier power amplifier includes: a main amplifying unit receiving power; an auxiliary amplifying unit connected in parallel to the main amplifying unit; and a Balun transformer combined with the main amplifying unit and the auxiliary amplifying unit. Respectively different bias voltages are applied to the main amplifying unit and the auxiliary amplifying unit.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 25, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yun Ho Choi, Nam Sik Ryu