Patents by Inventor Kang-Yoon Lee

Kang-Yoon 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: 20240001939
    Abstract: According to various embodiment of the present invention, in a diagnosis system including a sensing module that senses the state of a motor is installed in a car, disclosed are a method for determining failure of a motor in a car comprising the steps of: (a) acquiring sensed values by sensing the state variables of the motor by the sensing module; (b) extracting two or more feature values by converting the sensed values acquired by the sensing module; (c) converting the two or more feature values into scaled feature values based on at least one scaling algorithm; and (d) determining a state of the motor based on a learned labeling algorithm and the scaled feature value, and setting a label representing the state of the motor to the scaled feature value corresponding to the state of the motor.
    Type: Application
    Filed: June 30, 2023
    Publication date: January 4, 2024
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Dong Gyun KIM, Dae Young CHOI, Jong Wan JO, Young Gun PU
  • Patent number: 11859204
    Abstract: A mold for producing a hydrogel support for a 3-dimensional (3D) cell culture, includes: an upper mold comprising a base and a plurality of upper unit molds protruding downward from the base to form accommodating portions of a female type corresponding to shapes of hydrogel supports, having through holes at bottoms thereof, and patterned at a lower portion of the base; a lower mold where a plurality of lower unit molds are patterned, the plurality of lower unit molds formed in a female type to respectively accommodate the plurality of upper unit molds protruding downward and having sealed lower portions; and an ejecting unit for separating, from the accommodating portions of the plurality of upper unit molds, the hydrogel supports that are coagulated after being inserted into the through holes respectively formed in the plurality of upper unit molds.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: January 2, 2024
    Assignee: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Sik Yoon, Ye Seon Lim, Ye Jin Ok, Sun Young Hwang, Kang Oh Lee, Seung Soo Lee
  • Publication number: 20230420989
    Abstract: Provided is a device-to-device (D2D)-based wireless power receiving device including an observation part configured to monitor a battery, an estimator configured to estimate usage and a workload of the battery on the basis of a result of monitoring the battery, a mode determiner configured to determine required power of the battery on the basis of the usage and the workload, and determine a reception mode according to the required power, and a power receiver configured to wirelessly receive power from another device according to the reception mode. Accordingly, wireless power charging efficiency can be maximized.
    Type: Application
    Filed: June 28, 2023
    Publication date: December 28, 2023
    Applicant: SKAIChips Co., Ltd.
    Inventors: Kang Yoon LEE, Sung June BYUN, Jong Wan JO, Ji Hoon SONG, Young Gun PU
  • Patent number: 11826441
    Abstract: Provided is a cleansing foam cosmetic composition comprising amino acid-based surfactants, and more particularly to a cleansing foam cosmetic composition in which a nonionic or amphiprotic surfactant is not used, and which comprises amino acid-based surfactants consisting of only sodium lauroyl glutamate, sodium cocoyl glycinate, and potassium cocoyl glycinate.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: November 28, 2023
    Assignees: KOLMAR KOREA CO., LTD., SHINSEGAE INTERNATIONAL INC.
    Inventors: Yan Sun, Min Kyung Kim, Young Seok Kim, Yi Soo Bae, Jun Oh Kim, Sang Keun Han, So Yoon Baek, Kang Tae Lee, So Hyeon Mok
  • Publication number: 20230368591
    Abstract: According to various embodiment of the present invention, in a diagnosis system including a sensing module that senses the state of a motor is installed in a car, disclosed are a method for determining failure of a motor in a car comprising the steps of: (a) acquiring sensed values by sensing the state variables of the motor by the sensing module; (b) extracting two or more feature values by converting the sensed values acquired by the sensing module; (c) generating two clusters which classify and include the two or more feature values based on the two or more feature values and determining a normal cluster among the two clusters; and (d) determining the state of the motor as a failure-expected state or a safe state by applying at least one classifier to the feature values included in the normal cluster.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 16, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Dong Gyun KIM, Dae Young CHOI, Jong Wan JO, Young Gun PU
  • Publication number: 20230283106
    Abstract: Provided is a power supply apparatus for self-powered device including a power module configured to supply first driving power, a sensor module configured to be operated by the first driving power, and an energy harvesting module configured to select energy power with a higher signal intensity from among energy power from energy sources and harvest energy using the selected energy power as second driving power.
    Type: Application
    Filed: March 5, 2022
    Publication date: September 7, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Young Gun PU, Byeong Gi JANG, Dong Soo PARK, Joon Hong PARK, Jae Bin KIM, Yun Gwan KIM
  • Patent number: 11686701
    Abstract: A method of calibrating a nanofluidic device including a plurality of nanopore channels, a plurality of gating nanoelectrodes, and a plurality of sensing nanoelectrodes, includes applying a selecting voltage across a gating nanoelectrode of the plurality of gating nanoelectrodes to select a nanopore channel. The method also includes tuning the nanopore channel by applying a first biasing voltage across a sensing electrode of the plurality of sensing nanoelectrodes, and receiving a plurality of currents over a plurality of frequencies. The method further includes generating a calibration data set from the pluralities of frequencies and currents. Moreover, the method includes comparing the calibration data set with a reference data set. In addition, the method includes when the calibration data set differs from the reference data set by more than a predetermined threshold, repeating the method with a second biasing voltage different from the first biasing voltage.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: June 27, 2023
    Assignee: PALOGEN, INC.
    Inventors: Imran Ali, Kyung Joon Han, Kang-Yoon Lee
  • Publication number: 20230185252
    Abstract: Provided are a scalable analog passive intermodulation (PIM) module, a method of controlling analog PIM, a signal processing circuit, and a sensor device. The scalable analog PIM module includes a first plural number of digital-to-analog converters (DACs), a first plural number of static random access memory (SRAM) calculators connected to the first plural number of DACs, at least one analog-to-digital converter (ADC) connected to the first plural number of SRAM calculators and configured to convert an analog convolution result signal into digital convolution data, and an analog PIM controller configured to output an enable control signal for enabling a second number, which is equal to or less than first plural number, of SRAM calculators among the first plural number of SRAM calculators to the first plural number of SRAM calculators on the basis of the convolution data output from the ADC.
    Type: Application
    Filed: May 27, 2022
    Publication date: June 15, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Sung June BYUN, Dae Young CHOI, Young Gun PU, Joon Mo YOO, Yeon Jae JUNG, Hyung Ki HUH, Seok Kee KIM
  • Publication number: 20230188103
    Abstract: A technology related to a power amplifier used in a wireless communication circuit is disclosed. A radio frequency (RF) power amplifier includes a plurality of unit differential amplifiers of which inputs are connected to a common input terminal and outputs are connected to a common adder, and having a gain of a weight of a corresponding bit of a binary gain control word. Each of the differential amplifiers may be configured as a complementary metal-oxide semiconductor (CMOS) differential cascode amplifier. In addition, the RF power amplifier may include a structure in which a plurality of attenuators of the same structure are cascade-connected so that an attenuation rate may be linearly and digitally controlled and an output of each attenuator is connected to an output adder through differential buffers of which turn-on and turn-off are controlled by a controller.
    Type: Application
    Filed: December 10, 2022
    Publication date: June 15, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Reza EFTEKHARI RAD, Yeon Jae JUNG, Jong Wan JO
  • Publication number: 20230155557
    Abstract: Disclosed is a technology related to a low noise amplifier applied between an RF receiver and an RF switch. A phase difference matching circuit having the same phase difference as a positive gain amplifier is added to an output terminal of an attenuator of a low noise amplifier having a variable gain switching structure. In addition, a variable impedance circuit connected to an output terminal of the positive gain amplifier and an output terminal of a phase difference matching unit to finely adjust the phase difference of each output terminal may be further included.
    Type: Application
    Filed: November 10, 2022
    Publication date: May 18, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Behnam SAMADPOOR RIKAN, Young Gun PU, Jong Wan JO
  • Publication number: 20230155613
    Abstract: A power radio frequency (RF) switch used in wireless communication is disclosed. A boosted switching control signal, which swings between a boosted supply voltage in which a system supply voltage is boosted and a negative supply voltage in which a polarity of the system supply voltage is inverted, is applied to a gate of a high-voltage transistor. Further, a substrate control signal which is synchronized with the boosted switching control signal, and swings between the negative supply voltage and a reference voltage may be applied to a substrate of the high-voltage transistor thereof.
    Type: Application
    Filed: November 10, 2022
    Publication date: May 18, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Behnam SAMADPOOR RIKAN, Young Gun PU, Jong Wan JO
  • Patent number: 11635780
    Abstract: Provided is a maximum power point tracking (MPPT) apparatus for an energy harvesting system and an MPPT control method. A count value of the time for an output voltage of a direct current (DC)-DC converter to reach a high reference voltage is used to change and output a control parameter of the DC-DC converter for maximum power.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: April 25, 2023
    Assignees: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon Lee, Jong Wan Jo, Kyung Duk Choi, Young Gun Pu
  • Patent number: 11598793
    Abstract: A current sensor automatically adjusting an offset voltage, includes an input corrector, upon receiving a first voltage, a second voltage, and a control signal, configured to correct either one or both of the first voltage and the second voltage to reduce an absolute value of a difference between the first voltage and the second voltage based on the control signal, and output a correction result; an input amplifier configured to amplify a voltage output from the input corrector; an output amplifier configured to generate an output voltage when a voltage amplified by the input amplifier is input; a controller including a switch connected to one of voltages amplified by the input amplifier to be grounded when a difference between the first voltage and the second voltage is larger than a first threshold value; and a correction circuit controller configured to generate the control signal to input to the input corrector.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: March 7, 2023
    Assignees: SKAICHIPS CO., LTD., Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon Lee, Byeong Gi Jang, Jong Wan Jo, Min Young Kim, Dong Soo Park, Kyung Duk Choi, Young Gun Pu
  • Publication number: 20230014594
    Abstract: Disclosed are an artificial intelligence algorithm-based wireless power transmitter, wireless power receiver, and wireless power charging system that are capable of high-speed response to environmental changes and that can optimize the power efficiency of a wireless power receiver, estimate a dynamic location from a signal received from the wireless power receiver using artificial intelligence technology, and dynamically transmit wireless power to a prioritized wireless power receiver according to a power state.
    Type: Application
    Filed: April 29, 2022
    Publication date: January 19, 2023
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Dong Gyun KIM, Sung Jun Byun, Jae Bin KIM, Joon Mo YOO, Young Gun PU, Yeon Jae JUNG, Hyung Ki HUH
  • Patent number: 11469658
    Abstract: Disclosed is a power supply apparatus including a DC-DC converter implemented as one integrated circuit. A duty of a switching pulse of a DC-DC conversion unit is controlled according to a phase difference between a feedback clock signal and a reference clock signal having a frequency proportional to an output voltage of the DC-DC conversion unit. The duty of the switching pulse may be controlled from an output of a charge pump to be charged and discharged according to the phase difference signal between the feedback clock signal and the reference clock signal.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: October 11, 2022
    Assignees: SKAIChipsCo., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon Lee, Jong Wan Jo, Kyung Duk Choi, Young Gun Pu
  • Patent number: 11456664
    Abstract: The present invention provides a technique for a power supply, and particularly, a buck-boost DC-DC converter which is advantageous for energy harvesting from a low voltage. An LC resonant unit generates a pair of clock type signals having phases opposite to each other from an input signal. These signals are supplied to the clock input terminals of the Dickson charge pumps connected in series and converted into power signals having an amplified voltage so as to match the rated input specification of the buck-boost DC-DC converter of a post-stage.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: September 27, 2022
    Assignees: SKAIChipsCo., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon Lee, Reza Eftekhari Rad, Qurat ul Ain, Jong Wan Jo, Kyung Duk Choi, Young Gun Pu
  • Patent number: 11374581
    Abstract: A technology related to an electronic circuit, specifically, a phase locked loop or a frequency synthesizing apparatus, is disclosed. The frequency synthesizing apparatus includes an injection locked frequency divider and a replica frequency divider having the same circuit configuration as the injection locked frequency divider. A control value required for self-oscillating at a target frequency using the replica frequency divider is determined. When the injection locked frequency divider fails injection locking on a first attempt, the injection locking may be attempted using the determined control value. On the first attempt, the control value of the injection locked frequency divider may be determined and stored in advance according to a temperature and a supply voltage.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: June 28, 2022
    Assignees: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon Lee, Jong Wan Jo, Young Gun Pu, Byeong Gi Jang, Joon Hong Park, Dong Soo Park, Jae Bin Kim, Yun Gwan Kim
  • Publication number: 20220149787
    Abstract: A technology related to an electronic circuit, specifically, a phase locked loop or a frequency synthesizing apparatus, is disclosed. The frequency synthesizing apparatus includes an injection locked frequency divider and a replica frequency divider having the same circuit configuration as the injection locked frequency divider. A control value required for self-oscillating at a target frequency using the replica frequency divider is determined. When the injection locked frequency divider fails injection locking on a first attempt, the injection locking may be attempted using the determined control value. On the first attempt, the control value of the injection locked frequency divider may be determined and stored in advance according to a temperature and a supply voltage.
    Type: Application
    Filed: July 26, 2021
    Publication date: May 12, 2022
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Young Gun PU, Byeong Gi JANG, Joon Hong PARK, Dong Soo PARK, Jae Bin KIM, Yun Gwan KIM
  • Publication number: 20220132439
    Abstract: A power management apparatus, includes an artificial intelligence (Al) controller configured to monitor a user pattern, based on frequency band selection information of all users using a base station, to predict the user pattern, and a DC-DC converter configured to output a supply voltage based on the predicted user pattern.
    Type: Application
    Filed: October 22, 2021
    Publication date: April 28, 2022
    Applicants: SKAICHIPS CO., LTD., Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon LEE, Jong Wan JO, Young Gun PU, Dong Soo PARK, Joon Hong PARK, Jae Bin KIM, Yun Gwan KIM
  • Publication number: 20220117562
    Abstract: The present invention relates to an integrated circuit for processing biosignals, a biosignal processing apparatus, and a biosignal processing system, and the integrated circuit includes: a digital conversion unit for converting an analog biosignal input through a biosignal input terminal into a digital biodata; and an AI block for processing a plurality of biodata converted through the digital conversion unit according to an artificial intelligence processing flow, and outputting a result data according to processing of the plurality of biodata.
    Type: Application
    Filed: August 5, 2021
    Publication date: April 21, 2022
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Young Gun PU, IMRAN ALI, Dong Gyu KIM, Joon Hong PARK, Dong Gyun KIM, Yun Gwan KIM, Jae Bin KIM, Dong Soo PARK, Sung June BYUN