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: 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
  • Patent number: 11296819
    Abstract: A method of performing adaptive mode switching in a transmitter of a dual mode simultaneous wireless information and power transmission (SWIPT) system, incudes receiving received power of a receiver in a channel; comparing the received power with a predetermined threshold value; selecting one of a single tone mode or a multi-tone mode as a single/multi-tone mode based on the comparison result; selecting a modulation index based on the selected single/multi-tone mode and the received power; and transmitting the selected single/multi-tone mode, the selected modulation index, and a duty cycle to the receiver. The duty cycle is determined based on at least one of power consumed for decoding a single tone signal, power consumed for decoding a multi-tone signal, and power harvested during the channel by the receiver.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 5, 2022
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Jin Park, Jong Ho Moon, Kang Yoon Lee
  • Publication number: 20220074974
    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: Application
    Filed: September 8, 2021
    Publication date: March 10, 2022
    Applicants: 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: 20220052606
    Abstract: As inputs of a controller of a direct current (DC)-DC converter are sampled for a predetermined time and thus two-dimensional state information in which one axis is an input physical quantity and the other axis is a time is generated, the two-dimensional state information is processed by a convolutional neural network to determine and output one of a plurality of control signals. An artificial intelligence control part may operate in accordance with a plurality of operation conditions or dynamically determined operation conditions by applying different artificial intelligence engines according to operation modes.
    Type: Application
    Filed: July 3, 2021
    Publication date: February 17, 2022
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Min Young KIM, Dong Soo PARK, Kyung Duk CHOI, Young Gun PU
  • Publication number: 20210376729
    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: Application
    Filed: May 25, 2021
    Publication date: December 2, 2021
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Kyung Duk CHOI, Young Gun PU
  • Patent number: 11163407
    Abstract: An input device is provided. The input device includes a communicator for communicating with an electronic device, a pen tip provided on one end portion of the input device, an electrode part provided at a position spaced apart at a predetermined interval from the pen tip, and a processor configured to apply a predetermined frequency signal to the electrode part, and control the communicator so as to transmit, to the electronic device, the signal of which frequency changed according to a capacitance formed between the electrode part and the electronic device.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 2, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung-sun Lee, Kang-yoon Lee, Sung-hun Cho, Gwan-hyung Kim, Sang-yun Kim, Ho-chul Ryu, Sang-ho Kim
  • Patent number: 11150770
    Abstract: Disclosed is an input device. The input device includes a communicator configured to communicate with an electronic device, a pen tip provided at one end of the input device, a first electrode portion including a plurality of first sub-electrodes spaced apart from each other by a predetermined distance from the pen tip, a second electrode portion including a plurality of second sub-electrodes spaced apart from each other to correspond to each of the plurality of first sub-electrodes at a position spaced apart from the first electrode portion by a predetermined distance, a processor to provide a driving signal to the first electrode portion and the second electrode portion, generate tilt information of the input device on the basis of a plurality of capacitances formed between the plurality of first sub-electrodes and the plurality of second sub-electrodes, and transmit the tilt information to the electronic device.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 19, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyung-sun Lee, Kang-yoon Lee, Sung-hun Cho, Gwan-hyung Kim, Sang-yun Kim, Ho-chul Ryu, Sang-ho Kim
  • Patent number: 11101695
    Abstract: An electronic device is provided. The electronic device includes a receiving circuit configured to wirelessly receive power and output AC power, a rectifying circuit configured to rectify the AC power from the receiving circuit, wherein the rectifying circuit may include a first P-MOSFET configured to transfer a positive amplitude of power to an output terminal of the rectifying circuit while the AC power has the positive amplitude and to prevent transferring a negative amplitude of power to the output terminal of the rectifying circuit while the AC power has the negative amplitude, and a forward loss compensating circuit connected with the first P-MOSFET configured to reduce a threshold voltage of the first P-MOSFET while the AC power has the positive amplitude.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 24, 2021
    Assignees: Samsung Electronics Co., Ltd., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Sung-Ku Yeo, Sang-Yun Kim, Jae-Seok Park, Young-Ho Ryu, Kang-Yoon Lee, Hamed Abbasizadeh, Sang-Wook Kwon, Thi Kim Nga Truong, Dong-In Kim, Sung-Bum Park, Dong-Soo Lee, Seung Il Huh
  • Patent number: 11095169
    Abstract: A receiver that receives a simultaneous wireless information and power transfer (SWIPT) signal is provided. The receiver comprises an antenna configured to receive a SWIPT signal including a power signal and an information signal; an energy harvester configured to receive the SWIPT signal from the antenna when a communication mode is an energy harvesting (EH) mode; and an information decoder configured to receive the SWIPT signal from the antenna when the communication mode is an information decoding (ID) mode.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 17, 2021
    Assignee: Research and Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Ho Moon, Jong Jin Park, Kang Yoon Lee
  • Publication number: 20210175800
    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: Application
    Filed: December 9, 2020
    Publication date: June 10, 2021
    Applicants: SKAIChips Co., Ltd., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Kang Yoon LEE, Jong Wan JO, Kyung Duk CHOI, Young Gun PU
  • Publication number: 20210143733
    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: Application
    Filed: November 13, 2020
    Publication date: May 13, 2021
    Applicants: SKAIChips Co., 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
  • Publication number: 20210124472
    Abstract: An input device is provided. The input device includes a communicator for communicating with an electronic device, a pen tip provided on one end portion of the input device, an electrode part provided at a position spaced apart at a predetermined interval from the pen tip, and a processor configured to apply a predetermined frequency signal to the electrode part, and control the communicator so as to transmit, to the electronic device, the signal of which frequency changed according to a capacitance formed between the electrode part and the electronic device.
    Type: Application
    Filed: February 7, 2018
    Publication date: April 29, 2021
    Inventors: Hyung-sun LEE, Kang-yoon LEE, Sung-hun CHO, Gwan-hyung KIM, Sang-yun KIM, Ho-chul RYU, Sang-ho KIM
  • Publication number: 20210119726
    Abstract: A method of performing adaptive mode switching in a transmitter of a dual mode simultaneous wireless information and power transmission (SWIPT) system, incudes receiving received power of a receiver in a channel; comparing the received power with a predetermined threshold value; selecting one of a single tone mode or a multi-tone mode as a single/multi-tone mode based on the comparison result; selecting a modulation index based on the selected single/multi-tone mode and the received power; and transmitting the selected single/multi-tone mode, the selected modulation index, and a duty cycle to the receiver. The duty cycle is determined based on at least one of power consumed for decoding a single tone signal, power consumed for decoding a multi-tone signal, and power harvested during the channel by the receiver.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 22, 2021
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dong In KIM, Jong Jin PARK, Jong Ho MOON, Kang Yoon LEE
  • Publication number: 20210018464
    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: Application
    Filed: July 16, 2020
    Publication date: January 21, 2021
    Inventors: Imran Ali, Kyung Joon Han, Kang-Yoon Lee
  • Patent number: 10892930
    Abstract: Provided are a communication method based on a peak-to-average ratio (PAPR) and a transmission apparatus and a receive apparatus using the same and a communication method based on a peak-to-average ratio (PAPR) by a transmission apparatus according to an exemplary embodiment of the present disclosure includes: obtaining each of PAPR values corresponding to respective data symbols from a lookup table having a unique PAPR value; Generating a synchronization signal configured in a random sequence based on a the PAPR value of each data symbol; and transmitting the synchronization signal.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: January 12, 2021
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Kang Yoon Lee, Muhammad Riaz Ur Rehman, Truong Thi Kim Nga, Ali Imran, Hamed Abbasi Zadeh, Kwan Tae Kim, Sang Yun Kim, Dong In Kim
  • Patent number: 10819164
    Abstract: The present disclosure relates to an adaptive mode switching method for simultaneous wireless power/information transmission operating in a dual mode and an apparatus for performing the same. The adaptive mode switching apparatus for simultaneous wireless power/information transmission operating in a dual mode includes: an energy harvesting unit; a single tone information receiving unit; a multi-tone information receiving unit; a time-division switch; and an adaptive mode switching control unit which determines a communication mode and a modulation index based on a battery status, the magnitude of the received signal, and a data transmission rate and controls the time-division switch in accordance with the selected communication mode and modulation index.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 27, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Jin Park, Jong Ho Moon, Kang Yoon Lee
  • Patent number: 10708102
    Abstract: A simultaneous wireless information and power transmission method includes: transmitting an energy transfer signal comprising a peak-to-average power ratio (PAPR) corresponding to information to be transmitted at a first side; measuring the PAPR by receiving the energy transfer signal at a second side; and recovering the information from the measured PAPR at the second side.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 7, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In Kim, Jong Ho Moon, Jong Jin Park, Kang Yoon Lee
  • Publication number: 20200195062
    Abstract: A receiver that receives a simultaneous wireless information and power transfer (SWIPT) signal is provided. The receiver comprises an antenna configured to receive a SWIPT signal including a power signal and an information signal; an energy harvester configured to receive the SWIPT signal from the antenna when a communication mode is an energy harvesting (EH) mode; and an information decoder configured to receive the SWIPT signal from the antenna when the communication mode is an information decoding (ID) mode.
    Type: Application
    Filed: November 22, 2019
    Publication date: June 18, 2020
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Dong In KIM, Jong Ho MOON, Jong Jin PARK, Kang Yoon LEE