Patents by Inventor Kyeong-Hwan Park
Kyeong-Hwan Park 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).
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Publication number: 20240139436Abstract: A method of controlling injection of a drug includes receiving a captured medical image of an object, identifying an object of interest from the medical image, based on a position and a shape of the object of interest, determining a drug injection position, based on the position and the shape of the object of interest, determining a plurality of electrode insertion positions, the plurality of electrodes being configured to supply a current to move the drug, defining a drug movement path based on a shape of the identified object of interest, generating current sequence information to move the drug along the drug movement path, the current sequence information defining a current applied over time to each of the plurality of electrodes, and outputting the current sequence information to a current source apparatus.Type: ApplicationFiled: October 30, 2023Publication date: May 2, 2024Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, UIF (UNIVERSITY INDUSTRY FOUNDATION), YONSEI UNIVERSITY, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Young Bin Choy, Han Bi Ji, Chang Hee Min, Jae Hoon Han, Won Seok Chang, Jun Won Park, Chang-Hwan Im, Kyeong-Gu Lee
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Publication number: 20240125848Abstract: A leakage current detection circuit includes: a mirror circuit configured to copy a leakage current flowing through a node and generate a copy current in a copy node; an oscillation circuit including a charge storage unit, the oscillation circuit being connected to the copy node, charged with the copy current, and configured to generate an oscillation signal by charging and discharging the charge storage unit; and a calculation circuit configured to calculate an amount of the leakage current based on the oscillation signal.Type: ApplicationFiled: March 1, 2023Publication date: April 18, 2024Applicant: SK hynix Inc.Inventors: Jong Seok JUNG, Chan Keun KWON, Kyeong Hwan PARK, Young Kwan LEE, Suk Hwan CHOI
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Patent number: 11921139Abstract: A differential mode converter that includes an input mode converter configured to convert an input voltage in a single-ended mode into a first differential voltage and a second differential voltage to be output, the first differential voltage and the second differential voltage being symmetric with respect to a reference voltage and having a form of a square wave; and a chopper configured to receive the first differential voltage and the second differential voltage and determine a first chopping voltage and a second chopping voltage based on the first differential voltage and the second differential voltage to output the first chopping voltage and the second chopping voltage, the first chopping voltage and the second chopping voltage being symmetric with respect to the reference voltage and having a form of a DC voltage.Type: GrantFiled: October 17, 2019Date of Patent: March 5, 2024Assignee: ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Joon Kim, Seungmok Kim, Kyeong-Hwan Park
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Patent number: 11313844Abstract: In a multi-channel resistance-based gas sensor system, the multi-channel array includes gas sensor channels respectively connected to resistive type gas sensors. The pre-processing unit selects a current mode, a resistance mode, or an external resistance mode, analyzes a sensing value obtained from any one of the gas sensor channels based on the selected mode and outputs a voltage value corresponding thereto. The analog-to-digital converter (ADC) converts the voltage value to digital data. The control unit controls the pre-processing unit to execute one of the current mode for analyzing a sensing value smaller than or equal to a preset first resistance value, the external resistance mode for analyzing a sensing value greater than or equal to a preset second resistance value greater than the preset first resistance value and the resistance mode for analyzing a sensing value between the preset resistance first value and the preset second resistance value.Type: GrantFiled: June 22, 2017Date of Patent: April 26, 2022Assignee: ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Joon Kim, Subin Choi, Kyeong-Hwan Park
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Publication number: 20210132017Abstract: In a multi-channel resistance-based gas sensor system, the multi-channel array includes gas sensor channels respectively connected to resistive type gas sensors. The pre-processing unit selects one of a current mode, a resistance mode, and an external resistance mode, analyzes a sensing value obtained from any one of the gas sensor channels based on the selected mode and outputs a voltage value corresponding thereto. The ADC converts the voltage value to digital data. The control unit controls the pre-processing unit to execute one of the current mode for analyzing a sensing value smaller than or equal to a preset first resistance value, the external resistance mode for analyzing a sensing value greater than or equal to a preset second resistance value greater than the preset first resistance value and the resistance mode for analyzing a sensing value between the preset resistance first value and the preset second resistance value.Type: ApplicationFiled: June 22, 2017Publication date: May 6, 2021Applicant: ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Joon KIM, Subin CHOI, Kyeong-Hwan PARK
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Publication number: 20200052588Abstract: A differential mode converter that includes an input mode converter configured to convert an input voltage in a single-ended mode into a first differential voltage and a second differential voltage to be output, the first differential voltage and the second differential voltage being symmetric with respect to a reference voltage and having a form of a square wave; and a chopper configured to receive the first differential voltage and the second differential voltage and determine a first chopping voltage and a second chopping voltage based on the first differential voltage and the second differential voltage to output the first chopping voltage and the second chopping voltage, the first chopping voltage and the second chopping voltage being symmetric with respect to the reference voltage and having a form of a DC voltage.Type: ApplicationFiled: October 17, 2019Publication date: February 13, 2020Applicant: ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Joon KIM, Seungmok KIM, Kyeong-Hwan PARK
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Patent number: 10277243Abstract: An SAR ADC combined with a flash ADC includes a clock generator, a DAC and a comparator. The SAR ADC combined with the flash ADC further includes an SAR logic unit using a successive approximation register control to determine, while a clock signal is a first state that is either high or low, a part of digital bits of the input signal based on a signal outputted from the comparator and control the DAC to generate a first analog signal based on the first determined digital bits and a flash ADC using a flash control to determine, during a second state switched from the first state, a remaining part of the digital bits of the input signal based on the first analog signal and control the DAC to generate a second analog signal based on the second determined digital bits in the second state.Type: GrantFiled: May 10, 2018Date of Patent: April 30, 2019Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)Inventors: Jae Joon Kim, Kyeong Hwan Park
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Publication number: 20180331690Abstract: An SAR ADC combined with a flash ADC includes a clock generator, a DAC and a comparator. The SAR ADC combined with the flash ADC further includes an SAR logic unit using a successive approximation register control to determine, while a clock signal is a first state that is either high or low, a part of digital bits of the input signal based on a signal outputted from the comparator and control the DAC to generate a first analog signal based on the first determined digital bits and a flash ADC using a flash control to determine, during a second state switched from the first state, a remaining part of the digital bits of the input signal based on the first analog signal and control the DAC to generate a second analog signal based on the second determined digital bits in the second state.Type: ApplicationFiled: May 10, 2018Publication date: November 15, 2018Inventors: Jae Joon KIM, Kyeong Hwan PARK
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Publication number: 20160206767Abstract: The present invention provides a sterilizing apparatus using wet gaseous chlorine dioxide, the sterilizing apparatus comprising: a chamber provided with a sterilization chamber; a gaseous chlorine dioxide generating part for generating wet gaseous chlorine dioxide from stabilized chlorine dioxide; a photoionization detecting part for measuring the concentration of the gaseous chlorine dioxide in the chamber; an electronic control part for controlling a sterilization process; a gaseous chlorine dioxide adsorption removal part for removing gaseous chlorine dioxide remaining in the chamber after the sterilization process has been completed; an operation panel consisting of an input portion for inputting sterilization conditions and a display portion for displaying a sterilization state; and a printer for outputting a sterilization history.Type: ApplicationFiled: August 7, 2014Publication date: July 21, 2016Inventors: Kyoung Ho PARK, Kyeong Hwan PARK, Min Gyu HWANG, Keoung Hwa LEE
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Patent number: 9377910Abstract: A touch sensing apparatus includes a touch screen panel including first electrodes along a first direction and second electrodes along a second direction crossing the first direction to form capacitances with the first electrodes, a driving circuit configured to supply a driving signal to the first electrodes; and a sensing circuit configured to detect output sensing signals from the second electrodes and recognize a touch input based on the output sensing signals. The sensing circuit includes a switching unit configured to modulate the output sensing signals by providing codes as respective input sensing signals to the second electrodes, an amplifying unit configured to amplify the modulated sensing signals, an analog-digital conversion unit configured to convert the amplified sensing signals into digital sensing signals, and a controller configured to demodulate the digital sensing signals and detect a touch input and its position from the demodulated sensing signals.Type: GrantFiled: September 13, 2013Date of Patent: June 28, 2016Assignees: Samsung Display Co., Ltd., Ulsan National Institute of Science and TechnologyInventors: Soon-Sung Ahn, Franklin Bien, Jae-Joon Kim, Sang-Hyune Heo, Kyeong-Hwan Park
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Publication number: 20140313157Abstract: A touch sensing apparatus includes a touch screen panel including first electrodes along a first direction and second electrodes along a second direction crossing the first direction to form capacitances with the first electrodes, a driving circuit configured to supply a driving signal to the first electrodes; and a sensing circuit configured to detect output sensing signals from the second electrodes and recognize a touch input based on the output sensing signals. The sensing circuit includes a switching unit configured to modulate the output sensing signals by providing codes as respective input sensing signals to the second electrodes, an amplifying unit configured to amplify the modulated sensing signals, an analog-digital conversion unit configured to convert the amplified sensing signals into digital sensing signals, and a controller configured to demodulate the digital sensing signals and detect a touch input and its position from the demodulated sensing signals.Type: ApplicationFiled: September 13, 2013Publication date: October 23, 2014Applicants: Ulsan National Institute of Science and Technology (UNIST), Samsung Display Co., Ltd.Inventors: Soon-Sung Ahn, Franklin Bien, Jae-Joon Kim, Sang-Hyune Heo, Kyeong-Hwan Park