Patents by Inventor Hyung-Min Lee

Hyung-Min 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: 20240142362
    Abstract: Disclosed is a micro concentration monitoring apparatus. A micro concentration monitoring apparatus includes: a variable frequency driver circuit unit that is coupled to a MEMS sensor and supplies constant power to the MEMS sensor within a set bandwidth; and a reading circuit unit that measures a resonance frequency displacement value of the MEMS sensor according to a change in dielectric constant of a target based on power supplied from the variable frequency driver circuit, and measures the resonance frequency displacement value of the MEMS sensor through a plurality of measurement channels, respectively.
    Type: Application
    Filed: September 22, 2023
    Publication date: May 2, 2024
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Hyung Min LEE, Seung Beom KU
  • Publication number: 20240133728
    Abstract: A potassium nitrate level detection sensing module M in a strengthening furnace according to the present invention includes a level detection means, which is installed inside a glass strengthening furnace, installed at a height equal to a level line of strengthening liquid to be filled in the strengthening furnace F, and generates an electrical signal having a set threshold or more or an electrical signal having the set threshold or less when it comes into contact with the strengthening liquid and detects that the strengthening liquid filled in the glass strengthening furnace F has reached a set strengthening liquid level line. The potassium nitrate level detection sensing module in the strengthening furnace according to the present invention having such a configuration can automatically identify that potassium nitrate in a liquid state, which is melted in the strengthening furnace, has reached the set level line in the strengthening furnace.
    Type: Application
    Filed: January 20, 2022
    Publication date: April 25, 2024
    Inventors: Hyung Sup LEE, Yun Hoe KIM, Hyun Min KIM, Hyun Yeol YOON
  • Publication number: 20240138174
    Abstract: Provided are an organic electronic element comprising an anode, a cathode, and an organic material layer between the anode and the cathode, and an electronic device comprising the organic electronic element, wherein the organic material layer comprises each compound represented by Formula 1, Formula 2, or Formula 3, thereby the driving voltage of the organic electronic element can be lowered and the luminous efficiency and lifespan can be improved.
    Type: Application
    Filed: March 15, 2023
    Publication date: April 25, 2024
    Applicant: DUK SAN NEOLUX CO., LTD.
    Inventors: Hyo Min JIN, Bu Yong YUN, Jae Ho KIM, Hyung Dong LEE, Chi Hyun PARK
  • Patent number: 11941845
    Abstract: An apparatus for estimating a camera pose according to an embodiment of the present disclosure includes a similar image searcher, a clusterer, and an estimator. The similar image searcher searches for a plurality of images similar to an input image, from among a plurality of previously-stored images, based on the input image. The clusterer creates a cluster including at least some similar images meeting predetermined conditions, from among the plurality of similar images, based on viewpoint data tagged to each of the plurality of similar images. The estimator estimates a pose of a camera that has generated the input image, based on the cluster.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 26, 2024
    Assignee: MAXST CO., LTD.
    Inventors: Sang Rok Kim, Kyu Sung Cho, Jae Wan Park, Tae Yun Son, Hyung Min Lee
  • Patent number: 11929140
    Abstract: A memory controller comprising a DMA master device configured to provide a first data group to a non-volatile memory (NVM) device, a program buffer memory configured to temporarily store the first data group before the DMA master device provides the first data group to the NVM device, an exclusive OR computing circuit configured to perform an exclusive OR computation and an accumulation on a plurality of data included in the first data group provided from the program buffer memory to generate a first recovery data, after the DMA master device provides the first data group to the NVM device, and a buffer slave device including a first program recovery buffer memory configured to store the first recovery data and provide the first recovery data from the first program recovery buffer memory to the program buffer memory, in response to a program failure signal, may be provided.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: March 12, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Min Lee, Hyung Jin Kim, Seong Wan Hong
  • Patent number: 11918781
    Abstract: An infusion flow regulator includes: a main body having an inlet through which fluid is introduced and an outlet through which the fluid is discharged; and a rotary dial rotatably coupled to the main body, with a sealing member interposed therebetween, so as to regulate a flow rate of the fluid, in which the rotary dial includes a regulating flow path having a shape of a recessed groove in cross section with a first width and a first height, and the regulating flow path includes a first region in which the first width is constant and the first height is decreased, and a second region in which both the first width and the first height are decreased. By the aforementioned configuration, the infusion flow regulator for the fluid can accurately regulate the flow rate even in a region where the flow rate of the fluid is very small.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: March 5, 2024
    Assignee: Korea Aerospace Research Institute
    Inventors: Poo Min Park, Hyung Mo Kim, Tae Choon Park, Young Seok Kang, Jae Sung Huh, Doo Yong Lee
  • Publication number: 20240068460
    Abstract: A variable displacement swash plate type compressor control method and a variable displacement swash plate type compressor controlled thereby may include a first determination step of determining whether liquid refrigerant exists within the variable displacement swash plate type compressor; a first operation step of applying power to the field coil assembly and of not applying current to the electronic control valve, when it is determined in the first determination step S1 that the liquid refrigerant exists; a second determination step of comparing an elapsed period of time of operating in the first operation step with a predetermined reference time; and a second operation step of maintaining the power applied in the first operation step to the field coil assembly and applying current to the electronic control valve when the elapsed period of time is greater than or equal to the reference time.
    Type: Application
    Filed: July 13, 2022
    Publication date: February 29, 2024
    Inventors: Hyung In Choi, Seong Gyu Gong, Young Min Kim, Eun Gi Son, Joo Young Lee, Soo Cheol Jeong
  • Publication number: 20240069689
    Abstract: A method of supporting divided screen areas and a mobile terminal employing the same are disclosed. The method includes: generating input signals for one of sequentially and simultaneously activating a plurality of user functions; activating the user functions according to generated input signals; dividing a screen into divided screen areas that correspond to activated user functions; and outputting functional view areas associated with the activated user functions to the corresponding divided screen areas.
    Type: Application
    Filed: September 20, 2023
    Publication date: February 29, 2024
    Inventors: Hyung Min YOOK, Sung Sik YOO, Kang Won LEE, Myeong Lo LEE, Young Ae KANG, Hui Chul YANG, Yong Ki MIN
  • Patent number: 11915998
    Abstract: In one example, a semiconductor device comprises a substrate having a top surface and a bottom surface, an electronic device on the bottom surface of the substrate, a leadframe on the bottom surface of the substrate, the leadframe comprising a paddle, wherein the paddle is coupled to the electronic device, and a lead electrically coupled to the electronic device. The semiconductor device further comprises a first protective material contacting the bottom surface of the substrate and a side surface of the electronic device.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: February 27, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Hyung Jun Cho, Kyoung Yeon Lee, Tae Yong Lee, Jae Min Bae
  • Publication number: 20240053783
    Abstract: A low dropout (LDO) regulator includes: one or more power transistors configured to dispose between an input node and an output node, wherein the input node is a node to which an input voltage is applied and the output node is a node from which an output voltage is output; a voltage comparing unit configured to generate a comparative signal based on a difference between the output voltage and a first reference voltage; a digital control unit configured to generate a control signal for gating of the one or more power transistors in response to the comparative signal; and a gate driving unit configured to output a gating signal for the one or more power transistors in response to the control signal, wherein the gating signal is corresponding to one of the input voltage and a negative of the input voltage.
    Type: Application
    Filed: June 27, 2023
    Publication date: February 15, 2024
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Hyung-Min Lee, Hyunjun Park, Woojoong Jung
  • Patent number: 11870277
    Abstract: Provided is a back-data transmission circuit generating a sensing signal using an arbitrary sensor, generating an input signal by digitally converting the sensing signal, generating a modulation signal by performing a modulation operation when there is a change in the input signal, inducing the modulation signal and transmitting the modulation signal to the transmitting terminal, measuring an induction signal induced from a receiving terminal to the transmitting terminal, and generating an output signal by calculating a slope of a voltage change represented by the induction signal.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: January 9, 2024
    Assignee: Korea University Research and Business Foundation
    Inventors: Hyung-Min Lee, Hyun-Su Lee
  • Patent number: 11842770
    Abstract: A processing unit, including a first circuit, and a first circuit element connected to the first circuit. The first circuit element is at least charged by the first circuit.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: December 12, 2023
    Assignee: International Business Machines Corporation
    Inventors: Tayfun Gokmen, Seyoung Kim, Hyung-Min Lee, Wooram Lee, Paul Michael Solomon
  • Publication number: 20230353031
    Abstract: Disclosed are a method and an apparatus of digital feedback based adaptive delay time control for a high efficiency active rectifier. According to the present invention, provided is an apparatus for digital feedback based adaptive delay time control, which adaptively compensates a driving delay of a switch by controlling a time of a delay circuit through a digital feedback-based compensation technique, and operate the switch at an appropriate timing in spite of changes in operation environments such as an input voltage and a load to increase the efficiency of an AC-DC rectifier.
    Type: Application
    Filed: March 27, 2023
    Publication date: November 2, 2023
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Hyung Min LEE, Ji San AHN
  • Patent number: 11705046
    Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: July 18, 2023
    Assignees: SAMSUNG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH & BUSINESS FOUNDATION
    Inventors: Young Soo Hwang, Joon Chul Goh, Oh Jo Kwon, Ki Duk Kim, Jeong Min Kim, Bong Hyun You, Hyung Min Lee, Seung Hun Choi
  • Publication number: 20230195367
    Abstract: Embodiments of the disclosed technology relate to a memory system, a memory controller, and an operation method of the memory system. Based on embodiments of the disclosed technology, the memory system may suspend a target operation, which is a program operation or an erase operation, based on whether or not to execute a first operation of resetting a reference read bias when a failure occurs in a read operation executed after the target operation is suspended, and a number of times the target operation is suspended. Accordingly, the memory system is capable of preventing a problem in that the end time of a program operation or an erase operation is excessively delayed, and controlling the number of times a program operation or an erase operation is suspended.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Inventors: Seung Gu JI, Hyung Min LEE
  • Publication number: 20230181927
    Abstract: Disclosed herein is a sub-retinal prosthesis using a multi-photodiode sensing technology. The sub-retinal prosthesis using a multi-photodiode sensing technology includes: a pixel array including a plurality of pixels of which k pixels are set as a unit group; and a digital controller controlling the pixel array to activate one of the k pixels as a stimulation electrode and activate the other k-1 pixels as return electrodes, wherein the unit group includes k photodiodes, a sensing circuit and a current driver, the sensing circuit outputs a stimulation parameter using currents each generated by the k photodiodes according to irradiation of light as an input, and the current driver outputs a stimulation current corresponding to the stimulation parameter.
    Type: Application
    Filed: December 9, 2022
    Publication date: June 15, 2023
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Hyung-Min LEE, Seong-Woo KIM, Kyeongho EOM
  • Patent number: 11678012
    Abstract: The present invention relates to an artificial intelligence (AI), which emulates functions of a human brain, such as recognition and reasoning, by utilizing a machine learning algorithm such as deep learning, and relates to context awareness based artificial intelligence application technology for obtaining interest information of a user from an image displayed to the user.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: June 13, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Do Gon Kim, Kyung Su Kim, Sung Jin Kim, Kumar Ankit, Gang Hui Lee, Hyung Min Lee, Jae Hyun Park
  • Patent number: 11656790
    Abstract: Memory systems, memory controllers, and operation methods of the memory systems are disclosed. In one example aspect, the memory system may suspend a target operation, such as a program operation or an erase operation, based on whether or not to execute a first operation of resetting a reference read bias when a failure occurs in a read operation executed after the target operation is suspended, and a number of times the target operation is suspended. In this way, the memory system may reduce a delay associated with the suspension of program operations and erasure operations.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: May 23, 2023
    Assignee: SK HYNIX INC.
    Inventors: Seung Gu Ji, Hyung Min Lee
  • Publication number: 20230085353
    Abstract: A capacitor-less low dropout regulator includes: a capacitor-less dual feedback loop unit including a plurality of feedback resistors, an error amplifier, and a transconductance cell to form a main loop passing through the error amplifier and a sub-loop passing through the gm cell without passing through the error amplifier; a dynamic compensation unit connected to a first main pole located at an output of the error amplifier and a second main pole located at an output of the gm cell to provide dynamic frequency compensation using a Miller effect to the first main pole and the second main pole according to a load current of the capacitor-less dual feedback loop unit; and a load current measurement unit configured to measure a load current of a third main pole formed at a load of the dual feedback loop unit to provide the load current to the dynamic compensation unit.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 16, 2023
    Applicant: Korea University Research and Business Foundation
    Inventors: Hyung-Min LEE, Hyun Jun PARK
  • Publication number: 20230041306
    Abstract: An error compensation circuit for analog capacitor memory circuits includes a first transistor and a second transistor with gates connected respectively to top and bottom of an analog memory capacitor to read a voltage charged in the analog memory capacitor; a first switch and a second switch connected respectively to the first transistor and the second transistor to select the voltage to read; a first capacitor and a second capacitor to charge an electric charge to compensate or refresh the analog memory capacitor according to on/off of the first switch and the second switch; and an input terminal connected to sources of the first transistor and the second transistor to apply the voltage to operate the circuit. Accordingly, it is possible to compensate for an unintended phenomenon of the analog capacitor memory or refresh a change in memory value caused by leakage.
    Type: Application
    Filed: June 28, 2022
    Publication date: February 9, 2023
    Applicant: Korea University Research and Business Foundation
    Inventors: Hyung-Min LEE, Minil KANG, Min-Seong UM