Patents by Inventor Woong Choi

Woong 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).

  • COOKING APPARATUS AND METHOD OF CONTROLLING THE SAME
    Publication number: 20200374988
    Abstract: The present disclosure relates to a cooking apparatus and a method of controlling the same, and more particularly, to a technology for reducing stress caused by a current flowing through a diode included in the cooking apparatus.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 26, 2020
    Inventors: Nam Ju PARK, Ji Woong CHOI, Hyun Kwan LEE
  • Method for compressing and restoring time series data
    Patent number: 10819368
    Abstract: A method for compressing time series data includes: reading original data including time series data; measuring a unit of the original data; determining a threshold for determining a range allowing for a difference between compressed data and the original data; performing longest distance downsampling to preserve an abnormal point of the original data; storing a start point and an end point of the original data; performing drop-out on the longest distance downsampling result, wherein the drop-out is not performed for the start point and the end point; and if the number of values of the original data is smaller than ? times the original data length, storing at least one of the values of the original data as a reference point, wherein ? is a real number having a value between 0 and 1.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: October 27, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Myung Geun Song, Myung Joo Kang, Byeong Eon Lee, Myoung Su Cho, Young Jin Koh, Geon Woo Kim, Sang Yeon Kim, Hyun Seo, Dong Jun Woo, Jae Woong Choi
  • Cooking apparatus and method of controlling the same
    Patent number: 10813177
    Abstract: A cooking apparatus includes a coil configured to generate a magnetic field, a driver including a first switch and a second switch and configured to change a direction of the current, a current detector configured to detect the current of the coil, a controller configured to increase a duty cycle of the first switch during a reference time when an operation start signal is transmitted thereto, control operations of the first switch and the second switch on the basis of an operating frequency when the reference time elapses, check zero cross points of currents detected while the first switch and the second switch are operated, compare a time point of the checked zero cross point to a starting time point of an turn-on operation of the first switch to determine a material of the vessel, and block the applied current when the vessel is determined to be a non-heatable vessel.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 20, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Ju Park, Ji Woong Choi, Sang Hyun Kang, Se Bin Im
  • Method for SRAM yield estimation
    Patent number: 10811117
    Abstract: A method for SRAM yield estimation includes: generating a first perturbation vector depending on a DC voltage input condition for an assist operation section of a SRAM which is an estimation target; calculating a first margin on the basis of the first perturbation vector; performing an AC simulation during the assist operation section depending on the DC voltage input condition; generating a second perturbation vector depending on a DC voltage input condition for a normal operation section which is set when the AC simulation is ended; calculating a second margin on the basis of the second perturbation vector; and selecting a minimum margin from among the first margin and the second margin and estimating a yield of the SRAM on the basis of the selected margin.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: October 20, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: Jongsun Park, Woong Choi
  • METHOD, APPARATUS, AND RECORDING MEDIUM FOR PROCESSING IMAGE
    Publication number: 20200294304
    Abstract: A method of processing an image by a device obtaining one or more images including captured images of objects in a target space, generating metadata including information about mapping between the one or more images and a three-dimensional (3D) mesh model used to generate a virtual reality (VR) image of the target space, and transmitting the one or more images and the metadata to a terminal.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-yun JEONG, Do-wan KIM, Yong-gyoo KIM, Gun-hee LEE, Jae-kyeong LEE, Jin-bong LEE, Dai-woong CHOI, Hyun-soo CHOI
  • QUANTUM SIGNATURE METHOD AND QUANTUM SECRET SHARING METHOD USING QUANTUM TRAPDOOR ONE-WAY FUNCTION
    Publication number: 20200287714
    Abstract: This specification discloses a quantum public-key cryptosystem. The quantum public-key cryptosystem may use two rotation operators R{circumflex over (n)}(?) and R{circumflex over (m)}(?) satisfying a cyclic evolution. The two rotation operators R{circumflex over (n)}(?) and R{circumflex over (m)}(?) do not have a commutation relation or an anti-commutation relation with each other. The commutation relation or the anti-commutation relation is established when either of the following conditions is satisfied: ?=2i?, ?=2j?, or {circumflex over (n)}·{circumflex over (m)}=1 (i, j=integer), and ?=(2k+1)?, ?=(2l+1)?, or {circumflex over (n)}·{circumflex over (m)}=0 (k, l=integer).
    Type: Application
    Filed: January 10, 2020
    Publication date: September 10, 2020
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Wook HAN, Sung Wook MOON, Yong Su KIM, Sang Yun LEE, Young Wook CHO, Min Sung KANG, Ji Woong CHOI
  • GANODERMA LUCIDUM EXTRACT-PREPARING METHOD USING ECO-FRIENDLY EXTRACTION TECHNIQUE, GANODERMA LUCIDUM EXTRACT PREPARED THEREBY, AND ANTI-AGING COSMETIC COMPOSITION COMPRISING SAME EXTRACT
    Publication number: 20200253859
    Abstract: A method for preparing Ganoderma lucidum extract using an eco-friendly extraction technique is disclosed. A Ganoderma lucidum extract prepared thereby and a cosmetic composition containing the extract, and their uses are disclosed. The extraction technique use an aqueous cyclodextrin solution alone or in combination with ultrasonic extraction to afford a Ganoderma lucidum extract containing a high concentration of the effective ingredient triterpenoid.
    Type: Application
    Filed: September 20, 2018
    Publication date: August 13, 2020
    Applicant: AMOREPACIFIC CORPORATION
    Inventors: Jin Sup SHIM, Eun Jung LEE, Nok Hyun PARK, So Woong CHOI, Yong Jin KIM
  • CIRCADIAN RHYTHM MANAGEMENT APPARATUS AND SYSTEM
    Publication number: 20200230346
    Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.
    Type: Application
    Filed: July 29, 2019
    Publication date: July 23, 2020
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Hyun Sun Mo, Young Rag Do, Dae Jeong Kim, Dae Hwan Kim, Sung Yeon Jang, In Hwan Jung, Dong Myung Kim, Seong Jin Choi, Sanggyu Yim, Hyung Min Kim, Sun Woong Choi, Gu Min Jeong, Seung Min Lee
  • METHOD AND DEVICE FOR SECURING NETWORK
    Publication number: 20200228564
    Abstract: A method, performed by an observer node, of securing a network, includes: receiving a signal over the network; determining, based on a frequency characteristic of the received signal, which is determined according to a physical characteristic of a node, which transmits the received signal, a node, which has transmitted the received signal among a plurality of nodes included in the network; comparing a pre-learned signal pattern of the determined transmission node with a pattern of the received signal to determine whether the determined transmission node is a malicious node; and blocking the signal transmitted from the malicious node by determining that the transmission node is a malicious node.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Applicant: Daegu Gyeongbuk Institute of Science and Technology
    Inventors: Ji Woong Choi, Eun Min Choi, Sung Min Han
  • METHOD FOR COMPRESSING AND RESTORING TIME SERIES DATA
    Publication number: 20200220555
    Abstract: A method for compressing time series data includes: reading original data including time series data; measuring a unit of the original data; determining a threshold for determining a range allowing for a difference between compressed data and the original data; performing longest distance downsampling to preserve an abnormal point of the original data; storing a start point and an end point of the original data; performing drop-out on the longest distance downsampling result, wherein the drop-out is not performed for the start point and the end point; and if the number of values of the original data is smaller than a times the original data length, storing at least one of the values of the original data as a reference point, wherein ? is a real number having a value between 0 and 1.
    Type: Application
    Filed: August 22, 2019
    Publication date: July 9, 2020
    Inventors: Myung Geun Song, Myung Joo Kang, Byeong Eon Lee, Myoung Su Cho, Young Jin Koh, Geon Woo Kim, Sang Yeon Kim, Hyun Seo, Dong Jun Woo, Jae Woong Choi
  • Memory systems and power management apparatuses including secondary power devices, and related methods of operation
    Patent number: 10705155
    Abstract: Power management apparatuses are provided. A power management apparatus includes a secondary power device that includes at least one capacitor. The power management apparatus includes a charging circuit that includes a direct current (DC)-DC converter and that is configured to supply power to the secondary power device. Moreover, the power management apparatus includes a measuring circuit that is configured to measure a switching profile of the DC-DC converter, and to determine a state of the secondary power device by comparing at least one time period of the switching profile with a reference time. Related memory systems and methods of operation are also provided.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: July 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-yong An, Byung-ok Kang, Woo-sung Lee, Jae-woong Choi, Young-sang Cho
  • DEVICE, SYSTEM AND METHOD FOR TACTILE SENSATION RECOGNITION
    Publication number: 20200209972
    Abstract: Provided is a tactile sensation recognition device according to an embodiment of the disclosure including: a receiver configured to receive tactile sensation information obtained by sensing a surface of an object through a tactile sensor; a preference determiner configured to determine whether a user prefers the received tactile sensation information, based on a user tactile function fuser(x); and a display displaying a user preference for the received tactile sensation information.
    Type: Application
    Filed: December 17, 2019
    Publication date: July 2, 2020
    Applicant: Daegu Gyeongbuk Institute of Science and Technology
    Inventors: Jae Eun JANG, Che ll Moon, Ji Woong Choi, Hong Soo Choi, Kyung Soo Kim, Dong Su Kim, Kwon Sik Shin, Min Kyung Sim, Do Young Lee, Sung Ho Lim
  • Method and device for sensing pain
    Patent number: 10684180
    Abstract: A pain sensing device includes a sensor array including a plurality of sensors that sense pressure generated due to a contact of an object and output electrical piezoelectric signals; and a signal processor configured to recognize the shape of the object based on the number of sensors that output the piezoelectric signals among the plurality of sensors, and to generate a pain signal according to the recognized shape of the object.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: June 16, 2020
    Assignee: Daegu Gyeongbuk Institute of Science and Technology
    Inventors: Jae Eun Jang, Kyung Hwa Lee, Minkyung Sim, Cheil Moon, Ji-Woong Choi, Hongsoo Choi
  • DATA DRIVER PERFORMING CLOCK TRAINING, DISPLAY DEVICE INCLUDING THE DATA DRIVER, AND METHOD OF OPERATING THE DISPLAY DEVICE
    Publication number: 20200184877
    Abstract: A display device includes a controller to generate a start frame control signal having a first level in an active period and a second level in a blank period, a load signal toggling between the first level and the second level in the active period and having the second level in the blank period, and a data signal including image data in the active period and a training pattern in the blank period, and a data driver to recover the image data from the data signal based on an internal clock signal to provide display pixels with data voltages in the active period, and to perform a training operation for the internal clock signal using the training pattern in the data signal when both of the start frame control signal and the load signal are maintained as the second level for more than a reference time in the blank period.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 11, 2020
    Inventors: Kihyun PYUN, Yunmi KIM, Ji Woong CHOI
  • ACCELERATED OUTDOOR EXPOSURE TEST EQUIPMENT
    Publication number: 20200182775
    Abstract: Accelerated outdoor exposure test equipment is disclosed. In the accelerated outdoor exposure test equipment, a specimen is moved for an accelerated outdoor test or an artificial radiation source to irradiate artificial light is moved at sunrise or sunset. Accordingly, the specimen is exposed to natural light such as sunlight during daytime and exposed to artificial light during nighttime.
    Type: Application
    Filed: December 30, 2019
    Publication date: June 11, 2020
    Inventors: Chang Hwan Kim, Sun Woong Choi, Hyy Young Han
  • Method, apparatus, and recording medium for processing image
    Patent number: 10672180
    Abstract: A method of processing an image by a device obtaining one or more images including captured images of objects in a target space, generating metadata including information about mapping between the one or more images and a three-dimensional (3D) mesh model used to generate a virtual reality (VR) image of the target space, and transmitting the one or more images and the metadata to a terminal.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: June 2, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-yun Jeong, Do-wan Kim, Yong-gyoo Kim, Gun-hee Lee, Jae-kyeong Lee, Jin-bong Lee, Dai-woong Choi, Hyun-soo Choi
  • Gas range burner grate
    Patent number: D886523
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: June 9, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-Woong Choi, Gi-Sung Han, Hyun-Soo Kim, Bo-Kyeong Lee
  • Gas range burner grate
    Patent number: D886524
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: June 9, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-Woong Choi, Gi-Sung Han, Hyun-Soo Kim, Bo-Kyeong Lee
  • Gas range
    Patent number: D889185
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: July 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Soo Kim, Hwan-Woong Choi, Gi-Sung Han
  • Gas oven range
    Patent number: D893237
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 18, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwan-Woong Choi, Gisung Han