Patents by Inventor Seung-Chul Choi

Seung-Chul 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).

  • Patent number: 11949881
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 2, 2024
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
  • Publication number: 20240107032
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Application
    Filed: December 7, 2023
    Publication date: March 28, 2024
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul CHOI, Se Yoon JEONG, Sung-Chang LIM, Jin Soo CHOI, Jin Woo HONG, Dong Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Gwang Hoon PARK, Seung Ryong KOOK, Sea-Nae PARK, Kwang-Su JEONG
  • Patent number: 11938232
    Abstract: The present invention relates to an X-ray irradiator for single blood bags, comprising: an X-ray irradiator main body provided with a chamber configured to safely hold a single blood bag therein and an X-ray tube configured to irradiate the chamber with X-rays; a loading part configured to load the blood bag; and a transfer part configured to transfer the blood bag between the loading part and the chamber to which X-rays are to be emitted. The X-ray irradiator for single blood bags according to the present invention can treat a single blood bag with X-rays, such that treatment optimized for a small amount of a blood bag can be performed, and a system configuration can be simplified by using an X-ray tube.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 26, 2024
    Assignee: KOREA INSTITUTE OF RADIOLOGICAL & MEDICAL SCIENCES
    Inventors: Seung Woo Park, Mun Sik Choi, Su Chul Han, Jong Hyun Back
  • Publication number: 20240085101
    Abstract: A refrigerant cycle pressure control system includes: a heat exchanger cooling boil-off gas received from a storage tank; a refrigerant cycle including a refrigerant circulation line, a refrigerant compressor, and an expander; an inventory tank storing the refrigerant to be charged to the refrigerant cycle; a refrigerant supply line connecting the inventory tank to an upstream side of the refrigerant compressor to replenish the refrigerant cycle with the refrigerant; a refrigerant discharge line connecting a downstream side of the refrigerant compressor to the inventory tank to discharge the refrigerant from the refrigerant cycle to the inventory tank; and a pressure regulation line branched off of the refrigerant discharge line. The refrigerant cycle is depressurized by discharging the refrigerant from the refrigerant cycle through the refrigerant discharge line or the pressure regulation line.
    Type: Application
    Filed: December 24, 2021
    Publication date: March 14, 2024
    Inventors: Hye Min Jung, Seon Jin Kim, Won Jae Choi, Seung Chul Lee
  • Patent number: 11917148
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: February 27, 2024
    Assignees: Electronics And Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation Foundation
    Inventors: Jin-Ho Lee, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Dong-San Jun, Ha-Hyun Lee, Seung-Hyun Cho, Hui-Yong Kim, Hae-Chul Choi, Dae-Hyeok Gwon, Jae-Gon Kim, A-Ram Back
  • Publication number: 20240003966
    Abstract: Disclosed herein is a burn-in system with a plurality of plugs on test boards, including: a main body (100) which has a test chamber (200) with an open front side; a plurality of test boards (40) on which a plurality of semiconductor chips (90) are mounted and which is mounted in the test chamber (200); a main board which tests the semiconductor chips by exchanging signals with the plurality of semiconductor chips; a door (540) which is provided on the main body (100) to open and close the test chamber (200); and a temperature control means provided inside the main body (100) to heat and cool the test boards (40) mounted inside the test chamber (200).
    Type: Application
    Filed: May 30, 2023
    Publication date: January 4, 2024
    Applicant: Meritech CO., Ltd.
    Inventors: BYUNG GOOK CHANG, JONG JIN PARK, SEUNG CHUL CHOI, seung nam Kang
  • Patent number: 11825013
    Abstract: An apparatus and method are provided. The method includes reproducing, by a portable phone, multimedia content via an external output device while the portable phone is coupled with the external output device, determining whether the portable phone is decoupled from the external output device, and terminating the reproducing of the multimedia content based at least in part on a determination that the portable phone is decoupled from the external output device.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: November 21, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Sub Lee, Kyoung-Ae Lim, Kyoung-Shin Lee, Seung-Chul Choi
  • Patent number: 11733756
    Abstract: An electronic device is provided. The electronic device includes a battery, a power management integrated circuit (PMIC), that is electrically connected to the battery, adjusts at least part of power received from the battery, and outputs a controlled power, a processor electrically connected to the PMIC, at least one power sensor that is one of electrically connected between the battery and the PMIC and constitutes a part of the PMIC, and a control circuit electrically connected to the at least one power sensor. The control circuit acquires at least one of a current value and a power value input into the PMIC from the battery, determines whether at least one of the acquired current value and power value is greater than or equal to a threshold, and generates a first signal for controlling at least one of the PMIC and the processor, at least partially based on the determination.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 22, 2023
    Inventors: Yun-Hui Han, Min-Su Kim, Chul-Woo Park, Seung-Chul Choi
  • Patent number: 11658507
    Abstract: A battery charging method and an electronic device are disclosed. The electronic device can comprise: a connection unit comprising a first terminal to which a voltage is applied by an external device, and a second terminal for transmitting/receiving data; a first charging unit for charging a battery connected to the electronic device by using the voltage applied to the first terminal; and a second charging unit for charging the battery by dropping the voltage applied to the first terminal according to a preset voltage drop rate.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: May 23, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Geun Yoon, Kang-Jun Ko, Chul-Woo Park, Ku-Chul Jung, Seung-Chul Choi
  • Patent number: 11320889
    Abstract: Disclosed is an electronic apparatus comprising a memory which is electrically connected to a processor and in which at least one command associated with the execution of the processor is stored, wherein the command is configured such that information on the frequency of the woken-up state of a display for a designated period of time is collected upon execution of the processor and that the information on the frequency of the woken-up state is compared with designated conditions, and a sensitivity associated with the detection of the arrangement status of the electronic apparatus is adjusted or maintained according to whether the conditions are satisfied or not. Other various embodiments as understood from the specification are possible.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: May 3, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Chul Choi, Bong Su Chun
  • Patent number: 11317256
    Abstract: A method of, and a mobile terminal configured for, efficiently displaying an event indication in the form of a pop-up box during idle mode of a mobile terminal is provided. Upon occurrence of a second event in idle mode, it is determined whether an event pop-up box indicating an occurrence of a first event of the same type as the second event exists. When the event pop-up box indicating the occurrence of the first event exists, the event pop-up box is updated with information indicating the occurrence of the second event and displayed on a display.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: April 26, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-A Baek, Kyung-Ae Lim, Seung-Chul Choi, Jae-Won Chang
  • Patent number: 11310356
    Abstract: Disclosed is a method of and apparatus for displaying call information in a mobile communication terminal and a mobile communication terminal adapted to display call information. The method includes the steps of checking the call information when a call occurs, updating and storing the call information according to a status of the call, and displaying the updated call information.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: April 19, 2022
    Inventors: Hee-Jeong Cho, Kyoung-Ae Lim, Seung-Chul Choi
  • Publication number: 20220021761
    Abstract: An apparatus and method are provided. The method includes reproducing, by a portable phone, multimedia content via an external output device while the portable phone is coupled with the external output device, determining whether the portable phone is decoupled from the external output device, and terminating the reproducing of the multimedia content based at least in part on a determination that the portable phone is decoupled from the external output device.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Inventors: Jong-Sub LEE, Kyoung-Ae LIM, Kyoung-Shin LEE, Seung-Chul CHOI
  • Patent number: 11153429
    Abstract: An apparatus and method are provided. The method includes reproducing, by a portable phone, multimedia content via an external output device while the portable phone is coupled with the external output device, determining whether the portable phone is decoupled from the external output device, and terminating the reproducing of the multimedia content based at least in part on a determination that the portable phone is decoupled from the external output device.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: October 19, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Sub Lee, Kyoung-Ae Lim, Kyoung-Shin Lee, Seung-Chul Choi
  • Publication number: 20200280823
    Abstract: A method of, and a mobile terminal configured for, efficiently displaying an event indication in the form of a pop-up box during idle mode of a mobile terminal is provided. Upon occurrence of a second event in idle mode, it is determined whether an event pop-up box indicating an occurrence of a first event of the same type as the second event exists. When the event pop-up box indicating the occurrence of the first event exists, the event pop-up box is updated with information indicating the occurrence of the second event and displayed on a display.
    Type: Application
    Filed: May 18, 2020
    Publication date: September 3, 2020
    Inventors: Su-A BAEK, Kyung-Ae LIM, Seung-Chul CHOI, Jae-Won CHANG
  • Patent number: 10681508
    Abstract: A method of, and a mobile terminal configured for, efficiently displaying an event indication in the form of a pop-up box during idle mode of a mobile terminal is provided. Upon occurrence of a second event in idle mode, it is determined whether an event pop-up box indicating an occurrence of a first event of the same type as the second event exists. When the event pop-up box indicating the occurrence of the first event exists, the event pop-up box is updated with information indicating the occurrence of the second event and displayed on a display.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: June 9, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-A Baek, Kyung-Ae Lim, Seung-Chul Choi, Jae-Won Chang
  • Publication number: 20200159306
    Abstract: An electronic device is provided. The electronic device includes a battery, a power management integrated circuit (PMIC), that is electrically connected to the battery, adjusts at least part of power received from the battery, and outputs a controlled power, a processor electrically connected to the PMIC, at least one power sensor that is one of electrically connected between the battery and the PMIC and constitutes a part of the PMIC, and a control circuit electrically connected to the at least one power sensor. The control circuit acquires at least one of a current value and a power value input into the PMIC from the battery, determines whether at least one of the acquired current value and power value is greater than or equal to a threshold, and generates a first signal for controlling at least one of the PMIC and the processor, at least partially based on the determination.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Inventors: Yun-Hui HAN, Min-Su KIM, Chul-Woo PARK, Seung-Chul CHOI
  • Publication number: 20200044458
    Abstract: A battery charging method and an electronic device are disclosed. The electronic device can comprise: a connection unit comprising a first terminal to which a voltage is applied by an external device, and a second terminal for transmitting/receiving data; a first charging unit for charging a battery connected to the electronic device by using the voltage applied to the first terminal; and a second charging unit for charging the battery by dropping the voltage applied to the first terminal according to a preset voltage drop rate.
    Type: Application
    Filed: September 27, 2017
    Publication date: February 6, 2020
    Inventors: Sung-Geun YOON, Kang-Jun KO, Chul-Woo PARK, Ku-Chul JUNG, Seung-Chul CHOI
  • Patent number: 10545555
    Abstract: An electronic device is provided. The electronic device includes a battery, a power management integrated circuit (PMIC), that is electrically connected to the battery, adjusts at least part of power received from the battery, and outputs a controlled power, a processor electrically connected to the PMIC, at least one power sensor that is one of electrically connected between the battery and the PMIC and constitutes a part of the PMIC, and a control circuit electrically connected to the at least one power sensor. The control circuit acquires at least one of a current value and a power value input into the PMIC from the battery, determines whether at least one of the acquired current value and power value is greater than or equal to a threshold, and generates a first signal for controlling at least one of the PMIC and the processor, at least partially based on the determination.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 28, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yun-Hui Han, Min-Su Kim, Chul-Woo Park, Seung-Chul Choi
  • Publication number: 20180292882
    Abstract: Disclosed is an electronic apparatus comprising a memory which is electrically connected to a processor and in which at least one command associated with the execution of the processor is stored, wherein the command is configured such that information on the frequency of the woken-up state of a display for a designated period of time is collected upon execution of the processor and that the information on the frequency of the woken-up state is compared with designated conditions, and a sensitivity associated with the detection of the arrangement status of the electronic apparatus is adjusted or maintained according to whether the conditions are satisfied or not. Other various embodiments as understood from the specification are possible.
    Type: Application
    Filed: November 1, 2016
    Publication date: October 11, 2018
    Inventors: Seung Chul CHOI, Bong Su CHUN