Patents by Inventor Gang Won Lee

Gang Won 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: 20250056598
    Abstract: An apparatus and system of providing a listen before talk (LBT) procedure in multi-carrier or multi-beam mode above a 52.6 GHz band are described. The LBT procedure is performed independently for each carrier or beam to maintain and update a different back-off counter for each carrier or beam. To align a transmission starting time across the carriers or beams, for each carrier or beam: the counter continues to decrement if the counter has reached zero before the starting time and transmit at the starting time if the channel continues to be sensed idle for an additional observation period immediately prior to the starting time and otherwise considers the LBT procedure to have failed. The counter is reinitialized for carriers or beams for which a channel occupancy time (COT) is to be acquired and transmission ceases.
    Type: Application
    Filed: February 9, 2023
    Publication date: February 13, 2025
    Inventors: Salvatore Talarico, Yi Wang, Yingyang Li, Gang Xiong, Dae Won LEE
  • Patent number: 12198596
    Abstract: A display apparatus having a mura compensation function includes a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored; and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied, wherein the coefficient values are set so that the mura compensation equation has been fit to have a curve that satisfies known difference values of selected gray levels, a first estimation difference value of a first estimation gray level higher than the selected gray levels, and a second estimation difference value of a second estimation gray level lower than the selected gray levels, and wherein the compensation data comprises the coefficient values of the mura compensation equation in which all of the known difference values of the selected gray levels, the first estimation difference value, and the second estimation difference value have a differen
    Type: Grant
    Filed: October 25, 2023
    Date of Patent: January 14, 2025
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee, Jung Hyun Kim, Suk Ju Kang, Sung In Cho
  • Patent number: 12142240
    Abstract: The present disclosure discloses an apparatus and method for providing compensation information, which compress the compensation information for demura and a display driving apparatus for solving a defect in a screen by using compressed compensation information. The apparatus for providing compensation information includes a compensation value provision unit configured to provide compensation values of pixels and a compression unit configured to perform compression on the compensation values for each block of a screen.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: November 12, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee, Suk Ju Kang, Joo Sung Choi
  • Patent number: 12087202
    Abstract: A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation value.
    Type: Grant
    Filed: August 23, 2023
    Date of Patent: September 10, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ju Hyoung Lim, Ji Won Lee
  • Patent number: 11961445
    Abstract: A data processing circuit according to an embodiment may include a reception circuit configured to receive image data including grayscale values associated with pixels disposed in a display panel. The data processing circuit may include a compensation circuit configured to calculate a final compensation value by multiplying a representative compensation value of each area and a global gain, and to produce converted image data. The data processing circuit may include a memory storing a representative compensation value associated with a grayscale value of each area of the display panel, and may include a transmission circuit configured to transmit the converted image data to a data driving circuit.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: April 16, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Do Yeon Kim, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee
  • Publication number: 20240071278
    Abstract: A display apparatus having a mura compensation function includes a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored; and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied, wherein the coefficient values are set so that the mura compensation equation has been fit to have a curve that satisfies known difference values of selected gray levels, a first estimation difference value of a first estimation gray level higher than the selected gray levels, and a second estimation difference value of a second estimation gray level lower than the selected gray levels, and wherein the compensation data comprises the coefficient values of the mura compensation equation in which all of the known difference values of the selected gray levels, the first estimation difference value, and the second estimation difference value have a differen
    Type: Application
    Filed: October 25, 2023
    Publication date: February 29, 2024
    Applicant: LX SEMICON CO., LTD.
    Inventors: Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ji Won LEE, Jung Hyun KIM, Suk Ju KANG, Sung In CHO
  • Publication number: 20230395011
    Abstract: A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation value.
    Type: Application
    Filed: August 23, 2023
    Publication date: December 7, 2023
    Applicant: LX Semicon Co., Ltd.
    Inventors: Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ju Hyoung LIM, Ji Won LEE
  • Patent number: 11837141
    Abstract: The present disclosure discloses a display driving apparatus having a mura compensation function and a method of compensating for mura of the same. To this end, the display driving apparatus may include a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored, and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied.
    Type: Grant
    Filed: October 12, 2022
    Date of Patent: December 5, 2023
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee, Jung Hyun Kim, Suk Ju Kang, Sung In Cho
  • Patent number: 11776451
    Abstract: A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation value.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: October 3, 2023
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ju Hyoung Lim, Ji Won Lee
  • Patent number: 11663951
    Abstract: Provided is a technology for resolving a mura phenomenon in a display panel to which gamma is applied, in which demura compensation values are generated in a log domain to improve a problem of nonlinearity due to gamma.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: May 30, 2023
    Assignee: LX SEMICON CO., LTD.
    Inventors: Jun Young Park, Do Yeon Kim, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee
  • Publication number: 20230118591
    Abstract: The present disclosure discloses a display driving apparatus having a mura compensation function and a method of compensating for mura of the same. To this end, the display driving apparatus may include a mura memory in which compensation data corresponding to coefficient values of a mura compensation equation is stored, and a mura compensation circuit configured to perform mura compensations on display data by using the mura compensation equation to which the compensation data has been applied.
    Type: Application
    Filed: October 12, 2022
    Publication date: April 20, 2023
    Applicant: LX Semicon Co., Ltd.
    Inventors: Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ji Won LEE, Jung Hyun KIM, Suk Ju KANG, Sung In CHO
  • Publication number: 20230073179
    Abstract: The present disclosure discloses an apparatus and method for providing compensation information, which compress the compensation information for demura and a display driving apparatus for solving a defect in a screen by using compressed compensation information. The apparatus for providing compensation information includes a compensation value provision unit configured to provide compensation values of pixels and a compression unit configured to perform compression on the compensation values for each block of a screen.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 9, 2023
    Applicant: LX Semicon Co., Ltd.
    Inventors: Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ji Won LEE, Suk Ju KANG, Joo Sung CHOI
  • Publication number: 20220415240
    Abstract: A voltage drop compensation system and a display driving device for compensating for a voltage drop of a display panel. The voltage drop compensation system generates a voltage drop compensation value for each of a plurality of regions into which a test image of a panel is divided, and the display driving device compensates for a voltage drop for each region of image data using the voltage drop compensation value.
    Type: Application
    Filed: June 28, 2022
    Publication date: December 29, 2022
    Applicant: LX Semicon Co., Ltd.
    Inventors: Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ju Hyoung LIM, Ji Won LEE
  • Patent number: 11398176
    Abstract: A Mura compensation data generation apparatus for compensating for Mura, and a Mura compensation apparatus of a display using Mura compensation data. The Mura compensation data generation apparatus includes an image representative value generation circuit configured to generate a representative value representing an entire gray of an image; a difference value extraction circuit configured to extract difference values between the representative value and gray values for a plurality of preset positions on the image; a distribution range determination circuit configured to determine a distribution range of the difference values by checking a maximum value and a minimum value of the difference values; and a Mura compensation data generation circuit configured to generate Mura compensation data having a preset number of bits corresponding to the difference values.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: July 26, 2022
    Assignee: LX Semicon Co., Ltd.
    Inventors: Do Yeon Kim, Jun Young Park, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee
  • Publication number: 20220180788
    Abstract: A Mura compensation data generation apparatus for compensating for Mura, and a Mura compensation apparatus of a display using Mura compensation data. The Mura compensation data generation apparatus includes an image representative value generation circuit configured to generate a representative value representing an entire gray of an image; a difference value extraction circuit configured to extract difference values between the representative value and gray values for a plurality of preset positions on the image; a distribution range determination circuit configured to determine a distribution range of the difference values by checking a maximum value and a minimum value of the difference values; and a Mura compensation data generation circuit configured to generate Mura compensation data having a preset number of bits corresponding to the difference values.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 9, 2022
    Applicant: LX Semicon Co., Ltd.
    Inventors: Do Yeon KIM, Jun Young PARK, Min Ji LEE, Gang Won LEE, Young Kyun KIM, Ji Won LEE
  • Publication number: 20220172664
    Abstract: A data processing circuit according to an embodiment may include a reception circuit configured to receive image data including grayscale values associated with pixels disposed in a display panel. The data processing circuit may include a compensation circuit configured to calculate a final compensation value by multiplying a representative compensation value of each area and a global gain, and to produce converted image data. The data processing circuit may include a memory storing a representative compensation value associated with a grayscale value of each area of the display panel, and may include a transmission circuit configured to transmit the converted image data to a data driving circuit.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 2, 2022
    Inventors: Jun Young Park, Do Yeon Kim, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee
  • Publication number: 20220165201
    Abstract: Provided is a technology for resolving a mura phenomenon in a display panel to which gamma is applied, in which demura compensation values are generated in a log domain to improve a problem of nonlinearity due to gamma
    Type: Application
    Filed: November 19, 2021
    Publication date: May 26, 2022
    Inventors: Jun Young Park, Do Yeon Kim, Min Ji Lee, Gang Won Lee, Young Kyun Kim, Ji Won Lee