Patents by Inventor Hyun-sik Yoon

Hyun-sik Yoon 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: 11924988
    Abstract: A display apparatus including a display and a supporter. The supporter being mounted on the display and configured to support the display and rotate the display module between a first position and a second position. The supporter including a drive motor, a first gear, and a detection sensor. The drive motor configured to supply a driving force to rotate the display. The first gear configured to rotate together with the display by receiving the driving force from the drive motor. The detection sensor configured to detect a rotation amount of a second gear configured to rotate in with the first gear.
    Type: Grant
    Filed: December 23, 2022
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Yong Choi, Young Chul Kim, Ji Su Kim, Hun Sung Kim, Sung Yong Park, Jin Soo Shin, Dae Sik Yoon, Yong Yeon Hwang
  • Patent number: 11881160
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: January 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Yoon, Jong Woon Kim, Won Jin Seo, Ki Hyun Sung, Ye Seul Lee, Dae Ho Hwang
  • Publication number: 20240021158
    Abstract: A display device includes a display panel including a pixel, a temperature sensor which senses a temperature of the display panel and outputs the temperature of the display panel as a sensing temperature, a first compensation part which receives a gate-source voltage sensed in the pixel as a sensing voltage and compensates for the sensing voltage by a change amount of the gate-source voltage corresponding to a difference value between a reference temperature and the sensing temperature, and a second compensation part which compensates for data to be applied to the pixel by comparing a compensated sensing voltage with an initial gate-source voltage.
    Type: Application
    Filed: May 17, 2023
    Publication date: January 18, 2024
    Inventors: SEONGHWAN CHOI, HYUN-SIK YOON, MOONJU KIM, JIYOUNG EOM, YONG-JU JEONG
  • Publication number: 20240021143
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Application
    Filed: February 8, 2023
    Publication date: January 18, 2024
    Inventors: Hyun Sik YOON, Jong Woon KIM, Won Jin SEO, Ki Hyun SUNG, Ye Seul LEE, Dae Ho HWANG
  • Publication number: 20230419871
    Abstract: A display device is disclosed that includes a display panel including a plurality of pixels, a printed circuit board connected to the display panel, a temperature sensor disposed on the printed circuit board, a flexible circuit board that connects the display panel to the printed circuit board, a data driver disposed on the flexible circuit board, and a temperature sensing part disposed on the printed circuit board. The flexible circuit board is bent such that the printed circuit board is disposed under the display panel and the temperature sensor is disposed adjacent to a sensing pixel outputting a sensing current among the pixels.
    Type: Application
    Filed: April 11, 2023
    Publication date: December 28, 2023
    Inventors: HYUN-SIK YOON, JONGWOON KIM, WONJIN SEO, KIHYUN SUNG, KIHONG SONG, YESEUL LEE, DAEHO HWANG
  • Publication number: 20230401998
    Abstract: A display device includes a display panel including a plurality of pixels, and an image sticking compensator for generating age data with respect to the plurality of pixels by accumulating average degradation data that is an average of degradation data with respect to a plurality of successive frame periods, by accumulating the degradation data with respect to a representative frame period among the plurality of successive frame periods, or by accumulating degradation data generated by accumulating degradation differential data with respect to two successive frame periods, and generating output image data by compensating input image data using the age data.
    Type: Application
    Filed: April 4, 2023
    Publication date: December 14, 2023
    Inventors: JONGWOON KIM, HYUN-SIK YOON, KIHYUN SUNG, KIHONG SONG
  • Publication number: 20230402016
    Abstract: A display device includes a driving control circuit that receives an input image signal and outputs an output image signal, a data driving circuit that outputs a data signal corresponding to the output image signal, and a display panel including a plurality of pixels to display an image corresponding to the data signal. The driving control circuit determines an amount of time the input image signal is maintained as a still image, determines a color coordinate gain based on the amount of time and outputs the output image signal based on the color coordinate gain.
    Type: Application
    Filed: April 11, 2023
    Publication date: December 14, 2023
    Inventors: KIHYUN SUNG, JONGWOON KIM, KIHONG SONG, HYUN-SIK YOON, YESEUL LEE
  • Publication number: 20230343284
    Abstract: A display device includes a display panel, a temperature sensor that detects an ambient temperature and outputs a first temperature signal corresponding to the detected ambient temperature, a memory that receives a memory power supply voltage and stores a compensation signal, a driving controller that receives the first temperature signal from the temperature sensor and an input image signal, and provides the display panel with an output image signal which is obtained by compensating for the input image signal based on the compensation signal from the memory, and a voltage generator that generates the memory power supply voltage in response to a voltage control signal from the driving controller. The driving controller outputs the voltage control signal such that the memory power supply voltage has a voltage level corresponding to the first temperature signal.
    Type: Application
    Filed: January 17, 2023
    Publication date: October 26, 2023
    Inventors: KIHYUN SUNG, HYUN-SIK YOON, JONGWOON KIM, KIHONG SONG
  • Publication number: 20230282168
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Application
    Filed: May 16, 2023
    Publication date: September 7, 2023
    Inventors: HYUN-SIK YOON, YONG-JU JEONG, DAEHO HWANG
  • Patent number: 11699388
    Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: July 11, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Yoon, Jong Woon Kim, Ick Kyu Jang, Dae Ho Hwang
  • Patent number: 11688349
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: June 27, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Yong-Ju Jeong, Daeho Hwang
  • Patent number: 11676523
    Abstract: A method of operating a display device includes: receiving image data at an input frame frequency; generating a modulated clock signal by modulating an input clock signal according to a modulation frequency; randomly selecting an output frame frequency within a data frequency selection range, the input frame frequency being within the data frequency selection range; determining an output start timing of the image data based on the output frame frequency; initiating, at the output start timing, output of the image data in synchronization with the modulated clock signal; and displaying an image based on the outputted image data.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: June 13, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Daeho Hwang, Jeong-Hyun Kim, Junpyo Lee, Sungsoo Choi
  • Publication number: 20230037648
    Abstract: Disclosed is a display device including a first output part, a second output part, a power supply circuit connected to input terminals of the first output part and the second output part, a first sensing part connected to an output terminal of the first output part, a second sensing part connected to an output terminal of the second output part, a first voltage output terminal connected to the first sensing part and the second sensing part, a plurality of pixels connected to the first voltage output terminal and configured to display an image, and a defect determination part controlling shutdown of the power supply circuit by comparing a first sensing value and a second sensing value, which are received from the first sensing part and the second sensing part, with a first reference value and a second reference value having a level lower than the first reference value.
    Type: Application
    Filed: May 31, 2022
    Publication date: February 9, 2023
    Inventors: HYUN-SIK YOON, YONG-JU JEONG, DAEHO HWANG
  • Publication number: 20220398974
    Abstract: A display device includes: a display panel including pixels emitting light, based on a data voltage; a current limiter for determining a scale factor by comparing a previous frame load with a predetermined threshold load, and generating compensated image data by applying the scale factor to current image data as input image data of a current frame to adjust the data voltage; and a data driver for converting the compensated image data into the data voltage and providing the data voltage to the display panel.
    Type: Application
    Filed: February 2, 2022
    Publication date: December 15, 2022
    Inventors: Hyun Sik YOON, Jong Woon KIM, Ick Kyu JANG, Dae Ho HWANG
  • Publication number: 20220020308
    Abstract: A method of operating a display device includes: receiving image data at an input frame frequency; generating a modulated clock signal by modulating an input clock signal according to a modulation frequency; randomly selecting an output frame frequency within a data frequency selection range, the input frame frequency being within the data frequency selection range; determining an output start timing of the image data based on the output frame frequency; initiating, at the output start timing, output of the image data in synchronization with the modulated clock signal; and displaying an image based on the outputted image data.
    Type: Application
    Filed: October 1, 2021
    Publication date: January 20, 2022
    Inventors: Hyun-Sik YOON, Daeho HWANG, Jeong-Hyun KIM, Junpyo LEE, Sungsoo CHOI
  • Patent number: 11151919
    Abstract: A method of operating a display device includes: receiving image data at an input frame frequency; generating a modulated clock signal by modulating an input clock signal according to a modulation frequency; randomly selecting an output frame frequency within a data frequency selection range, the input frame frequency being within the data frequency selection range; determining an output start timing of the image data based on the output frame frequency; initiating, at the output start timing, output of the image data in synchronization with the modulated clock signal; and displaying an image based on the outputted image data.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: October 19, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Sik Yoon, Daeho Hwang, Jeong-Hyun Kim, Junpyo Lee, Sungsoo Choi
  • Patent number: 10554710
    Abstract: A method and a device for switching a media renderer to another media renderer while a client performs streaming playback of content of a server are provided. Accordingly, a first client that performs streaming playback of the content transmits playback environment information and a URL of the content to the second client, and the second client transmits the received information and information about features of the second client to the server and requests the corresponding content which has the optimized format for the second client from the server. Therefore, a user can continue to watch the media content through a new media renderer in existing playback environment setting without additional manipulation.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: February 4, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon-ho Cho, Hyun-sik Yoon
  • Patent number: 10452852
    Abstract: A method for measurement of an information-security-controlling status in accordance with the present disclosure includes receiving actual inspection data obtained by actually inspecting whether each domain complies with each security-controlling item, computing security-controlling status measurement scores for each domain on the basis of a significance grade of each control item, the degree of compliance with a corresponding control item, and a weighting set by a measurement manager, computing a final security-controlling status measurement score for a parent organization to which each domain belongs on the basis of an average of the security-controlling status measurement scores for each domain, and outputting the computed security-controlling status measurement scores and final security-controlling status measurement score.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: October 22, 2019
    Assignee: Korea University Research and Business Foundation
    Inventors: Kyung Ho Lee, Young In You, Seon Ju Kim, In Hyun Cho, Hyun Sik Yoon
  • Publication number: 20190244556
    Abstract: A method of operating a display device includes: receiving image data at an input frame frequency; generating a modulated clock signal by modulating an input clock signal according to a modulation frequency; randomly selecting an output frame frequency within a data frequency selection range, the input frame frequency being within the data frequency selection range; determining an output start timing of the image data based on the output frame frequency; initiating, at the output start timing, output of the image data in synchronization with the modulated clock signal; and displaying an image based on the outputted image data.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Inventors: Hyun-Sik YOON, Daeho HWANG, Jeong-Hyun KIM, Junpyo LEE, Sungsoo CHOI
  • Patent number: 10339874
    Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a timing controller. The display panel displays an image. The gate driver outputs a gate signal to the display panel. The data driver includes a plurality of data driving chips which outputs data voltages to the display panel based on data signals. The timing controller adjusts a waveform of the data signals based on a temperature of the data driving chips.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeonuk Won, Jang-Mi Lee, Wonjin Seo, Hyun-Sik Yoon