Patents by Inventor Wook Koh

Wook Koh 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: 11990590
    Abstract: A battery management apparatus and method according to an embodiment of the present disclosure is directed to obtaining a positive electrode profile and a negative electrode profile for a battery cell in a non-destructive manner by appropriately adjusting a preset negative electrode profile. According to one aspect of the present disclosure, by using the battery profile and the adjusted negative electrode profile for the degraded battery cell, there is an advantage that the positive electrode profile of the degraded battery cell may be easily estimated in a non-destructive manner.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: May 21, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Du-Seong Yoon, Dong-Wook Koh, Jin-Hyung Lim, Gwang-Hoon Jun, Jeong-Mi Choi, Yoon-Jung Bae
  • Publication number: 20240133572
    Abstract: The present invention relates to a system for diagnosis and management of indoor air quality, and more particularly to a system for diagnosis and management of indoor air quality which is capable of obtaining and analyzing air quality data by measuring the indoor air quality of a vehicle or accommodation space and of detecting smoking or non-smoking, the type of smoking, and an abnormal situation by diagnosing at least one of indoor smoking and smoking types. In addition, the present invention relates to a technology for facilitating the management of accommodation by efficiently diagnosing indoor air quality.
    Type: Application
    Filed: November 25, 2021
    Publication date: April 25, 2024
    Applicant: AirDeep Co., Ltd.
    Inventors: Yoo Sin KIM, Eun Joo PARK, Jung Hoon SHIN, Tae Yun KIM, Kun Wook KOH
  • Patent number: 11931884
    Abstract: A smart drilling system includes a terminal configured to map a design space to an actual space and having perforation location information in the design space, a drilling machine including a drill for perforation and configured to perform perforation in the actual space under control of the terminal based on the perforation location information, and a total station configured to acquire location information of a reference point in the actual space for mapping the design space to the actual space and location information of the drilling machine in the actual space, and to transmit the location information of the reference point in the actual space and the location information of the drilling machine to the terminal, wherein the terminal recognizes and displays a perforable region or a perforable point at a current position of the drilling machine.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: March 19, 2024
    Assignees: GeoSystem Inc., Buildingpointkorea Inc.
    Inventors: Dong Hun Kang, Jong Hyun Oh, Ji Eun Kim, Chang Wook Joh, Young Hoon Koh
  • Patent number: 11927890
    Abstract: A substrate processing apparatus includes a photoresist coater applying a photoresist film on a substrate, a humidifier increasing an amount of moisture in an ambient to which the photoresist film on the substrate is exposed, and an exposer irradiating the photoresist film exposed to the ambient having the increased amount of moisture with light. The humidifier is disposed between the photoresist coater and the exposer.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 12, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok Heo, Cha Won Koh, Sang Joon Hong, Hyun Woo Kim, Kyung-Won Kang, Dong-Wook Kim, Kyung Won Seo, Young Il Jang, Yong Suk Choi
  • Publication number: 20230318057
    Abstract: A battery management apparatus includes: a measuring unit to measure voltage and capacity of a battery cell; a profile generating unit to generate a battery profile representing a correspondence between the voltage and the capacity measured by the measuring unit and generate a positive electrode profile of the battery cell based on the generated battery profile and a reference negative electrode profile and a reference negative electrode differential profile preset for the battery cell; and a control unit configured to receive the generated positive electrode profile from the profile generating unit, derive a conversion function representing conversion information from the reference positive electrode profile to the generated positive electrode profile, generate a positive electrode prediction profile for the battery cell from the reference positive electrode profile based on the derived conversion function, and generate a battery prediction profile for the battery cell based on the generated positive electro
    Type: Application
    Filed: June 23, 2021
    Publication date: October 5, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Du-Seong YOON, Dong-Wook KOH, Jin-Hyung LIM, Gwang-Hoon JUN, Jeong-Mi CHOI, Yoon-Jung BAE
  • Publication number: 20230207910
    Abstract: A battery management apparatus and method according to an embodiment of the present disclosure is directed to obtaining a positive electrode profile and a negative electrode profile for a battery cell in a non-destructive manner by appropriately adjusting a preset negative electrode profile. According to one aspect of the present disclosure, by using the battery profile and the adjusted negative electrode profile for the degraded battery cell, there is an advantage that the positive electrode profile of the degraded battery cell may be easily estimated in a non-destructive manner.
    Type: Application
    Filed: June 3, 2021
    Publication date: June 29, 2023
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Du-Seong YOON, Dong-Wook KOH, Jin-Hyung LIM, Gwang-Hoon JUN, Jeong-Mi CHOI, Yoon-Jung BAE
  • Patent number: 11688363
    Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: June 27, 2023
    Assignee: Apple Inc.
    Inventors: Maofeng Yang, Jiayi Jin, David A. Doyle, Yifan Zhang, Weijun Yao, Jiye Lee, Tae-Wook Koh, Mathew K. Mathai, Chuang Qian, Tsung-Ting Tsai, James P. Landry, Kiran S. Pillai, Injae Hwang, Yongjun Li
  • Publication number: 20220093059
    Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.
    Type: Application
    Filed: July 14, 2021
    Publication date: March 24, 2022
    Inventors: Maofeng Yang, Jiayi Jin, David A. Doyle, Yifan Zhang, Weijun Yao, Jiye Lee, Tae-Wook Koh, Mathew K. Mathai, Chuang Qian, Tsung-Ting Tsai, James P. Landry, Kiran S. Pillai, Injae Hwang, Yongjun Li
  • Patent number: 11276369
    Abstract: Systems, methods, and devices are provided to reduce a likelihood of image burn-in on an electronic display. Such an electronic device may include image processing circuitry and an electronic display. The image processing circuitry may receive image data and analyze the image data for risk of image burn-in and, based at least in part on the analysis of the image data, reduce a risk of image burn-in at least in part by reducing a local maximum pixel luminance value in at least one of a plurality of regions of the image data over time or by reducing a dynamic range headroom of the image data. The electronic display may display the image data with a reduced risk of image burn-in on the pixels of the electronic display.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 15, 2022
    Assignee: Apple Inc.
    Inventors: Tobias Jung, Marc Albrecht, Paul S. Drzaic, Tae-Wook Koh, Teun R. Baar, Yifan Zhang, Ramin Samadani, Nicolas P. Bonnier
  • Patent number: 11171313
    Abstract: Display panel stack-up structures are described. In an embodiment, a display panel includes a substrate, a light source, and a multiple layer thin film encapsulation over the light source. In an embodiment, the display panel additionally includes an anti-reflection layer over the light source. In an embodiment, an incoherence layer is located within the thin film encapsulation.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 9, 2021
    Assignee: Apple Inc.
    Inventors: Yifan Zhang, Amin Salehi, Yun Liu, Paul S. Drzaic, Tae-Wook Koh, Chih Jen Yang, Bhadrinarayana Lalgudi Visweswaran, Chieh-Wei Chen
  • Patent number: 11164540
    Abstract: An electronic device may include an electronic display and a display pipeline. The electronic display may include multiple pixels to display images based at least in part on pixel data. The display pipeline may receive image data and process the image data to determine the pixel data. The display pipeline may include burn-in compensation circuitry to apply gains to the image data based at least in part on burn-in statistics to generate the pixel data. The gain to be applied to the image data for a pixel of the electronic display is determined by the burn-in compensation circuitry, based at least in part on an emission duty cycle of the pixel, to compensate the image data for the pixel for burn-in related aging of the pixel.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: November 2, 2021
    Assignee: Apple, Inc.
    Inventors: Peter F. Holland, Mahesh B. Chappalli, Yifan Zhang, Tae-Wook Koh
  • Patent number: 11145249
    Abstract: A display may include pixels (such as light-emitting diode pixels) that are susceptible aging effects (burn-in). To help avoid visible artifacts caused by burn-in during operation of the display, compensation circuitry may be used to compensate image data for the display. An optical sensor may be included behind the pixels to directly measure pixel brightness levels. The optical sensor may provide optical sensor data from testing operations to the compensation circuitry. The optical sensor may gather data during burn-in testing operations. During the burn-in testing operations, pixel groups including both high-usage pixels and low-usage pixels may sequentially emit light while the optical sensor gathers data. Brightness differences between the high-usage pixels and low-usage pixels may be used to characterize pixel aging in the display and compensate image data to mitigate visible artifacts caused by burn-in. The optical sensor may also gather data during global brightness testing operations.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: October 12, 2021
    Inventors: Wanglei Han, Akshay Bhat, Michael H. Lim, Kyung Hoae Koo, Jiayi Jin, David A. Doyle, Tae-Wook Koh, Jared S. Price, Yifan Zhang, Mahdi Nezamabadi
  • Publication number: 20210183333
    Abstract: An electronic device may include an electronic display and a display pipeline. The electronic display may include multiple pixels to display images based at least in part on pixel data. The display pipeline may receive image data and process the image data to determine the pixel data. The display pipeline may include burn-in compensation circuitry to apply gains to the image data based at least in part on burn-in statistics to generate the pixel data. The gain to be applied to the image data for a pixel of the electronic display is determined by the burn-in compensation circuitry, based at least in part on an emission duty cycle of the pixel, to compensate the image data for the pixel for burn-in related aging of the pixel.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 17, 2021
    Inventors: Peter F. Holland, Mahesh B. Chappalli, Yifan Zhang, Tae-Wook Koh
  • Patent number: 10991283
    Abstract: A flat-panel display device and method to prevent display panel burn-in through a decimated look-up table with pixel shifting in a display or an augmented reality display.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: April 27, 2021
    Assignee: Apple Inc.
    Inventors: Sheng Zhang, Chaohao Wang, Michael Slootsky, Yifan Zhang, Tae-Wook Koh
  • Patent number: 10983482
    Abstract: An electronic device such as a wristwatch device or other device may have a display. The display may be used to continuously display information such as watch face information. A watch face image on the display may contain watch face elements such as watch face hands, watch face indices, and complications. To reduce burn-in risk for watch face elements, control circuitry in the electronic device may impose burn-in constraints on attributes of the watch face elements such as peak luminance constraints, dwell time constraints, color constraints, constraints on the shape of each element, and constraints on element style. These constraints may help avoid situations in which static elements such as watch face indices create more burn-in than dynamic elements such as watch face hands.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Tae-Wook Koh, Yiqiang Nie, Yifan Zhang, Giovanni M. Agnoli, Paul S. Drzaic, David A. Doyle
  • Publication number: 20200359842
    Abstract: Disclosed herein are a smart blender and an information provision system using the same. The smart blender includes: a body part configured such that a drive motor is provided therein; a container part configured such that food ingredients are introduced thereinto; a grip part formed on the outer circumferential surface of the container part; a cover part detachably coupled to the top of the container part; a weight measurement portion configured to measure the weight of the food ingredients introduced into the container part; an information input/output portion configured to display the measured result of the weight measurement portion, and to receive information about the food ingredients and information about the number of persons from a user; and a control unit configured to determine the state of the food ingredients and control the operation of the blender according to the measured result of the weight measurement portion.
    Type: Application
    Filed: April 9, 2020
    Publication date: November 19, 2020
    Inventor: Sang wook KOH
  • Publication number: 20200218204
    Abstract: An electronic device such as a wristwatch device or other device may have a display. The display may be used to continuously display information such as watch face information. A watch face image on the display may contain watch face elements such as watch face hands, watch face indices, and complications. To reduce burn-in risk for watch face elements, control circuitry in the electronic device may impose burn-in constraints on attributes of the watch face elements such as peak luminance constraints, dwell time constraints, color constraints, constraints on the shape of each element, and constraints on element style. These constraints may help avoid situations in which static elements such as watch face indices create more burn-in than dynamic elements such as watch face hands.
    Type: Application
    Filed: February 15, 2019
    Publication date: July 9, 2020
    Inventors: Tae-Wook Koh, Yiqiang Nie, Yifan Zhang, Giovanni M. Agnoli, Paul S. Drzaic, David A. Doyle
  • Publication number: 20200099012
    Abstract: Display panel stack-up structures are described. In an embodiment, a display panel includes a substrate, a light source, and a multiple layer thin film encapsulation over the light source. In an embodiment, the display panel additionally includes an anti-reflection layer over the light source. In an embodiment, an incoherence layer is located within the thin film encapsulation.
    Type: Application
    Filed: June 21, 2019
    Publication date: March 26, 2020
    Inventors: Yifan Zhang, Amin Salehi, Yun Liu, Paul S. Drzaic, Tae-Wook Koh, Chih Jen Yang, Bhadrinarayana Lalgudi Visweswaran, Chieh-Wei Chen
  • Publication number: 20200074900
    Abstract: A flat-panel display device and method to prevent display panel burn-in through a decimated look-up table with pixel shifting in a display or an augmented reality display.
    Type: Application
    Filed: May 3, 2019
    Publication date: March 5, 2020
    Inventors: Sheng Zhang, Chaohao Wang, Michael Slootsky, Yifan Zhang, Tae-Wook Koh
  • Patent number: 10453388
    Abstract: An electronic device may be provided with a display. A content generator may generate frames of image data to be displayed on the display. The display may have an array of pixels that emit light to display images. The pixels may contain light-emitting devices such as organic light-emitting diodes, quantum dot light-emitting diodes, and light-emitting diodes formed from discrete semiconductor dies. As a result of aging, the light producing capabilities of the light-emitting devices may degrade over time. The electronic device may have a temperature sensor that gathers temperature measurements and an ambient light sensor. A pixel luminance degradation compensator may apply compensation factors to uncorrected pixel luminance values associated with the frames of image data to produce corresponding corrected pixel luminance values for the display. The compensation factors may be based on aging history information such as pixel luminance history, ambient light exposure, and temperature measurements.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: October 22, 2019
    Assignee: Apple Inc.
    Inventors: Jiye Lee, Yifan Zhang, Chieh-Wei Chen, Tae-Wook Koh, Hongwei Chang, Paul S. Drzaic