Patents by Inventor Hyuk Choi

Hyuk 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: 10891890
    Abstract: An artificial-reality device has a display with a plurality of pixels. In a calibration mode, the device determines gray-level values for the pixels using a uniform test image. Each pixel has a luminance level proportional to its gray-level value. The device groups the pixels into segments according to the luminance levels. For each of the segments, the device computes an overall luminance level and a luminance target according to the determined gray-level values. When the overall luminance level is below the luminance target for the segment, the device calculates calibration data, which either (i) increases the gray-level of each pixel in the segment by a specified amount or (ii) selects a gamma band for the segment corresponding to a difference between the luminance target and the overall luminance level. The device stores the calibration data. The device is configured to use the stored calibration data in subsequent display of images.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: January 12, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Min Hyuk Choi, Cheonhong Kim, Wook Jin Han
  • Patent number: 10892017
    Abstract: A memory device comprises: a first memory cell, and a second memory cell different from the first memory cell, wherein the first memory cell and the second memory cell are included in same memory block; a first word line connected to the first memory cell; a second word line, different from the first word line, connected to the second memory cell; an address decoder which applies one of an erase voltage and an inhibit voltage different from the erase voltage to each of the first and second word lines; and a control logic which controls an erasing operation on the memory block, using the address decoder, wherein while the erasing operation on the memory block is executed, the inhibit voltage is applied to the first word line after the erase voltage is applied, and the erase voltage is applied to the second word line after the inhibit voltage is applied.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang Wan Nam, Yong Hyuk Choi, Jun Yong Park, Jung No Im
  • Publication number: 20210005954
    Abstract: Various embodiments of the present invention relate to an electronic device comprising a wireless communication circuit, and a portable communication device.
    Type: Application
    Filed: November 5, 2018
    Publication date: January 7, 2021
    Inventors: Dong Ju LEE, Won Jin CHOI, Bong Sup SON, Moon Hyuk CHOI, Se Woong AHN, Su Ho JIN, Jung Hyun PARK, Sung Jun KIM, Sung Chul PARK, Ji Woo LEE
  • Publication number: 20200394971
    Abstract: The disclosed computer-implemented method may include determining a frame rate for a current frame, where the frame rate dictates the amount of time the current frame is to be presented on a display. The display may be a backlight that is powered for a specified amount of time as part of a duty cycle. The method may further include calculating a backlight duty cycle time for the current frame. The backlight duty cycle time may include a minimum amount of powered time plus an additional amount of powered time that is dependent on the frame rate for the current frame. The method may further generate a drive signal for the display using the calculated backlight duty cycle time and driving the display using the generated drive signal. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Application
    Filed: August 20, 2019
    Publication date: December 17, 2020
    Inventors: Cheonhong Kim, Min Hyuk Choi, Rui Zhang, Samuel Gosselin
  • Publication number: 20200386418
    Abstract: The purpose of the present invention is to provide a hot water supplying apparatus which enables supply of hot water by utilizing waste heat of a pipe and a boiler as a heat source if there is a small quantity of residual hot water to use therefor, the residual hot water being required when using hot water of an instantaneous boiler, and a method for utilizing waste heat of a hot water supplying apparatus.
    Type: Application
    Filed: December 4, 2018
    Publication date: December 10, 2020
    Inventors: Hyuk CHOI, Jung Keom KIM, Chang Heoi HU
  • Publication number: 20200386417
    Abstract: The purpose of the present invention is to provide a hot water supplying apparatus that enables a user to conveniently execute a hot water control function in a location where a faucet is located, and a method for controlling the same. The hot water supplying apparatus for achieving said purpose comprises: a flow rate detection unit for detecting a flow rate change of water supplied by turning a faucet on/off and outputting a flow rate signal; and a control unit for, when the flow rate detection unit detects a flow rate change in a specific pattern, controlling a preset hot water control function to be executed according to the flow rate change pattern.
    Type: Application
    Filed: December 4, 2018
    Publication date: December 10, 2020
    Inventors: Hyuk CHOI, Jung Keom KIM
  • Patent number: 10863126
    Abstract: Provided are a CIS system and a method of processing the same using a low power multi-mode data path. In order to drive a circuit with low-power, the CMOS Image Sensor (CIS) system rearranges and transmits data in consideration of a color of pixel data and a most significant bit (MSB) and a least significant bit (LSB) of the pixel data using a low-power multi-mode data path. The CIS system can implement multi-modes including a low power mode and a high speed mode, reduce the number of data transitions by merging data of the same color in a always-on low-power mode and a photo-shooting low-power (PS-LP) mode to reduce power consumption and process data in a high speed using a pipeline in a photo-shooting high-speed (PS-HS) mode.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: December 8, 2020
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Sang Hoon Kim, Jae Hyuk Choi, Jung Hoon Chun
  • Publication number: 20200382009
    Abstract: A multi output DC/DC converter includes a transformer having a primary side winding connected to an input side and a secondary side winding connected to an output side; a rectifying diode for rectifying an output of the secondary side winding; an output inductor having a first end connected to the rectifying diode; and a first output switching element and a second output switching element each having first ends connected to a second end of the output inductor, where a second end of the first output switching element and a second end of the second output switching element become first and second output stages outputting different voltages, respectively.
    Type: Application
    Filed: November 6, 2019
    Publication date: December 3, 2020
    Inventors: Jae Hyuk Choi, Byeong Seob Song, Sam Gyun Kim, Jae Kuk Kim, Bom Seok Lee, Jae Hyun Ahn
  • Publication number: 20200365211
    Abstract: A memory device comprises: a memory cell region including a first metal pad, a peripheral circuit region including a second metal pad and vertically connected to the memory cell region by the first metal pad and the second metal pad, a first memory cell in the memory cell region, and a second memory cell different from the first memory cell in the memory cell region, wherein the first memory cell and the second memory cell are included in a same memory block as each other, a first word line in the memory cell region connected to the first memory cell, a second word line in the memory cell region, different from the first word line, connected to the second memory cell, an address decoder in the peripheral circuit region configured to apply one of an erase voltage and an inhibit voltage different from the erase voltage to each of the first and second word lines, and a control logic in the peripheral circuit region configured to control an erasing operation on the memory block, using the address decoder, wherein
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: SANG WAN NAM, YONG HYUK CHOI, JUN YONG PARK, JUNG NO IM
  • Patent number: 10824291
    Abstract: A device is provided. The device includes a display, a storage configured to store a work group including a plurality of jobs that are selected by a user, and a controller configured to control the display to display a window corresponding to at least one job included in the work group and display at least one object representing another job included in the work group on the displayed window.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: November 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-chul Lee, Jong-hyuk Choi, Nam-suk Lee, Hak-su Jeong
  • Patent number: 10822237
    Abstract: A method for preparing graphene balls, the method including, a) preparing a dispersion which includes, a graphene oxide, a reducing agent ranging from a monosaccharide to a polysaccharide, ammonia water and a dispersion medium; and b) spraying and drying the dispersion. According to the preparation method of the present disclosure, it is possible to prepare uniformly sized and spherical graphene balls. Such graphene can be applied to various fields due to excellent physical and chemical characteristics.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: November 3, 2020
    Assignee: Korea Institute Of Geoscience And Mineral Resources
    Inventors: Hee-Dong Jang, Han-Kwon Chang, Ji-Hyuk Choi
  • Publication number: 20200339513
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: December 24, 2018
    Publication date: October 29, 2020
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Yu-Jin HEO, Hyun-Ju LA, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • Publication number: 20200341601
    Abstract: A method for setting a parameter includes the steps of: selecting, by a touch or click, one point on an electronic map displayed on an electronic device; displaying a parameter input area around the selected one point on the electronic map; detecting, by the electronic device, panning or drag performed along a direction in which the displayed parameter input area is formed; adjusting a value of the parameter according to the detected panning or drag; detecting, by the electronic device, panning or drag performed in a direction toward the one point; and setting the parameter to the adjusted value, wherein the touch or click is maintained while the steps of setting the one point through setting the parameter is performed.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Inventors: Kyoung Jeon JEONG, Sung Pil Chun, Jin Hyuk Choi
  • Publication number: 20200343452
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.
    Type: Application
    Filed: December 24, 2018
    Publication date: October 29, 2020
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Nam-Jin LEE, Min-Ji PARK, Won-Jang JEONG, Jin-Seok CHOI, Dae-Hyuk CHOI, Joo-Dong LEE
  • Publication number: 20200331355
    Abstract: A battery-to-vehicle charging system includes: a vehicle including an on-board charger including a power factor correction circuit having a boost converter circuit, a first battery that is charged with a charge voltage output from the on-board charger, and a first controller controlling a charge process on the basis of a type of a charge power source provided from the outside; and a mobile energy storage device including a second battery storing DC charge power provided to the first battery, and a second controller providing a determination signal for the type of the charge power source to the first controller, in which when the first controller receives the determination from the second controller and the charge power source is determined as the mobile energy storage device, the first controller controls the power factor correction circuit to operate as a boost converter.
    Type: Application
    Filed: October 22, 2019
    Publication date: October 22, 2020
    Inventors: Jae Hyuk CHOI, Byeong Seob SONG
  • Patent number: 10811195
    Abstract: A solid electrolytic capacitor includes a capacitor body including a sintered body of tantalum powders; an anode wire having a first region in a width direction embedded in the capacitor body and a second region in the width direction led through one surface of the capacitor body; an encapsulant part enclosing the capacitor body and the anode wire; an anode terminal disposed on an outer surface of the encapsulant part and connected to the anode wire; a cathode terminal spaced apart from the anode terminal and disposed on the outer surface of the encapsulant part; and a cathode lead portion electrically connecting the capacitor body and the cathode terminal to each other, wherein at least one of the anode wire and the cathode lead portion is provided in plural.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 20, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hong Kyu Shin, Jae Bum Cho, Jae Hyuk Choi
  • Patent number: 10802676
    Abstract: A method for setting a parameter includes the steps of: selecting, by a touch or click, one point on an electronic map displayed on an electronic device; displaying a parameter input area around the selected one point on the electronic map; detecting, by the electronic device, panning or drag performed along a direction in which the displayed parameter input area is formed; adjusting a value of the parameter according to the detected panning or drag; detecting, by the electronic device, panning or drag performed in a direction toward the one point; and setting the parameter to the adjusted value, wherein the touch or click is maintained while the steps of setting the one point through setting the parameter is performed.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 13, 2020
    Assignee: Hanwha Techwin Co., Ltd.
    Inventors: Kyoung Jeon Jeong, Sung Pil Chun, Jin Hyuk Choi
  • Patent number: 10800522
    Abstract: An electronic device includes a communication circuit configured to communicate with an unmanned aerial vehicle (UAV) including a camera, a memory configured to store first flight information including a first flight pattern for a first location and first driving information of the camera, the first driving information corresponding to the first flight pattern, and a processor configured to be operatively connected with the communication circuit and the memory. The processor is configured to determine a flight reference location of the UAV, and control the UAV via the communication circuit such that the UAV flies based on the determined flight reference location and the first flight information.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: October 13, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In Hyuk Choi, Youn Lea Kim, Dong Hyun Chang, Bo Kun Choi, Sung Jun Kim, Seung Nyun Kim
  • Patent number: 10805766
    Abstract: Disclosed herein are a mobile-communication-based navigation service method for supporting emergency rescue and a service server using the method. The present invention relates to provision of an interactive navigation service between a rescuer and a person who needs to be rescued in a mobile-communication-based navigation service method for supporting emergency rescue.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: October 13, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Hyuk Choi, Joo-Young Kim, Young-Su Cho, Myung-In Ji
  • Publication number: 20200321234
    Abstract: A transfer method of transferring an object to a target substrate by using a deformable film is provided. The method includes: a first process of forming an object on a source substrate, a second process of placing a deformable film on the source substrate on which the object is formed, a third process of embedding the object into the deformable film, a fourth process of separating an object, which is to be transferred, from the source substrate, integrating the transfer object in or on a surface of the deformable film, and separating deformable film, in which the transfer object is integrated, from the source substrate, and a fifth process of transferring the object integrated into the deformable film to a target substrate.
    Type: Application
    Filed: June 22, 2020
    Publication date: October 8, 2020
    Applicant: LC SQUARE CO., LTD.
    Inventors: Je Hyuk CHOI, Chang Wan KIM, Chan Soo SHIN, Hyeong Ho PARK, Shin Keun KIM