Patents by Inventor Hyunchul Choi

Hyunchul 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).

  • Publication number: 20220366829
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for dual color management for a multi-pixel density display. In one aspect, the method includes obtaining an image to be shown on a display, where the display includes both a first area that has a first pixel density and a second area that has a second pixel density that is less than the first pixel density, determining that a pixel with an initial value in the image will be displayed in the first area of the display (120), in response to determining that a pixel with the initial value in the image will be displayed in the first area of the display, determining a remapped value for the pixel in the image based on the initial value and a lookup table for the first area (130), and providing the remapped value for output on the display (150).
    Type: Application
    Filed: December 5, 2019
    Publication date: November 17, 2022
    Inventors: Hyunchul Kim, Wonjae Choi, Sun-il Chang
  • Publication number: 20220350013
    Abstract: An electronic device according to various embodiments of the present disclosure may include a wireless communication circuit, a memory, and a processor operatively connected to the memory and the wireless communication circuit, wherein the memory stores instructions that when executed cause the processor to start a ranging round by transmitting, to an external electronic device, a ranging control message (RCM) including transmission control information of data to be transmitted, to perform ranging based on the ranging control message, and upon completion of ranging, to transmit, based on the transmission control information included in the ranging control message, the data in a slot allocated in the ranging round.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 3, 2022
    Inventors: Hyunchul KIM, Yi YANG, Moonseok KANG, Sungjun LIM, Kunyoung CHOI
  • Patent number: 11489141
    Abstract: A flexible display device includes a polarizing plate disposed on a display panel; a cover glass attached to the polarizing plate with an adhesive layer interposed therebetween; a back plate disposed on a rear surface of the display panel; and a fixing tape disposed on an edge of a rear surface of the cover glass, wherein the adhesive layer protrudes more than the display panel, the polarizing plate, and the back plate at corner regions of the flexible display device. Thus, the flexible display device provides effects of improving product quality by improving waterproof performance and minimizing chemical contamination.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: November 1, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kou Choi, HyunChul Kim, Kyoung-Hoon Kim, Kwangju Lee, TaeWoo Lee
  • Publication number: 20220337986
    Abstract: Disclosed is an electronic device configured to transmit an advertising signal using a first communication circuit, establish a connection with each of a plurality of external electronic devices based on one or more response signals for the advertising signal using the first communication circuit, receive an identifier from each of the plurality of external electronic devices, identify at least two external electronic devices corresponding to the same group or the same identifier among the plurality of external electronic devices based on the received identifier, determine a ranging device among the at least two external electronic devices based on communication quality related to the plurality of external electronic devices, and perform UWB ranging with the determined ranging device.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 20, 2022
    Inventors: Gupil CHEONG, Moonseok KANG, Hyunchul KIM, Yi YANG, Moongee CHO, Doosuk KANG, Bokun CHOI
  • Publication number: 20220330463
    Abstract: An electronic device including a substrate on which an electronic component is mounted according to various embodiments may include: a first electromagnetic interference (EMI) shield configured to shield the electronic component included in a first region of the substrate; and a second EMI shield supported by at least a part of the first EMI shield and configured to shield the electronic component included in a second region of the substrate.
    Type: Application
    Filed: August 10, 2021
    Publication date: October 13, 2022
    Inventors: Hojong KIM, Changhwan JIN, Jonghun CHOI, Byungchul LEE, Jaeyoung HUH, Hyunchul HONG, Jaeuk RYU
  • Publication number: 20220320278
    Abstract: A semiconductor device includes a substrate including a first active pattern and a second active pattern, a device isolation layer filling a first trench between the first and second active patterns, the device isolation layer including a silicon oxide layer doped with helium, a helium concentration of the device isolation layer being higher than a helium concentration of the first and second active patterns, and a gate electrode crossing the first and second active patterns.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Inventors: Kyungin CHOI, Hyunchul SONG, Sunjung KIM, Taegon KIM, Seong Hoon JEONG
  • Publication number: 20220319382
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for gamma lookup table compression. In one aspect, a method includes obtaining a gamma value for a pixel of an image to be shown on a display, determining a base gamma value based on a base lookup table that corresponds to a base display condition, determining a delta gamma value based on a delta lookup table that corresponds to a current display condition for the pixel, determining a remapped gamma value for the pixel based on a combination of the base gamma value and the delta gamma value, and providing the remapped gamma value to be shown on the display.
    Type: Application
    Filed: December 17, 2019
    Publication date: October 6, 2022
    Inventors: Hyunchul Kim, Sun-il Chang, Wonjae Choi, Sang Young Youn
  • Publication number: 20220310001
    Abstract: A frame generation subsystem renders a sequence of frames and a display control subsystem provides a brightness control signal configured to control a brightness of frames displayed at a display panel via pulse width modulation (PWM) of the brightness control signal and determines a deviation in a duty cycle of a first PWM period of the brightness control signal from a default duty cycle resulting from a delayed rendering of a frame. The display control subsystem adjusts a duty cycle of at least a second PWM period to compensate for the deviation in the duty cycle of the first PWM period. The resulting average duty cycle of the brightness control signal over the two frame periods is approximately equal to a default duty cycle and thereby mitigates viewable flicker resulting from the duty cycle change caused by the delayed rendering.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 29, 2022
    Inventors: Sang Young YOUN, Sun-il CHANG, Wonjae CHOI, Hyunchul KIM
  • Publication number: 20220301516
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for gamma lookup table compression based on dimensionality reduction. In one aspect, a method includes obtaining a selection of a particular display condition for a display panel from among different display conditions for the display panel, selecting, based on the selection of the particular display condition, a set of weights for a set of basis functions from among different sets of weights that correspond to the different display conditions for the display panel, determining a gamma lookup table for the particular display condition for the display panel based on the set of weights that were selected and the set of basis functions, and remapping an image to be output on the display panel based on the gamma lookup table for the particular display condition.
    Type: Application
    Filed: January 21, 2020
    Publication date: September 22, 2022
    Inventors: Hyunchul Kim, Sun-il Chang, Wonjae Choi
  • Patent number: 11444655
    Abstract: In an electronic device and an operation method thereof according to certain embodiments, the electronic device may include: a first communication circuit configured to perform a first communication using an ultra-wide band (UWB) communication scheme and a processor. The processor may control the communication circuit to: identify, based on a characteristic of data to be transmitted using the first communication circuit, a frame length of the data to be transmitted; determine, based on the identified frame length, a peak voltage of a signal containing the data to be transmitted; and transmit the data using the signal having the determined peak voltage.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 13, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yi Yang, Hyunchul Kim, Sehwan Choi, Sukgi Hong
  • Patent number: 11445468
    Abstract: Provided is an electronic device that may include: an ultra wide band (UWB) communication module; a plurality of antennas; and a processor operatively connected to the UWB communication module. The UWB communication module may be configured to: receive first data of an UWB data frame from an external electronic device by using a first antenna set including at least two antennas among the plurality of antennas to measure a first angle of arrival (AOA); receive second data of the UWB data frame by using a second antenna set including at least two antennas among the plurality of antennas to measure a second AOA, where the second antenna set is configured during a section of the UWB data frame that does not include data; and measure the direction of the external electronic device by using the first AOA and the second AOA. It is possible to provide various other embodiments.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: September 13, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yi Yang, Moonseok Kang, Hyunchul Kim, Jonghoon Jang, Sehwan Choi, Sukgi Hong
  • Publication number: 20220284752
    Abstract: An electronic device is provided. The electronic device includes a communication circuit for performing first communication and second communication, an entry-exit management circuit for controlling a door locking device, and a processor operatively connected to the communication circuit and the entry-exit management circuit.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Inventors: Sukgi HONG, Sehwan CHOI, Hyunchul KIM, Jungsik PARK, Yi YANG
  • Patent number: 11435462
    Abstract: A method and an electronic device for ranging are provided. An ultra-wideband (UWB) signal is received from an external device through a first antenna. A communication state between the external device and the electronic device is identified using information about communication quality included in the UWB signal. A signal received through a second antenna is identified by decoding the received signal based on the identified communication state. A distance between the electronic device and the external device is determined based on whether the received signal is a low frequency (LF) signal.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 6, 2022
    Inventors: Sukgi Hong, Sehwan Choi, Moonseok Kang, Hyunchul Kim, Jungsik Park, Yi Yang, Sejong Yoon, Jonghyo Lee, Jonghoon Jang, Seongah Jeong
  • Patent number: 11423379
    Abstract: An electronic device includes communication circuitry configured to perform short-range wireless communication, ultra-wideband (UWB) communication circuitry configured to perform UWB communication, a secure element comprising a secure data storage configured to provide an execution environment isolated from an operating system (OS) of the electronic device, and a processor. The UWB communication circuitry performs ranging with an external electronic device, receives a first UWB signal including a medium access control (MAC) header and a MAC payload from the external electronic device, and determines, based at least on MAC payload information included in the MAC payload, whether to forward information included in the MAC payload information element to the secure element.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: August 23, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yi Yang, Jonghoon Jang, Jiho Shin, Moonseok Kang, Hyunchul Kim, Sejong Yoon, Jonghyo Lee, Sehwan Choi
  • Patent number: 11425831
    Abstract: A foldable electronic device including a foldable housing including: a hinge structure; a first housing structure connected to the hinge structure; and a second housing structure connected to the hinge structure and being foldable with the first housing structure about the hinge structure. The foldable electronic device further including a flexible display disposed to be viewable from outside of the device; a locker & closer configured such that the foldable housing maintains an unfolding status or a folding status; a first damper member disposed in the interior of the first housing structure and including a magnetic substance; and a second damper member disposed in the interior of the second housing structure and including a magnetic substance such that a repulsive force is applied when being adjacent to the first damper member. In addition, electronic devices according to various embodiments can be provided.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: August 23, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yundong Kim, Hokyung Kang, Bowoong Seo, Hyunchul Oh, Seokwoo Lee, Hyunsuk Choi
  • Publication number: 20220247073
    Abstract: An electronic device is provided. The electronic device includes a housing, a first antenna and a second antenna which are disposed near at least one edge of the housing inside the housing and a first distance away from each other, wherein the first antenna and second antenna are positioned different distances away from an edge vertical to the one edge, a communication circuit operatively connected to the first antenna and second antenna, at least one sensor, a processor, and a memory.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 4, 2022
    Inventors: Sehwan CHOI, Sukgi HONG, Moonseok KANG, Hyunchul KIM, Yi YANG, Jungsik PARK, Sungjun LIM, Jonghoon JANG
  • Patent number: 11383387
    Abstract: A robot according to the present disclosure may include: a casing that has an internal space; a head unit that protrudes upward from the casing and has a first display; a display unit that is disposed ahead of the casing and has a second display; an ascending and descending motor that is disposed in the casing; an ascending and descending plate that ascends and descends between a first position and a second position higher than the first position by power of the ascending and descending motor; a contact bar that has an upper end connected to the head unit and a lower end being in contact with the ascending and descending plate; a fixing plate that is positioned between the ascending and descending plate and the head unit and has an opening through which the contact bar passes; and a link that connects the ascending and descending plate and the fixing plate to the display unit.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: July 12, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Jekwang Youn, Yongbeom Ma, Hyunchul Park, Younghwan Lee, Dongkyu Choi, Daeyoung Jung
  • Patent number: 11380760
    Abstract: A semiconductor device includes a substrate including a first active pattern and a second active pattern, a device isolation layer filling a first trench between the first and second active patterns, the device isolation layer including a silicon oxide layer doped with helium, a helium concentration of the device isolation layer being higher than a helium concentration of the first and second active patterns, and a gate electrode crossing the first and second active patterns.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: July 5, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyungin Choi, Hyunchul Song, Sunjung Kim, Taegon Kim, Seong Hoon Jeong
  • Patent number: 11375922
    Abstract: A body measurement device and a method for controlling the same are disclosed. The body measurement device comprises a TOF camera capturing a first image that includes an RGB image and a depth image; a display displaying a graphic image; and a controller estimating a user's pose based on the first image, controlling the TOF camera to automatically capture a second image, which includes the user's body image in front of the camera, if the user's pose is a first pose, generating the user's body line image based on the captured second image, measuring the user's body size based on the generated body line image; and controlling the display to display the user's body size.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: July 5, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunkyung Ryu, Fataliyev Zaur, Hyunsu Choi, Wonju Lee, Hyunchul Choi
  • Patent number: 11381277
    Abstract: An electronic device for supporting an ultra wide band (UWB) protocol transmits first data, including mode information indicating whether the electronic device supports a mode associated with control of a preamble and a preamble having a first length, to an external electronic device circuit, receives second data including mode information indicating whether the external electronic device supports the mode associated with the control of the preamble from the external electronic device, and controls a length of the preamble, based on the mode information included in the second data.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: July 5, 2022
    Inventors: Jonghoon Jang, Yi Yang, Moonseok Kang, Hyunchul Kim, Jonghyo Lee, Sehwan Choi