Patents by Inventor Chang-sik Choi

Chang-sik 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: 11378626
    Abstract: A system for managing a battery of a vehicle includes a first controller configured to control a power-on (IG ON) state and a power-off (IG OFF) state of a plurality of controllers in the vehicle and to be periodically woken up in the power-off (IG OFF) state to wake up at least some of the plurality of controllers, and a second controller configured to turn off a main relay connecting a first battery in the vehicle and a vehicle system when the power-off (IG OFF) state begins, to monitor a state of the first battery storing energy for generating power of the vehicle by maintaining power during a preset first reference time, to be woken up at a wake-up period of the first controller when the first reference time elapses, and to monitor the state of the first battery.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: July 5, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ki Seung Baek, Ik Jun Choi, Do Sung Hwang, Kyung Taek Jung, Chang Yu Kim, Dea Ki Cheong, Tae Hyuck Kim, Han Seung Myoung, Ho Joong Lee, Hye Seung Kim, Byoung Jik Ahn, Kyu Beom Ko, Hyo Sik Moon, Jong Seo Yoon, Sung Il Lee, Hong Min Oh, Jin Woo Cho
  • Patent number: 11374641
    Abstract: Certain aspects of the present disclosure provide techniques for grouping devices to reduce latency in round trip time based millimeter wave positioning. A method that may be performed by a wireless device includes obtaining a status, of the wireless device, within a group including the wireless device, wherein the group comprises a group owner (GO) of the group and one or more members of the group; and participating in a positioning procedure that estimates a position of at least one of the GO or the one or more members according to the status of the wireless device.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: June 28, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chang-Sik Choi, Shuanshuan Wu, Kapil Gulati, Anantharaman Balasubramanian
  • Publication number: 20220198111
    Abstract: A method of reinforcement learning of a neural network device for generating a verification vector for verifying a circuit design comprising a circuit block includes inputting a test vector to the circuit block, generating one or more rewards based on a coverage corresponding to the test vector, the coverage being determined based on a state transition of the circuit block based on the test vector, and applying the one or more rewards to a reinforcement learning.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In Huh, Jeong-hoon Ko, Hyo-jin Choi, Seung-ju Kim, Chang-wook Jeong, Joon-wan Chai, Kwang-il Park, Youn-sik Park, Hyun-sun Park, Young-min Oh, Jun-haeng Lee, Tae-ho Lee
  • Patent number: 11363530
    Abstract: A user equipment (UE) in a vehicle (V-UE) broadcasts multi-phased ranging signals with which other entities may determine the range to the V-UE. The multi-phased ranging signals may include a first message, which may be broadcast in the Intelligent Transport System (ITS) spectrum, includes ranging information, such as a source identifier, location information for the broadcasting V-UE, and an expected time of broadcast of the ranging signal. The ranging signal may then be broadcast at the expected time and may include the source identifier. A second message, which be broadcast in the ITS spectrum, may include clock error information for the V-UE. A receiving entity may determine the range to the V-UE based on the time of arrival of the ranging signal and the expected time of transmission, as well as the clock error information. The receiving entity may further generate a position estimate based on the received location information.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: June 14, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chang-Sik Choi, Kapil Gulati, Sudhir Kumar Baghel, Urs Niesen, Jubin Jose, Anantharaman Balasubramanian
  • Publication number: 20220182780
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first vehicle user equipment (VUE) may transmit, to a node, first information associated with a presence of an object in a region of interest based at least in part on a sensing of the region of interest performed by the first VUE. The VUE may receive, from the node, second information associated with the presence of the object in the region of interest based at least in part on a sensing of the region of interest performed by a second VUE. The VUE may determine whether the object is present in the region of interest based at least in part on the first information and the second information. The VUE may perform an action based at least in part on whether the object is present in the region of interest. Numerous other aspects are provided.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 9, 2022
    Inventors: Anantharaman BALASUBRAMANIAN, Junyi LI, Dan ZHANG, Kapil GULATI, Chang-Sik CHOI
  • Patent number: 11356814
    Abstract: Disclosed are some examples of techniques for decentralized and scalable ranging and positioning of distributed devices. For example, an anchor user equipment (UE) can detect, from initiator user equipments (UEs), respective initiator positioning reference signal (PRS) transmissions associated with respective initiator positioning sessions. Based on the initiator PRS transmissions, one or more characteristics of PRS messaging associated with the initiator positioning sessions can be determined. When the one or more characteristics satisfies a criterion or criteria, the anchor UE can broadcast an anchor PRS transmission indicating initiation of an anchor positioning session by the anchor UE.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: June 7, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chang-Sik Choi, Kapil Gulati, Junyi Li, Gene Wesley Marsh
  • Patent number: 11346576
    Abstract: An air conditioner of present invention comprises a housing having an outer panel forming the exterior and an opening formed on the outer panel, a heat exchanger configured to exchange heat with air flowing into the housing, and a door unit configured to open or close the opening by moving forward or backward from the opening through which the heat exchanged air is discharged. Wherein the door unit comprises a door blade configured to open or close the opening, a door operating part configured to move the door blade forward or backward, and a controller configured to control the air discharged from the opening to be moved forward from the opening in a straight line or to be discharged radially from the opening by controlling a distance between the door blade and the opening.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Hyun Chun, Jin Gyun Kim, Seong Deok Cheon, Sung Bum Kang, Jun Seok Kwon, Sung Jae Kim, Jong Whal Kim, Ji Hong Kim, Seung Won Oh, Sang Ki Yoon, Yeon Seob Yun, Won Hee Lee, Chang Sik Lee, Hyun Joo Jeon, Jae Rim Jung, Chang Woo Jung, Weon Seok Choi
  • Patent number: 11346577
    Abstract: An air conditioner of present invention comprises a housing having an outer panel forming the exterior and an opening formed on the outer panel, a heat exchanger configured to exchange heat with air flowing into the housing, and a door unit configured to open or close the opening by moving forward or backward from the opening through which the heat exchanged air is discharged. Wherein the door unit comprises a door blade configured to open or close the opening, a door operating part configured to move the door blade forward or backward, and a controller configured to control the air discharged from the opening to be moved forward from the opening in a straight line or to be discharged radially from the opening by controlling a distance between the door blade and the opening.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Hyun Chun, Jin Gyun Kim, Seong Deok Cheon, Sung Bum Kang, Jun Seok Kwon, Sung Jae Kim, Jong Whal Kim, Ji Hong Kim, Seung Won Oh, Sang Ki Yoon, Yeon Seob Yun, Won Hee Lee, Chang Sik Lee, Hyun Joo Jeon, Jae Rim Jung, Chang Woo Jung, Weon Seok Choi
  • Patent number: 11346575
    Abstract: An air conditioner of present invention comprises a housing having an outer panel forming the exterior and an opening formed on the outer panel, a heat exchanger configured to exchange heat with air flowing into the housing, and a door unit configured to open or close the opening by moving forward or backward from the opening through which the heat exchanged air is discharged. Wherein the door unit comprises a door blade configured to open or close the opening, a door operating part configured to move the door blade forward or backward, and a controller configured to control the air discharged from the opening to be moved forward from the opening in a straight line or to be discharged radially from the opening by controlling a distance between the door blade and the opening.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Hyun Chun, Jin Gyun Kim, Seong Deok Cheon, Sung Bum Kang, Jun Seok Kwon, Sung Jae Kim, Jong Whal Kim, Ji Hong Kim, Seung Won Oh, Sang Ki Yoon, Yeon Seob Yun, Won Hee Lee, Chang Sik Lee, Hyun Joo Jeon, Jae Rim Jung, Chang Woo Jung, Weon Seok Choi
  • Patent number: 11349159
    Abstract: Provided are a battery management system and a battery pack including the same. The battery management system includes a plurality of slave controllers, a plurality of temperature sensors, and a master controller. The plurality of temperature sensors are disposed in a plurality of different regions within the battery pack in a distributed fashion. The master controller is communicably coupled to the plurality of temperature sensors through a wired communication network. The master controller is communicably coupled to the plurality of slave controllers through a wireless communication network. The master controller determines a position of each of the plurality of slave controllers based on a temperature value of each region measured by the plurality of temperature sensors.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: May 31, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji-Won Hwang, Yean-Sik Choi, Ji-Eun Kim, Chang-Hyun Sung, Sang-Hoon Lee
  • Patent number: 11342009
    Abstract: A device and a method for equalizing and precharging a cell module, which may form a circuit for performing a corresponding operation by a converter unit by selectively connecting the converter unit and one or more cell modules by controlling a conduction state of a switching unit based on an operation which the converter intends to perform.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 24, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Chang Hyun Sung, Sang Hoon Lee, Yean Sik Choi
  • Publication number: 20220154364
    Abstract: An exemplary system for controlling electrodeposition coating for electrochemically forming a coating film on a coating object in an electrodeposition tank storing electrodeposition solution includes, a positive electrode configured to apply a positive electrode voltage to a positive electrode disposed in the electrodeposition tank, a negative electrode configured to apply a negative electrode voltage to the coating object transferred by a hanger, and an electrodeposition controller configured to electrochemically deposit the coating film on an external surface and an internal surface of the coating object by applying the positive electrode voltage to the positive electrode and the negative electrode voltage to the negative electrode, where the electrodeposition controller may be configured to control voltage, current, and pulse in multi-stages over time from a dip-in time point to a draw-out time point of the coating object into and from the electrodeposition tank.
    Type: Application
    Filed: August 17, 2021
    Publication date: May 19, 2022
    Inventors: Kyung Mo Jang, Chang Sik Choi, Heung Ki Min
  • Publication number: 20220157914
    Abstract: A display device is provided. The display device includes a substrate, a first electrode, a second electrode, and third electrode spaced apart from each other in a first direction on the substrate, a repair line spaced apart from the first to third electrodes in the first direction on the substrate, a repair connection portion connecting the third electrode and the repair line, and light emitting elements on respective ones of the first to third electrodes and spaced apart from each other.
    Type: Application
    Filed: September 16, 2021
    Publication date: May 19, 2022
    Inventors: Hoon KIM, Chang Hyeok CHOI, Yong Sik HWANG
  • Publication number: 20220159428
    Abstract: Techniques described herein provide for the efficient usage of an RF channel for PRS transmissions by performing LBT sensing for a group of one or more vehicles (e.g., V2X vehicles) in a predetermined area by using an RSU. The RSU can determine a sequence in which an order for each vehicle in the group to transmit a respective PRS is defined, and provide the sequence to the group. The RSU may further perform the LBT functionality by listening to availability on the RF channel and, when the channel becomes available, the RSU can initiate this sequence by sending an initial PRS. This LBT sensing for a group can provide far more efficient usage of the RF channel than if LBT functionality were performed by each divisional vehicle.
    Type: Application
    Filed: November 16, 2020
    Publication date: May 19, 2022
    Inventors: Chang-Sik CHOI, Kapil GULATI, Sudhir Kumar BAGHEL
  • Publication number: 20220150863
    Abstract: In one example, a method being performed by a first station and comprises: transmitting a first message including an indication of whether a clock reconfiguration event occurs at the first station; transmitting a first positioning reference signal (PRS); receiving from a second station a second PRS; and transmitting to the second station a second message including a first time when the first PRS is transmitted by the first station and a second time when the second PRS is received by the first station, to enable the second station to determine a roundtrip time (RTT) between the first station and the second station based on the first time, the second time, a third time when the second station receives the first PRS, a fourth time when the second station transmits the second PRS, and the indication.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 12, 2022
    Inventors: Chang-Sik CHOI, Kapil GULATI, Sudhir Kumar BAGHEL, Anantharaman BALASUBRAMANIAN
  • Patent number: 11317370
    Abstract: Disclosed are some examples of techniques for ranging and positioning of distributed devices to avoid local and/or periodic interference. For example, an initiator user equipment (UE) can broadcast a positioning reference signal (PRS) message of a current positioning session to responder UEs. One or more characteristics of PRS transmission associated with a first responder UE in the current positioning session can be determined. Based on the characteristic(s), interference with the first responder UE can be identified, which can cause the initiator UE to change the broadcast order of the responder UEs for a next positioning session.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: April 26, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chang-Sik Choi, Kapil Gulati, Junyi Li, Gene Wesley Marsh
  • Publication number: 20220109484
    Abstract: Certain aspects of the present disclosure provide techniques for grouping devices to reduce latency in round trip time based millimeter wave positioning. A method that may be performed by a wireless device includes obtaining a status, of the wireless device, within a group including the wireless device, wherein the group comprises a group owner (GO) of the group and one or more members of the group; and participating in a positioning procedure that estimates a position of at least one of the GO or the one or more members according to the status of the wireless device.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 7, 2022
    Inventors: Chang-Sik CHOI, Shuanshuan WU, Kapil GULATI, Anantharaman BALASUBRAMANIAN
  • Publication number: 20220099786
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may identify a plurality of UEs for a UE positioning session. The UE may identify a set of parameters for the UE positioning session. The UE may broadcast information indicating at least the set of parameters for the UE positioning session. The UE may receive, from at least one of the plurality of UEs, a set of positioning reference signals (PRSs) based at least in part on the set of parameters. The UE may broadcast, based at least in part on the set of PRSs, positioning information. Numerous other aspects are provided.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 31, 2022
    Inventors: Chang-Sik Choi, Kapil Gulati, Gene Wesley Marsh, Peter Gaal
  • Publication number: 20220078581
    Abstract: Certain aspects of the present disclosure provide techniques for improving positioning accuracy of user equipments (UEs) using non line-of-sight (NLOS) positioning reference signals (PRS) and map information. A method that may be performed by a UE includes obtaining map information regarding, at least, one or more reflectors in an environment including at least the UE and another node, detecting at least one positioning reference signal (PRS) transmission that travels one or more non line-of-sight (NLOS) transmission paths in the environment, and participating in a positioning procedure that estimates a position of the UE based, at least in part, on the at least one PRS transmission that travels the one or more NLOS transmission paths and the map information.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 10, 2022
    Inventors: Chang-Sik CHOI, Kapil GULATI, Junyi LI, Piyush GUPTA
  • Publication number: 20220070883
    Abstract: Methods, systems, and devices for wireless communications are described. A device may receive a directional positioning reference signal over one or more beams from another device. The device may transmit a broadcast positioning reference signal in response to receipt of the directional positioning reference signal. The device may receive, from the other device, a report including timing and directionality associated with transmission of the directional positioning reference signal. The report may also include timing and directionality associated with receipt of the broadcast positioning reference signal at the other device. Responsive to receipt of the report, the device may transmit beam specific measurement information associated with the one or more beams to the other device. The device may communicate with the other device using a beam of the one or more beams based at least on the report and the beam specific measurement information.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Inventors: Chang-Sik Choi, Shuanshuan Wu, Kapil Gulati