Patents by Inventor ChangSoo Choi

ChangSoo 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: 20240140352
    Abstract: A seatbelt of a vehicle includes a buckle tilt mounting device for a tongue plate coupled with a seatbelt webbing restraining an occupant seated in a vehicle seat. The buckle tilt mounting device includes a buckle assembly having a buckle and a buckle cable, and further includes a pre-tensioner system having a housing, a driving member, and a pre-tensioner cable. When the pre-tensioner system is actuated at a time of a vehicle collision or at a time a vehicle collision is anticipated, the driving member retracts the pre-tensioner cable inside the housing such that the buckle assembly is rotatably moved and configured to reduce submarining load on the occupant.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 2, 2024
    Applicant: AUTOLIV ASP, INC.
    Inventors: David SCHNEIDER, Changsoo CHOI, Christina MORRIS
  • Patent number: 11972831
    Abstract: A receiver that receives a multi-level signal includes a pre-amplifier circuit, a slicer circuit and a decoder circuit. The pre-amplifier circuit generates a plurality of intermediate data signals based on an input data signal and a plurality of reference voltages. The slicer circuit generates a plurality of decision signals based on the plurality of intermediate data signals and a clock signal. The decoder circuit generates output data based on the plurality of decision signals. The pre-amplifier circuit includes a first circuit and a second circuit. The first circuit generates one of the plurality of intermediate data signals based on the input data signal and one of the plurality of reference voltages, and has a first structure. The second circuit generates another one of the plurality of intermediate data signals based on the input data signal and another one of the plurality of reference voltages, and has a second structure different from the first structure.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: April 30, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunsub Rie, Eunseok Shin, Youngdon Choi, Changsoo Yoon, Hyunyoon Cho, Junghwan Choi
  • Publication number: 20240099058
    Abstract: A light emitting display device includes a display panel in which a plurality of pixels is disposed, each of the plurality of pixels includes a plurality of sub pixels, each of the plurality of sub pixels includes: a first light emitting diode configured to emit light by a first driving current; a first lens which refracts light emitted from the first light emitting diode; a second light emitting diode configured to emit light by a second driving current; a second lens which refracts light emitted from the second light emitting diode; a driving transistor configured to control the driving currents, and a capacitor which is connected to the driving transistor, and each of an anode electrode of the first light emitting diode and an anode electrode of the second light emitting diode may be initialized to a voltage different from a voltage which is applied to the capacitor.
    Type: Application
    Filed: July 24, 2023
    Publication date: March 21, 2024
    Inventors: Kwanghyun CHOI, ChangSoo Kim, Cheolhwan Lee, JeongOk Jo, SeongYeong Kim
  • Patent number: 11613225
    Abstract: An airbag device is adapted to be installed in a vehicle for protecting an occupant. The airbag device includes a bag-like cushion that inflates and deploys in front of a seat and is adapted to restrain the occupant. In an inflated condition, the airbag cushion includes a main inflating section inflating toward the rear of the vehicle, a pair of lobes protruding toward the rear of the vehicle on both sides of the main inflating section in a vehicle width direction, a pair of secondary inflating sections being provided respectively between the main inflating section and each of the lobes in the vehicle width direction and inflating toward the rear of the vehicle, and a pair of tethers are symmetrically attached and tensioned inside the cushion for preventing the protruded lobes from swinging around the main inflating section of the cushion.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: March 28, 2023
    Assignee: AUTOLIV ASP, INC.
    Inventors: Jeffrey Daniel Williams, Changsoo Choi
  • Publication number: 20220227324
    Abstract: An airbag device is adapted to be installed in a vehicle for protecting an occupant. The airbag device includes a bag-like cushion that inflates and deploys in front of a seat and is adapted to restrain the occupant. In an inflated condition, the airbag cushion includes a main inflating section inflating toward the rear of the vehicle, a pair of lobes protruding toward the rear of the vehicle on both sides of the main inflating section in a vehicle width direction, a pair of secondary inflating sections being provided respectively between the main inflating section and each of the lobes in the vehicle width direction and inflating toward the rear of the vehicle, and a pair of tethers are symmetrically attached and tensioned inside the cushion for preventing the protruded lobes from swinging around the main inflating section of the cushion.
    Type: Application
    Filed: January 20, 2021
    Publication date: July 21, 2022
    Applicant: AUTOLIV ASP, INC.
    Inventors: JEFFREY DANIEL WILLIAMS, CHANGSOO CHOI
  • Patent number: 11292420
    Abstract: Inflatable airbag assemblies and methods are disclosed for a vehicle seating position having a utility component or occupant accessory that at least partially extends over a seat of the vehicle seating position. The utility component/occupant accessory may be stowable, and may be adjustable upward-downward, fore-aft, rotationally, etc. The utility component/occupant accessory may house an inflatable airbag cushion of the inflatable airbag assembly, which may deploy in a collision event so as to be disposed between the utility component/occupant accessory and the vehicle seating position.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: April 5, 2022
    Assignee: Autoliv ASP, Inc.
    Inventors: Changsoo Choi, Harry Park, Vinay Genthikatti
  • Publication number: 20210107426
    Abstract: Inflatable airbag assemblies and methods are disclosed for a vehicle seating position having a utility component or occupant accessory that at least partially extends over a seat of the vehicle seating position. The utility component/occupant accessory may be stowable, and may be adjustable upward-downward, fore-aft, rotationally, etc. The utility component/occupant accessory may house an inflatable airbag cushion of the inflatable airbag assembly, which may deploy in a collision event so as to be disposed between the utility component/occupant accessory and the vehicle seating position.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 15, 2021
    Inventors: Changsoo Choi, Harry Park, Vinay Genthikatti
  • Patent number: 10953836
    Abstract: A surrounding inflatable airbag assembly configured to deploy for a seat back of a vehicle is disclosed. Inflatable airbag assemblies may provide protection for an occupant in a vehicle collision event. In a collision event, or other event producing forward and/or lateral movement of the occupant relative to the vehicle, the disclosed inflatable airbag assembly may receive and support the occupant during ride down so as to prevent or minimize injury resulting from impact with a vehicle structure disposed forward or lateral to a vehicle seating position. The disclosed airbag may deploy from the seat back including a head back portion. During deployment, a front portion of the airbag may extend up and over the head of the occupant and further extend forward and downward in front of the vehicle seating position.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: March 23, 2021
    Assignee: Autoliv ASP, Inc.
    Inventors: Dana Joseph Wold, Changsoo Choi, Mohamad Youssef Alsedawi, Frank Joseph Herzenstiel, II
  • Publication number: 20210009074
    Abstract: A surrounding inflatable airbag assembly configured to deploy for a seat back of a vehicle is disclosed. Inflatable airbag assemblies may provide protection for an occupant in a vehicle collision event. In a collision event, or other event producing forward and/or lateral movement of the occupant relative to the vehicle, the disclosed inflatable airbag assembly may receive and support the occupant during ride down so as to prevent or minimize injury resulting from impact with a vehicle structure disposed forward or lateral to a vehicle seating position. The disclosed airbag may deploy from the seat back including a head back portion. During deployment, a front portion of the airbag may extend up and over the head of the occupant and further extend forward and downward in front of the vehicle seating position.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 14, 2021
    Inventors: Dana Joseph Wold, Changsoo Choi, Mohamad Youssef Alsedawi, Frank Joseph Herzenstiel, II
  • Patent number: 10730470
    Abstract: An inflatable safety restraint system that is downwardly deployable from a roof of a vehicle for protecting an occupant of the vehicle. The inflatable safety restraint system includes at least one inflatable airbag and at least one joint closing the shape of the at least one inflatable airbag to circumscribe an internal cavity. At least one inflator is in fluid communication with the at least one inflatable airbag for inflating the at least one airbag. Upon deployment, the inflatable safety restraint system defines a closed shape for surrounding the occupant of the vehicle.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: August 4, 2020
    Assignee: AUTOLIV ASP, INC.
    Inventor: Changsoo Choi
  • Publication number: 20200017059
    Abstract: An inflatable safety restraint system that is downwardly deployable from a roof of a vehicle for protecting an occupant of the vehicle. The inflatable safety restraint system includes at least one inflatable airbag and at least one joint closing the shape of the at least one inflatable airbag to circumscribe an internal cavity. At least one inflator is in fluid communication with the at least one inflatable airbag for inflating the at least one airbag. Upon deployment, the inflatable safety restraint system defines a closed shape for surrounding the occupant of the vehicle.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 16, 2020
    Applicant: AUTOLIV ASP, INC.
    Inventor: Changsoo CHOI
  • Patent number: 10427638
    Abstract: Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: October 1, 2019
    Assignee: Autoliv ASP, Inc.
    Inventor: Changsoo Choi
  • Patent number: 10293775
    Abstract: Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 21, 2019
    Assignee: Autoliv ASP, Inc.
    Inventors: Xiaohong Wang, Changsoo Choi, Jeffrey D. Williams
  • Publication number: 20180111581
    Abstract: Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.
    Type: Application
    Filed: October 21, 2016
    Publication date: April 26, 2018
    Inventors: Xiaohong Wang, Changsoo Choi, Jeffrey D. Williams
  • Publication number: 20180099637
    Abstract: Airbag cushion assemblies comprising airbag cushion flaps for safety. In some embodiments, the assembly may comprise an airbag housing and an airbag cushion positioned within the airbag housing. An airbag cushion flap may extend from the airbag cushion and may be configured to allow the airbag cushion to deploy from the airbag housing in at least two stages, wherein, in a first stage of the at least two stages, the airbag cushion flap is configured to expand to allow the airbag cushion to partially deploy and wherein, in a second stage of the at least two stages, the airbag cushion is configured to contact the airbag cushion flap and to reduce a punch-out force delivered by the airbag cushion during deployment by, for example, extending through the airbag cushion flap.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 12, 2018
    Inventors: ChangSoo Choi, David Keyser
  • Publication number: 20170355344
    Abstract: Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.
    Type: Application
    Filed: June 8, 2016
    Publication date: December 14, 2017
    Inventor: Changsoo Choi
  • Patent number: 9669794
    Abstract: Airbag cushion assemblies comprising internal stabilizers and related methods. Some embodiments may comprise an airbag cushion comprising a first side and a second side opposite from the first side and a hub comprising a hub opening configured to be coupled with an inflator so as to receive inflation gases during deployment of the airbag cushion through the hub opening. A stabilizer, such as, in some embodiments, a diffuser or another inflatable structure, may be positioned within the airbag cushion and may be non-releasably coupled with the airbag cushion along at least a portion of the first side, along at least a portion of the second side, and adjacent to the hub opening.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: June 6, 2017
    Assignee: AUTOLIV ASP, INC.
    Inventors: Michael J. Lachat, Frank Herzenstiel, Changsoo Choi
  • Patent number: 9643562
    Abstract: Airbags and airbag assemblies are disclosed that include passive adaptive venting. The disclosed embodiments include an airbag cushion to define an inflation chamber and that include a set of vents. The set of vents is disposed through a panel of the airbag cushion. The set of vents allow egress of inflation gas from the inflation chamber and to be in an open state when a degree of compression of the airbag cushion is below a threshold level. The set of vents is configured to be in a closed state and/or obstructed by a vehicle surface of a vehicle structure when the degree of compression of the airbag cushion exceeds the threshold level.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: May 9, 2017
    Assignee: AUTOLIV ASP, INC.
    Inventors: Changsoo Choi, Frank Herzenstiel, Pontus Soderstrom, James Jacobson, Michael J. Lachat, Russ Morris
  • Publication number: 20170057455
    Abstract: Airbag cushion assemblies comprising internal stabilizers and related methods. Some embodiments may comprise an airbag cushion comprising a first side and a second side opposite from the first side and a hub comprising a hub opening configured to be coupled with an inflator so as to receive inflation gases during deployment of the airbag cushion through the hub opening. A stabilizer, such as, in some embodiments, a diffuser or another inflatable structure, may be positioned within the airbag cushion and may be non-releasably coupled with the airbag cushion along at least a portion of the first side, along at least a portion of the second side, and adjacent to the hub opening.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 2, 2017
    Inventors: Michael J. Lachat, Frank Herzenstiel, Changsoo Choi
  • Patent number: 9580039
    Abstract: An airbag can include a first cushion portion that defines a first inflatable chamber and a second cushion portion that is connected to the first cushion portion and defines a second inflatable chamber. The first inflatable chamber can receive inflation gas from an inflator to expand the first cushion portion and the second cushion portion can receive inflation gas from the first inflatable chamber to expand the second cushion portion. A unidirectional valve permits inflation gas to flow from the first inflatable chamber to the second inflatable chamber and restricts backflow of inflation gas from the second inflatable chamber to the first inflatable chamber.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: February 28, 2017
    Assignee: AUTOLIV ASP, INC.
    Inventors: David W. Schneider, ChangSoo Choi