Patents by Inventor Chul Soon Park

Chul Soon Park 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: 20220229310
    Abstract: An actuator for a reflector may include a carrier having a first groove rail at the rear, a first magnet above the carrier, a middle guide having a first guide rail to face the groove rail and having a second groove rail of a track shape at the rear, a first ball between the first groove rail and the first guide rail, a second magnet at the rear of the middle guide, a base having a second guide rail to face the second groove rail and the middle guide, a second ball between the second groove rail and the second guide rail, a circuit board with a first coil and a second coil, a pulling yoke at the front of the middle guide, and a pulling magnet at the rear of the carrier to face the pulling yoke and to generate an attractive force to the pulling yoke.
    Type: Application
    Filed: March 8, 2021
    Publication date: July 21, 2022
    Inventors: chul soon PARK, je seung YEON, in su KANG, hyeonik CHO
  • Publication number: 20220209652
    Abstract: An apparatus for controlling a power factor correction circuit of a charger for charging a vehicle batter is configured to correct a power factor of an input AC voltage through switching of a switching element. The apparatus for controlling the power factor correction circuit includes: a phase angle detection unit configured to detect phase angle information of the input AC voltage; and a frequency determination unit configured to synchronize a period in which a preset frequency variation value varies, with a period of the input AC voltage by applying the phase angle information to the frequency variation value, and determine, as a switching frequency of the switching element, a value obtained by applying the synchronized frequency variation value to a preset fundamental frequency value.
    Type: Application
    Filed: October 18, 2021
    Publication date: June 30, 2022
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Jee Heon Kim, Hyun Wook Seong, Sung Uk Park, Chul Soon Kim, Hui Sung Jang, Dong Gyun Woo
  • Publication number: 20220209552
    Abstract: A device for supplying power from a vehicle battery to the outside is provided. The device includes an inverter circuit having a bridge circuit with multiple switching elements and that converts the received DC power into the AC power by switching the switching elements and that outputs the AC power. A controller controls an on/off state of each switching element through pulse width modulation. When an output AC output to the load has a value greater than a preset reference value or an input direct current input into the inverter has a value greater than a preset reference value, the controller changes a duty of each switching element to reduce an output AC voltage output from the inverter. When the reduced output AC voltage has a value equal to or less than a preset reference value, the controller stops a power conversion operation of the inverter.
    Type: Application
    Filed: September 13, 2021
    Publication date: June 30, 2022
    Inventors: Sung Uk Park, Hyun Wook Seong, Dong Gyun Woo, Chul Soon Kim, Hui Sung Jang, Jee Heon Kim
  • Patent number: 11350536
    Abstract: The display apparatus includes a display assembly. The display apparatus further includes a mounting device on which the display assembly is mounted and a rotating shaft forming the center of rotation of the display assembly. The rotating shaft is at a fixed location for the mounting device and the display assembly, respectively. The display assembly is switched between a first mode and a second mode rotated from the first mode about a rotating shaft and is changed in the height of the center of the display assembly.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: May 31, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Su Choi, Chul Soon Park, Woo Sung In, Hyun Jun Jung, Jong Hee Han
  • Publication number: 20220091365
    Abstract: An actuator for driving a reflector includes a movement frame, a first support frame, a first drive coil, a first rotation guide and a first ball. The movement frame includes a reflector configured to reflect or refract light to a lens and a first magnet. The first support frame is configured to provide a space of the movement frame to move. The first drive coil is configured to generate an electromagnetic force in the first magnet to rotationally move the movement frame in a first direction based on the first support frame. The first rotation guide is arranged between the movement frame and the first support frame and has an arc shape so that the movement frame rotates in the first direction. The first ball is arranged inside the first rotation guide, wherein a center of curvature of the first rotation guide corresponds to a center of rotation of the reflector.
    Type: Application
    Filed: March 9, 2021
    Publication date: March 24, 2022
    Applicant: JAHWA ELECTRONICS CO., LTD.
    Inventors: Chul Soon PARK, In Soo KANG, Je Seung YEON, Soo Young YOON, Jaeseon LEE, Hyeonik CHO
  • Publication number: 20220072502
    Abstract: A stirrer includes a magnetic bar and a microwave absorbing layer around the magnetic bar. The stirrer absorbs a microwave and converts the microwave to thermal energy to heat the mixed solution reactant.
    Type: Application
    Filed: April 21, 2021
    Publication date: March 10, 2022
    Inventors: DONGHEE LEE, CHUL SOON PARK, JUNGHOON SONG
  • Publication number: 20220065810
    Abstract: The present invention relates to a graphene channel member comprising a graphene film and a cadaverine olfactory receptor immobilized to the graphene film, a graphene transistor comprising: a substrate; the graphene channel member; and a pair of electrodes, and a bio sensor comprising same.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 3, 2022
    Applicants: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Oh Seok KWON, Hyun Seok SONG, Tai Hyun PARK, Kyung Ho KIM, Jin Yeong KIM, Dong Seok MOON, Seon Joo PARK, Chul Soon PARK
  • Publication number: 20210356461
    Abstract: The present invention relates to a carbene compound having substituted at the terminal polyethylene glycol (PEG) having nitrogen-containing functional groups, a carbene-metal nanoparticle complex in which the carbene compound and metal nanoparticles are bounded, a preparation method thereof, and a biosensor using same.
    Type: Application
    Filed: October 10, 2019
    Publication date: November 18, 2021
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Oh Seok KWON, Tae Joon KANG, Seon Joo PARK, Chul Soon PARK, Kyung Ho KIM, Jin Yeong KIM, Ji Yeon LEE, Chang Soo LEE
  • Publication number: 20210247469
    Abstract: An apparatus for operating an optical-reflector according to an embodiment of the present disclosure includes a first carrier configured to rotate based on a first direction perpendicular to an optical axis, a second carrier having an optical-reflector for reflecting a light toward a lens and accommodated in the first carrier to rotate based on a second direction perpendicular to both the optical axis and the first direction with respect to the first carrier, a plurality of magnets provided to the second carrier at different positions, a plurality of hall sensors configured to output signals respectively corresponding to the positions of the plurality of magnets, and a position control unit configured to calculate the signals input from the plurality of hall sensors to generate a position signal that is a signal about a current position of the second carrier.
    Type: Application
    Filed: April 28, 2021
    Publication date: August 12, 2021
    Inventors: Chul Soon PARK, Jung Min SON, Sang hwa LEE
  • Publication number: 20210181147
    Abstract: The present invention relates to a graphene transistor comprising: a substrate; a graphene channel layer arranged on the substrate; a pair of metals spaced from each other and respectively arranged at opposite ends of the graphene channel layer; and a linker layer arranged on the graphene channel layer and including an N-heterocyclic carbene compound, a fabrication method therefor, and a biosensor comprising the same. The graphene transistor according to the present invention in which the carbene group of the N-heterocyclic carbene compound forms a covalent bond with the graphene channel layer to modify the whole surface of the graphene channel layer exhibits excellent electric conductivity as a transistor and a biosensor comprising the transistor is improved in selectivity and sensitivity.
    Type: Application
    Filed: October 29, 2018
    Publication date: June 17, 2021
    Inventors: Oh Seok KWON, Chang Soo LEE, Seon Joo PARK, Tai Hwan HA, Chul Soon PARK, Kyung Ho KIM, Jin Yeong KIM
  • Patent number: 10942364
    Abstract: An apparatus for driving an optical system with a memory unit includes a main frame having an optical system; a base frame configured to accommodate the main frame; a driving unit configured to move the main frame in a first direction perpendicular to an optical axis with respect to the base frame; and a memory unit configured to store first reference position information that is information about a position at which the optical system is aligned in the first direction.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: March 9, 2021
    Assignee: JAHWA electronics Co., Ltd.
    Inventors: Chul Soon Park, Je Seung Yeon, Kyoung Yong Lee, Sang Hwa Lee
  • Patent number: 10921552
    Abstract: An autofocus apparatus according to an embodiment of the present invention includes a reflector provided to a rear side of a lens assembly and configured to change a path of a light passing through the lens assembly so that the light is oriented toward an image sensor; a carrier to which the reflector is mounted, the carrier being configured to linearly move in an optical axis direction; a housing configured to accommodate the carrier; and a driving unit configured to move the carrier so that a distance between the reflector and the lens assembly and a distance between the reflector and the image sensor are changed simultaneously.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: February 16, 2021
    Assignee: JAHWA ELECTRONICS CO., LTD.
    Inventors: Chul Soon Park, Byung cheol Lee, Kyoung Yong Lee, Je Seung Yeon, In su Kang
  • Publication number: 20200352047
    Abstract: The display apparatus includes a display assembly. The display apparatus further includes a mounting device on which the display assembly is mounted and a rotating shaft forming the center of rotation of the display assembly. The rotating shaft is at a fixed location for the mounting device and the display assembly, respectively. The display assembly is switched between a first mode and a second mode rotated from the first mode about a rotating shaft and is changed in the height of the center of the display assembly.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Su CHOI, Chul Soon PARK, Woo Sung IN, Hyun Jun JUNG, Jong Hee HAN
  • Patent number: 10820434
    Abstract: The display apparatus includes a display assembly. The display apparatus further includes a mounting device on which the display assembly is mounted and a rotating shaft forming the center of rotation of the display assembly. The rotating shaft is at a fixed location for the mounting device and the display assembly, respectively. The display assembly is switched between a first mode and a second mode rotated from the first mode about a rotating shaft and is changed in the height of the center of the display assembly.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: October 27, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Su Choi, Chul Soon Park, Woo Sung In, Hyun Jun Jung, Jong Hee Han
  • Publication number: 20200158793
    Abstract: An apparatus for operating an optical-reflector includes a first carrier configured to rotate based on a first direction perpendicular to an optical axis, a second carrier having an optical-reflector for reflecting a light toward a lens and accommodated in the first carrier to rotate based on a second direction perpendicular to both the optical axis and the first direction with respect to the first carrier, a plurality of magnets provided to the second carrier at different positions, a plurality of hall sensors configured to output signals respectively corresponding to the positions of the plurality of magnets, and a position control unit configured to calculate the signals input from the plurality of hall sensors to generate a position signal that is a signal about a current position of the second carrier.
    Type: Application
    Filed: March 19, 2019
    Publication date: May 21, 2020
    Inventors: Chul Soon PARK, Jung Min SON, Sang hwa LEE
  • Patent number: 10571093
    Abstract: An apparatus for supporting an optical reflector to change a path of light and introduce the light to a lens includes an inclined unit configured to support a reflective surface of the optical reflector; a guide wall formed at a side of the inclined unit to support a side surface of the optical reflector; a guide opening formed in the guide wall; and a support member made of a material different from the material of the optical reflector and inserted into the guide opening so that an inner surface of the support member is fixedly coupled to the side surface of the optical reflector.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: February 25, 2020
    Assignee: JAHWA electronics Co., Ltd.
    Inventors: Chul Soon Park, Jung Min Son, Min Gyu Suh
  • Patent number: 10564442
    Abstract: An apparatus for driving an optical-reflector for optical image stabilization (OIS) with a multi-axial structure includes a support frame having a first groove rail formed therein, an optical-reflector disposed on the support frame to reflect light to a lens, a middle frame having a first guide rail corresponding to the first groove rail and a second groove rail formed therein, a base frame having a second guide rail formed corresponding to the second groove rail, a first ball disposed between the first groove rail and the first guide rail, a second ball disposed between the second groove rail and the second guide rail, a first driving unit configured to move the support frame in a first direction on the basis of the middle frame, and a second driving unit configured to move the middle frame in a second direction, different from the first direction, on the basis of the base frame.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: February 18, 2020
    Assignee: JAHWA ELECTRONICS CO., LTD.
    Inventors: Jin Soo Seol, Kyoung Yong Lee, Chul Soon Park
  • Publication number: 20190243156
    Abstract: An apparatus for driving an optical system with a memory unit includes a main frame having an optical system; a base frame configured to accommodate the main frame; a driving unit configured to move the main frame in a first direction perpendicular to an optical axis with respect to the base frame; and a memory unit configured to store first reference position information that is information about a position at which the optical system is aligned in the first direction.
    Type: Application
    Filed: June 12, 2018
    Publication date: August 8, 2019
    Applicant: JAHWA electronics Co., Ltd.
    Inventors: Chul Soon PARK, Je Seung YEON, Kyoung Yong LEE, Sang Hwa LEE
  • Patent number: 10355643
    Abstract: A differential Colpitts voltage-controlled oscillator according to example embodiments includes a feedback circuit constituting a Colpitts oscillator structure, a negative resistance circuit including a first negative resistance transistor and a second negative resistance transistor cross-coupled to each other and connected to the feedback circuit, a resonance circuit including a first inductor and a variable capacitor connected to both ends of the first inductor to generate differential output signals base on outputs of the feedback circuit, and a phase noise reduction circuit coupled to the feedback circuit to remove phase noise.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 16, 2019
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Chul-Soon Park, Dong-Min Kang
  • Patent number: 10267737
    Abstract: A near-infrared fluorescent probe for detecting ALP is represented by Chemical 1. The fluorescent probe capable of detecting ALP can selectively detect ALP only quickly and accurately. In addition, the fluorescent probe allows monitoring of a biological phenomenon occurring in cells and tissues through noninvasive in-vivo imaging and during the early osteogenic differentiation in real time.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 23, 2019
    Assignee: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Chang-Soo Lee, Chul Soon Park, Oh Seok Kwon, Tai Hwan Ha