Patents by Inventor You-Sik Choi

You-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).

  • Publication number: 20230330429
    Abstract: A static magnetic field generator for treatment of cancer according to an embodiment of the present disclosure includes a static magnetic field generating unit, and a space in which a static magnetic field is formed by the static magnetic field generating unit, wherein the formed static magnetic field has a magnitude range of 0.1 mT to 4 T.
    Type: Application
    Filed: April 13, 2023
    Publication date: October 19, 2023
    Inventors: Sun Ha PAEK, You Sik CHOI, Soon Beom PARK
  • Publication number: 20170261536
    Abstract: A hybrid current sensor assembly has a conductor, Hall core, Hall sensor, shunt terminal, and a microprocessor. The conductor has a first terminating end and a second terminating end. The Hall core generates a magnetic field from current flow in the conductor. The Hall sensor measures potential difference between first terminating end and the second terminating end of the conductor based on the magnetic field applied to the Hall core. The shunt terminal is positioned on a central portion of the conductor. The microprocessor is connected to the shunt terminal to measure the current flow in the conductor.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 14, 2017
    Applicant: Tyco Electronics AMP Korea Ltd
    Inventors: Hong Il Chae, You Sik Choi, Shin Wook Kang, Young Woon Kim
  • Patent number: 9746499
    Abstract: A hybrid current sensor assembly has a conductor, Hall core, Hall sensor, shunt terminal, and a microprocessor. The conductor has a first terminating end and a second terminating end. The Hall core generates a magnetic field from current flow in the conductor. The Hall sensor measures potential difference between first terminating end and the second terminating end of the conductor based on the magnetic field applied to the Hall core. The shunt terminal is positioned on a central portion of the conductor. The microprocessor is connected to the shunt terminal to measure the current flow in the conductor.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 29, 2017
    Assignee: Tyco Electronics AMP Korea Ltd
    Inventors: Hong Il Chae, You Sik Choi, Shin Wook Kang, Young Woon Kim
  • Publication number: 20150309080
    Abstract: A hybrid current sensor assembly has a conductor, Hall core, Hall sensor, shunt terminal, and a microprocessor. The conductor has a first terminating end and a second terminating end. The Hall core generates a magnetic field from current flow in the conductor. The Hall sensor measures potential difference between first terminating end and the second terminating end of the conductor based on the magnetic field applied to the Hall core. The shunt terminal is positioned on a central portion of the conductor. The microprocessor is connected to the shunt terminal to measure the current flow in the conductor.
    Type: Application
    Filed: April 28, 2015
    Publication date: October 29, 2015
    Applicant: TYCO ELECTRONICS AMP KOREA LTD
    Inventors: Hong Il Chae, You Sik Choi, Shin Wook Kang, Young Woon Kim
  • Patent number: 8792536
    Abstract: A repeater using a digital filter is disclosed. The repeater comprises a MUX filter for filtering an RF signal received through an antenna or a signal to be transmitted through the antenna; a low noise amplifier for lowering noise of the signal filtered by the MUX filter; a down converter for converting the signal outputted from the low noise amplifier into an IF band signal to digitalize the signal; a digital filter for filtering the digital signal outputted form the down converter based on parameters inputted by a user; a filtering controller for controlling the digital filter by using a filtering coefficient calculated based on the parameters; an up converter for converting the signal filtered by the digital filter into an RF band signal; and a high power amplifier for amplifying the signal outputted from the up converter to a high power signal.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 29, 2014
    Assignee: R-Tron Inc
    Inventors: Min Kon Kwak, Sang Jun Kim, You Sik Choi, Pil Kyu Jin, Se Woong Park
  • Publication number: 20130177047
    Abstract: A repeater using a digital filter is disclosed. The repeater comprises a MUX filter for filtering an RF signal received through an antenna or a signal to be transmitted through the antenna; a low noise amplifier for lowering noise of the signal filtered by the MUX filter; a down converter for converting the signal outputted from the low noise amplifier into an IF band signal to digitalize the signal; a digital filter for filtering the digital signal outputted form the down converter based on parameters inputted by a user; a filtering controller for controlling the digital filter by using al filtering coefficient calculated based on the parameters; an up converter for converting the signal filtered by the digital filter into an RF band signal; and a high power amplifier for amplifying the signal outputted from the up converter to a high power signal.
    Type: Application
    Filed: June 19, 2012
    Publication date: July 11, 2013
    Applicant: R-TRON INC.
    Inventors: Min Kon KWAK, Sang Jun KIM, You Sik CHOI, Pil Kyu JIN, Se Woong PARK
  • Patent number: 7938024
    Abstract: A weight sensing device providing an accurate measurement of only a passenger's vertical load without an interference of moment and lateral load caused upon sudden braking and a variation in traveling conditions of a vehicle. The weight sensing device includes a sensor body having a center hole for fastening of the sensor body with a seat frame, a diaphragm provided around the center hole, a pair of fixing holes provided at opposite sides of the center hole and arranged coaxially with the center hole for fastening of the sensor body with a slide rail, supporting planes containing the fixing holes and located at opposite sides of the diaphragm, and a mounting recess defined between the diaphragm and the supporting planes, a semiconductor strain gauge and a printed circuit board attached to the diaphragm of the sensor body, and a connector electrically connected with the printed circuit board, to transmit a value output from the semiconductor strain gauge to an airbag controller.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 10, 2011
    Assignee: Tyco Electronics AMP Korea Ltd.
    Inventors: Chul-Sub Lee, Young-Deok Kim, Jin-Kwang Kim, You-Sik Choi, Seong-Jin Park, Eul-Chul Byeon, Jin-Hyuk Kwak
  • Publication number: 20090158860
    Abstract: A weight sensing device providing an accurate measurement of only a passenger's vertical load without an interference of moment and lateral load caused upon sudden braking and a variation in traveling conditions of a vehicle. The weight sensing device includes a sensor body having a center hole for fastening of the sensor body with a seat frame, a diaphragm provided around the center hole, a pair of fixing holes provided at opposite sides of the center hole and arranged coaxially with the center hole for fastening of the sensor body with a slide rail, supporting planes containing the fixing holes and located at opposite sides of the diaphragm, and a mounting recess defined between the diaphragm and the supporting planes, a semiconductor strain gauge and a printed circuit board attached to the diaphragm of the sensor body, and a connector electrically connected with the printed circuit board, to transmit a value output from the semiconductor strain gauge to an airbag controller.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 25, 2009
    Inventors: Chul-Sub Lee, Young-Deok Kim, Jin-Kwang Kim, You-Sik Choi, Seong-Jin Park, Eul-Chul Byeon, Jin-Hyuk Kwak
  • Patent number: 7330008
    Abstract: An apparatus for detecting a vehicle seat position is disclosed. The apparatus includes a hall sensor for detecting a target position according to a flux variation; a first power-supply unit for activating the hall sensor in an active period of a received drive-voltage pulse; and a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse. Therefore, the apparatus can effectively address two-pin hall sensor's problems caused by hysteresis characteristics.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: February 12, 2008
    Assignee: Tyco Electronics AMP Korea Ltd.
    Inventors: Cheol-Seob Lee, Seok-Il Kim, Dug-Su Yang, You-Sik Choi
  • Publication number: 20070215392
    Abstract: A seat weight sensor having a support frame, a fixed rail at least partially disposed above the support frame, an elastic deformation unit connected between the support frame and the fixed rail for supporting the fixed rail, and a strain gauge associated with the elastic deformation unit is disclosed.
    Type: Application
    Filed: March 16, 2007
    Publication date: September 20, 2007
    Inventors: Cheol-Sub Lee, Seok-IL Kim, Jang-Won Lee, You-Sik Choi, Seong-Jin Park
  • Publication number: 20060214402
    Abstract: An apparatus for detecting a vehicle seat position is disclosed. The apparatus includes a hall sensor for detecting a target position according to a flux variation; a first power-supply unit for activating the hall sensor in an active period of a received drive-voltage pulse; and a second power-supply unit for providing an auxiliary power-supply signal to activate the hall sensor in an inactive period of the drive-voltage pulse. Therefore, the apparatus can effectively address two-pin hall sensor's problems caused by hysteresis characteristics.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 28, 2006
    Inventors: Cheol-Seob Lee, Seok-II Kim, Dug-Su Yang, You-Sik Choi
  • Patent number: D658525
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: May 1, 2012
    Assignee: Tyco Electronics AMP Korea Ltd.
    Inventors: You-Sik Choi, Young-Woon Kim
  • Patent number: D666511
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: September 4, 2012
    Assignee: Tyco Electronics AMP Korea Ltd.
    Inventors: You-Sik Choi, Young-Woon Kim