Patents by Inventor Dae-Kun Yoon

Dae-Kun Yoon 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: 9588238
    Abstract: An X-ray detector may include a silicon substrate including a first area and a second area; a plurality of pixels in the first area configured to detect X-rays; a control pad in the second area configured to supply a common control signal to the plurality of pixels; and/or a power supply pad in the first area configured to supply a power supply voltage to groups of pixels grouped from among the plurality of pixels.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 7, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Kim, Jun-su Lee, Sun-il Kim, Jae-chul Park, Dae-kun Yoon, Sang-wook Han
  • Patent number: 9577645
    Abstract: A driver circuit outputs a result of classifying and counting photons based on one or more energy levels to a column line. The driver circuit includes a multiplexer for receiving the result from a counter, a driving inverter for receiving a signal from the multiplexer and a power supply, and a switch connected between the power supply and an input terminal of the driving inverter.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: February 21, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-kun Yoon, Young Kim, Chae-hun Lee, Chang-jung Kim, Jae-chul Park
  • Patent number: 9411055
    Abstract: A photon-counting detector configured to detect photons included in multi-energy radiation. The photon-counting detector includes a pixel area configured to absorb photons incident thereto, and bias circuits configured to supply one of a bias voltage and a bias current to electronic devices in the pixel area, wherein the bias circuits are in the pixel area.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 9, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-kun Yoon, Chang-jung Kim
  • Patent number: 9086324
    Abstract: A photomultiplier detector cell for tomography includes a detector unit and a readOUT unit. The detector unit is configured to generate a digitized detect signal in response to receives light having a certain range of wavelength. The readOUT unit is configured to generate an output signal corresponding to the detect signal generated by the detector unit and to transmit the output signal to an external circuit. The readOUT unit is configured to transmit the output signal to the external circuit right after the detect signal is received.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: July 21, 2015
    Assignees: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY
    Inventors: Young Kim, Jae-chul Park, Dae-kun Yoon, Chae-hun Lee, Jin-wook Burm, Kyung-hoon Kim, Jun-an Lee
  • Patent number: 8985853
    Abstract: A method of calibrating a first threshold voltage that is a reference of X-ray detection for each unit cell of a plurality of unit cells of an X-ray detector may comprise detecting an X-ray by using a plurality of second threshold voltages for each of a plurality of X-rays having spectra at different energy levels; determining a correspondence relationship between energies having a maximum intensity in the spectra of X-rays and third threshold voltages at which a maximum number of photons having a same energy intensity are detected; and/or calibrating the first threshold voltage based on the determined correspondence relationship.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 24, 2015
    Assignees: Samsung Electronics Co., Ltd., Pusan National University Industry-University Cooperation Foundation
    Inventors: Chae-hun Lee, Jae-chul Park, Young Kim, Ho Kyung Kim, Dae-kun Yoon
  • Publication number: 20140368248
    Abstract: A flip-flop circuit includes a first unit configured to receive a reference clock signal and a reset signal, and a second unit configured to change an output node to a first level in response to the reference clock signal and change the output node to a second level by precharging the output node in response to a signal output from the first unit according to the reset signal.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Inventors: Dae-Kun YOON, Taek-Sang SONG
  • Patent number: 8836397
    Abstract: A duty ratio correction circuit includes a duty cycle ratio controlling unit configured to generate an internal clock signal having a duty cycle ratio defined according to a first reference clock signal and a reset signal and a reset signal generating unit configured to generate the reset signal in response to a second reference clock signal and the internal clock signal fed back thereto.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: September 16, 2014
    Assignee: SK Hynix Inc.
    Inventors: Dae-Kun Yoon, Taek-Sang Song
  • Publication number: 20140158900
    Abstract: A photon-counting detector configured to detect photons included in multi-energy radiation. The photon-counting detector includes a pixel area configured to absorb photons incident thereto, and bias circuits configured to supply one of a bias voltage and a bias current to electronic devices in the pixel area, wherein the bias circuits are in the pixel area.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-kun YOON, Chang-jung KIM
  • Publication number: 20140119517
    Abstract: A method of calibrating a first threshold voltage that is a reference of X-ray detection for each unit cell of a plurality of unit cells of an X-ray detector may comprise detecting an X-ray by using a plurality of second threshold voltages for each of a plurality of X-rays having spectra at different energy levels; determining a correspondence relationship between energies having a maximum intensity in the spectra of X-rays and third threshold voltages at which a maximum number of photons having a same energy intensity are detected; and/or calibrating the first threshold voltage based on the determined correspondence relationship.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 1, 2014
    Applicants: Pusan National University Industry-University Corporation Foundation, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chae-hun LEE, Jae-chul PARK, Young KIM, Ho Kyung KIM, Dae-kun YOON
  • Publication number: 20140117202
    Abstract: A driver circuit outputs a result of classifying and counting photons based on one or more energy levels to a column line. The driver circuit includes a multiplexer for receiving the result from a counter, a driving inverter for receiving a signal from the multiplexer and a power supply, and a switch connected between the power supply and an input terminal of the driving inverter.
    Type: Application
    Filed: May 15, 2013
    Publication date: May 1, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-kun YOON, Young KIM, Chae-hun LEE, Chang-jung KIM, Jae-chul PARK
  • Patent number: 8570109
    Abstract: A ring oscillator including a plurality of buffer units, each of which has a cross-coupled structure, for generating clock signals using a bias voltage having a predetermined voltage level applied thereto, wherein the clock signals have a swing width corresponding to the bias voltage.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: October 29, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Taek-Sang Song, Dae-Han Kwon, Dae-Kun Yoon
  • Publication number: 20130256545
    Abstract: An X-ray detector may include a silicon substrate including a first area and a second area; a plurality of pixels in the first area configured to detect X-rays; a control pad in the second area configured to supply a common control signal to the plurality of pixels; and/or a power supply pad in the first area configured to supply a power supply voltage to groups of pixels grouped from among the plurality of pixels.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 3, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young KIM, Jun-su LEE, Sun-il KIM, Jae-chul PARK, Dae-kun YOON, Sang-wook HAN
  • Publication number: 20130248720
    Abstract: According to example embodiments, a photomultiplier detector cell for tomography includes a detector unit and a readOUT unit. The detector unit is configured to generate a digitized detect signal in response to receives light having a certain range of wavelength. The readOUT unit is configured to generate an output signal corresponding to the detect signal generated by the detector unit and to transmit the output signal to an external circuit. The readOUT unit is configured to transmit the output signal to the external circuit right after the detect signal is received.
    Type: Application
    Filed: February 11, 2013
    Publication date: September 26, 2013
    Applicants: Industry-University Cooperation Foundation Sogang University, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young KIM, Jae-chul PARK, Dae-kun YOON, Chae-hun LEE, Jin-wook BURM, Kyung-hoon KIM, Jun-an LEE
  • Publication number: 20130175431
    Abstract: A detector includes a substrate; two first regions, each first region having a linear shape, and the two first regions being separated from each other on the substrate and arranged in parallel; and a pixel region provided between the two first regions and including a plurality of pixels, the pixel region including a plurality of second regions perpendicular to the two first regions, each of the two first regions including a peripheral circuit portion, each of the plurality of second regions including a driver line, and a width of each of the plurality of second regions being equal to or less than a width of a single pixel.
    Type: Application
    Filed: August 7, 2012
    Publication date: July 11, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-kun YOON, Young KIM, Jae-chul PARK, Sang-wook HAN, Sun-il KIM, Chang-jung KIM, Jun-su LEE
  • Patent number: 8283962
    Abstract: A semiconductor memory device can optimize the layout area and current consumption based on multi-phase clock signals which are generated by dividing a source clock signal using a reset signal without a delay locked loop and a phase locked loop in order to have various phase information of low frequencies and different activation timings with a constant phase difference.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: October 9, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Dae-Han Kwon, Kyung-Hoon Kim, Dae-Kun Yoon, Taek-Sang Song
  • Patent number: 8253465
    Abstract: A semiconductor memory device includes an edge detector configured to receive two pairs of complementary clocks to detect edges of the clocks, a comparator configured to compare output signals of the edge detector to detect whether clocks of the same pair have a phase difference of 180 degrees and detect whether clocks of different pairs have a phase difference of 90 degrees, a control signal generator configured to generate a control signal for controlling phases of the clocks according to an output signal of the comparator, and a phase corrector configured to correct phases of the clocks in response to the control signal.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: August 28, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Dae-Kun Yoon, Dae-Han Kwon, Taek-Sang Song
  • Publication number: 20110273937
    Abstract: A semiconductor memory device includes an edge detector configured to receive two pairs of complementary clocks to detect edges of the clocks, a comparator configured to compare output signals of the edge detector to detect whether clocks of the same pair have a phase difference of 180 degrees and detect whether clocks of different pairs have a phase difference of 90 degrees, a control signal generator configured to generate a control signal for controlling phases of the clocks according to an output signal of the comparator, and a phase corrector configured to correct phases of the clocks in response to the control signal.
    Type: Application
    Filed: July 19, 2011
    Publication date: November 10, 2011
    Inventors: Dae-Kun YOON, Dae-Han KWON, Taek-Sang SONG
  • Patent number: 8004336
    Abstract: A semiconductor memory device includes an edge detector configured to receive two pairs of complementary clocks to detect edges of the clocks, a comparator configured to compare output signals of the edge detector to detect whether clocks of the same pair have a phase difference of 180 degrees and detect whether clocks of different pairs have a phase difference of 90 degrees, a control signal generator configured to generate a control signal for controlling phases of the clocks according to an output signal of the comparator, and a phase corrector configured to correct phases of the clocks in response to the control signal.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: August 23, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Dae-Kun Yoon, Dae-Han Kwon, Taek-Sang Song
  • Publication number: 20110181332
    Abstract: A ring oscillator including a plurality of buffer units, each of which has a cross-coupled structure, for generating clock signals using a bias voltage having a predetermined voltage level applied thereto, wherein the clock signals have a swing width corresponding to the bias voltage.
    Type: Application
    Filed: April 6, 2011
    Publication date: July 28, 2011
    Inventors: Taek-Sang SONG, Dae-Han Kwon, Dae-Kun Yoon
  • Patent number: 7876148
    Abstract: A low pass filter includes a driver unit configured to output a voltage proportional to an input pulse width, a charge/discharge unit configured to charge the output voltage of the driver unit, a comparator unit configured to compare an output voltage of the charge/discharge unit with a reference value to output a square wave signal, and a switching unit configured to switch the charge/discharge unit to an operation state, based on a bandwidth expansion signal.
    Type: Grant
    Filed: December 28, 2008
    Date of Patent: January 25, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Taek-Sang Song, Kyung-Hoon Kim, Dae-Han Kwon, Dae-Kun Yoon