Patents by Inventor Chang-Hoon Choi

Chang-Hoon 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: 10122383
    Abstract: A channel decoding method is provided. The method includes storing, in a memory, a set of first log likelihood ratio (LLR) values corresponding to bits of a codeword generated by modulation of a channel-encoded signal; changing, into a preset value, at least one LLR value corresponding to previously defined bits of the codeword from among the set of the first LLR values, to generate a set of second LLR values; and performing forward error correction (FEC) based on the set of the second LLR values and an FEC code, to estimate the bits of the codeword, in which the FEC code comprises a constraint code for constricting a previously defined structural correlation between the bits of the codeword.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Sung-kyu Jung, Chang-hoon Choi
  • Publication number: 20180241599
    Abstract: A receiving apparatus includes: a first decoder configured to decode a signal transmitted through a first layer from a layered division multiplexing (LDM) signal using a parity check matrix to generate low density parity check (LDPC) information word bits and parity bits; an encoder configured to encode the LDPC information word bits, generated by decoding the signal transmitted through the first layer, using the parity check matrix to generate parity bits corresponding only to preset columns in the parity check matrix; and a second decoder configured to decode a signal obtained by removing, from the LDM signal, a signal corresponding to the LDPC information word bits generated by decoding the signal transmitted through the first layer, the parity bits generated by the encoder, and the parity bits generated by the first decoder except the parity bits generated by the encoder, thereby to generate information word bits transmitted through a second layer.
    Type: Application
    Filed: April 19, 2018
    Publication date: August 23, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun PARK, Jung-pil YU, Sung-kyu JUNG, Chang-hoon CHOI
  • Publication number: 20180241790
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun PARK, Min-ho KIM, Sung-woo PARK, Sung-kyu JUNG, Chang-hoon CHOI, Doo-chan HWANG
  • Patent number: 9954917
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 24, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Park, Min-ho Kim, Sung-woo Park, Sung-kyu Jung, Chang-hoon Choi, Doo-chan Hwang
  • Publication number: 20180098748
    Abstract: Disclosed is a laser-induced thermal strain imaging system and method using an implantable medical device, and the implantable medical device for laser-induced thermal strain imaging, the system including: a light source module emitting a laser beam; a light concentrating module concentrating the laser beam emitted from the light source module through an objective lens so as to enable the laser beam to enter an optical fiber; an ultrasound signal obtaining module provided with a scanning stage and the device, the ultrasound signal obtaining module emitting the laser beam received through the optical fiber to an image area and obtaining an ultrasound signal generated from the area; a pulse generating and ultrasound signal receiving module generating an ultrasound pulse being transmitted to the ultrasound signal obtaining module, and receiving and amplifying the signal; and a data obtaining module obtaining a thermal strain image through an algorithm by using the signal.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 12, 2018
    Inventors: Chul-Hong KIM, Seong-Hee CHO, Sung-Jo PARK, Chang-Hoon CHOI
  • Publication number: 20180096708
    Abstract: A video editing system is provided. The video editing system according to one embodiment of the present invention includes a second server configured to transmit editing information, which corresponds to video information provided from a first server to a client terminal, to the client terminal, wherein the editing information is applied to the video information in the client terminal.
    Type: Application
    Filed: October 27, 2016
    Publication date: April 5, 2018
    Inventors: Chang Hoon CHOI, Yoon Soo Lee
  • Publication number: 20180051252
    Abstract: The present disclosure relates to luterial, which is a mitochondrial-like unidentified nano-sized particle derived from a body fluid, and to a method for isolating the same.
    Type: Application
    Filed: June 26, 2017
    Publication date: February 22, 2018
    Inventors: Won Cheol Choi, Young Ah Kwon, Suk Hoon Choi, Chang Hoon Choi
  • Patent number: 9897486
    Abstract: A method of calibrating a measuring apparatus includes determining apparatus parameters that have an influence on a measurement spectrum generated by the measuring apparatus, generating the measurement spectrum by exposing a measurement target on a sample to light generated by the measuring apparatus, calculating an error of the apparatus parameters by comparing the measurement spectrum to an ideal spectrum corresponding to the apparatus parameters, and calibrating the measuring apparatus based on the calculated error of the apparatus parameters.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-Yong Jo, Young-Joo Lee, Chang-Hoon Choi, Jong-Jeong Kim
  • Publication number: 20170361243
    Abstract: The present disclosure relates to luterion, which is a mitochondrial-like micro-material, and separating and culturing methods for same and, more particularly, to a method for separating luterion by means of a filter having a pore of a particular size, luterion which is separated by means of the method thereof and has unique properties, and a culturing method for proliferation of the luterion.
    Type: Application
    Filed: January 6, 2016
    Publication date: December 21, 2017
    Inventors: Young Ah Kwon, Won Cheol Choi, Suk Hoon Choi, Chang Hoon Choi
  • Publication number: 20170359147
    Abstract: A channel decoding method is provided. The method includes storing, in a memory, a set of first log likelihood ratio (LLR) values corresponding to bits of a codeword generated by modulation of a channel-encoded signal; changing, into a preset value, at least one LLR value corresponding to previously defined bits of the codeword from among the set of the first LLR values, to generate a set of second LLR values; and performing forward error correction (FEC) based on the set of the second LLR values and an FEC code, to estimate the bits of the codeword, in which the FEC code comprises a constraint code for constricting a previously defined structural correlation between the bits of the codeword.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventors: Jung-hyun PARK, Sung-kyu JUNG, Chang-hoon CHOI
  • Publication number: 20170328771
    Abstract: A method of calibrating a measuring apparatus includes determining apparatus parameters that have an influence on a measurement spectrum generated by the measuring apparatus, generating the measurement spectrum by exposing a measurement target on a sample to light generated by the measuring apparatus, calculating an error of the apparatus parameters by comparing the measurement spectrum to an ideal spectrum corresponding to the apparatus parameters, and calibrating the measuring apparatus based on the calculated error of the apparatus parameters.
    Type: Application
    Filed: January 10, 2017
    Publication date: November 16, 2017
    Inventors: Tae-Yong JO, Young-Joo LEE, Chang-Hoon CHOI, Jong-Jeong KIM
  • Patent number: 9746430
    Abstract: An optical inspecting apparatus includes a first light source, a beam splitter, a first lens, a first light detector, and pinhole plates. The first light source emits a first light beam. The beam splitter transmits or reflects the first light beam. The first lens provides the first light beam to transmit through a transparent substrate of a photomask and forms a first focusing spot on a first surface of the transparent substrate or a top surface of a photomask pattern formed on the transparent substrate. The first light detector detects a first reflection light beam generated by reflecting the first light beam from the first surface of the transparent substrate or the top surface of the photomask pattern. The pinhole plates are disposed in front of the first light detector to filter noise in the reflection light beam.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: August 29, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-Joong Kim, Young-Kyu Park, Ki-Jung Son, Byeong-Hwan Jeon, Chang-Hoon Choi
  • Patent number: 9702826
    Abstract: A method of inspecting a surface of an object includes providing a laser beam irradiated in a first direction substantially parallel to the surface of the object, adjusting a diameter of the annular laser beam, reflecting the annular laser beam toward the surface of the object in a second direction substantially perpendicular to the first direction, in a primary reflection, and reflecting the primarily reflected laser toward an inspection region of the object, in a secondary reflection. An incident angle of the annular laser beam with respect to the surface of the object may be determined by the diameter of the annular laser beam.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: July 11, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kohei Hashimoto, Wook-Rae Kim, Byeong-Hwan Jeon, Chang-Hoon Choi
  • Patent number: 9683294
    Abstract: A conversion coating composition comprising 0.01 wt % to 0.2 wt % of phosphorous (P); 0.01 wt % to 0.2 wt % of magnesium (Mg); 0.005 wt % to 0.15 wt % of zirconium (Zr); 0.005 wt % to 0.15 wt % of titanium (Ti); 0.005 wt % to 0.15 wt % of vanadium (V); 0.05 wt % to 1 wt % of phenol resin; the balance of water and other unavoidable impurities is provided. A surface treated steel sheet comprising a base steel sheet; a zinc or zinc alloy plated layer formed on the base steel sheet; a blackening layer formed on the zinc or zinc alloy plated layer; and an organic and inorganic complex conversion coating layer formed on the blackening layer, wherein the organic and inorganic complex conversion coating layer may satisfy the weight ratio of P:Mg:Zr:Ti:V=1:0.045 to 2:0.035 to 1.5:0.035 to 1.3:0.035 to 1.5 (based on the weight of P) is also provided. A method for manufacturing a steel sheet treated with the conversion coating composition is also provided.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 20, 2017
    Assignee: POSCO
    Inventors: Yeon-Ho Kim, Young-Jin Kwak, Yon-Kyun Song, Yang-Ho Choi, Tae-Yeob Kim, Kyoung-Pil Ko, Chang-Hoon Choi, Jong-Sang Kim
  • Publication number: 20170026432
    Abstract: A transmitting apparatus is provided. The transmitting apparatus includes: an L1 signaling generator configured to generate L1 signaling including first information and second information; a frame generator configured to generate a frame including a payload including a plurality of sub frames; and a signal processor configured to insert a preamble including the L1 signaling in the frame and transmit the frame. The first information includes information required for decoding a first sub frame among the plurality of sub frames. Therefore, a processing delay in a receiving apparatus is reduced.
    Type: Application
    Filed: July 22, 2016
    Publication date: January 26, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun PARK, Min-ho KIM, Sung-woo PARK, Sung-kyu JUNG, Chang-hoon CHOI, Doo-chan HWANG
  • Publication number: 20160334389
    Abstract: The present invention relates to a method for screening an anticancer agent or a cancer preventive agent, comprising the steps of: (a) isolating mutant luterial or normal luterial from a body fluid extracted from a patient or a normal person; (b) treating the isolated mutant luterial with anticancer agent candidates or cancer preventive agent candidates; and (c) either selecting, as the anticancer agent, a candidate that reduces the size or changes the shape or increases the mobility of the mutant luterial, compared to the control mutant luterial upon treatment with the candidate, or selecting, as the cancer preventive agent, a candidate that suppresses the increase in size, minimizes the change in shape or maintains the mobility of luterial, compared to the control luterial, upon treatment with the candidate.
    Type: Application
    Filed: January 14, 2015
    Publication date: November 17, 2016
    Inventors: Won Cheol CHOI, Young Ah KWON, Suk Hoon CHOI, Chang Hoon CHOI
  • Publication number: 20160324896
    Abstract: The present invention relates to blood-derived luterial and a method for isolating and culturing the same. The luterial according to the present invention is a cell or cell-like structure having the following characteristics: (1) it is present in body fluids, including blood, sperm, intestinal juices, saliva, and cellular fluids; (2) it shows a positive staining with Janus green B, Acridine Orange and Rhodamine 123 in an immunofluorescence test; (3) in an optimal environment (pH 7.2-7.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 10, 2016
    Inventors: Won Cheol CHOI, Young Ah KWON, Suk Hoon Choi, Chang Hoon Choi
  • Patent number: D814080
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Ji-Won Ha, Chang-Hoon Choi, Ki-Euk Kim
  • Patent number: D814081
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Ji-Won Ha, Chang-Hoon Choi, Ki-Euk Kim
  • Patent number: D814082
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 27, 2018
    Assignee: Hyundai Motor Company
    Inventors: Ji-Won Ha, Chang-Hoon Choi, Ki-Euk Kim