Patents by Inventor Sang-Woon Kwak

Sang-Woon Kwak 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: 20200277555
    Abstract: The present invention provides a laundry sheet in which at least one laundry component is distributed inside a matrix formed from a water-soluble polymer, which is a polyvinyl alcohol or a polyvinyl alcohol-based polymer, and the laundry sheet has (i) a foamability of 0.5-0.9 (g/cm3) or (ii) a drape stiffness of 3.5-7.5 cm.
    Type: Application
    Filed: September 7, 2018
    Publication date: September 3, 2020
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Min-Seok CHO, Kyung-On CHA, Sang-Woon KWAK
  • Publication number: 20200160548
    Abstract: Disclosed is a method of determining a disparity of an image generated by using a multibaseline stereo camera system. The method includes determining a reference parity between a reference image and a target image among multiple images generated by using a multi-baseline stereo camera system, determining an ambiguity region in each of the multiple images on the basis of a positional relationship among the multiple images or among cameras in the multibaseline stereo camera system, and determining a disparity for each of the multiple images by determining a matching point in each of the ambiguity regions of the respective images.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Applicants: Electronics and Telecommunications Research Institute, Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Joung Il YUN, Gi Mun UM, Jin Hwan LEE, Sang Woon KWAK, Soon Yong PARK
  • Patent number: 10498560
    Abstract: Disclosed herein are an apparatus and method for providing FTN communication using transmit diversity. A transmission apparatus generates a signal to be output through diversity modulation. A diversity order of diversity modulation may be set based on an FTN parameter, such as a variable for adjusting sampling time or a symbol transmission speed. When the diversity order is set based on the FTN parameter, the FTN parameter and the diversity order may be set so as to satisfy a QoS required of the transmission apparatus, such as a transmission rate and a Bit Error Rate. Depending on the circumstances, the set FTN parameter and diversity order may be provided to a reception apparatus that is to receive the output signal.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: December 3, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung-Sun Baek, Joung-Il Yun, Sang-Woon Kwak, Hae-Chan Kwon, Young-Su Kim, Hyoung-Soo Lim, Nam-Ho Hur
  • Publication number: 20190089943
    Abstract: Disclosed is a method and apparatus for providing an omni-directional stereoscopic image based on layer projection. According to an embodiment of the present disclosure, there is provided a method of providing an omni-directional stereoscopic image based on layer projection, the method including: obtaining a spatial-information-point set; and generating a layer image based on a spatial-information-point subset constructed for each of multiple layers, the layer image corresponding to each of the multiple layers, wherein the spatial-information-point subset constructed for each of two consecutive layers includes one or more duplicate spatial information points.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 21, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Joung Il YUN, Sang Woon KWAK, Kug Jin YUN, Jin Hwan LEE, Won Sik CHEONG
  • Patent number: 10218462
    Abstract: Disclosed is an apparatus and method for supporting cooperative transmission, the apparatus including a controller configured to determine detection bits with respect to a plurality of relay terminals based on channel states between a source terminal and the plurality of relay terminals, the relay terminals configured to detect sub-data corresponding to the detection bits from data when the data is transmitted from the source terminal, an interface configured to receive the sub-data from the relay terminals, respectively, in response to the relay terminals detecting the sub-data, and a restorer configured to restore the data by combining the received sub-data.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 26, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung Sun Baek, Sang Woon Kwak, Young Su Kim, Joung Il Yun, Hyoung Soo Lim, Nam Ho Hur
  • Publication number: 20190013972
    Abstract: Disclosed herein are an apparatus and method for providing FTN communication using transmit diversity. A transmission apparatus generates a signal to be output through diversity modulation. A diversity order of diversity modulation may be set based on an FTN parameter, such as a variable for adjusting sampling time or a symbol transmission speed. When the diversity order is set based on the FTN parameter, the FTN parameter and the diversity order may be set so as to satisfy a QoS required of the transmission apparatus, such as a transmission rate and a Bit Error Rate. Depending on the circumstances, the set FTN parameter and diversity order may be provided to a reception apparatus that is to receive the output signal.
    Type: Application
    Filed: February 22, 2018
    Publication date: January 10, 2019
    Inventors: Myung-Sun BAEK, Joung-Il YUN, Sang-Woon KWAK, Hae-Chan KWON, Young-Su KIM, Hyoung-Soo LIM, Nam-Ho HUR
  • Patent number: 10142140
    Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: November 27, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joung-Il Yun, Sang-Woon Kwak, Myung-Sun Baek, Hae-Chan Kwon, Hyoung-Soo Lim, Nam-Ho Hur, Nam-Shik Kim, Bi-Woong Chung
  • Patent number: 10129051
    Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 13, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang-Woon Kwak, Joung-Il Yun, Myung-Sun Baek, Hae-Chan Kwon, Young-Su Kim, Hyoung-Soo Lim, Nam-Ho Hur
  • Publication number: 20180205578
    Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
    Type: Application
    Filed: July 25, 2017
    Publication date: July 19, 2018
    Inventors: Sang-Woon KWAK, Joung-Il YUN, Myung-Sun BAEK, Hae-Chan KWON, Young-Su KIM, Hyoung-Soo LIM, Nam-Ho HUR
  • Publication number: 20180034591
    Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
    Type: Application
    Filed: January 31, 2017
    Publication date: February 1, 2018
    Inventors: Joung-Il YUN, Sang-Woon KWAK, Myung-Sun BAEK, Hae-Chan KWON, Hyoung-Soo LIM, Nam-Ho HUR, Nam-Shik KIM, Bi-Woong CHUNG
  • Publication number: 20170346599
    Abstract: Disclosed is an apparatus and method for supporting cooperative transmission, the apparatus including a controller configured to determine detection bits with respect to a plurality of relay terminals based on channel states between a source terminal and the plurality of relay terminals, the relay terminals configured to detect sub-data corresponding to the detection bits from data when the data is transmitted from the source terminal, an interface configured to receive the sub-data from the relay terminals, respectively, in response to the relay terminals detecting the sub-data, and a restorer configured to restore the data by combining the received sub-data.
    Type: Application
    Filed: March 15, 2017
    Publication date: November 30, 2017
    Inventors: Myung Sun BAEK, Sang Woon KWAK, Young Su KIM, Joung Il YUN, Hyoung Soo LIM, Nam Ho HUR
  • Patent number: 9780975
    Abstract: A Faster-Than-Nyquist (FTN) signal transmission apparatus and method thereof. The signal transmission apparatus includes a pilot interference estimator and compensator configured to estimate interference on pilot symbols by a Faster-Than-Nyquist (FTN) signal generated by FTN modulating a sequence of data symbols, and generate a compensated pilot symbol sequence to cancel the estimated interference; a pilot FTN modulator configured to generate an FTN pilot signal in which inter-pilot symbol interference does not occur, by performing FTN pulse-shaping on the compensated pilot symbol sequence; and a transmitter configured to transmit an FTN data signal and the FTN pilot signal.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 3, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Woon Kwak, Joung Il Yun, Myung Sun Baek, Young Su Kim, Hyoung Soo Lim, Nam Ho Hur
  • Patent number: 9762286
    Abstract: Provided is an apparatus for transmitting a signal based on a non-uniform inter-symbol interference (ISI) pattern, the apparatus that may transmit an output signal generated by modulating an input signal based on a parameter sequence to be used to control an interference pattern and a position of a transmission signal for each symbol using a faster than Nyquist (FTN) scheme.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: September 12, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung-Sun Baek, Hyoungsoo Lim, Sang-Woon Kwak, Young-Su Kim, Yun-Jeong Song, Kyu-Tae Yang, Joungil Yun, Bongho Lee, Jong-Suk Chae, Nam-Ho Hur
  • Publication number: 20160218908
    Abstract: Provided is an apparatus for transmitting a signal based on a non-uniform inter-symbol interference (ISI) pattern, the apparatus that may transmit an output signal generated by modulating an input signal based on a parameter sequence to be used to control an interference pattern and a position of a transmission signal for each symbol using a faster than Nyquist (FTN) scheme.
    Type: Application
    Filed: January 27, 2016
    Publication date: July 28, 2016
    Inventors: Myung-Sun BAEK, Hyoungsoo LIM, Sang-Woon KWAK, Young-Su KIM, Yun-Jeong SONG, Kyu-Tae YANG, Joungil YUN, Bongho LEE, Jong-Suk CHAE, Nam-Ho HUR
  • Patent number: 8420589
    Abstract: Disclosed is a composition for textile softener containing a cationic surfactant, the ratio of which C7-C21 alkyl substituents analyzed by HLPC (high pressure liquid chromatography) or GC (gas chromatography) is 0.6 or more, as an effective ingredient, a sheet for textile softener including the same, and method of softening a textile using the sheet. Since the composition for textile softener has excellent dissolving and dispersing effect even in low temperature water, the sheet containing this composition is used at a rinse time during washing procedures to represent excellent anti-static effect and textile softening effect to textiles and clothes.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: April 16, 2013
    Assignee: LG Household & Health Care Ltd
    Inventors: Joo-Young Kang, Sang-Woon Kwak
  • Publication number: 20120309668
    Abstract: Disclosed is a composition for textile softener containing a cationic surfactant, the ratio of which C7-C21 alkyl substituents analyzed by HLPC (high pressure liquid chromatography) or GC (gas chromatography) is 0.6 or more, as an effective ingredient, a sheet for textile softener including the same, and method of softening a textile using the sheet. Since the composition for textile softener has excellent dissolving and dispersing effect even in low temperature water, the sheet containing this composition is used at a rinse time during washing procedures to represent excellent anti-static effect and textile softening effect to textiles and clothes.
    Type: Application
    Filed: August 14, 2012
    Publication date: December 6, 2012
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Joo-Young KANG, Sang-Woon KWAK
  • Publication number: 20110218136
    Abstract: The present invention relates to powder detergent granules that are substantially free of a water-insoluble component such as zeolite or silica, a method for manufacturing the powder detergent granules and a copolymer having various properties useful as a detergent component. The powder detergent granules of the present invention are substantially free of a water-insoluble component, and thus exhibit good solubility and washing performance (stain removal performance) in cold water, do not leave residue after laundry, and reduce the likelihood of a caking phenomenon during manufacture and storage. And, the powder detergent granules of the present invention are substantially free of zeolite or silica that absorbs a liquid component, but are capable of accommodating a considerable amount of liquid surfactant.
    Type: Application
    Filed: March 11, 2011
    Publication date: September 8, 2011
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Min-Seok Cho, Young-Kee Oh, Kee-Heon Cho, Hyun-Chang Kim, Sang-Woon Kwak
  • Patent number: 7928047
    Abstract: The present invention relates to powder detergent granules that are substantially free of a water-insoluble component such as zeolite or silica, a method for manufacturing the powder detergent granules and a copolymer having various properties useful as a detergent component. The powder detergent granules of the present invention are substantially free of a water-insoluble component, and thus exhibit good solubility and washing performance (stain removal performance) in cold water, do not leave residue after laundry, and reduce the likelihood of a caking phenomenon during manufacture and storage. And, the powder detergent granules of the present invention are substantially free of zeolite or silica that absorbs a liquid component, but are capable of accommodating a considerable amount of liquid surfactant.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: April 19, 2011
    Assignee: LG Household & Health Care Ltd.
    Inventors: Min-Seok Cho, Young-Kee Oh, Kee-Heon Cho, Hyun-Chang Kim, Sang-Woon Kwak
  • Publication number: 20100137185
    Abstract: The present invention relates to powder detergent granules that are substantially free of a water-insoluble component such as zeolite or silica, a method for manufacturing the powder detergent granules and a copolymer having various properties useful as a detergent component. The powder detergent granules of the present invention are substantially free of a water-insoluble component, and thus exhibit good solubility and washing performance (stain removal performance) in cold water, do not leave residue after laundry, and reduce the likelihood of a caking phenomenon during manufacture and storage. And, the powder detergent granules of the present invention are substantially free of zeolite or silica that absorbs a liquid component, but are capable of accommodating a considerable amount of liquid surfactant.
    Type: Application
    Filed: February 4, 2010
    Publication date: June 3, 2010
    Inventors: Min-Seok Cho, Young-Kee Oh, Kee-Heon Cho, Hyun-Chang Kim, Sang-Woon Kwak
  • Publication number: 20100113325
    Abstract: The present invention relates to a composition for textile softener comprising a cationic surfactant, the ratio of which C7-C21 alkyl substituents analyzed by HLPC (high pressure liquid chromatography) or GC (gas chromatography) is 0.6 or more, as an effective ingredient, and a sheet for textile softener comprising the same. Since the present composition for textile softener has excellent dissolving and dispersing effect even in low temperature water, the sheet comprising this composition is used at a rinse time during washing procedures to represent excellent anti-static effect and textile softening effect to textiles and clothes.
    Type: Application
    Filed: July 19, 2007
    Publication date: May 6, 2010
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Joo-Young Kang, Sang-Woon Kwak