Patents by Inventor Byung-Jae Kwak

Byung-Jae 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: 20200217812
    Abstract: Provided are an excreta detection device that is for a diaper and capable of detecting excreta present in the diaper, and an excreta detection reader for transmitting and receiving signals to and from the excreta detection device for the diaper and notifying a user about whether excreta is present. Since the large scale of a resonant frequency is determined on the basis of a capacitor which is isolated from the excreta and not affected by the excreta and the small scale of the resonant frequency that changes due to the excreta may be determined on the basis of a capacitor having a permittivity that changes due to the excreta, the excreta may be detected even when a relatively narrow frequency band is swept. In addition, since excreta sensing is not performed at only a specific resonant frequency but is also performed by comparing resonant frequencies before and after discharge of excreta, the excreta sensing can be performed regardless of the state of the excreta.
    Type: Application
    Filed: June 28, 2018
    Publication date: July 9, 2020
    Inventor: Byung Jae Kwak
  • Patent number: 10644751
    Abstract: A coexistence communication method for broadband power line communication that allocates a resource of another heterogeneous system to a blank resource in data where a plurality of heterogeneous systems are allocated to time division multiplex units (TDMUs) in a distribution scheme and a system therefor are provided. The method includes detecting a blank resource according to a heterogeneous system which does not share a power line among a plurality of heterogeneous systems, from data in which the plurality of heterogeneous systems which share the power line to perform power line communication are allocated to a plurality of TDMUs and in which each TDMU is allocated to a plurality of time division multiplex slots (TDMSs) sorted over time in a distribution scheme and allocating added another heterogeneous system to the blank resource.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: May 5, 2020
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Nah-Oak Song, Byung-Jae Kwak
  • Patent number: 10573633
    Abstract: A semiconductor device includes a first overlay group and a second overlay group disposed on a semiconductor substrate. The first overlay group includes first lower overlay patterns which extend in a first direction, first upper overlay patterns overlapping the first lower overlay patterns, and first via overlay patterns interposed between the first lower overlay patterns and the first upper overlay patterns. The second overlay group includes second lower overlay patterns which extend in a second direction, second upper overlay patterns overlapping the second lower overlay patterns, and second via overlay patterns interposed between the second lower overlay patterns and the second upper overlay patterns. The second lower overlay patterns include end portions adjacent to and spaced apart from the first overlay group.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: February 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae Sun Kim, Hyun Jae Kang, Tae Hoi Park, Jin Seong Lee, Eun Sol Choi, Min Keun Kwak, Byung Kap Kim, Sung Won Choi
  • Publication number: 20200021332
    Abstract: A coexistence communication method for broadband power line communication that allocates a resource of another heterogeneous system to a blank resource in data where a plurality of heterogeneous systems are allocated to time division multiplex units (TDMUs) in a distribution scheme and a system therefor are provided. The method includes detecting a blank resource according to a heterogeneous system which does not share a power line among a plurality of heterogeneous systems, from data in which the plurality of heterogeneous systems which share the power line to perform power line communication are allocated to a plurality of TDMUs and in which each TDMU is allocated to a plurality of time division multiplex slots (TDMSs) sorted over time in a distribution scheme and allocating added another heterogeneous system to the blank resource.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 16, 2020
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Nah-Oak Song, Byung-Jae Kwak
  • Patent number: 10237905
    Abstract: A first terminal generates a first scheduling request signal including information about first data resources for data transmission when the first terminal tries to reserve the first data resources. The first terminal generates a first scheduling request indication signal providing notification that the first scheduling request signal is to be transmitted. The first terminal transmits the first scheduling request indication signal through a first request subslot included in a first scheduling request resource before transmitting the first scheduling request signal. The first terminal transmits the first scheduling request signal through a second request subslot included in the first scheduling request resource.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: March 19, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kapseok Chang, Byung-Jae Kwak
  • Patent number: 10038517
    Abstract: A method and apparatus for generating a secret key includes: acquiring a random sequence by use of reciprocity of a radio channel; generating the secret key based on the random sequence; and stopping generating the secret key when it is determined that the radio channel is flat based on flatness measured from the radio channel.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: July 31, 2018
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byung-Jae Kwak, Jeongseok Ha, Sanghun Im, Sangseok Yun
  • Patent number: 10039068
    Abstract: A method of synchronization in a distributed wireless communication system and a terminal supporting the same are disclosed. A terminal increases its contention window value if it receives a synchronization signal within a synchronization slot. The terminal decreases its contention window value if it receives no synchronization signal within the synchronization slot. The terminal determines whether to transmit a synchronization signal or not by using the increased or decreased contention window value.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: July 31, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Jae Kwak, Kapseok Chang, June-Koo Rhee, Junhyuk Kim
  • Patent number: 9974056
    Abstract: When a transmitter transmits a first Timing Offset Indication iDentifier (TOID) of a plurality of TOIDs representing timing offset of a frame, the transmitter determines a first codeword corresponding to the first TOID of a plurality of codewords representing a subcarrier. The transmitter allocates a busy tone to a first subcarrier that the first codeword represents. The transmitter transmits the busy tone.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: May 15, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kapseok Chang, Byung-Jae Kwak
  • Patent number: 9954754
    Abstract: Provided are a random access method and a terminal supporting the random access method. The terminal may monitor a state of a channel, when the state of the channel is idle, attempt a packet transmission at a first packet transmission probability, and transmit a packet including the first packet transmission probability.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 24, 2018
    Assignees: Electronics and Telecommunications Research Institute, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byung-Jae Kwak, June-Koo Rhee, Junhyuk Kim, Kyounghye Kim
  • Patent number: 9860102
    Abstract: Disclosed is a method for transmitting signal in a communication system. A method for transmitting signal comprises generating a short training field (STF) comprising a cyclic prefix (CP) and an effective symbol period including four RP regions; generating a long training field (LTF) comprising a cyclic prefix (CP) and an effective symbol period including two RP regions; generating a frame comprising the STF and the LTF; and transmitting the frame. Thus, efficiency of the communication system may be enhanced by using the method.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: January 2, 2018
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kap Seok Chang, Byung Jae Kwak, Moon Sik Lee
  • Patent number: 9860864
    Abstract: Disclosed herein are a method of performing synchronization in a distributed wireless communication system, and a terminal supporting the same. A distributed wireless communication system includes a plurality of networks. Time resources of each of a plurality of networks are divided into a synchronization slot, a discovery slot, a peering slot, and a data slot. A first terminal belonging to a first network determines whether a synchronization signal is received from a terminal belonging to a second network in the data slot of the first network. The first terminal detects whether it has met the second network that is out of synchronization with the first network if the synchronization signal is determined to have been received.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: January 2, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Jae Kwak, Kapseok Chang, June-Koo Rhee, Junhyuk Kim
  • Patent number: 9781559
    Abstract: A method for a communication link establishing device to establish a communication link in a targeted communication system is provided. A source terminal transmits a source terminal's identification information and threshold value information for selecting a relative angle measurement target to neighboring terminals including a target terminal, and transmits a relative angle measurement request signal to the target terminal and the neighboring terminals. Upon receipt of a response signal for the relative angle measurement request signal from at least one of the neighboring terminals including the target terminal, a communication link with the selected communication target's terminal is established based on the information contained in the response signal.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: October 3, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young-Hoon Kim, Seon-Ae Kim, Soo Chang Kim, Byung-Jae Kwak, Seung Chan Bang
  • Patent number: 9699747
    Abstract: Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: July 4, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Jae Kwak, Kapseok Chang, June-Koo Rhee, Junhyuk Kim, Kyounghye Kim
  • Publication number: 20170156143
    Abstract: A first terminal generates a first scheduling request signal including information about first data resources for data transmission when the first terminal tries to reserve the first data resources. The first terminal generates a first scheduling request indication signal providing notification that the first scheduling request signal is to be transmitted. The first terminal transmits the first scheduling request indication signal through a first request subslot included in a first scheduling request resource before transmitting the first scheduling request signal. The first terminal transmits the first scheduling request signal through a second request subslot included in the first scheduling request resource.
    Type: Application
    Filed: May 5, 2015
    Publication date: June 1, 2017
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTIT UTE
    Inventors: Kapseok CHANG, Byung-Jae KWAK
  • Patent number: 9503838
    Abstract: A method and system for communicating between devices according to the present invention are provided. The method for communicating between the devices according to the present invention is used for communicating with a first terminal, and is carried out in a device having a capacitive touch screen. The method includes: detecting a change in capacitance for a specific part of the capacitive touch screen, which occurs by means of the first terminal; and acquiring information transferred from the first terminal on the basis of the detected change in capacitance of the capacitive touch screen. The communicating method using such a touch screen may be easily used for various services such as authenticating terminals or transferring files between local terminals.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: November 22, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Geun Jin, Jin Kyeong Kim, Woo Young Lee, Ki Chul Han, Hyun Kyu Chung, Byung Jae Kwak
  • Publication number: 20160337122
    Abstract: A method and apparatus for generating a secret key includes: acquiring a random sequence by use of reciprocity of a radio channel; generating the secret key based on the random sequence; and stopping generating the secret key when it is determined that the radio channel is flat based on flatness measured from the radio channel.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 17, 2016
    Inventors: Byung-Jae KWAK, Jeongseok HA, Sanghun IM, Sangseok YUN
  • Patent number: 9413441
    Abstract: An apparatus for spatial filtering receives a signal transmitted from a first terminal and detects a synchronization start point in time from a transmission frame included in the signal. The apparatus for spatial filtering demodulates a user-defined sequence included in the transmission frame and the at least one SRJBF sequence when the synchronization start point in time is detected, and then estimates a relative angle based on the demodulated user-defined sequence and SRJBF sequence.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: August 9, 2016
    Assignee: Electronics and Telecommunications Research Instit
    Inventors: Seon-Ae Kim, Young-Hoon Kim, Byung-Jae Kwak, Soo Chang Kim, Seung Chan Bang, Moon-Sik Lee
  • Patent number: 9407486
    Abstract: A method and apparatus for generating a signal in a wireless communication system by allocating a sequence to a plurality of subcarriers for sending the signal and generating the signal based on the sequence and a phase rotation sequence are provided.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 2, 2016
    Assignee: Electronics and Telecommunications Research Instit
    Inventors: Kapseok Chang, Byung-Jae Kwak
  • Publication number: 20160157284
    Abstract: A method for a communication link establishing device to establish a communication link in a targeted communication system is provided. A source terminal transmits a source terminal's identification information and threshold value information for selecting a relative angle measurement target to neighboring terminals including a target terminal, and transmits a relative angle measurement request signal to the target terminal and the neighboring terminals. Upon receipt of a response signal for the relative angle measurement request signal from at least one of the neighboring terminals including the target terminal, a communication link with the selected communication target's terminal is established based on the information contained in the response signal.
    Type: Application
    Filed: July 21, 2015
    Publication date: June 2, 2016
    Inventors: YOUNG-HOON KIM, Seon-Ae KIM, Soo Chang KIM, Byung-Jae KWAK, Seung Chan BANG
  • Publication number: 20160128044
    Abstract: When a transmitter transmits a first Timing Offset Indication iDentifier (TOID) of a plurality of TOIDs representing timing offset of a frame, the transmitter determines a first codeword corresponding to the first TOID of a plurality of codewords representing a subcarrier. The transmitter allocates a busy tone to a first subcarrier that the first codeword represents. The transmitter transmits the busy tone.
    Type: Application
    Filed: May 6, 2015
    Publication date: May 5, 2016
    Inventors: Kapseok CHANG, Byung-Jae KWAK