Patents by Inventor Hak-Ju Lee

Hak-Ju Lee 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: 20210285158
    Abstract: Disclosed is a method for manufacturing a base paper for eco-friendly paper cups and, more specifically, to a method for manufacturing a base paper for eco-friendly paper cups, the method enabling the manufacturing of a base paper for eco-friendly cups, which has excellent heat sealability, water resistance, and block resistance, facilitates recycling, and is biodegradable in nature.
    Type: Application
    Filed: July 8, 2020
    Publication date: September 16, 2021
    Inventors: Ik-Sun Choi, Hak-Ju Lee, Yoon-Hee Noh, Jong-Soo Kim
  • Publication number: 20210195253
    Abstract: A receiver is disclosed. The present receiver comprises: a reception unit for receiving, through a channel, a frame in which an LLS for each broadcast service is included in different PLPs; and a signal processing unit for calculating the size of a memory required to time-deinterleave the PLPs including the LLS, and for processing the PLPs including the LLS, on the basis of the calculated size of the memory.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 24, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun-koo YANG, Young-ho OH, Hak-ju LEE
  • Patent number: 11043967
    Abstract: A method is provided for channel encoding in a communication system using an LDPC code. The method includes encoding input bits using a BCH code, shortening bits of the encoded input bits according to a number of bit groups to be shortened and an order among a plurality of orders according to which the bit groups are shortened, wherein the number of bit groups to be shortened is based on a number of bits to be shortened, which is based on a number of the encoded input bits, encoding information bits including the encoded input bits and the shortened one or more bits, using an LDPC code to generate parity bits, puncturing bits in the parity bits based on a puncturing parameter among puncturing parameters, and transmitting a signal generated from the encoded information bits based on the punctured bits. The plurality of orders being based on the puncturing parameters and including first and second orders.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: June 22, 2021
    Inventors: Se-Ho Myung, Hong-Sil Jeong, Sung-Ryul Yun, Jae-Yoel Kim, Hyun-Koo Yang, Hak-Ju Lee, Jin-Hee Jeong
  • Publication number: 20210119725
    Abstract: A transmission device is disclosed. The transmitting device comprises a processor for generating a packet comprising a header and a payload, on the basis of an input packet, and generating a frame comprising the generated packet, and a transmission unit for transmitting a signal generated on the basis of the frame. The processor inserts padding into at least one packet from among a plurality of packets included in the frame, on the basis of the number of packets included in the frame, the length of each input packet included in the frame, and the lengths of the packets. Here, the boundary of an input packet may be included in a packet into which padding is inserted.
    Type: Application
    Filed: June 4, 2018
    Publication date: April 22, 2021
    Inventors: Hyun-koo YANG, Young-ho OH, Hak-ju LEE
  • Patent number: 10951033
    Abstract: The present invention relates to a method for controlling the frequency of a stand-alone microgrid wherein an energy storage device of the stand-alone microgrid is operated as a main power source by controlling a battery power conditioning system (PCS) of the stand-alone microgrid in a constant voltage constant frequency (CVCF) mode. According to the present invention, it is possible to operate the frequency stably while considering the fuel cost and power generation efficiency of a stand-alone microgrid.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: March 16, 2021
    Assignee: KOREA ELECTRIC POWER CORPORATION
    Inventors: Woo-Kyu Chae, Hak-Ju Lee, Jung-Sung Park, Jong-Nam Weon, Jun-Bo Sim
  • Publication number: 20210058202
    Abstract: A transmitting apparatus includes: a frame generator configured to generate a frame including a plurality of OFDM symbols; and a signal processor configured to signal-process the generated frame, wherein the plurality of OFDM symbols are included in a bootstrap, a preamble including an L1 basic and an L1 detail, and a payload, and wherein the bootstrap includes information on an FFT size of the OFDM symbols included in the preamble, a length of a guard interval (GI) inserted in the preamble, and a pattern of a preamble pilot inserted in the preamble, and information on an L1 basic mode.
    Type: Application
    Filed: November 9, 2020
    Publication date: February 25, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-ho OH, Se-ho MYUNG, Hak-ju LEE
  • Publication number: 20210021697
    Abstract: Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Inventors: Alain MOURAD, Sung-hee Hwang, Daniel Ansorregui, Belkacem Mouhouche, Hak-ju Lee
  • Patent number: 10897525
    Abstract: A transmission apparatus is disclosed. The present transmission apparatus, for each PLP, comprises: a frame builder which calculates the size of a subslice based on the number of cells of the PLP to be transmitted in one subframe and the number of predetermined subslices, compares a value calculated based on the size of the subslices and the number of the subslices with the number of cells of the PLP to determine whether to insert the dummy cell, and maps a cell of the PLP included in the subslice to a subframe; and a transmission unit for transmitting the subframe to a reception apparatus, and at least one of the subslices may comprise a dummy cell depending on whether the dummy cell is inserted.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: January 19, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-ho Oh, Hak-ju Lee
  • Patent number: 10879701
    Abstract: The present invention relates to a power conditioning system (PCS) efficiency-considered microgrid operation device comprising: a scheduling unit for scheduling outputs of a controllable load, a battery, and an emergency internal combustion generator operated in a microgrid; and an operation control unit for controlling the operation of the battery, the emergency internal combustion generator, and the controllable load according to charging/discharging of the battery, the output or the emergency internal combustion generator, and the output of the controllable load, which have been scheduled by the scheduling unit, wherein the scheduling unit schedules charging/discharging by considering the efficiency of a PCS such that a mate of charge (SOC) of the battery is maintained within a preset range. According to the present invention, the microgrid can be efficiently operated by considering the charging/discharging efficiency of the PCS.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: December 29, 2020
    Assignee: KOREA ELECTRIC POWER CORPORATION
    Inventors: Woo-Kyu Chae, Hak-Ju Lee, Jung-Sung Park, Jong-Nam Weon, Jun-Bo Sim
  • Patent number: 10873350
    Abstract: A reception device is disclosed. The reception device comprises: a reception unit for receiving a signal including at least one of a channel estimation signal, a transmitter identification (TxID) signal, and a preamble signal; a TxID detection unit for detecting the TxID signal from the received signal; a TxID processing unit for changing the frequency band of the detected TxID signal, on the basis of a result of the detection of the TxID signal; and an attenuation unit for attenuating the TxID signal in the received signal by using the TxID signal having the changed frequency band.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 22, 2020
    Assignee: SAMSUNG ELECTRONICS CO.. LTD.
    Inventors: Young Ho Oh, Hak Ju Lee
  • Patent number: 10862633
    Abstract: A transmitting apparatus includes: a frame generator configured to generate a frame including a plurality of OFDM symbols; and a signal processor configured to signal-process the generated frame, wherein the plurality of OFDM symbols are included in a bootstrap, a preamble including an L1 basic and an L1 detail, and a payload, and wherein the bootstrap includes information on an FFT size of the OFDM symbols included in the preamble, a length of a guard interval (GI) inserted in the preamble, and a pattern of a preamble pilot inserted in the preamble, and information on an L1 basic mode.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-ho Oh, Se-ho Myung, Hak-ju Lee
  • Patent number: 10827045
    Abstract: Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: November 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Alain Mourad, Sung-hee Hwang, Daniel Ansorregui, Belkacem Mouhouche, Hak-ju Lee
  • Publication number: 20200213990
    Abstract: A method and an apparatus are provided for receiving signaling information in a digital broadcasting system. The method includes receiving a frame including a first coded block, a second coded block, and at least one physical layer pipe (PLP) data; decoding the first coded block to identify first signaling information for a physical layer; and decoding the second coded block to identify second signaling information. The first signaling information has a fixed number of bits. The second signaling information has a variable number of bits. The first signaling information includes information indicating a forward error correction (FEC) type of the second signaling information for receiving the second signaling information. The second signaling information includes information indicating a modulation scheme used for related PLP data.
    Type: Application
    Filed: March 13, 2020
    Publication date: July 2, 2020
    Inventors: Hwan-Joon Kwon, Hak-Ju Lee, Jae-Yael Kim, Yeon-Ju Lim, Sung-Ryul Yun, Hong-Sil Jeong, Seho Myung
  • Publication number: 20200204491
    Abstract: Provided are a transmitting apparatus, a receiving apparatus and controlling methods thereof. The transmitting apparatus includes: at least one processor configured to implement a packet generator which generates a packet including a header and a payload based on a plurality of input packets; and a signal processor which signal-processes the generated packet, and a transmitter configured to transmit the signal-processed packet. A base field included in the header includes a first field set to a first value representing that the base field is a first length or a second value representing that the base field is a second length.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-hee HWANG, Hak-ju LEE, Hyun-Koo YANG
  • Patent number: 10652628
    Abstract: A transmitter and a receiver of data frames and related methods are disclosed. The transmitter includes: a frame generator configured to generate a first frame comprising data to be transmitted; and a preamble inserter configured to insert a preamble into the first frame, wherein the preamble inserter is further configured to insert, in the preamble, emergency alert service (EAS) information related to a preset emergency alert event, and set an indicator in the frame to indicate whether the EAS information is inserted in the preamble. Accordingly, only important information related to the EAS is transmitted in the form of a preamble to achieve robust transmission, and L1 information of related data is directly transmitted to reduce power consumption.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 12, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hak-ju Lee, Young-ho Oh
  • Patent number: 10616107
    Abstract: Provided are a transmitting apparatus, a receiving apparatus and controlling methods thereof. The transmitting apparatus includes: at least one processor configured to implement a packet generator which generates a packet including a header and a payload based on a plurality of input packets; and a signal processor which signal-processes the generated packet, and a transmitter configured to transmit the signal-processed packet. A base field included in the header includes a first field set to a first value representing that the base field is a first length or a second value representing that the base field is a second length.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 7, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-hee Hwang, Hak-ju Lee, Hyun-Koo Yang
  • Patent number: 10595305
    Abstract: A method and an apparatus are provided for transmitting and receiving signaling information in a digital broadcasting system. The method includes encoding first signaling information for a physical layer to generate a first coded block; encoding second signaling information to generate a second coded block; and transmitting a frame including the first coded block, the second coded block, and at least one physical layer pipe (PLP) data. The first signaling information has a fixed number of bits, and the second signaling information has a variable number of bits. The first signaling information includes information indicating a forward error correction (FEC) type of the second signaling information for receiving the second information, and the second signaling information includes information indicating a modulation scheme used for a related PLP data.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 17, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hwan-Joon Kwon, Hak-Ju Lee, Jae-Yoel Kim, Yeon-Ju Lim, Sung-Ryul Yun, Hong-Sil Jeong, Seho Myung
  • Publication number: 20200076454
    Abstract: A reception device is disclosed. The reception device comprises: a reception unit for receiving a signal including at least one of a channel estimation signal, a transmitter identification (TxID) signal, and a preamble signal; a TxID detection unit for detecting the TxID signal from the received signal; a TxID processing unit for changing the frequency band of the detected TxID signal, on the basis of a result of the detection of the TxID signal; and an attenuation unit for attenuating the TxID signal in the received signal by using the TxID signal having the changed frequency band.
    Type: Application
    Filed: March 6, 2017
    Publication date: March 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Ho OH, Hak Ju LEE
  • Publication number: 20190379771
    Abstract: A transmission apparatus is disclosed. The present transmission apparatus, for each PLP, comprises: a frame builder which calculates the size of a sub slice based on the number of cells of the PLP to be transmitted in one subframe and the number of predetermined subslices, compares a value calculated based on the size of the subslices and the number of the subslices with the number of cells of the PLP to determine whether to insert the dummy cell, and maps a cell of the PLP included in the subslice to a subframe; and a transmission unit for transmitting the subframe to a reception apparatus, and at least one of the subslices may comprise a dummy cell depending on whether the dummy cell is inserted.
    Type: Application
    Filed: January 29, 2018
    Publication date: December 12, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-ho OH, Hak-ju LEE
  • Patent number: 10425258
    Abstract: Methods and apparatuses are provided for transmitting signaling information by a transmitting apparatus in a broadcasting system. A controller generates a codeword by encoding information bits of the signaling information. The codeword includes the information bits and parity bits. The controller punctures one or more of the parity bits to generate a punctured codeword. The controller generates a plurality of frames. The plurality of frames include a first frame including at least a part of the punctured codeword and a second frame including at least one additional parity bit for the signaling information. A transmitter transmits the plurality of frames. The at least a part of the punctured codeword is included in a preamble part of the first frame and the at least one additional parity bit is included in a preamble part of the second frame.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 24, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hong-Sil Jeong, Sung-Ryul Yun, Jae-Yoel Kim, Hyun-Koo Yang, Hak-Ju Lee, Se-Ho Myung, Jin-Hee Jeong