Patents by Inventor Sok Kyu Lee

Sok Kyu 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).

  • Nonvolatile memory device and memory system including the nonvolatile memory device
    Patent number: 10643716
    Abstract: A nonvolatile memory device includes a plurality of memory cells coupled to a single bit line, wherein each of the plurality of memory cells is coupled to a different word line from a plurality of word lines. The nonvolatile memory device includes a decoder configured to sequentially apply a read voltage of a first level to target word lines among the word lines, based on a multi-read command. The nonvolatile memory device includes a read circuit configured to obtain first sensing values of target memory cells coupled to the target word lines, by sensing the bit line each time the read voltage of the first level is applied to each of the target word lines.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: May 5, 2020
    Assignee: SK hynix Inc.
    Inventor: Sok Kyu Lee
  • METHOD AND TERMINAL FOR REQUESTING AND ACQUIRING INFORMATION RELATING TO CHANNEL ACCESS IN WIRELESS LAN, AND APPARATUS FOR PROVIDING INFORMATION RELATING TO CHANNEL ACCESS IN WIRELESS LAN
    Publication number: 20200137791
    Abstract: The present invention relates to a terminal for requesting and acquiring information relating to channel access in a wireless LAN, and to an apparatus for providing information relating to channel access in a wireless LAN. The terminal for requesting and acquiring information relating to channel access in a wireless LAN according to one embodiment of the invention verifies the reception of a beacon during a preset beacon interval, if it is verified that the beacon has not been received, transmits a group and slot information request signal, and receives, from an access point, a group and slot information response signal as a response to the group and slot information request signal.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Inventors: Hyoung Jin KWON, Jae Seung LEE, Min ho CHEONG, Hee Jung YU, Sok Kyu LEE
  • APPARATUS FOR TRANSMITTING AND RECEIVING DATA TO PROVIDE HIGH-SPEED DATA COMMUNICATION AND METHOD THEREOF
    Publication number: 20200128439
    Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Inventors: Hee-Jung YU, Taehyun JEON, Myung-Soon KIM, Eun-Young CHOI, Sok-kyu LEE, Deuk-Su LYU
  • Apparatus and method for controlling slot usage
    Patent number: 10624135
    Abstract: Provided is slot use control apparatus and method, including an access point (AP) to control a slotted channel access of a station (STA) in a wireless local area network (WLAN) includes generating a synchronization (synch) frame including an identification value indicating an STA allocated to a slot, and broadcasting the generated synch frame when a channel is in an idle state at a start point of the slot.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 14, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Jae Seung Lee, Min Ho Cheong, Hee Jung Yu, Jae Woo Park, Sok Kyu Lee
  • Nonvolatile memory device, data storage device and operating method thereof
    Patent number: 10606485
    Abstract: A nonvolatile memory device includes a target memory area; a control unit configured to apply a program pulse one or more times to the target memory area in response to a program command, until program verification passes; and a status storage unit configured to store a program status information for the target memory area, wherein the control unit is supplied with a first operation voltage, and the status storage unit is supplied with a second operation voltage.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: March 31, 2020
    Assignee: SK hynix Inc.
    Inventor: Sok Kyu Lee
  • Method of transmitting and receiving frame for uplink multi-user multiple-input and multiple-output (UL MU-MIMO) communication
    Patent number: 10608713
    Abstract: Provided is a method of transmitting and receiving a frame for a multi-user multiple-input and multiple-output (MU-MIMO) communication in an access point (AP), the method including determining at least one transmission station (STA), transmitting, to the transmission STA, an uplink multi-user poll (UL MU poll) frame requesting a data frame, receiving the data frame from the at least one transmission STA simultaneously, and transmitting an acknowledgement (ACK) frame to the at least one transmission STA in response to the receiving.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 31, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jee Yon Choi, Hyoung Jin Kwon, Je Hun Lee, Sok Kyu Lee
  • Method and apparatus for transceiving data
    Patent number: 10601474
    Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: March 24, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Woo Park, Jong Ee Oh, Il-Gu Lee, Sok-Kyu Lee, Min Ho Cheong, Jee Yon Choi, Jae Seung Lee, Yun Joo Kim
  • METHOD FOR ALLOCATING RESOURCES IN WIRELESS LAN SYSTEM AND WIRELESS LAN SYSTEM
    Publication number: 20200068578
    Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Inventors: Jae Seung LEE, Min Ho CHEONG, Hyoung Jin KWON, Sok Kyu LEE, Wun Cheol JEONG, Chang Sub SHIN, Cheol Sig PYO
  • Preamble configuring method in the wireless LAN system, and a method for a frame synchronization
    Patent number: 10567207
    Abstract: A method of configuring a preamble of a downlink frame for synchronization in data frame transmission of a 60 GHz a wireless local area network system, the method comprising arranging a short preamble having a plurality of repetitive S symbols, and an IS symbol, and arranging a long preamble having a long cyclic prefix (CP) and a plurality of L symbols for frame synchronization and symbol timing by performing auto-correlation according to the length of window of the auto-correlation.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: February 18, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo-Yong Lee, Sok-Kyu Lee
  • Method and terminal for requesting and acquiring information relating to channel access in wireless LAN, and apparatus for providing information relating to channel access in wireless LAN
    Patent number: 10555336
    Abstract: Provided are a terminal for requesting and acquiring information associated with a channel access in a wireless local area network (WLAN) and an apparatus for providing information associated with a channel access in a WLAN, and more particularly, the terminal for requesting and acquiring information associated with a channel access in a WLAN according to an example embodiment may verify whether a beacon is received during a predetermined beacon interval, transmit a group and slot information request signal when the beacon is verified not to be received, and receive a group and slot information response signal in response to the group and slot information request signal.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: February 4, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Jae Seung Lee, Min Ho Cheong, Hee Jung Yu, Sok Kyu Lee
  • Storage device and operating method thereof
    Patent number: 10552328
    Abstract: There are provided a memory controller for controlling a memory device to perform a more stable sensing operation, a storage device including the memory controller, and an operating method of the storage device. A memory controller includes: a processor for transmitting a cache read command to a memory device and then transmitting a status read command to the memory device; and a cache read controller for outputting a data-out command to the memory device according to a sensing section code included in a status read response transmitted by the memory device in response to the status read command.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: February 4, 2020
    Assignee: SK hynix Inc.
    Inventor: Sok Kyu Lee
  • METHOD AND APPARATUS FOR CONTROLLING CHANNEL ACCESS IN WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEM
    Publication number: 20200015269
    Abstract: Disclosed are a method and apparatus for an access point (AP) to control channel access of a station in a wireless local area network (WLAN) system. An AP according to one embodiment may determine resource allocation information for protecting a resource for a station not referring to traffic indication map (TIM) information. The determined resource allocation information is transmitted to a station referring to the TIM information, and the station referring to the TIM information does not conduct channel access in a time period specified in the resource allocation information.
    Type: Application
    Filed: September 18, 2019
    Publication date: January 9, 2020
    Inventors: Hyoung Jin KWON, Hee Jung YU, Sok Kyu LEE, Jae Seung LEE, Min Ho CHEONG
  • COMMUNICATION METHOD USING INTERFERENCE ALIGNMENT IN WIRELESS LAN
    Publication number: 20200014427
    Abstract: Disclosed is a communication method using interference alignment in a wireless local area network (WLAN). An access point (AP) according to one embodiment may receive first channel information between a station associated with the AP and the AP and second channel information between the station and a neighboring AP to perform interference alignment in cooperation with the AP from the station, and perform interference alignment based on the first channel information and the second channel information.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 9, 2020
    Inventors: Jae Seung LEE, Jin Hyung OH, Gwang Zeen KO, Hyun Duk KANG, Hyoung Jin KWON, Myung Sun SONG, Sok Kyu LEE, Min ho CHEONG, Jae Ick CHOI
  • Method for allocating resources in wireless LAN system and wireless LAN system
    Patent number: 10499405
    Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: December 3, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae Seung Lee, Min Ho Cheong, Hyoung Jin Kwon, Sok Kyu Lee, Wun Cheol Jeong, Chang Sub Shin, Cheol Sig Pyo
  • Method and apparatus for generating, transmitting, and receiving a data frame in a wireless communication system
    Patent number: 10499391
    Abstract: The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: December 3, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeeyon Choi, Jae Woo Park, Sok-Kyu Lee
  • MEMORY DEVICE AND MEMORY SYSTEM INCLUDING THE SAME
    Publication number: 20190355428
    Abstract: Provided herein may be a memory device and a memory system including the same. The memory device may include a logic group configured to generate and output driver control signals based on data received from an external device; and an internal power supply circuit configured to control current corresponding to an internal power supply voltage in response to the driver control signals, wherein the internal power supply circuit increases the current corresponding to the internal power supply voltage as the number of first data in the received data increases.
    Type: Application
    Filed: January 2, 2019
    Publication date: November 21, 2019
    Inventor: Sok Kyu LEE
  • NONVOLATILE MEMORY DEVICE AND MEMORY SYSTEM INCLUDING THE NONVOLATILE MEMORY DEVICE
    Publication number: 20190355427
    Abstract: A nonvolatile memory device includes a plurality of memory cells coupled to a single bit line, wherein each of the plurality of memory cells is coupled to a different word line from a plurality of word lines. The nonvolatile memory device includes a decoder configured to sequentially apply a read voltage of a first level to target word lines among the word lines, based on a multi-read command. The nonvolatile memory device includes a read circuit configured to obtain first sensing values of target memory cells coupled to the target word lines, by sensing the bit line each time the read voltage of the first level is applied to each of the target word lines.
    Type: Application
    Filed: December 3, 2018
    Publication date: November 21, 2019
    Applicant: SK hynix Inc.
    Inventor: Sok Kyu LEE
  • METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN A MIMO SYSTEM
    Publication number: 20190349039
    Abstract: The present invention relates to a method and apparatus for transmitting and receiving data. A data transmission method from a sender terminal to a receiver terminal in a MIMO system using a variable frequency band according to one embodiment of the present invention comprises: repeatedly generating a signal field depending on a frequency band that is applied to the transmission of a data frame; generating a data field including the data; generating a data frame including the signal field and the data field; and transmitting the data frame to the receiver terminal. The present invention is advantageous in that a signal field which is transmitted together with the data being transmitted from the sender terminal to the receiver terminal in the MIMO system can be sent more efficiently.
    Type: Application
    Filed: July 28, 2019
    Publication date: November 14, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong-Ee OH, Minho CHEONG, Sok-Kyu LEE
  • CHANNEL SOUNDING METHOD IN WIRELESS LAN SYSTEM AND DEVICE FOR SUPPORTING SAME
    Publication number: 20190349903
    Abstract: A method for channel sounding in a wireless local area network (WLAN) system and apparatus for the same is disclosed. An access point (AP) to perform the method for channel sounding broadcasts information on a restricted access window (RAW) for channel sounding included in a beacon, and transmits null data packets (NDP) for channel estimation in the RAW to a station (STA). The STA estimates channel information based on the NDPs, and transmits the estimated channel information to the AP.
    Type: Application
    Filed: June 27, 2019
    Publication date: November 14, 2019
    Inventors: Min ho CHEONG, Sok Kyu LEE, Hyoung Jin KWON, Jae Seung LEE
  • Method and apparatus for controlling channel access in wireless local area network (WLAN) system
    Patent number: 10462817
    Abstract: Disclosed are a method and apparatus for an access point (AP) to control channel access of a station in a wireless local area network (WLAN) system. An AP according to one embodiment may determine resource allocation information for protecting a resource for a station not referring to traffic indication map (TIM) information. The determined resource allocation information is transmitted to a station referring to the TIM information, and the station referring to the TIM information does not conduct channel access in a time period specified in the resource allocation information.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: October 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Hee Jung Yu, Sok Kyu Lee, Jae Seung Lee, Min Ho Cheong