Patents by Inventor Jea Hoon Yu

Jea Hoon Yu 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: 20190098104
    Abstract: A network infrastructure system implements data sharing and processing by using a network infrastructure to which an application terminal or application server constituting an application domain is connected in a shared manner, includes a plurality of network infrastructure nodes storing, processing, sharing data, wherein each of the plurality of network infrastructure nodes includes a data processing module including a data transfer function, a data distribution function, a data processing function, and a data sharing function which are provided to at least one of the application terminal and the application server.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 28, 2019
    Inventors: Sun Me KIM, Nam Seok KO, Sang Ki KIM, Sung Hyuk BYUN, Dong Il SEO, Jea Hoon YU, Tae Whan YOO, Seung Hyun YOON, Sang Ho LEE
  • Patent number: 9094118
    Abstract: Disclosed are a system for providing a WDM-based wireless optical transport network and a method for transmitting a wireless optical signal using the same. The system for providing a WDM-based wireless optical transport network, includes: a central office terminal (COT) for bilaterally transmitting wireless optical signals of different unique wavelengths; and a plurality of remote terminals (RTs) connected to the COT in a ring, for dropping a wireless optical signal having a corresponding unique wavelength from the wireless optical signals transmitted from the COT, for adding a corresponding optical transmission signal to wireless optical signals of the remaining unique wavelengths except for the corresponding unique wavelength of the dropped wireless optical signal, and for bilaterally transporting the wireless optical signals to which the corresponding optical transmission signal is added.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: July 28, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Jea Hoon Yu
  • Publication number: 20140153928
    Abstract: In a wireless optical communication system in which communication is performed based on a free space and a plurality of the communication apparatuses are arranged in a ring form around a central office terminal (COT), the communication apparatus monitors optical signals received in a first direction or in a second direction opposite to the first direction, and selects a first path through which the optical signals in the first direction are received and a second path through which the optical signals in the second direction are received. The communication apparatus converts an optical signal having a predetermined unique wavelength from among the optical signals received through the selected path into a signal of a frequency domain having a plurality of subcarriers, and obtains packet data mapped to each of the subcarriers.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 5, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jea Hoon YU, Seung-Hyun CHO, Tae Il KIM, Jeong-Dong RYOO, Tae Whan YOO, Bheom Soon JOO, Jong Hyun LEE, Bong Tae KIM
  • Patent number: 8724992
    Abstract: A ring network system includes a plurality of node apparatuses that are sequentially connected through a transmission medium that is formed in a ring form. In the ring network system, the remaining node apparatuses, except for a first node apparatus of the plurality of node apparatuses pass an optical signal that is transmitted from the first node apparatus, and a second node apparatus corresponding to a destination of the optical signal among the remaining node apparatuses, extracts the optical signal while transferring the first optical signal to a next node apparatus of the second node apparatus.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: May 13, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun Jae Lee, Hong Ju Kim, Bup Joong Kim, Jea Hoon Yu, Tae Whan Yoo
  • Patent number: 8638807
    Abstract: A method for managing an Ethernet ring network of a VLAN-based bridge is provided that includes: registering a major-ring VLAN ID (VID) in a ring port filtering database of a ring protection link owner node in accordance with a request for registering the major ring VID from an Ethernet Ring Protection controller mounted on the ring protection link owner node of a major ring; delivering, by the ring protection link owner node, a VID registration message to other nodes which belong to the major ring through a ring port; receiving the VID registration message through the ring port and registering the major ring VID in a ring port filtering database of each node itself, by each node belonging to the major ring; and delivering, by each node belonging to the major ring, the VID registration message to other nodes belonging to the major ring through the ring port.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 28, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dae Ub Kim, Sang Min Lee, Jeong Dong Ryoo, Jea Hoon Yu, Tae Whan Yoo
  • Publication number: 20140010071
    Abstract: There is provided a method for managing an Ethernet ring network of a VLAN-based bridge that includes: registering a major-ring VID (VLAN ID) in a ring port filtering database of a ring protection link owner node in accordance with a request for registering the major ring VID (VLAN ID) from an ERP (Ethernet Ring Protection) controller mounted on the ring protection link owner node of a major ring; delivering, by the ring protection link owner node, a VID registration message to other nodes which belong to the major ring through a ring port; receiving the VID registration message through the ring port and registering the major ring VID in a ring port filtering database of each node itself, by each node which belongs to the major ring; and delivering, by each node which belongs to the major ring, the VID registration message to other nodes which belong to the major ring through the ring port.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae Ub KIM, Sang Min LEE, Jeong Dong RYOO, Jea Hoon YU, Tae Whan YOO
  • Patent number: 8498314
    Abstract: Provided is a clock operating method and apparatus for supporting a plurality of Ethernet physical layer interfaces. To provide a network synchronization function in a board of simultaneously accommodating the plurality of Ethernet physical layer interfaces, the clock operating method may include: determining a physical layer interface according to a current network synchronization mode; and generating a clock signal of the determined physical layer interface as a reference signal of another physical layer interface.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: July 30, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Woo Young Choi, Tae Sik Cheung, Jea Hoon Yu
  • Patent number: 8477660
    Abstract: A method for updating a filtering database in a multi-ring network, includes: when the topology of a lower ring in a multi-ring network, in which a plurality of ring networks are connected by two ring connection nodes, is altered and the ring connection node detects the alteration in the topology of the lower ring, erasing, by the ring connection node, its filtering database; generating, by the ring connection node, a control message including a ring ID, a blockage flag, and an erasure flag; transmitting the control message in both directions of the ring; and determining, by a node which receives the control message, to erase a filtering database by referring to and correcting the blockage and erasure flag information included in the control message.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: July 2, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Koog Lee, Jeong Dong Ryoo, Sang Min Lee, Dae Ub Kim, Jea Hoon Yu, Tea Whan Yoo
  • Patent number: 8422124
    Abstract: A spectrum-sliced seed light module for a wavelength division multiplexing passive optical network (WDM PON) is provided. The seed light module includes an optical amplifier to amplify seed light, an optical wavelength filter to transmit broadband light, which is output in opposite direction to an output direction of the seed light, at periodic frequency intervals, and a reflective mirror to reflect light which is spectrum-sliced through the optical wavelength filter to the optical wavelength filter.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: April 16, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Han-hyub Lee, Byoung-whi Kim, Jea-hoon Yu, Mahn Yong Park, Jai-sang Koh
  • Patent number: 8364043
    Abstract: A method and apparatus for controlling a reflective semiconductor optical amplifier (RSOA) are provided. The RSOA control apparatus sets a threshold current at which a light source starts to oscillate to be constant regardless of a wavelength of seed light by controlling a driving temperature for driving a RSOA, and adjusts an optical characteristic which is differently output for each wavelength of seed light to be constant by controlling a driving current.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: January 29, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jie-hyun Lee, Seung-hyun Cho, Byoungi-whi Kim, Jea-hoon Yu, Jai-sang Koh
  • Patent number: 8285143
    Abstract: In a method of allocating a bandwidth of a passive optical network, downward data are transmitted by varying a wavelength based on a wavelength division method and upward data are transmitted using a time division method. Thereby, by efficiently allocating a network bandwidth, data can be transmitted and by realizing statistical multiplexing, transmission efficiency can be improved.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 9, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Yeon Kim, Kang bok Lee, Eui Suk Jung, Jea Hoon Yu, Byoung Whi Kim
  • Patent number: 8054172
    Abstract: The present invention relates to an apparatus with reconfiguration function and signal gathering function. The apparatus with reconfiguration function and signal gathering function according to the present invention comprises a signal gathering unit which gathers at least one alarm digital alarm signal, an alarm signal address setting unit where the address of the alarm signal gathering unit is setup; and an alarm signal collection controller which outputs the at least one digital alarm signal through serial bus. Therefore, address is allocated to a plurality of digital signals and thus the number of necessary components decreases and the embodiment area decreases, as well.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 8, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eui Suk Jung, Tae Yeon Kim, Kang Bok Lee, Jea Hoon Yu, Byoung Whi Kim
  • Publication number: 20110150007
    Abstract: Provided is a clock operating method and apparatus for supporting a plurality of Ethernet physical layer interfaces. To provide a network synchronization function in a board of simultaneously accommodating the plurality of Ethernet physical layer interfaces, the clock operating method may include: determining a physical layer interface according to a current network synchronization mode; and generating a clock signal of the determined physical layer interface as a reference signal of another physical layer interface.
    Type: Application
    Filed: September 15, 2010
    Publication date: June 23, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Woo Young CHOI, Tae Sik Cheung, Jea Hoon Yu
  • Publication number: 20110153847
    Abstract: A communication method of a first communication node of a combined node system including a plurality of communication nodes includes receiving data from at least one second communication node of the plurality of communication nodes, generating common control information by using the data, the common control information including data transmission path information between the plurality of communication nodes and an external communication apparatus which is on the outside of the combined node system, transmitting the common control information to the at least one second communication node, and communicating with the external communication apparatus through at least a part of the plurality of communication nodes on the basis of the common control information.
    Type: Application
    Filed: October 15, 2010
    Publication date: June 23, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Bup Joong KIM, Ji Wook YOUN, Hong Ju KIM, Jea Hoon YU
  • Publication number: 20110052194
    Abstract: A ring network system includes a plurality of node apparatuses that are sequentially connected through a transmission medium that is formed in a ring form. In the ring network system, the remaining node apparatuses, except for a first node apparatus of the plurality of node apparatuses pass an optical signal that is transmitted from the first node apparatus, and a second node apparatus corresponding to a destination of the optical signal among the remaining node apparatuses, extracts the optical signal while transferring the first optical signal to a next node apparatus of the second node apparatus.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 3, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyun Jae LEE, Hong Ju KIM, Bup Joong KIM, Jea Hoon YU, Tae Whan YOO
  • Publication number: 20110019536
    Abstract: There is provided a method for managing an Ethernet ring network of a VLAN-based bridge that includes: registering a major-ring VID (VLAN ID) in a ring port filtering database of a ring protection link owner node in accordance with a request for registering the major ring VID (VLAN ID) from an ERP (Ethernet Ring Protection) controller mounted on the ring protection link owner node of a major ring; delivering, by the ring protection link owner node, a VID registration message to other nodes which belong to the major ring through a ring port; receiving the VID registration message through the ring port and registering the major ring VID in a ring port filtering database of each node itself, by each node which belongs to the major ring; and delivering, by each node which belongs to the major ring, the VID registration message to other nodes which belong to the major ring through the ring port.
    Type: Application
    Filed: July 22, 2010
    Publication date: January 27, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae Ub KIM, Sang Min LEE, Jeong Dong RYOO, Jea Hoon YU, Tae Whan YOO
  • Publication number: 20110023018
    Abstract: A component-based system plane software platform is provided and the software platform includes an individual identifier manager to assign an individual identifier to each object of an application that is executed in a distributed computing environment and to manage the individual identifier, and an instance provider to create an instance for a service object in response to a request from the application and to provide the instance to the application. The software platform may systematically and effectively manage and control applications of system software under a component-based system software architecture to which a container model structure is applied.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Soo-Myung PARK, Jea-Hoon YU, Byung-Jun AHN, Tae-Whan YOO
  • Publication number: 20100302967
    Abstract: A node generates a delay measurement frame and transmits it to an adjacent node of an Ethernet ring network in order to measure a delay of the network. The node receives the delay measurement frame generated by the node from another adjacent node of the ring network, and measures a network delay by using the received delay measurement frame.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sang-Min LEE, Jeong-dong RYOO, Daeub KIM, Jea Hoon YU, Tae Whan YOO
  • Publication number: 20100296416
    Abstract: A method for updating a filtering database in a multi-ring network, includes: when the topology of a lower ring in a multi-ring network, in which a plurality of ring networks are connected by two ring connection nodes, is altered and the ring connection node detects the alteration in the topology of the lower ring, erasing, by the ring connection node, its filtering database; generating, by the ring connection node, a control message including a ring ID, a blockage flag, and an erasure flag; transmitting the control message in both directions of the ring; and determining, by a node which receives the control message, to erase a filtering database by referring to and correcting the blockage and erasure flag information included in the control message.
    Type: Application
    Filed: May 24, 2010
    Publication date: November 25, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kwang Koog Lee, Jeong Dong Ryoo, Sang Min Lee, Dae Ub Kim, Jea Hoon Yu, Tea Whan Yoo
  • Publication number: 20100290340
    Abstract: A method for protection switching of a ring network, which includes a plurality of nodes disposed in a ring shape, includes: allowing a node adjacent to a failure link among the plurality of nodes to generate a failure protection switching frame when the failure link is generated in the ring network; allowing the node adjacent to the failure link to transmit the failure protection switching frame to an adjacent node; allowing each of the plurality of nodes to delete address lists connected with the ring network except for an external network (hereinafter referred to as subnet) from their own forwarding table; allowing each of the plurality of nodes to transmit a subnet address list protection switching frame including a subnet address list; and allowing a node receiving the subnet address list protection switching frame to update the forwarding table on the basis of the subnet address list included in the frame.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 18, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwang Koog LEE, Jeong-dong RYOO, Sang-Min LEE, Daeub KIM, Jea Hoon YU, Tae Whan YOO