Patents by Inventor Kyeong-Seob Cho

Kyeong-Seob Cho 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).

  • Access point, L2 switch and method of supporting multicast handover using the access point and L2 switch
    Patent number: 8774130
    Abstract: An access point, a layer 2 switch, and multicast handover supporting method using the access point and the layer 2 switch are provided. According to the method of supporting multicast handover, when a mobile node is handed over from one cell to another while being provided with a multicast service in a wireless mobile communication network, the L2 switch performs multicast traffic routing in response to reception of MAC address information and multicast service source and group information from the access point. Hence, multicast traffic can be supported to be fast and seamlessly handed over within layer 2 network equipment.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 8, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Il-Gu Jung, Eun-Jun Rhee, Kyoung-Hee Lee, Sang-Kyoun Jo, Sung-Kuen Lee, Kyeong-Seob Cho, Hyun-Woo Lee, Won Ryu
  • METHOD AND APPARATUS FOR SUPPORTING MOBILITY BASED ON FLOW IN PMIPv6
    Publication number: 20120163219
    Abstract: A method and apparatus for supporting a flow-based mobility to a multi-mode terminal equipped with a plurality of wired and wireless network interfaces, and selecting an access network may be provided in the PMIPv6 technology that supports a network-based mobility. Also, a flow-based location registration process and a handover process of the multi-mode terminal may be provided, and a flow-based data transmission process and an access network selecting process for the multi-mode terminal may be provided.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Kuen LEE, Kyoung Hee LEE, Kyeong Seob CHO, Eun Jun RHEE, II Gu JUNG, Seng Kyoun JO, Hyun Woo LEE, Won RYU
  • ACCESS POINT, L2 SWITCH AND METHOD OF SUPPORTING MULTICAST HANDOVER USING THE ACCESS POINT AND L2 SWITCH
    Publication number: 20120134313
    Abstract: An access point, a layer 2 switch, and multicast handover supporting method using the access point and the layer 2 switch are provided. According to the method of supporting multicast handover, when a mobile node is handed over from one cell to another while being provided with a multicast service in a wireless mobile communication network, the L2 switch performs multicast traffic routing in response to reception of MAC address information and multicast service source and group information from the access point. Hence, multicast traffic can be supported to be fast and seamlessly handed over within layer 2 network equipment.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Il-Gu JUNG, Eun-Jun Rhee, Kyoung-Hee Lee, Sang-Kyoun Jo, Sung-Kuon Lee, Kyeong-Seob Cho, Hyun-Woo Lee, Won Ryu
  • METHOD AND SYSTEM FOR ASSESSING QUALITY OF MULTI-LEVEL VIDEO
    Publication number: 20110141289
    Abstract: Provided is a method of assessing an image quality of each of a base layer and an enhanced layer using a different scheme to assess a quality of a multi-level video based on assessment results. A multi-level video quality assessing system includes: a bitstream extractor to separate a multi-level video into a base layer bitstream and an enhanced layer bitstream; a base layer quality assessment module to generate quality assessment result information of a base layer image by assessing an image quality of base layer bitstream; an enhanced layer quality assessment module to generate quality assessment result information of an enhanced layer image by assessing an image quality of enhanced layer bitstream; and a final video quality assessment module to assess a quality of experience (QoE) of multi-level video based on quality assessment result information of each of the base layer image and the enhanced layer image.
    Type: Application
    Filed: December 8, 2010
    Publication date: June 16, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kyung Hee LEE, Hyun Woo LEE, Kyeong Seob CHO, Sungkuen LEE, Won RYU, Donggyu SIM, Seonoh LEE
  • Internet broadcasting system and method thereof
    Patent number: 7443852
    Abstract: An Internet broadcasting system and a method thereof are provided.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: October 28, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong-Gook Kwon, Kyeong-Seob Cho, Jea-Hoon Yu, Bong-Tae Kim
  • Internet broadcasting system and method thereof
    Publication number: 20060126668
    Abstract: An Internet broadcasting system and a method thereof are provided.
    Type: Application
    Filed: July 7, 2005
    Publication date: June 15, 2006
    Inventors: Jeong-Gook Kwon, Kyeong-Seob Cho, Jea-Hoon Yu, Bong-Tae Kim