Patents by Inventor Ho-yong Ryu

Ho-yong Ryu 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: 20130133057
    Abstract: Disclosed are a system for managing virtual private networks (VPNs) includes: terminals configured to transmit user data; a manager configured to transmit information for concealing networks and managing the VPNs; border gateways configured to decrypt the user data and perform a network address translation (NAT) procedure and a filtering procedure on the decrypted user data based on the information; and servers configured to receive the user data subjected to the NAT procedure and the filtering procedure, wherein the filtering procedure is a procedure discarding the user data to be transferred to the servers that are not allowed so as to allow the terminals to access only the allowed servers, the NAT procedure is a procedure changing an Internet protocol (IP) address used in a first network to an IP address used in a second network, and the first network and the second network are different networks.
    Type: Application
    Filed: September 12, 2012
    Publication date: May 23, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Ho Sun YOON, Sung Back HONG, Jung Sik KIM, Seong MOON, Sun Cheul KIM, Seung Woo HONG, Sang Jin HONG, Pyung Koo PARK, Young Soo SHIN, Ho Yong RYU, Soon Seok LEE
  • Publication number: 20120162445
    Abstract: A virtual tunnel router, an IP camera management server, and a location-based Internet protocol (IP) camera service are provided. Without complex equipment, a direct communication between a user terminal and an IP camera is established based on virtual IP, and thus control of the IP camera is very simple and a user is allowed to directly access the IP camera at any time and any place.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun-Cheul KIM, Young-Soo SHIN, Sang-Jin HONG, Jung-Sik KIM, Ho-Yong RYU
  • Publication number: 20120161936
    Abstract: Provided is a radio frequency identification (RFID) tag device. The RFID tag device includes memory which stores ID information and a second count value, and a certification unit which performs a certification process according to a keyed hash value received from the outside and a result of a comparison between first and second count values received from the outside, and adjusts the second count value.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 28, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ho Sun YOON, Ho Yong Ryu
  • Publication number: 20120163267
    Abstract: Disclosed are a method and a system for receiving multicast data without using a tunnel in a tunneling-based mobility network architecture, and a mobile terminal thereof. By providing a method for receiving multicast data in a tunneling-based mobility network architecture receiving multicast data over a multicast-enabled Internet protocol (IP) network by switching a path before tunneling and thereby transmitting a corresponding channel reception request message to a corresponding visit network when a transmission packet of a mobile terminal is a channel reception request message in a heterogeneous visit network, and at the same time, guaranteeing mobility of the mobile terminal by tunneling a corresponding transmission packet to a care-of-address of a visit network being currently visited when the transmission packet is not the channel reception request message, there are provided a method and a system for receiving multicast data via a visit network without using an existing tunnel.
    Type: Application
    Filed: November 11, 2011
    Publication date: June 28, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong Moon, Ho Yong Ryu, Pyung Koo Park
  • Publication number: 20120106559
    Abstract: In a plurality of virtual tunnel routers including a first virtual tunnel router and a second virtual tunnel router, the first virtual tunnel router and the second virtual tunnel router request virtual network prefix information from a tunnel mapping controller. When the tunnel mapping controller generates virtual network prefix information of the first virtual tunnel router and the second virtual tunnel router, respectively, and transmits the same along with information of a list of adjacent virtual tunnel routers, the first virtual tunnel router and the second virtual tunnel router create a tunnel. With the tunnel established, the virtual network prefix information received by the first virtual tunnel router and second virtual tunnel router, respectively, is linked so that direct communication can be performed between the first virtual tunnel router and the second virtual tunnel router.
    Type: Application
    Filed: September 16, 2011
    Publication date: May 3, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sun Cheul KIM, Seong Moon, Seungwoo Hong, Ho Sun Yoon, Ho Yong Ryu
  • Publication number: 20120014350
    Abstract: The invention relates to a method and an apparatus for controlling seamless handover between heterogeneous networks based on IPv6 over IPv4 tunneling. When IPv6 service is provided using tunneling in an IPv4 based network environment, handover of a mobile terminal between different networks is achieved through switching of an active tunnel and a standby tunnel, and thus handover between different networks is facilitated and data loss is prevented to secure continuity of service provided to the mobile terminal even when the mobile terminal hands over to a heterogeneous network.
    Type: Application
    Filed: October 17, 2008
    Publication date: January 19, 2012
    Inventors: Sun Cheul Kim, Pyung Koo Park, Seong Moon, Young Soo Shin, Ho Yong Ryu, Sung Back Hong
  • Publication number: 20110270996
    Abstract: A method for configuring a closed user network (CUN) using an IP tunneling mechanism and a CUN system are disclosed. In particular, disclosed is a technique of establishing a tunnel between a tunnel end edge device (TEED) and a control server by using an IP tunneling mechanism to allow terminals connected to the TEED to perform communications by using a closed IP, enabling the TEED to provide a network address translation (NAT) function so that the TEED can perform data forwarding like a general NAT, without performing tunneling on a destination IP outside the closed IP section, to perform communication, and allowing a terminal located in an area where the TEED is not provided to directly establish a tunnel with the control server by using a client software to thereby perform communications with a terminal or a server connected to the TEED by using the closed IP.
    Type: Application
    Filed: December 8, 2009
    Publication date: November 3, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sun-Cheul Kim, Ho-Yong Ryu, Sung-Back Hong, Kyeong-Ho Lee
  • Publication number: 20110085552
    Abstract: Technology for forming a virtual private network (VPN) is provided. A VPN gateway that supports mobility with a connection node having a virtual home address (HoA) and a care of address (CoA) includes a mobility support unit, a data security unit, and a virtual address converter. When a packet is transferred from the connection node, the mobility support unit sustains a binding relationship between a home address (HoA) of the connection node and the changed CoA, and processes a mobility tunnel for the packet, thereby generating a first conversion packet. The data security unit performs a security test of the first conversion packet. The virtual address converter converts the HoA of the connection node, which is a source address of the first conversion packet in which the security test is complete, to a private network internal address that can be used in the VPN, thereby generating a second conversion packet.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 14, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seungwoo HONG, Jong Dae Park, Sung Kee Noh, Ho Yong Ryu, Kyeong Ho Lee, Seong Moon, Pyung-Koo Park, Ho Sun Yoon, Nam Seok Ko, Sun Cheul Kim, Soon Seok Lee, Sung Back Hong
  • Publication number: 20110082941
    Abstract: In order for a peer node to perform direct communication with a correspondent peer node in an Internet protocol network, the peer node receives a virtual address of the correspondent peer node from a server, and then when the peer node can directly set a tunnel with the correspondent peer node, the peer node sets a tunnel with the correspondent peer node, and when the peer node cannot directly set a tunnel with the correspondent peer node, the peer node sets a tunnel with a tunnel repeater. Thereafter, the peer node connects a virtual address of the correspondent peer node as route information to the tunnel. Thereby, a packet using a virtual address of the correspondent peer node as a destination is transmitted to the correspondent peer node through a predetermined tunnel.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sun Cheul Kim, Seong Moon, Ho Yong Ryu, Kyeong Ho Lee, Soon Seok Lee
  • Publication number: 20110069606
    Abstract: A communication node detects a communication fault thereof, and when a communication fault is detected, the communication node determines whether the communication node is included in a transmission path of a data packet with reference to a routing table and transmits the stored communication fault notification message to peripheral communication nodes.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 24, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong Dae Park, Ho Yong Ryu, Soon Seok Lee, Byung Seo Kim
  • Publication number: 20100272016
    Abstract: A method and system for supporting Internet protocol (IP) mobility independently of the IP version of a transport network are provided. The method includes providing a mobility control apparatus, which maps the home addresses of a plurality of mobile terminals, including first and second mobile terminals, and the Care-of-Addresses (CoAs) of the mobile terminals, and setting a first control tunnel between the mobility control apparatus and the first mobile terminal, the care-of-addresses varying from one transport network to another transport network; setting a second control tunnel between the mobility control apparatus and the second mobile terminal; and enabling the first and second mobile terminals to exchange a data packet with each other through the first and second control tunnels.
    Type: Application
    Filed: December 4, 2008
    Publication date: October 28, 2010
    Inventors: Nam Seok Ko, Ho Yong Ryu, Sung Back Hong, Young Beom Choi, Kyeong Ho Lee, Kyung Pyo Jun
  • Publication number: 20100262825
    Abstract: A security method in a server-based mobile IP system is provided. Specifically, in the security method, general data is securely exchanged in addition to a control message that is exchanged between a mobile node and a server or between mobile nodes. Specifically, provided is a method of securely exchanging data by using a mobile node including an mPAK execution module generating necessary keys by exchanging key information with the server while performing a mutual authentication process and negotiating the security policy; and a security module setting a security policy that is negotiated with the corresponding node and applying the security policy to data according to the set security policy when transmitting the data.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 14, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Ho Sun Yoon, Ho Yong Ryu, Sung Back Hong
  • Publication number: 20100260203
    Abstract: The present invention relates to tunneling an IPv6 packet through an IPv4 network. In using a tunneling method upon transmitting an IPv6 packet in an IP network, when destination nodes desired to be communicated are located within the same IPv6 prefix network, IPv6 prefix information is added for the management of a tunnel entry. Hence, tunneling information on terminals located within the same IPv6 prefix network can be managed as one tunnel entry. Accordingly, the time consumed when retrieving a tunnel entry can be reduced.
    Type: Application
    Filed: October 10, 2008
    Publication date: October 14, 2010
    Inventors: Seong Moon, Sung Back Hong, Ho Yong Ryu, Sun Cheul Kim, Pyung Koo Park, Ho Sun Yoon, Young Soo Shin
  • Publication number: 20100257188
    Abstract: A method for providing a service of downloading stereoscopic image data including first image data and second image data in a digital broadcasting system includes: generating information regarding a file name of each of the first image data and the second image data; and transmitting the first image data, the information regarding the file name of the first image data, the second image data, and the information regarding the file name of the second image data. The file name of the second image data includes a prefix indicating the second image data of the stereoscopic image data.
    Type: Application
    Filed: June 14, 2010
    Publication date: October 7, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun Cheul Kim, Pyung Koo Park, Seong Moon, Young Soo Shin, Ho Yong Ryu, Sung Back Hong
  • Patent number: 7058659
    Abstract: A method and an apparatus for managing a vast amount of file in a portable device. The file management apparatus of the portable device includes a disk engine which reads attribute information of a file recorded in a recording medium, an input unit which inputs a command for editing the stored attribute information, a controller which controls the portable device to record/reproduce the file corresponding to the read attribute information, and a display unit which displays the attribute information to allow an user to edit the attribute information. The attribute of the file recorded in the recording medium can be edited by an editing command, and each file is processed in accordance with the attribute information. Accordingly, the user can easily manage the vast amount of information.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: June 6, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-yong Ryu
  • Publication number: 20030018610
    Abstract: A method and an apparatus for managing a vast amount of file in a portable device. The file management apparatus of the portable device includes a disk engine which reads attribute information of a file recorded in a recording medium, an input unit which inputs a command for editing the stored attribute information, a controller which controls the portable device to record/reproduce the file corresponding to the read attribute information, and a display unit which displays the attribute information to allow an user to edit the attribute information. The attribute of the file recorded in the recording medium can be edited by an editing command, and each file is processed in accordance with the attribute information. Accordingly, the user can easily manage the vast amount of information.
    Type: Application
    Filed: April 19, 2002
    Publication date: January 23, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ho-Yong Ryu