Patents by Inventor Yasuhiro Katsube

Yasuhiro Katsube 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: 20140380470
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Application
    Filed: July 28, 2014
    Publication date: December 25, 2014
    Applicants: TOSHIBA AMERICA RESEARCH, INC., ERICSSON INC.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
  • Patent number: 8792454
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: July 29, 2014
    Assignees: Toshiba America Resesarch, Inc., Telcordia Inc.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
  • Patent number: 8694829
    Abstract: A first confirmation unit performs a first confirmation of confirming presence of a connection to a correspondent node in a first communication layer, presence of a connection to a correspondent node in a second communication layer, and presence of a connection to a correspondent node in a third communication layer. A locating unit locates a failure point in communication based on a result of the first confirmation. An output unit outputs a result of the location.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: April 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Tanaka, Kotaro Ise, Yasuhiro Katsube
  • Patent number: 8688834
    Abstract: According to some embodiments, systems and methods for binding dynamic host configuration and network access authentication are provided related to, inter alia, interactions between a PAA (PANA Authentication Agent) and a DHCP (Dynamic Host Configuration Protocol) server, such as, e.g., for synchronization between the PANA SA state and the DHCP SA state, such as, e.g., maintaining synchronization when a connection is lost. In some embodiments, systems and methods for binding network bridge and network access authentication are also provided related to, inter alia, interactions between a PAA and a layer-2 switch, such as, e.g., for avoiding service thefts and the like (such as, e.g., MAC address and/or IP address spoofing) in the context of, e.g., the above. In some other embodiments, systems and methods for bootstrapping multicast security from network access authentication protocol are also provided related to, inter alia, key management for protected IP multicast streams, such as, e.g.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: April 1, 2014
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Kensaku Fujimoto, Yasuhiro Katsube, Yoshihiro Oba
  • Publication number: 20120287904
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 15, 2012
    Applicants: TELCORDIA INC., TOSHIBA AMERICA RESEARCH, INC.
    Inventors: Kenichi TANIUCHI, Tao ZHANG, Prathima AGRAWAL, Ashutosh DUTTA, Sunil MADHANI, Shinichi BABA, Kensaku FUJIMOTO, Yasuhiro KATSUBE, Toshikazu KODAMA, Yoshihiro OHBA
  • Patent number: 8243687
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: August 14, 2012
    Assignees: Toshiba America Research, Inc., Telcordia, Inc.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
  • Patent number: 8139551
    Abstract: The present invention provides improved quality of service through data transmission rate control in a network. Data rate control may be in the downlink or uplink direction and may be statically or dynamically configured. Rate control may be implemented at varying points in the network including but not limited to at the wireless host, at the access point, at a separate device such as a server or at a separate location within the network. In one example of the present invention, a rate enforcement function is provided for identifying data packets to be enforced or identifying mapping between each packet and corresponding access point. Also, a rate decision function is also provided for determining the data rate to be enforced for each of the access points or each of the wireless hosts.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: March 20, 2012
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yasuhiro Katsube, Shinichi Baba, Farooq M Anjum, Moncef Elaoud
  • Publication number: 20110249653
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Application
    Filed: June 21, 2011
    Publication date: October 13, 2011
    Applicants: TELCORDIA TECHNOLOGIES INC., TOSHIBA AMERICA RESEARCH INC. (TARI)
    Inventors: Kenichi TANIUCHI, Tao ZHANG, Prathima AGRAWAL, Ashutosh DUTTA, Sunil MADHANI, Shinichi BABA, Kensaku FUJIMOTO, Yasuhiro KATSUBE, Toshikazu KODAMA, Yoshihiro OHBA
  • Patent number: 7978655
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: July 12, 2011
    Assignees: Toshiba America Research Inc., Telcordia Technologies, Inc.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
  • Patent number: 7747753
    Abstract: A packet transfer scheme in a network system capable of realizing a high speed, large capacity inter-network communication under an internet environment. A network interconnection apparatus (router) has a memory for storing a correspondence relationship between a virtual connection used in receiving a packet from one logical network and a virtual connection used in transmitting a packet to another logical network, and a transfer at a datalink layer is carried out according to the registered correspondence relationship, to effectively form a bypass pipe capable of transferring a packet by an datalink layer level processing alone over a plurality of networks from the transmission terminal to the destination terminal, so that a high speed packet transfer between networks can be realized.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 29, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Nagami, Junko Ami, Yasuhiro Katsube, Takeshi Saito, Hiroshi Esaki
  • Publication number: 20100125749
    Abstract: A first confirmation unit performs a first confirmation of confirming presence of a connection to a correspondent node in a first communication layer, presence of a connection to a correspondent node in a second communication layer, and presence of a connection to a correspondent node in a third communication layer. A locating unit locates a failure point in communication based on a result of the first confirmation. An output unit outputs a result of the location.
    Type: Application
    Filed: September 16, 2009
    Publication date: May 20, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki Tanaka, Kotaro Ise, Yasuhiro Katsube
  • Patent number: 7385967
    Abstract: A packet transfer scheme in a network system capable of realizing a high speed, large capacity inter-network communication under an internet environment. A network interconnection apparatus (router) has a memory for storing a correspondence relationship between a virtual connection used in receiving a packet from one logical network and a virtual connection used in transmitting a packet to another logical network, and a transfer at a datalink layer is carried out according to the registered correspondence relationship, to effectively form a bypass pipe capable of transferring a packet by an datalink layer level processing alone over a plurality of networks from the transmission terminal to the destination terminal, so that a high speed packet transfer between networks can be realized.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: June 10, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Nagami, Junko Ami, Yasuhiro Katsube, Takeshi Saito, Hiroshi Esaki
  • Patent number: 7349378
    Abstract: Aspects of the invention provide a method and system for managing or coordinating data transmission in a Local Area Network (LAN) such that Quality of Service (QoS) concerns are met. A LAN resource manager (LRM) is provided for managing the LAN resources by providing solutions for providing users with several levels of QoS. Once the LRM admits a user at a certain QoS level, the level is assured within the LAN for as long as the user is in the LAN. A user may submit a request to transmit data to the LRM. The LRM may determine if time allocation is possible and allocate the time slots for data transmission. The LRM may send time slot allocation information to an Access Server in a LAN, which may inform the user of the time slot allocation and prepare a queue according to the slot allocation information.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: March 25, 2008
    Assignees: Toshiba America Research, Inc., Telcordia Technologies
    Inventors: Moncef Elaoud, Abhrajit Ghosh, Ravichander Vaidyanathan, Prathima Agrawal, Toshikazu Kodama, Yasuhiro Katsube
  • Patent number: 7120145
    Abstract: A node device and a label switched path loop detection method which are capable of detecting a label switched path loop efficiently and quickly are disclosed. In a node device for carrying out the label switching, an ingress node information is included in a message that is to be successively transmitted from the upstream side in order to set up a label switched path, and the fact that the message with the same ingress node information for the same packet flow will be received from a previous hop node that is different from before if the label switched path has a loop formed thereon is utilized. Also, at a time of transmitting a message for the purpose of setting up a label switched path, if a node at which the label switched path for that packet flow already exists on the upstream or downstream side is encountered, this already existing label switched path is traced along the same or opposite direction as the flow, and the label switched path is set up if no loop is detected after tracing to the end.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: October 10, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Ohba, Junichi Takahashi, Shigeo Matsuzawa, Yasuhiro Katsube
  • Publication number: 20060036733
    Abstract: According to some embodiments, systems and methods for binding dynamic host configuration and network access authentication are provided related to, inter alia, interactions between a PAA (PANA Authentication Agent) and a DHCP (Dynamic Host Configuration Protocol) server, such as, e.g., for synchronization between the PANA SA state and the DHCP SA state, such as, e.g., maintaining synchronization when a connection is lost. In some embodiments, systems and methods for binding network bridge and network access authentication are also provided related to, inter alia, interactions between a PAA and a layer-2 switch, such as, e.g., for avoiding service thefts and the like (such as, e.g., MAC address and/or IP address spoofing) in the context of, e.g., the above. In some other embodiments, systems and methods for bootstrapping multicast security from network access authentication protocol are also provided related to, inter alia, key management for protected IP multicast streams, such as, e.g.
    Type: Application
    Filed: October 29, 2004
    Publication date: February 16, 2006
    Applicant: Toshiba America Research, Inc.
    Inventors: Kensaku Fujimoto, Yasuhiro Katsube, Yoshihiro Oba
  • Patent number: 6999419
    Abstract: A communication resource management scheme capable of guaranteeing the communication quality with respect to the flow while not requiring the processing for each flow to nodes other than edge nodes is disclosed. The edge node stores an information for obtaining an available amount of communication resources that can be newly allocated in the network to one set of flows which share at least a route from that edge node to an egress node of the network.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: February 14, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kataro Ise, Yoshimitsu Shimojo, Yasuhiro Katsube
  • Publication number: 20050163079
    Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.
    Type: Application
    Filed: July 21, 2004
    Publication date: July 28, 2005
    Applicants: Toshiba America Research Inc. (TARI), Telcordial Technologies, Inc.
    Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba, Sunil Madhani
  • Publication number: 20050100025
    Abstract: A packet transfer scheme in a network system capable of realizing a high speed, large capacity inter-network communication under an internet environment. A network interconnection apparatus (router) has a memory for storing a correspondence relationship between a virtual connection used in receiving a packet from one logical network and a virtual connection used in transmitting a packet to another logical network, and a transfer at a datalink layer is carried out according to the registered correspondence relationship, to effectively form a bypass pipe capable of transferring a packet by an datalink layer level processing alone over a plurality of networks from the transmission terminal to the destination terminal, so that a high speed packet transfer between networks can be realized.
    Type: Application
    Filed: December 17, 2004
    Publication date: May 12, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi Nagami, Junko Ami, Yasuhiro Katsube, Takeshi Saito, Hiroshi Esaki
  • Patent number: RE41772
    Abstract: A router device realizing a datagram transfer method for improving the datagram transfer efficiency by ascertaining the transfer target and/or the requested quality of service without referring to the datagram content. The router device has network interfaces connected with networks including at least one virtual connection oriented network, a table for registering a correspondence between a virtual connection identifier and a transfer target network interface and/or a quality of service, a connection identifier analysis unit for determining a transfer target network interface and/or a quality of service for a datagram entered from one virtual connection, by referring to the table according to a virtual connection identifier of that one virtual connection. The datagram can be transferred to the determined transfer target network interface, while applying a priority control for datagrams to be transferred by the router device according to the determined quality of service.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: September 28, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Nagami, Yasuhiro Katsube
  • Patent number: D859322
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: September 10, 2019
    Assignee: Omron Corporation
    Inventors: Manabu Takahashi, Kazuyuki Tsukimori, Shinya Katsube, Kokichi Tobita, Yasuhiro Tanoue, Yuki Yamamoto