Patents Assigned to Toshiba America Research, Inc.
  • Patent number: 8046829
    Abstract: A system and method is disclosed for dynamically and securely establishing a tunnel for a mobile device. In the preferred embodiments, the system and method operate to dynamically assign one or more tunnel endpoint addresses to a client which is not on the same IP-link as an authentication agent depending on an authentication result based on using an authentication protocol source port number in order to address communications.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: October 25, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technology, Inc.
    Inventor: Yoshihiro Oba
  • 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: 8036192
    Abstract: In some embodiments, a method is disclosed involving a mobile device discovery and use of target wireless networks which are at least partly within a coverage area of another wireless network which provides location information which includes: acquiring data from a plurality of said target wireless networks; acquiring location information from said another wireless network; mapping said data from said plurality of said target wireless networks with said location information; and selecting one of said plurality of target wireless networks based on said mapped data.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: October 11, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Raziq Yaqub, Tao Zhang
  • Patent number: 8036176
    Abstract: A system and method for performing MIH pre-authentication, which includes providing support for both direct and/or indirect pre-authentication and providing support for both network-initiated and mobile-initiated pre-authentication.
    Type: Grant
    Filed: June 8, 2008
    Date of Patent: October 11, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Subir Das
  • Publication number: 20110243147
    Abstract: A network-on-chip router which includes an input buffer, an input controller connected to said input buffer, an arbiter connected to said input controller, a crossbar connected to said arbiter and said input buffer, and an output buffer connected to said crossbar. The network-on-chip router minimizes propagation time of data through the router by ensuring that the propagation delay of data through an input buffer is less than the combined propagation delay of data through an input controller and arbiter.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Applicant: TOSHIBA AMERICA RESEARCH, INC.
    Inventor: Bipul C. Paul
  • Patent number: 8014819
    Abstract: A system and method comprising a framework configured to enable wireless devices to intelligently and simultaneously use multiple wireless interfaces of the wireless devices.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: September 6, 2011
    Assignees: Toshiba America Research, Inc, Telcordia Technologies, Inc.
    Inventors: Kyriakos Manousakis, Praveen Gopalakrishnan, David Famolari, Eric Van Den Berg
  • Patent number: 8009626
    Abstract: Unique temporary MAC addresses are calculated by mobile devices connected to wireless networks, using access point advertising information in combination with the permanent MAC address of the mobile device. The mobile devices use a hash function to construct a bit sequence from which a temporary MAC address can be extracted. The MAC address is unique over the entire region in which the mobile device can operate, without necessity of any coordination or negotiation between various access points of the region.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: August 30, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Farooq M. Anjum
  • Patent number: 8006089
    Abstract: The preferred embodiments provide a novel system and method for reducing authentication delay of a mobile node with a network that includes: employing two EAP runs concurrently to reduce an overall authentication delay. In some embodiments, the two EAP runs are employed for authenticating a particular device identifier of a PaC. In some illustrative embodiments, the two EAP runs are employed for authenticating a particular device identifier of a PaC in relation to connecting to multiple ISPs at the same time.
    Type: Grant
    Filed: November 12, 2006
    Date of Patent: August 23, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Yoshihiro Ohba
  • Patent number: 7995368
    Abstract: Embodiments of the present invention disclose a memory architecture for optimizing memory performance and size. Memory optimization is realized by configuring the memory to a particular logic state; that is, restricting memory data storage to either logic “0” or “1.” The opposite logic state, “1” or “0,” can be available through initialization and, therefore, may be presumed. Accordingly, the presumed, initialized logic state is available unless the configured logic state in memory changes the initialized data during memory access. Memory size reduction is realized by restricting physical memory to contain only cells that store data. Memory size can be further reduced by eliminating redundant data rows and columns. By reducing memory size, processing speed can be enhanced and power consumption reduced relative to conventional memory structures.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: August 9, 2011
    Assignee: Toshiba America Research, Inc.
    Inventor: Bipul C. Paul
  • 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: 7975300
    Abstract: The present invention, among other things, obviates the effects of an attack on a wireless network through appropriate isolation and recovery. An aspect of the present invention can include a system and method of isolating a victim of malicious behavior in a wireless access network, and in particular WLAN networks. By having software on the victim's device, the system provides the capability of recovering the victim from the effects of the intruder, and prevents the victim from being affected by subsequent attacks by the intruder. The preferred embodiments include two key components: a local monitor and a global monitor.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: July 5, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Byungsuk Kim, Farooq Anjum, Subir Das, Praveen Gopalakrishnan, Latha Kant
  • Patent number: 7974602
    Abstract: A system and method are provided by which a network operator is able to detect fraudulent use of a subscriber's terminal, regardless of whether or not the subscriber is aware of the fraudulent use of her terminal. Detecting unauthorized terminal use in a wireless network includes recording a history of terminal location and registration patterns, analyzing the recorded history of location and registration patterns of the terminal, monitoring current location and registration patterns of the terminal, and requesting clarification when a deviation between said statistical analysis of the location and registration patterns of said terminal and said current location and registration patterns of said terminal is detected.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: July 5, 2011
    Assignees: Toshiba America Research Inc., Telcordia Technologies, Inc.
    Inventors: Prathima Agrawal, Nobuyasu Nakjima, Yoshihiro Ohba, Faramak Vakil
  • Patent number: 7948918
    Abstract: This document describes, e.g., a system and method for minimizing superfluous signaling traffic and for minimizing data processing pressures on a network including a network information repository (NIR), comprising: having mobile stations that enter a network domain compare and detect inconsistencies in network information received through different sources and report those inconsistenci to the NIR; having the NIR update a cell broadcast controller (CBC)/BMSC with said network information; and having the CBC/BMSC broadcast or multicast the updated information.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: May 24, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Raziq Yaqub
  • Patent number: 7936719
    Abstract: The present invention relates to the handing off without packet loss, from a mobile device traveling from a current point of attachment to a new point of attachment, by providing a copy and forward module in association with the current point of attachment. The copy and forward module copies and stores packets that are being transmitted to a mobile node while the mobile node is in transition from the current point of attachment to the new point of attachment. The copy and forward module maintains a list of addresses as the last known contact addresses of the mobile node, and the mobile node's initial copy request contains an initial contact address of the mobile node. Subsequent copy requests are used to add or delete addresses to the list, and carry a per-address flag to indicate whether the address is to be added or deleted from the list.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: May 3, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Victor Fajardo, Yoshihiro Oba, Kenichi Taniuchi, Ashutosh Dutta
  • Publication number: 20110085463
    Abstract: In some embodiments, a system and method for substantially real-time comparison of quality of interfaces by mobile devices over heterogeneous networks is disclosed. The method can be performed using a dynamic and rapid comparison by distributed hosts, using a minimal number of injected network packets, using minimal path quality metrics, which path quality metrics are independent of how a Qol is measured, and in a manner suitable for both wireline and wireless networks.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 14, 2011
    Applicants: TOSHIBA AMERICA RESEARCH, INC., TELCORDIA TECHNOLGIES, INC.
    Inventors: Eric van den Berg, Sunil Madhani, Tao Zhang
  • Publication number: 20110063905
    Abstract: A multivalued memory device which includes a first multivalued memory transistor and a second multivalued memory transistor, wherein each transistor has a channel made from at least one carbon nanotube or nanowire, wherein data is stored by varying the number of carbon nanotubes or nanowires used in the channel, wherein the channel is the at least one carbon nanotube or nanowire which allows current to flow through it.
    Type: Application
    Filed: September 15, 2009
    Publication date: March 17, 2011
    Applicant: TOSHIBA AMERICA RESEARCH, INC.
    Inventor: Bipul C. Paul
  • Patent number: 7904089
    Abstract: Data packets are transmitted from a first access network to a first interface of a multiple interface device (MID), and identical data packets are transmitted concurrently from a second access network to a second interface of the MID. Some of the data packets that are transmitted to the MID from the first access network are not received by the first interface. The MID inspects identifiers of data packets from the first and second interfaces in order to send to the application a stream including all of the data packets. For example, the MID sends to the application the data packets from the first interface, buffers the data packets from the second interface, and sends data packets from the buffer to the application upon detecting that data packets in the buffer were transmitted to the first interface but not received by the first interface.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: March 8, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: David Famolari
  • Patent number: 7899592
    Abstract: This document describes, among other things, a systems and methods for monitoring vehicle conditions via cellular networks.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: March 1, 2011
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventor: Raziq Yaqub
  • Patent number: 7860019
    Abstract: Systems and methods for mobile peer-to-peer information sharing are disclosed. With the preferred systems and methods, mobile users and devices collect information about networks that they visit, and carry that information as they move to new networks. Mobile users and/or devices then share such information directly with each other.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: December 28, 2010
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Tao Zhang, Eric Van Den Berg, Sunil Madhani
  • Patent number: 7860978
    Abstract: In some illustrative embodiments, an IP-layer based network selection and multihoming method is provided that enables a flexible and secure dynamic selection of one or more serving networks for use by a client node. The method is independent of any link-layer technology. A serving network can be an ISP network, a NAP network exchange facility, a VLAN, or the like. Network information is advertised to a client node, the client node is authenticated and authorized for use of an access router, and a secure tunnel is established between the client node and the access router. The method can be implemented by using standard protocols, and can work over any existing or future link-layer technologies that are able to carry IP datagrams, without any modification.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: December 28, 2010
    Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.
    Inventors: Yoshihiro Oba, Shinichi Baba