Patents by Inventor Kazuyoshi Hoshino

Kazuyoshi Hoshino 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).

  • Patent number: 9246777
    Abstract: To analyze the cause if an event occurred to a plurality of monitoring targets. A monitoring computer 101 includes a general rule storing part 136 configured to store a general rule, wherein the general rule previously associates a first event which can occur in any of the plurality of monitoring targets and a second event which can cause the first event, an correlation rule generating part 129 configured to generate an correlation rule, wherein the correlation rule is created based on the general rule and configuration information, and in the case where a predetermined number or more of events corresponding to the second events are detected, the correlation rule indicates that an event corresponding to the first event will occur, and an analyzing part 125 configured to analyze a cause of an event indicated by the event information based on received event information and the correlation rule.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: January 26, 2016
    Assignee: HITACHI, LTD.
    Inventors: Kaori Murase, Masataka Nagura, Takayuki Nagai, Takaki Kuroda, Kazuyoshi Hoshino
  • Patent number: 9124531
    Abstract: A data communication apparatus to be coupled to a first network and a Multiprotocol Label Switching (MPLS) network, includes a receiving unit which receives a data including header information indicating a destination and first header information used to identify a first Virtual Private Network (VPN) in the first network. The apparatus also includes a transmitter which transmits data having added thereto a MPLS header information used to identify one of the plurality of second VPNs in the MPLS network, the MPLS header information corresponding to both the header information indicating the destination and the first header information used to identify the first VPN in the first network included in the received data.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: September 1, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Koji Wakayama, Shiro Tanabe, Noboru Endo
  • Publication number: 20140050226
    Abstract: A data communication apparatus to be coupled to a first network and a Multiprotocol Label Switching (MPLS) network, includes a receiving unit which receives a data including header information indicating a destination and first header information used to identify a first Virtual Private Network (VPN) in the first network. The apparatus also includes a transmitter which transmits data having added thereto a MPLS header information used to identify one of the plurality of second VPNs in the MPLS network, the MPLS header information corresponding to both the header information indicating the destination and the first header information used to identify the first VPN in the first network included in the received data.
    Type: Application
    Filed: October 25, 2013
    Publication date: February 20, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Koji Wakayama, Shiro Tanabe, Noboru Endo
  • Patent number: 8582587
    Abstract: A data communication apparatus to be coupled to a first network and a Multiprotocol Label Switching (MPLS) network, includes a receiving unit which receives a data including header information indicating a destination and first header information used to identify a first Virtual Private Network (VPN) in the first network. The apparatus also includes a transmitter which transmits data having added thereto a MPLS header information used to identify one of the plurality of second VPNs in the MPLS network, the MPLS header information corresponding to both the header information indicating the destination and the first header information used to identify the first VPN in the first network included in the received data.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Kojii Wakayama, Shiro Tanabe, Noboru Endo
  • Publication number: 20130212257
    Abstract: To analyze the cause if an event occurred to a plurality of monitoring targets. A monitoring computer 101 includes a general rule storing part 136 configured to store a general rule, wherein the general rule previously associates a first event which can occur in any of the plurality of monitoring targets and a second event which can cause the first event, an correlation rule generating part 129 configured to generate an correlation rule, wherein the correlation rule is created based on the general rule and configuration information, and in the case where a predetermined number or more of events corresponding to the second events are detected, the correlation rule indicates that an event corresponding to the first event will occur, and an analyzing part 125 configured to analyze a cause of an event indicated by the event information based on received event information and the correlation rule.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 15, 2013
    Applicant: HITACHI, LTD.
    Inventors: Kaori Murase, Masataka Nagura, Takayuki Nagai, Takaki Kuroda, Kazuyoshi Hoshino
  • Patent number: 8271667
    Abstract: A session management server, which is provided with a service determination table having a plurality of entries each indicating a service identifier in association with possible particular items of information which may be extracted from a session setup request packet, receives a session setup request packet issued from a client to a particular application server and determines whether the client terminal is authorized to receive an information service by referring to the determination table, in place of the particular application server. When the determination results in success, the session setup request packet is forwarded to the particular application server.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 18, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Hoshino, Kazuma Yumoto, Satoshi Kiyoto, Takashi Miyamoto, Yasunori Saigusa
  • Patent number: 8238555
    Abstract: Both a management server and a validation server are installed. Both a terminal and a terminal register setting information which is usable in an encrypted communication in the management server. When carrying out the encrypted communication, the management server searches the registered setting information for coincident setting information. The management server generates keys for the encrypted communications which can be used by the terminals, and delivers these generated keys in combination with the coincident setting information. The management server authenticates both the terminals in conjunction with the validation server. Since the terminals trust such results that the management server has authenticated the terminals respectively, these terminals need not authenticate the respective communication counter terminals.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: August 7, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Takata, Takahiro Fujishiro, Tadashi Kaji, Kazuyoshi Hoshino
  • Patent number: 8218769
    Abstract: An encrypted communication system is provided, in which an encryption key for use in encrypted communication and settings information for the encrypted communication are distributed to each of a plurality of communication devices performing encrypted communication within a group, and in which traffic generated by distributing the encryption key and the like can be reduced. In the encrypted communication system according to the present invention, information including a key for use in the intra-group encrypted communication or a seed which generates the key is distributed to the communication devices belonging to the group that are participating (e.g., logged in) in the intra-group encrypted communication.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: July 10, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Takata, Tadashi Kaji, Takahiro Fujishiro, Kazuyoshi Hoshino, Keisuke Takeuchi
  • Patent number: 8205074
    Abstract: In a data communication method and a data communication system, a session control message designating a destination server with identification information unique to application is transferred to the destination via a session management server. When an application program or encrypted communication software on a client issues a connection request designating a destination with identification information unique to application, the client or the session management server automatically converts the identification information into a desired resource identifier identifiable a domain to thereby determine a domain as the destination of the received connection request message.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: June 19, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Hoshino, Keisuke Takeuchi, Osamu Takata, Tadashi Kaji, Takahiro Fujishiro
  • Patent number: 8094337
    Abstract: To minimize risk of printing-out to a printer located at an improper base, where a network is established between the bases, terminal devices, a server, printers, and a management device which manages printers are provided. The management device manages position information of the printers installed in bases. Every time printing is requested, the management device extracts printer candidates located close to a terminal device and asks a user of the terminal device to select one of the printer candidates. The user visually confirms the installation locations of the extracted printer candidates included in a list and selects an appropriate printer for each printing. Accordingly, risk of erroneously printing using a printer installed in an improper base can be reduced.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: January 10, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Yoko Hashimoto, Takahiro Fujishiro, Tadashi Kaji, Akifumi Yato, Kazuyoshi Hoshino
  • Patent number: 8095676
    Abstract: The present invention is to prevent user's attribute information from being distributed, in the case where it is to be determined whether or not the attribute information (for example, age, address, and the like) of the user satisfies a service providing condition, when a communication session is established across multiple session managing servers. According to the present invention, attribute information of a user who is using a client logging in a session managing server, and attribute information of a service operating on the client are managed, a condition (SEP) to establish a communication session among multiple session managing servers related to the session establishment is shared, and the session managing server which manages the attribute information compares the attribute information and the SEP to make an access judgment, in order to determine whether or not the communication session is to be established.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: January 10, 2012
    Assignee: Hitachi Ltd.
    Inventors: Tadashi Kaji, Osamu Takata, Takahiro Fujishiro, Kazuyoshi Hoshino
  • Patent number: 8081758
    Abstract: When a cryptographic communicating part 208 of the communication support server 20 exchanges information with the information processing units 14, if the term of validity of a first key stored in a cryptographic key storing part 200 and corresponding to the identification information of the information processing unit 14 does not expire, the cryptographic communicating part 208 performs the cryptographic communication with the information processing unit 14 using the first key, without performing a process of authenticating the information processing units 14. When the term of validity of the first key expires or the first key corresponding to the identification information of the information processing units 14 is not stored, the key sharing part 202 shares the first key with the information processing units 14, and the cryptographic communicating part 208 performs the cryptographic communication with the information processing units 14 using a newly shared first key.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: December 20, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Takata, Takahiro Fujishiro, Tadashi Kaji, Kazuyoshi Hoshino
  • Publication number: 20110268129
    Abstract: A data communication apparatus to be coupled to a first network and a Multiprotocol Label Switching (MPLS) network, includes a receiving unit which receives a data including header information indicating a destination and first header information used to identify a first Virtual Private Network (VPN) in the first network. The apparatus also includes a transmitter which transmits data having added thereto a MPLS header information used to identify one of the plurality of second VPNs in the MPLS network, the MPLS header information corresponding to both the header information indicating the destination and the first header information used to identify the first VPN in the first network included in the received data.
    Type: Application
    Filed: July 8, 2011
    Publication date: November 3, 2011
    Applicant: HITACHI, LTD.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Koji Wakayama, Shiro Tanabe, Noboru Endo
  • Patent number: 8041822
    Abstract: A server device that represents a plurality of service provision servers implements authentication and a SIP message exchange with respect to a SIP server as a representative, and notifies a service provision server of client communication information that is acquired by the SIP message exchange. The service provision server communicates with a client on the basis of the client communication information that is notified from the representative server.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: October 18, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Hoshino, Tadashi Kaji, Osamu Takata, Takahiro Fujishiro, Kohei Sawada
  • Patent number: 8019996
    Abstract: To solve problems in that a load on a VPN device is large in a case where the number of terminal devices increases in encrypted communication using a VPN technique, and that only communication between the terminal device and the VPN device is encrypted, thus disabling end-to-end encrypted communication, a communication system is provided, including: a terminal device; a plurality of blades; and a management server that manages the blades, in which: the management server selects a blade, authenticates the terminal device and the selected blade, and mediates encrypted communication path establishment between the terminal device and the selected blade; the terminal device and the blade perform encrypted communication without the mediation of the management server; and the management server requests a validation server to authenticate each terminal.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: September 13, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yoko Hashimoto, Takahiro Fujishiro, Tadashi Kaji, Osamu Takata, Kazuyoshi Hoshino
  • Patent number: 8010793
    Abstract: A data communication method for forwarding a session control message designating a destination server with an IP address to the destination server via a session management server, wherein, when an application program or encrypted communication software on a client issues a connection request designating a destination server with an IP address, the client or the session management server automatically converts the IP address into a desired resource identifier identifiable a domain, thereby to determine the domain to which the received connection request message should be forwarded.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: August 30, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Hoshino, Keisuke Takeuchi, Osamu Takata, Tadashi Kaji, Takahiro Fujishiro
  • Patent number: 7983281
    Abstract: A method serves to compose a VPN (Virtual Private Network) over a plurality of networks, each of which is managed by a different Internet Service Provider (ISP). When a packet with a first capsule header used for composing a VPN in a first ISP network is transmitted to a second ISP network, a route for outputting the packet to the second ISP network is determined based on the information both in the capsule header and in the IP header. In addition, a second capsule header used for composing a VPN in the second ISP network is determined based on the above information.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Koji Wakayama, Shiro Tanabe, Noboru Endo
  • Patent number: 7984494
    Abstract: Provided is a computer system including: a first computer; a second computer including a second processor and a second memory; and a communication controller for controlling communication between the first and second computers, in which: upon reception of a packet from the first computer, the communication controller translates address information of the received packet to transfer the packet to the second computer; the second memory stores SA candidate information as SA information in which a part of the address information is unknown; and the second processor decrypts the packet encrypted by the first computer by using the SA candidate information upon reception of the encrypted packet from the first computer, and creates SA information based on the SA candidate information used for the decryption and the address information of the encrypted packet upon successful decryption of the encrypted packet.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Yoshizawa, Kazuma Yumoto, Kazuyoshi Hoshino
  • Patent number: 7984290
    Abstract: In an encryption communication using VPN technologies, a load on a VPN system becomes large if the number of communication terminals increases. When an external terminal accesses via an internal terminal an application server, processes become complicated because it is necessary to perform authentication at VPN and authentication at the application server. A management server is provided for managing external terminals, internal terminals and application servers. The management server authenticates each communication terminal and operates to establish an encryption communication path between communication terminals. Authentication of each terminal by the management server relies upon a validation server. When the external terminal performs encryption communication with the application server via the internal terminal, two encryption communication paths are established and used between the external terminal and internal terminal and between the internal terminal and application server.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yoko Hashimoto, Takahiro Fujishiro, Tadashi Kaji, Osamu Takata, Kazuyoshi Hoshino, Shinji Nakamura
  • Patent number: 7881311
    Abstract: A method serves to compose a VPN (Virtual Private Network) over a plurality of networks, each of which is managed by a different Internet Service Provider (ISP). When a packet with a first capsule header used for composing a VPN in a first ISP network is transmitted to a second ISP network, a route for outputting the packet to the second ISP network is determined based on the information both in the capsule header and in the IP header. In addition, a second capsule header used for composing a VPN in the second ISP network is determined based on the above information.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: February 1, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Sakamoto, Kazuyoshi Hoshino, Koji Wakayama, Shiro Tanabe, Noboru Endo