Patents by Inventor Yoji Ozawa

Yoji Ozawa 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: 20200379982
    Abstract: An information processing system includes a plurality of distributed ledger nodes provided to a plurality of organizations, and configured to verify a content of a transaction with each other and hold a history of the transaction in distributed ledgers provided to the organizations, a client node configured to transmit the transaction to the distributed ledger nodes, and a plurality of processing nodes provided to the organizations, and configured to execute verification target processing being processing that is targeted for verification on a virtual platform. The client node selects the distributed ledger nodes to perform the verification of the verification target processing and transmits the transaction including a request to execute the verification target processing to each of the selected distributed ledger nodes. When each selected node receives the transaction, the distributed ledger node causes the processing node in the organization to perform the verification and records the verification result.
    Type: Application
    Filed: March 13, 2020
    Publication date: December 3, 2020
    Applicant: HITACHI, LTD.
    Inventor: Yoji OZAWA
  • Publication number: 20200314078
    Abstract: A method includes: determining presence or absence of duplication processing by a node 1000, the node constituting each of a plurality of distributed ledger systems and managing identification information of call processing from a program on another distributed ledger system 1; and executing the call processing after deduplication of the call processing is executed based on a specific policy.
    Type: Application
    Filed: September 19, 2019
    Publication date: October 1, 2020
    Applicant: HITACHI, LTD.
    Inventors: Jun NAKAJIMA, Yoji OZAWA
  • Patent number: 10764412
    Abstract: A communication disabled time during a network failure can be shortened. An SW1 capable of generating a layer 3 packet from a received layer 2 frame and transmitting the generated layer 3 packet includes: a plurality of ports 200 which is capable of transmitting and receiving data; a layer 2 ring processing unit 203 which detects a failure of a network 3 connected via the ports 200; and a VXLAN processing unit 4 which generates a plurality of layer 3 packets from one layer 2 frame received via the ports 200 when the failure of the network 3 is detected by the layer 2 ring processing unit 203, and transmits the generated plurality of layer 3 packets to a network via the plurality of ports 200.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 1, 2020
    Assignee: HITACHI, LTD.
    Inventors: Kazuhiro Maeda, Yoji Ozawa
  • Patent number: 10579461
    Abstract: A log message grouping apparatus calculates a coincidence degree evaluation value E1 representing the degree of coincidence between minority words, which are relatively low occurrence frequency words, out of the words that form a log message and minority words in another log message. The log message grouping apparatus further calculates an occurrence degree evaluation value E2 representing the degree of occurrence of the combination of a classification value of a log message and the classification value of a past log message on the basis of the occurrence frequency of the combination of the classification values and calculates an association degree evaluation value E3 representing the degree of association between the log message and the past log message on the basis of the coincidence degree evaluation value E1 and the occurrence degree evaluation value E2.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 3, 2020
    Assignee: HITACHI, LTD.
    Inventors: Ken Akune, Yoji Ozawa, Junji Kinoshita
  • Publication number: 20200045149
    Abstract: A communication disabled time during a network failure can be shortened. An SW1 capable of generating a layer 3 packet from a received layer 2 frame and transmitting the generated layer 3 packet includes: a plurality of ports 200 which is capable of transmitting and receiving data; a layer 2 ring processing unit 203 which detects a failure of a network 3 connected via the ports 200; and a VXLAN processing unit 4 which generates a plurality of layer 3 packets from one layer 2 frame received via the ports 200 when the failure of the network 3 is detected by the layer 2 ring processing unit 203, and transmits the generated plurality of layer 3 packets to a network via the plurality of ports 200.
    Type: Application
    Filed: June 18, 2019
    Publication date: February 6, 2020
    Applicant: HITACHI, LTD.
    Inventors: Kazuhiro MAEDA, Yoji OZAWA
  • Publication number: 20190334831
    Abstract: Concepts and technologies are disclosed herein for creating cross-service chains of virtual network functions in a wide area network. A controller can receive a chain request from a requestor. The chain request can specify functionality that is to be included in a service chain. The functionality can include a first function and a second function. The controller can compute a route associated with the service chain. The route can specify a first site that hosts a first service that provides the first function and a second site that hosts a second service that provides the second function. A first virtual network function can be located at the first site and a second virtual network function can be located at the second site. The controller can configure edge devices and forwarding devices to various entities at the two sites to enable the cross-service virtual network function chain.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 31, 2019
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Abhigyan, Kaustubh Joshi, Richard Schlichting, Matti Hiltunen, Yoji Ozawa
  • Publication number: 20190257719
    Abstract: There is provided an abnormal-state detection system including: a processing execution unit that executes an application which performs information processing based on the received data after receiving the data sent from factory equipment; a data relation generation unit that generates a data association result which is information indicating the presence of relation between the data; an abnormal-state determination unit that determines whether or not the factory equipment is in an abnormal state which is a state other than a normal state which is a state where manufacturing of a product is actually performed, based on the data association result; a control unit that performs a control for preventing an influence of the application on the information processing based on a result of the determination; and a tag unit for tagging the data if the factory equipment is determined to be in the abnormal state.
    Type: Application
    Filed: September 12, 2018
    Publication date: August 22, 2019
    Applicant: HITACHI, LTD.
    Inventors: Yoji Ozawa, Yukinori Sakashita
  • Patent number: 10348638
    Abstract: Concepts and technologies are disclosed herein for creating cross-service chains of virtual network functions in a wide area network. A controller can receive a chain request from a requestor. The chain request can specify functionality that is to be included in a service chain. The functionality can include a first function and a second function. The controller can compute a route associated with the service chain. The route can specify a first site that hosts a first service that provides the first function and a second site that hosts a second service that provides the second function. A first virtual network function can be located at the first site and a second virtual network function can be located at the second site. The controller can configure edge devices and forwarding devices to various entities at the two sites to enable the cross-service virtual network function chain.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 9, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Abhigyan, Kaustubh Joshi, Richard Schlichting, Matti Hiltunen, Yoji Ozawa
  • Publication number: 20180351874
    Abstract: Concepts and technologies are disclosed herein for creating cross-service chains of virtual network functions in a wide area network. A controller can receive a chain request from a requestor. The chain request can specify functionality that is to be included in a service chain. The functionality can include a first function and a second function. The controller can compute a route associated with the service chain. The route can specify a first site that hosts a first service that provides the first function and a second site that hosts a second service that provides the second function. A first virtual network function can be located at the first site and a second virtual network function can be located at the second site. The controller can configure edge devices and forwarding devices to various entities at the two sites to enable the cross-service virtual network function chain.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Abhigyan, Kaustubh Joshi, Richard Schlichting, Matti Hiltunen, Yoji Ozawa
  • Publication number: 20180203757
    Abstract: A log message grouping apparatus calculates a coincidence degree evaluation value E1 representing the degree of coincidence between minority words, which are relatively low occurrence frequency words, out of the words that form a log message and minority words in another log message. The log message grouping apparatus further calculates an occurrence degree evaluation value E2 representing the degree of occurrence of the combination of a classification value of a log message and the classification value of a past log message on the basis of the occurrence frequency of the combination of the classification values and calculates an association degree evaluation value E3 representing the degree of association between the log message and the past log message on the basis of the coincidence degree evaluation value E1 and the occurrence degree evaluation value E2.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 19, 2018
    Applicant: HITACHI, LTD.
    Inventors: Ken AKUNE, Yoji OZAWA, Junji KINOSHITA
  • Patent number: 9363294
    Abstract: A management server which manages a tenant pattern being information for forming a tenant being an application system for executing a predetermined application by using computer resources within a computer system, the tenant pattern including a configuration item and an ID pool, the management server having: pattern parts information for managing the configuration item as a pattern part that forms the tenant pattern; validation rule information for storing a detail of validation processing for a composition of the tenant pattern; and the management server further comprising: a tenant pattern generation unit; a tenant designing unit for designing a composition of the tenant, and generating a configuration detail for actually building the tenant on the computer system; and a validation execution unit for executing the validation processing for the tenant pattern and the configuration detail based on the validation rule information.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: June 7, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Ozawa, Yukio Ogawa, Yoshiko Yasuda, Yosuke Himura
  • Publication number: 20160094393
    Abstract: A management apparatus that manages a network apparatus having a packet control function, wherein the network apparatus has configuration information that sets the control function, and wherein the management apparatus has: parameter information that manages settings of the control function of the network apparatus; and an inconsistent data detection module that obtains the configuration information from the network apparatus, and upon comparison of the configuration information with the parameter information, detects, as inconsistent data, information that does not match.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 31, 2016
    Inventors: Kosuke KANEKO, Yoji OZAWA, Junji KINOSHITA, Osamu TAKADA, Yukio OGAWA
  • Publication number: 20160043899
    Abstract: A management computer coupled to a network device comprises: a processor; and a storage unit that stores effect determination information that defines conditions for determining an effect of an operation by the network device, the conditions being applied to a combination of setting items for the network device, and wherein the processor executes: to select, from among the combination of setting items, a specific combination matching a combination of a first setting item for the network device and a second setting item associated with the first setting item; to determine whether or not the combination of the first setting item and the second setting item satisfies the conditions applied to the specific combination if the specific combination is selected; to identify the presence or absence of an effect resulting from an operation of the network device on the basis of determination results; and to output identification results.
    Type: Application
    Filed: August 6, 2015
    Publication date: February 11, 2016
    Inventors: Yoji OZAWA, Yukio OGAWA, Junji KINOSHITA, Kosuke KANEKO, Osamu TAKADA
  • Publication number: 20150372911
    Abstract: A communication path management method has, servers that are coupled to communication devices and provide software, terminals that are coupled to the communication devices and use the software, and a network that couples the multiple communication devices, wherein the communication path management method establishes paths along which the terminals access the servers. The communication path management method comprises: a first step in which a management computer that is coupled to the network and that manages the communication devices and servers allocates, to each of a plurality of logical aggregate groups, a combination of terminals, to which the same server provides the software, and the software executed by the terminals; and a second step in which the management computer establishes communication paths of the communication devices for each of the aggregate groups.
    Type: Application
    Filed: January 31, 2013
    Publication date: December 24, 2015
    Inventors: Hitoshi YABUSAKI, Kunihiko TOUMURA, Yoji OZAWA, Takatoshi KATO
  • Publication number: 20150180715
    Abstract: There is provided a method of constructing a logical network which determines a network apparatus of a deployment location and a middlebox apparatus when the logical network is constructed on a physical network to which the network apparatus, the middlebox apparatus, and a physical server are coupled, in which an abstract configuration of the logical network and logical network information including a performance requirement with respect to a configuration element are received, and the network apparatus which become a deployment location of the logical network and the middlebox apparatus are determined according to the abstract configuration of the logical network and the performance requirement.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 25, 2015
    Inventors: Yoji OZAWA, Jyunji KINOSHITA, Osamu TAKADA
  • Patent number: 8976681
    Abstract: A network system, management server, and OAM test management method for grouping the virtual networks, selecting a test target for each group, and lowering the network load and the operating load in the OAM testing. Grouping the multiple virtual networks based on their physical topology and selecting a representative virtual network for each group, allows selecting a test target virtual network from among the representative virtual networks for the virtual network selected by the operator and executing tests.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 10, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Ozawa, Eri Kawai, Akihiro Koizumi
  • Publication number: 20140337471
    Abstract: A system for assisting migration between first and second information processing systems includes a table retaining communication information on communication between first nodes constituting the first information processing system; a table retaining a design requirement being a condition for a second node constituting the second information processing system; an identifier configured to identify the communication information on the first node which is to be migrated; a comparator configured to acquire the design requirement associated with the identified communication information; a mapper configured to determine based on the design requirement whether addition or deletion of the second node is necessary or not; and a generator configured to generate tenant design properties based on the determination on whether addition or deletion is necessary or not, the tenant design properties being information necessary for the migration and containing a configuration of the second node constituting the second informat
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Applicant: HITACHI, LTD.
    Inventors: Yoshiko YASUDA, Yosuke HIMURA, Yoji OZAWA
  • Patent number: 8862939
    Abstract: A network system configured from a test device that executes a test including a continuity test and a performance test of a network configured from a plurality of transfer devices and a management server that requests an execution of the test for the test device, in this way, one or more backup session used for executing the test is selected from a plurality of sessions, the test is executed for a processing interval in a success, a next test is executed by the backup session when the processing time for the test exceeds over a specified time, thereby, a large number of tests can be executed and the test can be executed regularly even when the processing time becomes longer caused by a failure etc.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: October 14, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Ozawa, Eri Kawai, Akihiro Koizumi
  • Patent number: 8805976
    Abstract: A reservation processing is executed according to the configuration request to VPN and network device to inform a user's terminal of scheduled period. In a network system including plural network devices for transmitting a packet and a management server, plural logical networks (VPNs) are formed on the plural network devices. The management server receives a configuration request including configuration data for VPN and configuration desired time from a user's terminal to generate the configuration data for the network device from the configuration data for the VPN. The management server refers to a configuration reservation table to confirm whether free time is available in the same period about all target network devices. If free time is available, the management server makes configuration reservation and configures the target network device in the reserved time. The management server notifies the user's terminal of the reserved time.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 12, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Ozawa, Kazuma Yumoto, Tatsuhiko Miyata, Eri Kawai
  • Publication number: 20140165136
    Abstract: A management server which manages a tenant pattern being information for forming a tenant being an application system for executing a predetermined application by using computer resources within a computer system, the tenant pattern including a configuration item and an ID pool, the management server having: pattern parts information for managing the configuration item as a pattern part that forms the tenant pattern; validation rule information for storing a detail of validation processing for a composition of the tenant pattern; and the management server further comprising: a tenant pattern generation unit; a tenant designing unit for designing a composition of the tenant, and generating a configuration detail for actually building the tenant on the computer system; and a validation execution unit for executing the validation processing for the tenant pattern and the configuration detail based on the validation rule information.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 12, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yoji OZAWA, Yukio OGAWA, Yoshiko YASUDA, Yosuke HIMURA