Patents by Inventor Yusuke Hirakawa
Yusuke Hirakawa 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: 20220084309Abstract: A support information generating device includes a processor configured to: obtain first related information including a plurality of first captured images sequentially captured in chronological order, the plurality of first captured images being associated respectively with first captured position information indicating captured positions at which the first captured images are captured; analyze the plurality of first captured images; recognize a specific facility captured in at least one first captured image of the plurality of first captured images; determine a classification of the specific facility captured in the first captured image; generate first facility classification information indicating the classification; and generate support information including the first facility classification information and first facility position information associated with each other, the first facility position information indicating a position of the specific facility based on the first captured position information aType: ApplicationFiled: December 1, 2021Publication date: March 17, 2022Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Kazutaka NARA, Katsuki SUEMATSU, Junya HIRANO, Yusuke HIRAKAWA, Takuya KIDO, Takashi WATANABE, Jun HORI
-
Patent number: 9058305Abstract: A remote copy system includes: a first storage system having a first logical volume accompanied with a first plurality of disk drives in the first storage system; a second storage system having a second logical volume, which is a virtual volume not accompanied with a second plurality of disk drives in the second storage system, the virtual volume configuring a first remote copy pair with the first logical volume; and a third storage system having a third logical volume accompanied with a third plurality of disk drives in the third storage system, the third logical volume configuring a second remote copy pair with the virtual volume and storing a copied data of data stored in the first logical volume. If the second storage system receives write data sent from the first storage system to the virtual volume, the second storage system transfers the write data to the third logical volume.Type: GrantFiled: June 28, 2012Date of Patent: June 16, 2015Assignee: Hitachi, Ltd.Inventors: Ryusuke Ito, Yusuke Hirakawa, Yoshihiro Asaka, Takashi Kaga, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Patent number: 8943025Abstract: A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.Type: GrantFiled: October 21, 2013Date of Patent: January 27, 2015Assignee: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Publication number: 20140046901Abstract: A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.Type: ApplicationFiled: October 21, 2013Publication date: February 13, 2014Applicant: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Patent number: 8566284Abstract: A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.Type: GrantFiled: July 20, 2012Date of Patent: October 22, 2013Assignee: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Patent number: 8495319Abstract: A data processing system includes a first storage system that is connected to a host device and sends and receives data to and from the host device; a second storage system that is connected to the first storage system and receives data from the first storage system; and a third storage system that is connected to the first storage system and receives data from the first storage system. The first storage system, the second storage system and the third storage system are arranged to be changeable between a first status including first and second copy pairs and a second status including a third copy pair in response to a predetermined condition at the first storage system.Type: GrantFiled: October 31, 2011Date of Patent: July 23, 2013Assignee: Hitachi, Ltd.Inventors: Kazuhito Suishu, Yusuke Hirakawa, Yoshihiro Asaka
-
Patent number: 8397041Abstract: Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a target volume. Once data is received from a host, each of the plural storage systems creates write-data management information having sequential numbers and reference information and sends, to one of the primary storage systems, the data, sequential number and reference information. Each of the secondary storage systems records reference information corresponding to the larges sequential number among serial sequential numbers and stores, in a target volume in an order of sequential numbers, data corresponding to reference information having a value smaller than the reference information based on the smallest value reference information among reference information recorded in each of the plural secondary storage systems.Type: GrantFiled: January 30, 2012Date of Patent: March 12, 2013Assignee: Hitachi, Ltd.Inventors: Hiroshi Arakawa, Takashige Iwamura, Kenta Ninose, Yusuke Hirakawa
-
Patent number: 8375000Abstract: In a system in which data employed by a computer is stored in a storage system, the storage system transfers this data to another storage system and a copy of the data is maintained in the other storage system. The consistency of the copy is maintained even when data is written, to the storage system by a computer, without having a write time applied. A source storage system, when a write time is applied to a write request, records the write time and applies this write time to the received write data and, when no write time is applied, applies the recorded write time to the received write data and transfers the write data with this write time applied thereto, to a target storage system. The target storage system stores the write data in a logical volume in the target storage system in accordance with the write time.Type: GrantFiled: April 3, 2012Date of Patent: February 12, 2013Assignee: Hitachi, Ltd.Inventors: Hiroshi Arakawa, Kenta Ninose, Yoshihiro Asaka, Yusuke Hirakawa
-
Patent number: 8332361Abstract: A first storage subsystem 100A includes a first storage device 6A1 and one or more second storage devices 6A2, 6A3. A second storage subsystem 100B comprises a third storage device 6B1 and a fourth storage device 6B2. A third storage subsystem 100C comprises a fifth storage device 6C1 and a sixth storage device 6C2. The first storage subsystem 100A generates a data set, stores the generated data set in the second storage devices 6A2, 6A3, and transmits the data set to the second and third storage subsystems 100B, 100C. Each of the second and third storage subsystems 100B, 100C stores the received data set in the third storage device 6B1 or fifth storage device 6C1, reads a data set from the third or fifth storage device 6B1, 6C1, and stores the write data within the data set in the fourth storage device 6B2 or sixth storage device 6C2.Type: GrantFiled: December 15, 2011Date of Patent: December 11, 2012Assignee: Hitachi, Ltd.Inventors: Toro Suzuki, Yusuke Hirakawa, Yoshihiro Asaka, Shuji Kondo
-
Publication number: 20120311252Abstract: A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.Type: ApplicationFiled: July 20, 2012Publication date: December 6, 2012Applicant: HITACHI, LTD.Inventors: Yusuke Hirakawa, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Patent number: 8316198Abstract: A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A, and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal.Type: GrantFiled: May 16, 2012Date of Patent: November 20, 2012Assignee: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Kazuhito Suishu, Yoshihiro Asaka
-
Publication number: 20120290787Abstract: A remote copy system includes: a first storage system having a first logical volume accompanied with a first plurality of disk drives in the first storage system; a second storage system having a second logical volume, which is a virtual volume not accompanied with a second plurality of disk drives in the second storage system, the virtual volume configuring a first remote copy pair with the first logical volume; and a third storage system having a third logical volume accompanied with a third plurality of disk drives in the third storage system, the third logical volume configuring a second remote copy pair with the virtual volume and storing a copied data of data stored in the first logical volume. If the second storage system receives write data sent from the first storage system to the virtual volume, the second storage system transfers the write data to the third logical volume.Type: ApplicationFiled: June 28, 2012Publication date: November 15, 2012Applicant: HITACHI, LTD.Inventors: Ryusuke Ito, Yusuke Hirakawa, Yoshihiro Asaka, Takashi Kaga, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Publication number: 20120226878Abstract: A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A, and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal.Type: ApplicationFiled: May 16, 2012Publication date: September 6, 2012Inventors: Yusuke HIRAKAWA, Kazuhito Suishu, Yoshihiro Asaka
-
Patent number: 8250240Abstract: A remote copy system includes a plurality of storage systems. Each first storage system assigns a sequential number to write data received from the host and sends the write data with the sequential number to the second storage system. One of the first storage systems defers the processing of the write request received from the host and instructs each of the first storage systems to create a marker that includes a sequential number that is a marker number. The second storage systems receive the marker from the first storage system and store the marker number included in the marker.Type: GrantFiled: April 6, 2010Date of Patent: August 21, 2012Assignee: Hitachi, Ltd.Inventors: Hiroshi Arakawa, Kenta Ninose, Yoshihiro Asaka, Yusuke Hirakawa
-
Patent number: 8239344Abstract: A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.Type: GrantFiled: March 8, 2007Date of Patent: August 7, 2012Assignee: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Patent number: 8234471Abstract: A remote copy system includes: a first storage system having a first logical volume accompanied with a first plurality of disk drives in the first storage system; a second storage system having a second logical volume, which is a virtual volume not accompanied with a second plurality of disk drives in the second storage system, the virtual volume configuring a first remote copy pair with the first logical volume; and a third storage system having a third logical volume accompanied with a third plurality of disk drives in the third storage system, the third logical volume configuring a second remote copy pair with the virtual volume and storing a copied data of data stored in the first logical volume. If the second storage system receives write data sent from the first storage system to the virtual volume, the second storage system transfers the write data to the third logical volume in the third storage system.Type: GrantFiled: September 30, 2009Date of Patent: July 31, 2012Assignee: Hitachi, Ltd.Inventors: Ryusuke Ito, Yusuke Hirakawa, Yoshihiro Asaka, Takashi Kaga, Hiroshi Arakawa, Takahiko Takeda, Takao Sato
-
Publication number: 20120191652Abstract: In a system in which data employed by a computer is stored in a storage system, the storage system transfers this data to another storage system and a copy of the data is maintained in the other storage system. The consistency of the copy is maintained even when data is written, to the storage system by a computer, without having a write time applied. A source storage system, when a write time is applied to a write request, records the write time and applies this write time to the received write data and, when no write time is applied, applies the recorded write time to the received write data and transfers the write data with this write time applied thereto, to a target storage system. The target storage system stores the write data in a logical volume in the target storage system in accordance with the write time.Type: ApplicationFiled: April 3, 2012Publication date: July 26, 2012Applicant: HITACHI, LTD.Inventors: Hiroshi Arakawa, Kenta Ninose, Yoshihiro Asaka, Yusuke Hirakawa
-
Patent number: 8205051Abstract: A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A, and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal.Type: GrantFiled: February 16, 2011Date of Patent: June 19, 2012Assignee: Hitachi, Ltd.Inventors: Yusuke Hirakawa, Kazuhito Suishu, Yoshihiro Asaka
-
Publication number: 20120131272Abstract: A first storage subsystem includes a first storage device and a second storage device(s). A second storage subsystem includes a third storage device and a fourth storage device. A third storage subsystem comprises a fifth storage device and a sixth storage device. The first storage subsystem generates a dataset comprising an update number expressing the update order of the first storage device and write data stored in the first storage device, stores the generated dataset in the one or more second storage devices, and transmits the data set to the second and third storage subsystems. Each of the second and third storage subsystems stores the received dataset in the third storage device or fifth storage device, reads a dataset from the third or fifth storage device according to the update number, and stores the write data within the dataset in the fourth storage device or sixth storage device.Type: ApplicationFiled: January 19, 2012Publication date: May 24, 2012Applicant: Hitachi, Ltd.Inventors: Toru Suzuki, Yusuke Hirakawa, Yoshihiro Asaka, Shuji Kondo
-
Publication number: 20120131298Abstract: Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a target volume. Once data is received from a host, each of the plural storage systems creates write-data management information having sequential numbers and reference information and sends, to one of the primary storage systems, the data, sequential number and reference information. Each of the secondary storage systems records reference information corresponding to the larges sequential number among serial sequential numbers and stores, in a target volume in an order of sequential numbers, data corresponding to reference information having a value smaller than the reference information based on the smallest value reference information among reference information recorded in each of the plural secondary storage systems.Type: ApplicationFiled: January 30, 2012Publication date: May 24, 2012Inventors: Hiroshi ARAKAWA, Takashige IWAMURA, Kenta NINOSE, Yusuke HIRAKAWA