公开(公告)号：US20230177266A1

公开(公告)日：2023-06-08

申请号：US17924065

申请日：2021-04-26

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Akio SHIMADA ,  Mitsuo HAYASAKA

IPC: G06F40/279 ,  G06V30/412 ,  G06V30/416

CPC classification number: G06F40/279 ,  G06V30/412 ,  G06V30/416

Abstract: Sentences associated with diagrams or tables are extracted in a wider range. In a sentence extracting device that includes a processor and extracts a sentence associated with a diagram or a table from a body of a digital document including the diagram or the table and the body, the diagram or the table includes a label, a caption, and a body. The processor includes extraction units 202 to 205 that extract, from the body, a sentence including a second word associated with a first word included in the body of the diagram or the table.

公开(公告)号：US20230400982A1

公开(公告)日：2023-12-14

申请号：US18176707

申请日：2023-03-01

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Nobuhiro YOKOI ,  Takashi NAGAO ,  Yoshihiro YOSHII

IPC: G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0641 ,  G06F3/0679

Abstract: A storage system includes: a central processing unit; a main memory; first management information that associates a hash value of received data with an address in a volume; and an I/O processing package. The I/O processing package includes an I/O processor and an I/O memory. The I/O processor executes protocol processing. The I/O processor executes at least a part of search processing of an address associated with a hash value of first received data in the first management information. The central processing unit controls execution of deduplication processing of the first received data based on data of an address associated with the hash value of the first received data.

公开(公告)号：US20230328008A1

公开(公告)日：2023-10-12

申请号：US18205856

申请日：2023-06-05

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro YOKOI ,  Hiroka IHARA

IPC: H04L49/9047 ,  H04L49/90

CPC classification number: H04L49/9052 ,  H04L49/9084

Abstract: A network interface includes a processor, memory, and a cache between the processor and the memory. The processor secures a plurality of buffers for storing transfer data in the memory, and manages an allocation order of available buffers of the plurality of buffers. The processor returns a buffer released after data transfer to a position before a predetermined position of the allocation order.

公开(公告)号：US20230305731A1

公开(公告)日：2023-09-28

申请号：US18198731

申请日：2023-05-17

Applicant: Hitachi, Ltd.

Inventor： Akira DEGUCHI ,  Nobuhiro YOKOI ,  Hiroka IHARA

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/061 ,  G06F3/0683

Abstract: A primary storage system reads a plurality of journal data, and performs collective compression that is compression of data that is at least a part of the plurality of pieces of journal data in the plurality of journals and is larger than a size of one journal data. The collectively compressed data, which is a plurality of pieces of journal data subjected to collective compression, is a transfer target from the primary storage system to the secondary storage system. The journal is journal data and metadata including a write order of the journal data and associated with the journal data. The journal data is a copy of data written in the primary volume. The secondary storage system acquires a plurality of pieces of journal data by decompressing one or more pieces of collectively compressed data, and writes the plurality of pieces of journal data to the secondary volume.

公开(公告)号：US20240403167A1

公开(公告)日：2024-12-05

申请号：US18602479

申请日：2024-03-12

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Sadahiro SUGIMOTO ,  Tomohiro YOSHIHARA

IPC: G06F11/10 ,  G06F11/20

Abstract: Storage controllers shift from a normal operation mode to a degraded operation mode in accordance with a command from a management apparatus. Each of the storage controllers in the normal operation mode works in the normal operation state. In transition from the normal operation mode to the degraded operation mode in accordance with a command from the management apparatus, a storage controller designated by the management apparatus changes from the normal operation state into the standing-by state and the other storage controllers except for the designated storage controller change from the normal operation state into the degraded operation state. The storage controller in the standing-by state changes into the degraded operation state in response to stop of a storage controller in the degraded operation state because of occurrence of a failure under the degraded operation mode.

公开(公告)号：US20220276785A1

公开(公告)日：2022-09-01

申请号：US17471575

申请日：2021-09-10

Applicant: Hitachi, Ltd.

Inventor： Akira DEGUCHI ,  Nobuhiro YOKOI ,  Hiroka IHARA

IPC: G06F3/06

Abstract: A primary storage system reads a plurality of journal data, and performs collective compression that is compression of data that is at least a part of the plurality of pieces of journal data in the plurality of journals and is larger than a size of one journal data. The collectively compressed data, which is a plurality of pieces of journal data subjected to collective compression, is a transfer target from the primary storage system to the secondary storage system. The journal is journal data and metadata including a write order of the journal data and associated with the journal data. The journal data is a copy of data written in the primary volume. The secondary storage system acquires a plurality of pieces of journal data by decompressing one or more pieces of collectively compressed data, and writes the plurality of pieces of journal data to the secondary volume.

公开(公告)号：US20220255665A1

公开(公告)日：2022-08-11

申请号：US17472857

申请日：2021-09-13

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro YOKOI ,  Hiroka IHARA ,  Akira DEGUCHI

IPC: H04L1/08

Abstract: A network interface for a storage controller includes a processor and a memory that stores an instruction code to be executed by the processor. The processor executes protocol processing for transmitting and receiving packets via a network. The processor reproduces a first packet not received from the network, from a plurality of other received packets included in an error correction packet group same as that of the first packet.

公开(公告)号：US20220179559A1

公开(公告)日：2022-06-09

申请号：US17470094

申请日：2021-09-09

Applicant: Hitachi, Ltd.

Inventor： Hiroka IHARA ,  Nobuhiro YOKOI ,  Akira DEGUCHI

IPC: G06F3/06

Abstract: An information processing system includes a first storage system for supplying a primary site, and a second storage system for supplying a secondary site. The first storage system is allowed to execute replication by transferring a processing history of a data volume of the first storage system to the second storage system, and to transfer multiple processing histories collectively. The first storage system integrates histories of multiple write accesses included in the multiple processing histories to be collectively transferred, which are duplicatedly addressed on the volume for transfer.