Patents by Inventor Shintaro Ito
Shintaro Ito 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).
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Publication number: 20240134575Abstract: The storage system is a storage system comprising a plurality of storage nodes each including a non-volatile storage device, a storage controller that processes data read/write to the storage device, and a volatile memory, in which the storage controller stores data related to the data write in the memory, stores data that needs to be non-volatile among the data stored in the memory as log data in the storage device, makes the log data stored in the storage device redundant among a plurality of storage nodes, and performs a recovery process for the log data when a problem occurs in the log data stored in the storage device of one of the storage nodes.Type: ApplicationFiled: March 10, 2023Publication date: April 25, 2024Inventors: Sachie TAJIMA, Yoshinori OHIRA, Shintaro ITO, Takahiro YAMAMOTO, Hiroto EBARA
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Publication number: 20240117763Abstract: A gas turbine system includes: a combustor; an intake flow passage connected to the combustor; an exhaust flow passage connected to the combustor; a compressor provided in the intake flow passage; a turbine provided in the exhaust flow passage; an ammonia tank; and a hydrogen generator-separator having an ammonia supply port connected to the ammonia tank and a hydrogen discharge port connected to the combustor, the hydrogen generator-separator being arranged on a downstream side of the turbine in the exhaust flow passage or on a downstream side of the compressor in the intake flow passage, the hydrogen generator-separator including an ammonia cracking catalyst and a hydrogen separation membrane.Type: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicant: IHI CorporationInventors: Shintaro ITO, Toshiro FUJIMORI, Wonyoung CHOI, Masahiro UCHIDA
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Publication number: 20240035415Abstract: A combustion device includes: a liner including an opening at an end, the liner inside of which is formed with a combustion chamber; an air flow path communicating with the opening of the liner; an ammonia supply pipe inserted through the opening of the liner; and a starting fuel supply pipe disposed between the ammonia supply pipe and the air flow path.Type: ApplicationFiled: September 7, 2023Publication date: February 1, 2024Applicant: IHI CorporationInventors: Shintaro ITO, Masahiro UCHIDA
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Publication number: 20240026814Abstract: A combustion device includes: an ammonia tank; a combustor connected to the ammonia tank; an air supply source; and an ammonia autothermal cracking device having inlets connected to the ammonia tank and the air supply source and an outlet connected to the combustor.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Applicant: IHI CorporationInventors: Shintaro ITO, Masahiro UCHIDA
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Publication number: 20240019124Abstract: Provided is a gas turbine system, including: an ammonia tank; a combustor connected to the ammonia tank; an exhaust flow passage connected to the combustor; a turbine provided in the exhaust flow passage; a cracked-gas reservoir connected to the combustor; and an ammonia cracking catalyst, which is arranged on a downstream side of the turbine in the exhaust flow passage, and is connected to the ammonia tank and the cracked-gas reservoir.Type: ApplicationFiled: September 27, 2023Publication date: January 18, 2024Applicant: IHI CorporationInventors: Shintaro ITO, Masahiro UCHIDA
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Publication number: 20240011435Abstract: Provided is a gas turbine system, including: an ammonia tank; a combustor including a combustion chamber, which is connected to the ammonia tank; an intake flow passage connected to the combustor; a compressor provided in the intake flow passage; a cracked-gas reservoir connected to the combustor; and an ammonia cracking catalyst arranged in a bleed flow passage connected to the compressor, between the compressor and the combustor in the intake flow passage, or in a space in the combustor, which brings the combustion chamber and the intake flow passage into communication with each other, the ammonia cracking catalyst being connected to the ammonia tank and the cracked-gas reservoir.Type: ApplicationFiled: September 26, 2023Publication date: January 11, 2024Applicant: IHI CorporationInventors: Shintaro ITO, Masahiro UCHIDA
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Publication number: 20230417414Abstract: A combustion device includes: a combustion chamber; a plurality of hydrogen injection holes facing inside of the combustion chamber; a first air injection hole facing the inside of the combustion chamber and extending in the circumferential direction on a radially outer side with respect to the plurality of hydrogen injection holes; a second air injection hole facing the inside of the combustion chamber and extending in the circumferential direction on a radially inner side with respect to the plurality of hydrogen injection holes, the first and second air injection holes being annular; first swirling blades provided in the first air injection hole and inclined in the circumferential direction with respect to a combustion-chamber-side axial direction; and second swirling blades provided in the second air injection hole and inclined to the same side as the first swirling blades in the circumferential direction with respect to the combustion-chamber-side axial direction.Type: ApplicationFiled: September 7, 2023Publication date: December 28, 2023Applicant: IHI CorporationInventors: Shintaro ITO, Masahiro UCHIDA
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Publication number: 20230401010Abstract: Disclosed is a storage system that achieves performance improvement, quality enhancement, and function addition requiring a drive data layout change while maintaining I/O functionality. The storage system creates a redundancy group for forming a redundant configuration of data to be stored in a storage drive, and stores data of the redundancy group in a plurality of the storage drives. A processor in a storage node discards data stored in a unit storage area, recovers the discarded data according to a changed data format, and re-stores the recovered data in the storage drive. The processor in the storage node performs an I/O process on the data to be discarded during a data format change, by achieving recovery based on the data of the redundancy group that is stored in an area other than the unit storage area where the data format is to be changed.Type: ApplicationFiled: March 8, 2023Publication date: December 14, 2023Applicant: Hitachi, Ltd.Inventors: Sachie TAJIMA, Hideo SAITO, Takaki NAKAMURA, Shintaro ITO, Naruki KURATA, Takahiro YAMAMOTO
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Patent number: 11836378Abstract: To set an appropriate buffer area in a storage system that performs hierarchical storage management. The storage system includes a storage device that provides a storage pool and a storage management unit that manages the storage pool in a tiered manner. The storage pool is provided with a first tier, a second tier, a third tier, and a third tier buffer which is a buffer area used as a buffer when reading or writing data from or to the third tier which is a buffer target tier. The storage management unit determines a size of the third tier buffer based on an access frequency of the third tier.Type: GrantFiled: March 11, 2022Date of Patent: December 5, 2023Assignee: HITACHI, LTD.Inventors: Takaki Nakamura, Takahiro Yamamoto, Shintaro Ito, Masakuni Agetsuma
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Patent number: 11816331Abstract: The invention is to efficiently exchange storage programs. A storage program in an active state and a storage program in a standby state in a storage program group each change metadata thereof when the storage program in the active state writes data. When update of the storage programs including arranging post-update storage programs in storage nodes and generating new-version metadata based on old-version metadata by the post-update storage programs is to be performed, the post-update storage program in the standby state generates the new-version metadata based on the old-version metadata is performed for the storage programs in the plurality of storage nodes while replacing the active state and the standby state of the storage programs with each other in the plurality of storage programs in the storage program group.Type: GrantFiled: March 11, 2022Date of Patent: November 14, 2023Assignee: Hitachi, Ltd.Inventors: Sachie Tajima, Shintaro Ito, Takahiro Yamamoto, Yoshinori Ohira
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Patent number: 11789613Abstract: In a storage system in which a plurality of pieces of control software constituting a redundancy group are distributedly arranged in a plurality of storage nodes, control software in an active state out of the plurality of pieces of control software constituting the redundancy group receives a write request from a higher-level device. The control software in the active state writes data related to the write request by mirroring into a cache memory of a storage node in which the control software in the active state is arranged and a cache memory of a storage node in which control software in an inactive state belonging to the same redundancy group is arranged. The control software in the active state sends a write completion response to the higher-level device, and redundantly stores the data written in the cache memories in a storage device.Type: GrantFiled: March 9, 2022Date of Patent: October 17, 2023Assignee: HITACHI, LTD.Inventors: Shintaro Ito, Sachie Tajima, Takahiro Yamamoto, Masakuni Agetsuma
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Publication number: 20230315301Abstract: A storage system having high performance and high reliability includes a non-volatile storage device, a storage controller configured to control data to be read and written from and to the storage device using a storage function; and a volatile memory. In the reading and writing, the storage controller generates a log and stores the log in a log memory, writes the log stored in the memory to the storage device, and collects a capacity of the storage area of the memory storing the log written to the storage device. In collecting a free area of the memory, the storage controller executes a base image saving method of writing in the storage device in units of storage areas having a plurality of logs and collecting a free area, and a garbage collection method of writing in the storage device in units of logs and collecting a free area.Type: ApplicationFiled: March 1, 2023Publication date: October 5, 2023Inventors: Shintaro ITO, Yoshinori OHIRA, Hiroto EBARA
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Patent number: 11726691Abstract: When a communication protocol is changed, the I/O function can be appropriately provided. In a computer system, a storage node includes a CPU and a storage control program that performs communication relating to data I/O. The storage control program has a first storage control program that is capable of using a first communication protocol, and a second storage control program that is capable of using the first communication protocol and a second communication protocol. The control node the control node causes, when any storage node of the plurality of storage nodes is capable of executing the first storage control program alone, all storage nodes to perform communication using the first communication protocol. The control node causes, after all storage nodes of the plurality of storage nodes are enabled to execute the second storage control program, the all storage nodes to perform communication using the second communication protocol.Type: GrantFiled: September 8, 2021Date of Patent: August 15, 2023Assignee: Hitachi, Ltd.Inventors: Sachie Tajima, Takahiro Yamamoto, Shintaro Ito, Masakuni Agetsuma
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Publication number: 20230236932Abstract: In each node constituting a storage system, there is at least one of a storage area (user area) in which a user data set is stored and a storage area (parity area). For the node having the user area, there is user part difference information including information indicating whether or not to be in presence of difference for each user area of the node. For the node having the parity area, there is parity part difference information including the information indicating whether or not to be in the presence of difference for each parity area of the node. Out of the parity part difference information, the information corresponding to the parity area is the information indicating the presence of difference when there is the information indicating the presence of difference in the storage area of any of the data sets used for generating the parity stored in the parity area.Type: ApplicationFiled: September 8, 2022Publication date: July 27, 2023Inventors: Takahiro YAMAMOTO, Hideo SAITO, Shintaro ITO, Sachie TAJIMA, Hiroto EBARA, Taisuke ONO
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Publication number: 20230176732Abstract: The invention is to efficiently exchange storage programs. A storage program in an active state and a storage program in a standby state in a storage program group each change metadata thereof when the storage program in the active state writes data. When update of the storage programs including arranging post-update storage programs in storage nodes and generating new-version metadata based on old - version metadata by the post-update storage programs is to be performed, the post-update storage program in the standby state generates the new-version metadata based on the old-version metadata is performed for the storage programs in the plurality of storage nodes while replacing the active state and the standby state of the storage programs with each other in the plurality of storage programs in the storage program group.Type: ApplicationFiled: March 11, 2022Publication date: June 8, 2023Inventors: Sachie TAJIMA, Shintaro ITO, Takahiro YAMAMOTO, Yoshinori OHIRA
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Patent number: 11636015Abstract: A storage system includes a plurality of storage nodes. The storage node includes: one or more storage devices which respectively provide a storage area; and one or more control software which read/write requested data from/into the corresponding storage device according to a request from a higher-level device, wherein each of the control software retains predetermined configuration information required for reading/writing requested data from/into the corresponding storage device according to a request from the higher-level device, wherein a plurality of the control software are managed as a redundancy group, and the configuration information retained in each of the control software belonging to the same redundancy group is synchronously updated, and wherein the plurality of control software configuring the redundancy group are each deployed in respectively different storage nodes so as to distribute a load of each of the storage nodes.Type: GrantFiled: October 8, 2021Date of Patent: April 25, 2023Assignee: Hitachi, Ltd.Inventors: Masakuni Agetsuma, Yuko Matsui, Shintaro Ito, Hideo Saito
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Patent number: 11615005Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.Type: GrantFiled: September 17, 2021Date of Patent: March 28, 2023Assignee: HITACHI, LTD.Inventors: Shintaro Ito, Takahiro Yamamoto, Sachie Tajima, Masakuni Agetsuma
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Patent number: 11609698Abstract: A storage system having high performance and high reliability includes a non-volatile storage device, a storage controller configured to control data to be read and written from and to the storage device using a storage function; and a volatile memory. In the reading and writing, the storage controller generates a log and stores the log in a log memory, writes the log stored in the memory to the storage device, and collects a capacity of the storage area of the memory storing the log written to the storage device. In collecting a free area of the memory, the storage controller executes a base image saving method of writing in the storage device in units of storage areas having a plurality of logs and collecting a free area, and a garbage collection method of writing in the storage device in units of logs and collecting a free area.Type: GrantFiled: September 7, 2022Date of Patent: March 21, 2023Assignee: HITACHI, LTD.Inventors: Shintaro Ito, Yoshinori Ohira, Hiroto Ebara
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Publication number: 20230077961Abstract: To set an appropriate buffer area in a storage system that performs hierarchical storage management. The storage system includes a storage device that provides a storage pool and a storage management unit that manages the storage pool in a tiered manner. The storage pool is provided with a first tier, a second tier, a third tier, and a third tier buffer which is a buffer area used as a buffer when reading or writing data from or to the third tier which is a buffer target tier. The storage management unit determines a size of the third tier buffer based on an access frequency of the third tier.Type: ApplicationFiled: March 11, 2022Publication date: March 16, 2023Applicant: Hitachi, Ltd.Inventors: Takaki NAKAMURA, Takahiro YAMAMOTO, Shintaro ITO, Masakuni AGETSUMA
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Patent number: 11593182Abstract: A storage system including a processor performs a process for providing a volume including a plurality of areas to one or more hosts. One or more storage devices are connected to the processor and store data of the volume, in which each of a plurality of nodes monitors a load of the volume provided by an own node and loads of areas obtained by dividing an area of the volume into a plurality of the areas, and a first node determining that the load of the one volume being monitored is equal to or more than a threshold value migrates a portion of the area included in the one volume to a volume of a second node different from the first node according to the load of the areas obtained by dividing the area of the one volume into the plurality of areas and a policy of load sharing.Type: GrantFiled: September 10, 2021Date of Patent: February 28, 2023Assignee: HITACHI, LTD.Inventors: Takahiro Yamamoto, Yuki Sakashita, Shintaro Ito, Masakuni Agetsuma