Patents by Inventor Hiroki Fujii
Hiroki Fujii 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: 20240094308Abstract: A detector includes a measurement unit and a battery control unit. The measurement unit measures a measurement value indicating a battery state of a secondary battery. The battery control unit detects a sign of thermal runway in the secondary battery. The measurement unit determines whether a start-up signal is output based on the measurement value in a case where the battery control unit is in a sleep state, and outputs the start-up signal in a case where the start-up signal is output. The battery control unit starts by receiving the start-up signal from the measurement unit when the battery control unit is in the sleep state, executes arithmetic processing on the measurement value received from the measurement unit, and detects the sign of thermal runaway based on a calculated result of the arithmetic processing.Type: ApplicationFiled: September 11, 2023Publication date: March 21, 2024Inventors: Shuhei YOSHIDA, Masaki UCHIYAMA, Hiroki FUJII
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Publication number: 20240070572Abstract: A notification method includes: determining candidate destinations for a vehicle from among a plurality of facilities requesting for electric power, using first information about the vehicle and second information about the plurality of facilities; and transmitting the candidate destinations to a user terminal of the vehicle. The first information includes a power generation type of an electric power stored in a power storage device included in the vehicle. The second information includes a power generation type of the electric power requested by each of the plurality of facilities.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi OKI, Hiroki TAKABATAKE, Shigeki KINOMURA, Hisashi FUJISAWA, Hiromitsu FUJII
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Patent number: 11914868Abstract: A storage system comprises nodes and drives, and includes at least one mounting area to install the drives. A node manages a parity group constituted of the plurality of drives; generates, in a case where a target drive that is installed in a first mounting area and that belongs to a first parity group is to be moved from the first mounting area to a second mounting area, difference information regarding a storage area where data was written into the target drive during a period in which the target drive is moved from the first mounting area to the second mounting area; and restore data written into the storage area by using data stored in other drives than the target drive that belongs to the first parity group based on the difference information, and write the data into the target drive that has been moved to the second mounting area.Type: GrantFiled: September 2, 2022Date of Patent: February 27, 2024Assignee: Hitachi, Ltd.Inventors: Ryo Hanafusa, Tomohiro Yoshihara, Ryosuke Tatsumi, Hiroki Fujii
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Patent number: 11908807Abstract: A semiconductor device is provided. The semiconductor device includes: a substrate with first-conductivity-type impurities; first and second active regions provided on the substrate; a first deep element isolation layer surrounding the first active region; a second deep element isolation layer surrounding the second active region; a suction region surrounding the first and second deep element isolation layers, the suction region including the first-conductivity-type impurities; a well region provided in the substrate between the first and second active regions, the well region including second-conductivity-type impurities different from the first-conductivity-type impurities; a shallow element isolation layer provided between the suction region and the well region; and a guard structure connected to the suction region. The substrate includes a signal path portion that is provided between a top surface of the substrate and the well region, and surrounds an upper portion of the well region.Type: GrantFiled: January 12, 2022Date of Patent: February 20, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Huichul Shin, Hyungjin Lee, Jinhong Park, Mingeun Song, Euiyoung Jeong, Hiroki Fujii
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Patent number: 11880278Abstract: It is made possible to pursue both higher speeds of rebuilds in the distributed RAID scheme and high availability due to acquisition of DE-failure tolerance. A virtual chunk includes k (k is an integer that is equal to or larger than two) virtual parcels including a virtual parcel having user data and a virtual parcel having element data that is redundant data for repairing the user data, the virtual parcels included in the same virtual chunk is stored by mapping the virtual parcels in storage areas of k mutually different physical storage drives among N (k<N) of the physical storage drives, and the maximum value of the numbers of the same virtual parcels to be mapped to the physical storage drives housed in the same drive enclosures is equal to or smaller than a predetermined value.Type: GrantFiled: March 9, 2022Date of Patent: January 23, 2024Assignee: HITACHI, LTD.Inventors: Takeru Chiba, Hiroki Fujii
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Patent number: 11860235Abstract: A battery state estimation apparatus calculates a measured DC resistance value of a DC resistance based on a current change amount and a voltage change amount, which are calculated in a predetermined period using measured current value and voltage value. The battery state estimation apparatus further calculates (i) a non-temperature dependent constant and (ii) a constant of a temperature dependent function based on (i) an estimated DC resistance value and (ii) the measured DC resistance value. The estimated DC resistance value is an estimated value of the measured DC resistance value; the estimated DC resistance value is represented as a sum of (i) the non-temperature dependent constant Ra, which indicates a temperature independent component of the DC resistance of the secondary battery, and (ii) the temperature dependent function Rb, which indicates a temperature dependent component of the DC resistance of the secondary battery.Type: GrantFiled: March 14, 2022Date of Patent: January 2, 2024Assignee: DENSO CORPORATIONInventors: Yuri Sano, Hiroki Fujii, Koji Ohira
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Publication number: 20230393948Abstract: Acquiring a snapshot of a logical volume involves generating snapshot-related catalog information including at least a location for storing actual data in the snapshot and a reference destination for identifying another snapshot in parent-child relation to the snapshot, and storing the actual data in the snapshot to the physical storage device and/or to the cloud service. In a case where at least one of a plurality of snapshots is to be designated and restored, catalog information is referenced to identify the storage location of the actual data and acquire the actual data stored in the physical storage device and the actual data not stored in the physical storage device from the cloud service.Type: ApplicationFiled: March 6, 2023Publication date: December 7, 2023Applicant: Hitachi, Ltd.Inventors: Hiroki FUJII, Masahiro ARAI, Akira DEGUCHI
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Publication number: 20230244387Abstract: A storage system comprises nodes and drives, and includes at least one mounting area to install the drives. A node manages a parity group constituted of the plurality of drives; generates, in a case where a target drive that is installed in a first mounting area and that belongs to a first parity group is to be moved from the first mounting area to a second mounting area, difference information regarding a storage area where data was written into the target drive during a period in which the target drive is moved from the first mounting area to the second mounting area; and restore data written into the storage area by using data stored in other drives than the target drive that belongs to the first parity group based on the difference information, and write the data into the target drive that has been moved to the second mounting area.Type: ApplicationFiled: September 2, 2022Publication date: August 3, 2023Inventors: Ryo HANAFUSA, Tomohiro YOSHIHARA, Ryosuke TATSUMI, Hiroki FUJII
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Patent number: 11699375Abstract: A semiconductor device includes a semiconductor substrate including an active region defined in a well impurity layer having a first conductivity type, a gate electrode on the active region, and a gate insulating layer between the gate electrode and the active region. The active region includes a source region and a drain region at sides of the gate electrode, the source region and the drain region having a second conductivity type, a channel region between the source and drain regions, the channel region having the first conductivity type, a first halo region in contact with the source region and a second halo region in contact with the drain region, the first halo region and the second halo region having the first conductivity type, and a slit well region between the first and second halo regions, the slit well region having the first conductivity type.Type: GrantFiled: October 18, 2022Date of Patent: July 11, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Hiroki Fujii, Jae-Hyun Yoo
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Publication number: 20230214134Abstract: A storage controller manages a logical volume to which a host makes an access and which manages host data, an addition address space which is mapped with the logical volume and to which host data is added, and a physical address space which is mapped with the addition address space. In the addition address space, different address regions are allocated to respective parity groups. The storage controller selects, as an addition area of host data supplied from the host, an unoccupied address region in the addition address space. As the addition area, a region mapped to a normal status parity group in which data recovery is unnecessary is more preferentially selected than a region allocated to an abnormal status parity group in which data recovery is necessary.Type: ApplicationFiled: September 7, 2022Publication date: July 6, 2023Inventors: Takashi NAGAO, Tomohiro YOSHIHARA, Hiroki FUJII
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Patent number: 11599297Abstract: The efficiency of the maintenance of a storage apparatus including a plurality of flash drives can be enhanced. In a storage apparatus including a plurality of SSDs and a CPU, the CPU specifies, based on lifetimes of the SSDs depending on amounts of data written to the SSDs, the SSD to be replaced on a scheduled maintenance date, gives notice of the SSD specified to be replaced, and copies data in the SSD to be replaced to another SSD by the scheduled maintenance date on which the replacement is to be performed.Type: GrantFiled: September 16, 2021Date of Patent: March 7, 2023Assignee: Hitachi, Ltd.Inventors: Hideyuki Koseki, Hiroki Fujii, Akira Deguchi, Akira Yamamoto
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Publication number: 20220399284Abstract: A semiconductor device is provided. The semiconductor device includes: a substrate with first-conductivity-type impurities; first and second active regions provided on the substrate; a first deep element isolation layer surrounding the first active region; a second deep element isolation layer surrounding the second active region; a suction region surrounding the first and second deep element isolation layers, the suction region including the first-conductivity-type impurities; a well region provided in the substrate between the first and second active regions, the well region including second-conductivity-type impurities different from the first-conductivity-type impurities; a shallow element isolation layer provided between the suction region and the well region; and a guard structure connected to the suction region. The substrate includes a signal path portion that is provided between a top surface of the substrate and the well region, and surrounds an upper portion of the well region.Type: ApplicationFiled: January 12, 2022Publication date: December 15, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Huichul SHIN, Hyungjin LEE, Jinhong PARK, Mingeun SONG, Euiyoung JEONG, Hiroki FUJII
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Publication number: 20220365850Abstract: It is made possible to pursue both higher speeds of rebuilds in the distributed RAID scheme and high availability due to acquisition of DE-failure tolerance. A virtual chunk includes k (k is an integer that is equal to or larger than two) virtual parcels including a virtual parcel having user data and a virtual parcel having element data that is redundant data for repairing the user data, the virtual parcels included in the same virtual chunk is stored by mapping the virtual parcels in storage areas of k mutually different physical storage drives among N (k<N) of the physical storage drives, and the maximum value of the numbers of the same virtual parcels to be mapped to the physical storage drives housed in the same drive enclosures is equal to or smaller than a predetermined value.Type: ApplicationFiled: March 9, 2022Publication date: November 17, 2022Applicant: Hitachi, Ltd.Inventors: Takeru CHIBA, Hiroki FUJII
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Patent number: 11467904Abstract: A storage system including a storage controller and a plurality of storage drives generates parity data from data. Data and parity data configure a stripe. A plurality of stripes configure a parity group allocated with a plurality of storage drives to store the parity group. A first parity group allows the number of storage drives allocated to the parity group to be equal to the number of data pieces configuring each stripe. A second parity group allows the number of storage drives allocated to the parity group to be larger than the number of data pieces configuring each stripe and allows data for each stripe to be distributed and stored in different combinations of storage drives. When the first parity group is converted to the second parity group, a storage drive is added so that it is allocated to the parity group. Data is moved to ensure a free area.Type: GrantFiled: March 15, 2021Date of Patent: October 11, 2022Assignee: HITACHI, LTD.Inventors: Takeru Chiba, Hiroki Fujii, Yoshiaki Deguchi
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Publication number: 20220283938Abstract: Element data stored in a selected virtual device is moved to another virtual device, a virtual parcel allocated to a specific physical device is allocated to a plurality of unallocated areas located in different physical devices, which are mapped to the virtual parcel in which the data is unstored by moving the element data, and all the specific physical devices are brought into an unallocated state.Type: ApplicationFiled: September 10, 2021Publication date: September 8, 2022Applicant: Hitachi, Ltd.Inventors: Hiroki FUJII, Yoshinori OHIRA, Takeru CHIBA, Akira DEGUCHI
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Publication number: 20220236882Abstract: The efficiency of the maintenance of a storage apparatus including a plurality of flash drives can be enhanced. In a storage apparatus including a plurality of SSDs and a CPU, the CPU specifies, based on lifetimes of the SSDs depending on amounts of data written to the SSDs, the SSD to be replaced on a scheduled maintenance date, gives notice of the SSD specified to be replaced, and copies data in the SSD to be replaced to another SSD by the scheduled maintenance date on which the replacement is to be performed.Type: ApplicationFiled: September 16, 2021Publication date: July 28, 2022Inventors: Hideyuki KOSEKI, Hiroki FUJII, Akira DEGUCHI, Akira YAMAMOTO
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Patent number: 11379327Abstract: A storage controller of a storage system performs, when failures occur in at least two drives, priority rebuilding and normal rebuilding in parallel, the priority rebuilding being performed so as to perform rebuilding using a reading drive for reading data for restoration of priority rebuild data to be preferentially rebuilt and a writing drive specified for writing the priority rebuild data restored, the normal rebuilding being performed so as to rebuilt normal rebuild data by using a specified reading drive and a specified writing drive.Type: GrantFiled: September 23, 2020Date of Patent: July 5, 2022Assignee: HITACHI, LTD.Inventors: Sho Sawada, Hidenori Suzuki, Eiju Katsuragi, Shintarou Inoue, Hiroki Fujii
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Publication number: 20220196750Abstract: A battery state estimation apparatus calculates a measured DC resistance value of a DC resistance based on a current change amount and a voltage change amount, which are calculated in a predetermined period using measured current value and voltage value. The battery state estimation apparatus further calculates (i) a non-temperature dependent constant and (ii) a constant of a temperature dependent function based on (i) an estimated DC resistance value and (ii) the measured DC resistance value. The estimated DC resistance value is an estimated value of the measured DC resistance value; the estimated DC resistance value is represented as a sum of (i) the non-temperature dependent constant Ra, which indicates a temperature independent component of the DC resistance of the secondary battery, and (ii) the temperature dependent function Rb, which indicates a temperature dependent component of the DC resistance of the secondary battery.Type: ApplicationFiled: March 14, 2022Publication date: June 23, 2022Inventors: Yuri SANO, Hiroki FUJII, Koji OHIRA
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Patent number: 11342769Abstract: A control device comprises an acquisition unit that acquires a current to or from the battery and a voltage of a battery, a calculation unit that calculates an internal resistance of the battery based on the current and the voltage when the regenerative power generation is performed by a rotary electric machine, and a permission determination unit that determines whether to permit an automatic stop of an engine depending on whether restarting of the engine is enabled based on power running drive of the rotary electric machine. The calculation unit calculates a value of the internal resistance each time the regenerative power generation or the power running drive is performed before the engine enters an automatic stop state. The permission determination unit determines whether to permit the automatic stop based on a latest value of the internal resistance among values of the internal resistance calculated by the calculation unit.Type: GrantFiled: July 11, 2019Date of Patent: May 24, 2022Assignee: DENSO CORPORATIONInventors: Tetsuya Watanabe, Yuki Tachibana, Hiroki Fujii
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Publication number: 20220024286Abstract: A reinforcement sheet is stuck onto a metal panel. The reinforcement sheet includes a resin layer and a constraining layer disposed on one side of the resin layer in the thickness direction. The reinforcement sheet extends in a first direction and a second direction. An outer circumferential edge on one side of the reinforcement sheet in the first direction has a curved shape protruding toward the one side in the first direction.Type: ApplicationFiled: December 2, 2019Publication date: January 27, 2022Applicant: NITTO DENKO CORPORATIONInventors: Hiroki FUJII, Naoto KATO, Hideyuki SUZUKI