Patents by Inventor Taichi Isogai
Taichi Isogai 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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Patent number: 11942623Abstract: Provided are a negative electrode that is for use in a non-aqueous electrolyte secondary battery, includes a porous metal body as a current collector, contains a skeleton-forming agent highly infiltrated in the current collector so that it is less likely to suffer from structural degradation and provides improved cycle durability; and a non-aqueous electrolyte secondary battery including such a negative electrode. The negative electrode for use in a non-aqueous electrolyte secondary battery includes a current collector including a porous metal body; a first negative electrode material disposed in pores of the porous metal body and including a conductive aid, a binder, and a negative electrode active material including a silicon-based material; and a second negative electrode material disposed in pores of the porous metal body and including a skeleton-forming agent including a silicate having a siloxane bond.Type: GrantFiled: January 27, 2022Date of Patent: March 26, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Kiyoshi Tanaami, Toshimitsu Tanaka, Yuji Isogai, Makiko Takahashi, Shintaro Aoyagi, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
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Patent number: 10297877Abstract: According to one embodiment, a storage battery control device includes a first reception unit, a second reception unit, a calculation unit, a generation unit, and a transmission unit. The first reception unit receives a charge and discharge command from a power management device. The second reception unit receives a current electricity storage state from each of storage batteries. The calculation unit calculates a control amount, which indicates a ratio of the current electricity storage state in an operation range, with respect to each of the storage batteries on the basis of the current electricity storage state and the operation range of the electricity storage state.Type: GrantFiled: March 16, 2015Date of Patent: May 21, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Yuki Kagawa, Taichi Isogai, Ryo Yano, Yoshimasa Tada, Nobuaki Sano
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Patent number: 10291034Abstract: A method and device for operating a power system, and a rechargeable-battery management device that extracts maximum performance from rechargeable batteries and uses the batteries evenly while taking into consideration cost and the operation of the batteries are provided. According to the method for operating a power system provided with a plurality of rechargeable-battery devices and a plurality of electric generators, the amount of power that a rechargeable battery available during a scheduled time period on a scheduled date will be able to supply is determined, an economic-dispatch calculation including the determined amount of power that the aforementioned rechargeable battery will be able to supply is performed for the power system, and the rechargeable battery is used to supply power during the scheduled time period on the scheduled date.Type: GrantFiled: February 13, 2013Date of Patent: May 14, 2019Assignees: Hitachi, Ltd., Kabushiki Kaisha ToshibaInventors: Yasutaka Kimura, Mitsuo Tsurugai, Toshiyuki Fujikawa, Hyogo Takami, Tomoyuki Nakamura, Taichi Isogai
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Publication number: 20180198176Abstract: Provided is a stable storage battery management system which manages storage battery systems employing the same structure, re-calculates a rating of the storage battery management system when detecting a status change in storage battery system that affects the rating of the storage battery management system, and notifies a higher rank system of the re-calculation result. A storage battery management system includes a plurality of storage battery systems employing the same structure. The storage battery management system controls charging and discharging of the storage battery system in accordance with a charging and discharging command value from a higher rank system.Type: ApplicationFiled: June 29, 2016Publication date: July 12, 2018Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Taichi ISOGAI, Eri ISONO
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Publication number: 20170373355Abstract: According to one embodiment, a storage battery control device includes a first reception unit, a second reception unit, a calculation unit, a generation unit, and a transmission unit. The first reception unit receives a charge and discharge command from a power management device. The second reception unit receives a current electricity storage state from each of storage batteries. The calculation unit calculates a control amount, which indicates a ratio of the current electricity storage state in an operation range, with respect to each of the storage batteries on the basis of the current electricity storage state and the operation range of the electricity storage state.Type: ApplicationFiled: March 16, 2015Publication date: December 28, 2017Inventors: Yuki Kagawa, Taichi Isogai, Ryo Yano, Yoshimasa Tada, Nobuaki Sano
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Publication number: 20160077164Abstract: A diagnosis data calculation unit 6 calls a representative value of each diagnosis section from the measurement data storage unit 5 corresponding to the diagnosis section, calculates the value as learning data d1 for creating a subspace, and simultaneously calculates it as diagnosis data d2. Normal subspace calculation unit 7 specifies a diagnosis section c on the basis of a calculation result from a normal operation period calculation unit 8 and a high-load time slot calculation unit 18 and calculates a normal subspace that is considered to be normal from a set of the learning data d1. A failure sign detection unit 13 detects presence of a failure sign of the electrical power grid by comparing the diagnosis data d2 with the normal subspace.Type: ApplicationFiled: August 3, 2015Publication date: March 17, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ichiro TOYOSHIMA, Kazunori IWABUCHI, Taichi ISOGAI
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Publication number: 20160020613Abstract: The purpose of the present invention is to provide a method and device for operating a power system, and a rechargeable-battery management device, that extract maximum performance from rechargeable batteries and use said batteries evenly while taking into consideration cost and the operation of the batteries. In order to solve said problem, in this method for operating a power system provided with a plurality of rechargeable-battery devices and a plurality of electric generators, the amount of power that a rechargeable battery available during a scheduled time period on a scheduled date will be able to supply is determined, an economic-dispatch calculation including the determined amount of power that the aforementioned rechargeable battery will be able to supply is performed for the power system, and said rechargeable battery is used to supply power during the scheduled time period on the scheduled date.Type: ApplicationFiled: February 13, 2013Publication date: January 21, 2016Inventors: Yasutaka KIMURA, Mitsuo TSURUGAI, Toshiyuki FUJIKAWA, Hyogo TAKAMI, Tomoyuki NAKAMURA, Taichi ISOGAI
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Patent number: 9134708Abstract: An example information processing device includes first and second receiving units, a deciding unit, and first and second transmitting units. The first receiving unit receives adjustment limit information from a plurality of first external devices. The deciding unit determines adjustment rules on the basis of the adjustment limit information. The first transmitting unit transmits the adjustment rules to second and third external devices. The second receiving unit receives determination information from a fourth external device. The second transmitting unit transmits the adjustment rules to the first external devices when integrated schedule information satisfies a condition. When the integrated schedule information does not satisfy the condition, the deciding unit changes the adjustment rules. When the deciding unit has changed the adjustment rules, the first transmitting unit transmits new adjustment rules to the second and third external devices.Type: GrantFiled: December 27, 2012Date of Patent: September 15, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Kenichiro Furuta, Yuichi Komano, Shinji Yamanaka, Satoshi Ito, Hideyuki Aisu, Tomoshi Otsuki, Masatake Sakuma, Taichi Isogai
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Patent number: 8934631Abstract: According to one embodiment, a decompressing apparatus includes an input unit, a calculating unit, a first selecting unit, and a decompressing unit. The input unit inputs additional data, which is obtained based on trace expression data in which an element in a subgroup of a multiplicative group of a finite field is trace-expressed and affine expression data in which the trace expression data is affine-expressed, and the trace expression data. The calculating unit calculates a plurality of solutions of simultaneous equations derived by the trace expression data. The first selecting unit selects any of a plurality of items of affine expression data in which the element is affine-expressed based on the additional data, the affine expression data being found from the solutions. The decompressing unit decompresses the selected affine expression data to the element.Type: GrantFiled: September 6, 2011Date of Patent: January 13, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Yoshikazu Hanatani, Taichi Isogai, Hirofumi Muratani, Tomoko Yonemura
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Patent number: 8924448Abstract: An arithmetic device includes an input unit inputting data that are elements of a group; a converting unit is configured, when the input data are in a second representation, to convert the input data into a first representation and to perform arithmetic operation on the converted first representation using an operand in the first representation in which at least one subcomponent is a zero element to convert the converted first representation into first converted data expressed in the first representation, and when the input data are in the first representation, to perform arithmetic operation on the input data using the operand in the first representation in which at least one subcomponent is a zero element to convert the input data into second converted data expressed in the first representation; and an operating unit that performs arithmetic processing on the first or the second converted data using secret information.Type: GrantFiled: March 16, 2012Date of Patent: December 30, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Taichi Isogai, Kenichiro Furuta, Hirofumi Muratani, Kenji Ohkuma, Tomoko Yonemura, Yoshikazu Hanatani, Atsushi Shimbo, Hanae Ikeda, Yuichi Komano
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Publication number: 20140330442Abstract: A power supply curve matching one of the patterns of a demand curve stored in advance is created by combining power generation quantities of various power sources. An environmental load index to a supply quantity indicated by the supply curve is calculated based on environmental load information stored in advance. Next, reducible quantity information for each power consumption reduction characteristic of each consumer is stored in advance, a necessary reduction quantity to cause the supply curve to match a predetermined curve is calculated. A reducible supply quantity is calculated based on reducible quantity information, and a reducible index obtained by dividing the reducible supply quantity by the necessary reduction quantity is calculated. Next, the supply curve is adjusted until it is determined that both environmental load index and the reducible index are within respective certain ranges.Type: ApplicationFiled: November 8, 2012Publication date: November 6, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Reiko Obara, Hideki Noda, Takenori Kobayashi, Taichi Isogai, Takahiro Yamada
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Patent number: 8782114Abstract: According to one embodiment, a representation converting unit converts a set of n elements (h0, h1, . . . , hn?1) (hi: a member of a finite field Fp^m, 0?i?n?1) that is a projective representation of a member g of an n-th degree algebraic torus Tn(Fp^m) (n: positive integer, p: prime number, m: positive integer) into a limited projected representation expressed by a set of n elements (h?0, h?1, . . . , h?n?1) (h?i: a member of the finite field Fp^m, 0?i?n?1) in which at least one element out of the n elements is a zero element 0 or an identity element 1. An arithmetic unit omits part of Fp^m operation that is arithmetic operation in the finite field Fp^m based on a fact that an element in the set of n elements (h?0, h?1, . . . , h?n?1) represented by the limited projective representation is a zero element “0” or an identity element “1” when performing Fp^mn operation that is arithmetic operation of a finite field Fp^mn in combination with the Fp^m operation.Type: GrantFiled: January 23, 2012Date of Patent: July 15, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Yonemura, Taichi Isogai, Hirofumi Muratani, Atsushi Shimbo, Yoshikazu Hanatani, Kenichiro Furuta, Kenji Ohkuma, Yuichi Komano, Hanae Ikeda
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Patent number: 8675874Abstract: A compressing unit compresses an element on an algebraic torus into affine representation according to a compression map. A determining unit determines whether a target element on the algebraic torus to be compressed is an exceptional point representing an element on the algebraic torus that cannot be compressed by the compression map. The compressing unit generates, when it is determined that the target element is the exceptional point, a processing result including exceptional information indicating that the target element is the exceptional point, and generates, when it is determined that the target element is not the exceptional point, a processing result including affine representation obtained by compressing the target element according to the compression map.Type: GrantFiled: March 18, 2009Date of Patent: March 18, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Hirofumi Muratani, Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano, Kenichiro Furuta, Yoshikazu Hanatani
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Patent number: 8543630Abstract: In a computing device that calculates a square of an element in a finite field, a vector representation of the element in the finite field is accepted. The vector representation includes a plurality of elements. The computing device performs a multiplication operation on a base field using the accepted elements, and obtains a multiplication value. The multiplication operation is determined by a condition under which the element in the finite field is placed in an algebraic torus. The computing device performs an addition and subtraction operation using the obtained multiplication value and the accepted elements, and obtains a calculation result of the square of the element. The addition and subtraction operation is determined by the condition. The computing device then outputs the calculation result.Type: GrantFiled: April 1, 2013Date of Patent: September 24, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Yonemura, Hirofumi Muratani, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano, Kenichiro Furuta, Yoshikazu Hanatani
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Publication number: 20130243191Abstract: According to an embodiment, an encryption key generating apparatus includes first to third calculators. The first calculator executes a first round operation to a first portion of first data. The second calculator executes the first round to a second portion of second data pieces. Each second data piece includes the first portion of the first data to which the first round operation has been completed and the second portion obtained by changing at least a part of the first data other than the first portion. At least a part of the second portion is different from that of each of the other second portions. The second calculator executes the first round operation to each second portion. The third calculator unit executes operations of the second and subsequent rounds to the second data pieces.Type: ApplicationFiled: March 7, 2013Publication date: September 19, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuichi Komano, Hideo Shimizu, Mitsuru Kanda, Yasuyuki Tanaka, Taichi Isogai
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Patent number: 8533243Abstract: When converting an affine representation representing a 2r-th degree algebraic torus T2r(Fq) (r is a prime number, and q is an integer) to a projective representation representing a quadratic algebraic torus T2(Fq^r), a representation converting apparatus acquires member (c0, c1, . . . , cr-2), (ci is a member of a finite field Fq, where 0?i?r?2) of a 2r-th degree algebraic torus T2r(Fq) represented by the affine representation. The apparatus performs a multiplication operation on the acquired member. The multiplication operation is determined by a condition under which a member of a quadratic algebraic torus T2(Fq^r) is included in the 2r-th degree algebraic torus T2r(Fq), a modulus and a base of a quadratic extension, and a modulus and a base of an r-th degree extension. The representation converting apparatus then performs an addition and subtraction operation determined by the condition, the moduli, and the bases.Type: GrantFiled: March 4, 2009Date of Patent: September 10, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Yonemura, Hirofumi Muratani, Kenji Ohkuma, Hanae Ikeda, Taichi Isogai, Kenichiro Furuta, Yoshikazu Hanatani
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Publication number: 20130166080Abstract: An example information processing device includes first and second receiving units, a deciding unit, and first and second transmitting units. The first receiving unit receives adjustment limit information from a plurality of first external devices. The deciding unit determines adjustment rules on the basis of the adjustment limit information. The first transmitting unit transmits the adjustment rules to second and third external devices. The second receiving unit receives determination information from a fourth external device. The second transmitting unit transmits the adjustment rules to the first external devices when integrated schedule information satisfies a condition. When the integrated schedule information does not satisfy the condition, the deciding unit changes the adjustment rules. When the deciding unit has changed the adjustment rules, the first transmitting unit transmits new adjustment rules to the second and third external devices.Type: ApplicationFiled: December 27, 2012Publication date: June 27, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kenichiro Furuta, Yuichi Komano, Shinji Yamanaka, Satoshi Ito, Hideyuki Aisu, Tomoshi Otsuki, Masatake Sakuma, Taichi Isogai
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Patent number: 8438205Abstract: In a computing device that calculates a square of an element in a finite field, a vector representation of the element in the finite field is accepted. The vector representation includes a plurality of elements. The computing device performs a multiplication operation on a base field using the accepted elements, and obtains a multiplication value. The multiplication operation is determined by a condition under which the element in the finite field is placed in an algebraic torus. The computing device performs an addition and subtraction operation using the obtained multiplication value and the accepted elements, and obtains a calculation result of the square of the element. The addition and subtraction operation is determined by the condition. The computing device then outputs the calculation result.Type: GrantFiled: February 26, 2009Date of Patent: May 7, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Tomoko Yonemura, Hirofumi Muratani, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano, Kenichiro Furuta, Yoshikazu Hanatani
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Publication number: 20120239721Abstract: An arithmetic device includes an input unit inputting data that are elements of a group; a converting unit is configured, when the input data are in a second representation, to convert the input data into a first representation and to perform arithmetic operation on the converted first representation using an operand in the first representation in which at least one subcomponent is a zero element to convert the converted first representation into first converted data expressed in the first representation, and when the input data are in the first representation, to perform arithmetic operation on the input data using the operand in the first representation in which at least one subcomponent is a zero element to convert the input data into second converted data expressed in the first representation; and an operating unit that performs arithmetic processing on the first or the second converted data using secret information.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taichi ISOGAI, Kenichiro Furuta, Hirofumi Muratani, Kenji Ohkuma, Tomoko Yonemura, Yoshikazu Hanatani, Atsushi Shimbo, Hanae Ikeda, Yuichi Komano
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Patent number: 8233616Abstract: An encryption processing unit executes an arithmetic operation decided in advance and outputs an arithmetic result as an element on an algebraic torus. A compressing unit outputs, when the arithmetic result is an exceptional point representing an element on the algebraic torus that cannot be compressed by a compression map for compressing an element on the algebraic torus into affine representation, a compression result obtained by compressing the arithmetic result according to the compression map and outputs, when the arithmetic result is the exceptional point, an element belonging to a specific set decided in advance that does not overlap a set to which a compression result obtained by compressing the arithmetic result, which is not the exceptional point, belongs.Type: GrantFiled: March 18, 2009Date of Patent: July 31, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Hirofumi Muratani, Tomoko Yonemura, Atsushi Shimbo, Kenji Ohkuma, Taichi Isogai, Yuichi Komano, Kenichiro Furuta, Yoshikazu Hanatani, Hanae Ikeda