Patents by Inventor Takuya Oda
Takuya Oda 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: 11610062Abstract: A label assignment model generation device extracts a plurality of feature amounts for a word from a document as an extraction source, and generates, based on an appearance frequency of each of the extracted feature amounts, a label assignment model that is a machine learning model and assigns a label to a word included in a document as an assignment target. The label assignment model generation device adjusts a degree of influence of the feature amount on the label assignment model based on a deviation of the appearance frequency of each of the plurality of feature amounts. The label assignment model generation device extracts a plurality of feature amounts for a word from a remaining document excluding a predetermined document from a plurality of documents as extraction sources, and generates the label assignment model based on the appearance frequency of the extracted feature amounts.Type: GrantFiled: October 16, 2020Date of Patent: March 21, 2023Assignee: HITACHI, LTD.Inventors: Takuya Oda, Michiko Tanaka
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Publication number: 20230020147Abstract: A peer-to-peer terminal includes a bid data obtaining unit, a bid data transmitter, a contract result calculator, a contract result transmitter, a contract result receiver, and a contract result selector. The bid data obtaining unit obtains bid data. The bid data transmitter transmits the bid data to another peer-to-peer terminal. The contract result calculator calculates a contract result from a bid data set obtained by the bid data obtaining unit and including the bid data. The contract result transmitter transmits the contract result to the other peer-to-peer terminal. The contract result receiver receives, from the other peer-to-peer terminal, another contract result calculated by the other peer-to-peer terminal. The contract result selector selects one contract result from among the contract result and the other contract result.Type: ApplicationFiled: January 30, 2020Publication date: January 19, 2023Applicants: Mitsubishi Electric Corporation, Tokyo Institute of TechnologyInventors: Yuta OKUMURA, Takuya ODA, Yuya KAJIKAWA, Keisuke TANAKA, Xavier DEFAGO
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Patent number: 11546064Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.Type: GrantFiled: June 18, 2019Date of Patent: January 3, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikazu Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
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Patent number: 11516073Abstract: A failure location estimation apparatus sets partial networks obtained by dividing a network into one or more networks, and verifies connectivity of a path for each of combinations of terminal nodes for each of the partial networks. The failure location estimation apparatus selects some or all combinations of the combinations of terminal nodes determined to have an abnormality in connectivity for each of the partial networks, and verifies connectivity of a path for each of combinations of nodes included in a selected node connection that is the selected combinations of terminal nodes. The failure location estimation apparatus estimates a failure location in the network based on a verification result of connectivity of each of the combinations of nodes.Type: GrantFiled: October 2, 2019Date of Patent: November 29, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuya Oda, Shokei Kobayashi, Akira Hirano
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Publication number: 20220345398Abstract: A transfer device includes a detection unit configured to detect a sign of a failure in a link between transfer devices, and a management unit configured to update a routing table to lower a priority of a path via the link when the sign of the failure is detected by the detection unit.Type: ApplicationFiled: September 30, 2019Publication date: October 27, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kengo SHINTAKU, Shokei KOBAYASHI, Fumikazu INUZUKA, Kei KITAMURA, Takuya ODA, Takafumi TANAKA
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Publication number: 20220321210Abstract: A transmission apparatus includes a control unit for carrying out processing to secure a resource for a standby system path in response to detection of a sign of failure in an active system path.Type: ApplicationFiled: August 5, 2019Publication date: October 6, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kei KITAMURA, Fumikazu INUZUKA, Kengo SHINTAKU, Takuya ODA, Takafumi TANAKA, Masahito TOMIZAWA
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Patent number: 11391603Abstract: A multi-core optical fiber includes a central core disposed at the center of a cladding; and outer cores helically wound around the central core. The following Formula (1) is satisfied: n e ? ? 1 × ( 1 fw - B ) < n e ? ? 2 ? ave × ( 1 fw + A ) < n e ? ? 1 × ( 1 fw + B ) ? ? A = ( 1 fw ) 2 + ( 2 ? ? ? ? d ave ) 2 - 1 fw ? ? B = A 1 + A · fw ( 1 ) where dave is an average of a distance d between the central core and the outer cores, fw is the number of helical turns of the outer cores per unit length, ne1 is an effective refractive index of the central core, and ne2ave is an average of effective refractive indices of the outer cores.Type: GrantFiled: July 17, 2019Date of Patent: July 19, 2022Assignee: FUJIKURA LTD.Inventors: Shingo Matsushita, Takuya Oda
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Publication number: 20220214889Abstract: An adapting device according to an embodiment includes: a first storage unit configured to store correspondence information representing a correspondence relation between processing requested by a higher-level system and a method for implementing the processing in a lower-level system; a conversion unit configured to convert a processing request from the higher-level system to the lower-level system into a processing procedure capable of being implemented in the lower-level system and supply the processing procedure to the lower-level system; and an additional information processing unit configured to generate additional information to be supplied to the lower-level system together with the processing procedure.Type: ApplicationFiled: April 7, 2020Publication date: July 7, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
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Patent number: 11342990Abstract: A state estimating device includes a pre-processing unit and an estimating unit. The pre-processing unit acquires data representing at one or more of a phase of a signal transmitted from a transmission unit of a transmission device and received at a reception unit of another transmission device via a transmission path, a reception strength, a reception quality, a voltage after conversion into an electric signal, and a signal processing parameter used in reception processing, and processes the acquired data into feature data to be used for state estimation. The estimating unit estimates a state of the transmission path, an abnormal state of the transmission unit, or an abnormal state of the reception unit, on the basis of the feature data.Type: GrantFiled: February 13, 2019Date of Patent: May 24, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Seiki Kuwabara, Wataru Kawakami, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Tetsuro Inui, Takuya Oda, Fumikazu Inuzuka, Takafumi Tanaka
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Patent number: 11327748Abstract: A software cooperation possibility determination apparatus stores pieces of software configuration information which are pieces of information regarding configurations of determination target software which is software for which cooperation possibility with cooperation destination software which is software of a cooperation destination is to be determined and verified software which is software verified that the software is able to cooperate with the cooperation destination software, acquires information regarding data output from the determination target software and information regarding data output from the verified software and input to the cooperation destination software from the pieces of software configuration information, and determines consistency or similarity between the information regarding the data output from the determination target software and the information regarding the data output from the verified software, and determines the cooperation possibility of the determination target softwareType: GrantFiled: March 12, 2021Date of Patent: May 10, 2022Assignee: HITACHI, LTD.Inventors: Takaaki Haruna, Takuya Oda
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Patent number: 11255716Abstract: An analysis support apparatus includes: a feature interpreting section extracting a feature from a target analysis model generated from vibration data and classifying the feature into an abnormality determination feature, or a feature representing a vibration and enabling determining whether abnormality occurs; an abnormality determination range creating section identifying a range being determined to be abnormal of the abnormality determination feature of the target analysis model as an abnormality determination range; a similar model selecting section calculating an overlapping degree indicating how much the abnormality determination ranges of the target analysis model and one or more predetermined reference analysis models overlap and selecting, based on the overlapping degree, a similar analysis model similar to the target analysis model from the reference analysis models; and an abnormality range difference calculating section extracting a difference between the abnormality determination ranges of the taType: GrantFiled: September 18, 2019Date of Patent: February 22, 2022Assignee: HITACHI, LTD.Inventors: Takuya Komatsuda, Takuya Oda
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Publication number: 20220045900Abstract: A failure location estimation apparatus sets partial networks obtained by dividing a network into one or more networks, and verifies connectivity of a path for each of combinations of terminal nodes for each of the partial networks. The failure location estimation apparatus selects some or all combinations of the combinations of terminal nodes determined to have an abnormality in connectivity for each of the partial networks, and verifies connectivity of a path for each of combinations of nodes included in a selected node connection that is the selected combinations of terminal nodes. The failure location estimation apparatus estimates a failure location in the network based on a verification result of connectivity of each of the combinations of nodes.Type: ApplicationFiled: October 2, 2019Publication date: February 10, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
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Patent number: 11244109Abstract: An information processing device specifies a plurality of cooccurrence words common to first and second words, and determines synonymity or relevancy about the first word and the second word based on cooccurrence indices between the specified cooccurrence words and each of the first and second words. More specifically, the information processing device selects, from among the specified cooccurrence words, one cooccurrence word in which at least one of cooccurrence indices between the specified cooccurrence word and the first and second words does not exceed a preset first threshold, and obtains a difference in cooccurrence index between each selected cooccurrence word and each of the first and second words, if the difference exceeds a preset second threshold, the information processing device determines the first and second words as relevant word candidates, and if the difference does not exceed the second threshold, the information processing device determines them as synonym candidates.Type: GrantFiled: March 25, 2020Date of Patent: February 8, 2022Assignee: HITACHI, LTD.Inventors: Takuya Oda, Tadashi Takeuchi
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Publication number: 20220004382Abstract: A software cooperation possibility determination apparatus stores pieces of software configuration information which are pieces of information regarding configurations of determination target software which is software for which cooperation possibility with cooperation destination software which is software of a cooperation destination is to be determined and verified software which is software verified that the software is able to cooperate with the cooperation destination software, acquires information regarding data output from the determination target software and information regarding data output from the verified software and input to the cooperation destination software from the pieces of software configuration information, and determines consistency or similarity between the information regarding the data output from the determination target software and the information regarding the data output from the verified software, and determines the cooperation possibility of the determination target softwareType: ApplicationFiled: March 12, 2021Publication date: January 6, 2022Inventors: Takaaki HARUNA, Takuya ODA
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Publication number: 20210385146Abstract: An estimation method includes: generating information regarding success or not success in a connectivity checking test between “N” nodes in a case in which a failure occurs in a verification target path including the nodes, the information being generated as pattern information for each failure location; selecting “M” network devices from among a plurality of network devices in accordance with occurrence of the failure; executing the connectivity checking test between the selected network devices; comparing a checking result of the connectivity checking test with pattern information that satisfies “N=M” in the pattern information; and estimating the failure location in the service path based on the failure location associated with the pattern information in a case in which the pattern information that satisfies “N=M” matches the checking result.Type: ApplicationFiled: October 4, 2019Publication date: December 9, 2021Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
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Patent number: 11165497Abstract: There is provided an optical transmission system in which a plurality of optical transmission and reception apparatuses perform 1-to-N transmission and reception of optical signals (N is an integer equal to or greater than 1), the optical transmission system being configured to select a communication condition that includes at least a modulation scheme or a baud rate and is a communication condition when each of the optical transmission and reception apparatuses performs transmission and reception in accordance with a transmission line condition that is between any one first optical transmission and reception apparatus and each of second optical transmission and reception apparatuses, which are N grounds, other than the first optical transmission and reception apparatus.Type: GrantFiled: March 1, 2019Date of Patent: November 2, 2021Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Fumikazu Inuzuka, Shokei Kobayashi, Akira Hirano, Wataru Kawakami, Tetsuro Inui, Seiki Kuwabara, Kei Kitamura, Takafumi Tanaka, Takuya Oda, Hideki Nishizawa, Seiji Okamoto
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Publication number: 20210328861Abstract: A fault diagnosis unit (42) of a fault diagnosis apparatus (4) performs a fault diagnosis of a communication network (2) with a probabilistic inference algorithm using information on the communication network (2) having been gathered by an NW monitoring unit (41). A diagnosis result determining unit (43) determines test items for confirming and determining a diagnosis result of the fault diagnosis. A test performing unit (44) performs a confirmation test of the determined test items. The diagnosis result determining unit (43) determines a likelihood of the diagnosis result of the fault diagnosis based on a result of the confirmation test.Type: ApplicationFiled: August 26, 2019Publication date: October 21, 2021Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
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Publication number: 20210314067Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.Type: ApplicationFiled: June 18, 2019Publication date: October 7, 2021Inventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikaza Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
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Publication number: 20210303789Abstract: A label assignment model generation device extracts a plurality of feature amounts for a word from a document as an extraction source, and generates, based on an appearance frequency of each of the extracted feature amounts, a label assignment model that is a machine learning model and assigns a label to a word included in a document as an assignment target. The label assignment model generation device adjusts a degree of influence of the feature amount on the label assignment model based on a deviation of the appearance frequency of each of the plurality of feature amounts. The label assignment model generation device extracts a plurality of feature amounts for a word from a remaining document excluding a predetermined document from a plurality of documents as extraction sources, and generates the label assignment model based on the appearance frequency of the extracted feature amounts.Type: ApplicationFiled: October 16, 2020Publication date: September 30, 2021Inventors: Takuya ODA, Michiko TANAKA
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Publication number: 20210270642Abstract: A multi-core optical fiber includes a central core disposed at the center of a cladding; and outer cores helically wound around the central core. The following Formula (1) is satisfied: n e ? ? 1 × ( 1 fw - B ) < n e ? ? 2 ? ave × ( 1 fw + A ) < n e ? ? 1 × ( 1 fw + B ) ? ? A = ( 1 fw ) 2 + ( 2 ? ? ? ? d ave ) 2 - 1 fw ? ? B = A 1 + A · fw ( 1 ) where dave is an average of a distance d between the central core and the outer cores, fw is the number of helical turns of the outer cores per unit length, ne1 is an effective refractive index of the central core, and ne2ave is an average of effective refractive indices of the outer cores.Type: ApplicationFiled: July 17, 2019Publication date: September 2, 2021Applicant: Fujikura Ltd.Inventors: Shingo Matsushita, Takuya Oda