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).

  • Publication number: 20220004382
    Abstract: 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 software
    Type: Application
    Filed: March 12, 2021
    Publication date: January 6, 2022
    Inventors: Takaaki HARUNA, Takuya ODA
  • Publication number: 20210385146
    Abstract: 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: Application
    Filed: October 4, 2019
    Publication date: December 9, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
  • Patent number: 11165497
    Abstract: 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: Grant
    Filed: March 1, 2019
    Date of Patent: November 2, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu Inuzuka, Shokei Kobayashi, Akira Hirano, Wataru Kawakami, Tetsuro Inui, Seiki Kuwabara, Kei Kitamura, Takafumi Tanaka, Takuya Oda, Hideki Nishizawa, Seiji Okamoto
  • Publication number: 20210328861
    Abstract: 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: Application
    Filed: August 26, 2019
    Publication date: October 21, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Shokei KOBAYASHI, Akira HIRANO
  • Publication number: 20210314067
    Abstract: 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: Application
    Filed: June 18, 2019
    Publication date: October 7, 2021
    Inventors: Tetsuro Inui, Hideki Nishizawa, Seiji Okamoto, Akira Hirano, Shokei Kobayashi, Fumikaza Inuzuka, Seiki Kuwabara, Takafumi Tanaka, Kei Kitamura, Takuya Oda
  • Publication number: 20210303789
    Abstract: 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: Application
    Filed: October 16, 2020
    Publication date: September 30, 2021
    Inventors: Takuya ODA, Michiko TANAKA
  • Publication number: 20210270642
    Abstract: 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: Application
    Filed: July 17, 2019
    Publication date: September 2, 2021
    Applicant: Fujikura Ltd.
    Inventors: Shingo Matsushita, Takuya Oda
  • Patent number: 11108208
    Abstract: An optical amplification system includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of the connection between the nodes; an amplification light input unit configured to input amplification light to a core of the plurality of cores of the multi-core fiber; an amplification unit configured to amplify communication light transmitted through at least one core of the plurality of cores of the multi-core fiber using the amplification light, the amplification unit being provided in the nodes or between the nodes; and an amplification light coupling unit configured to couple the amplification light input by the amplification light input unit to the amplification unit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: August 31, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 11100149
    Abstract: A search support system supporting a search of unstructured data associated with a subject name that is a name of a subject indicated by a predetermined structure in structured data which contains a plurality of structures having a hierarchical relationship, is configured to include: a synonym search section that extracts a set of synonyms from teacher data which is unstructured data for detecting synonyms of the subject name; and an extended synonym generation section that generates an extended synonym which is a phrase obtained by combining a first subject name of a first structure in the structured data or a first synonym which is a synonym of the first subject name and which is extracted by the synonym search section with one or more second subject names indicated by one or more second structures higher in order than the first structure.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: August 24, 2021
    Assignee: HITACHI, LTD.
    Inventor: Takuya Oda
  • Patent number: 11067753
    Abstract: An optical module includes: a substrate-type optical waveguide device; and an optical fiber that guides light that enters or exits the waveguide device. Spot sizes w1 and w2 satisfy 1<w2/w1<?; w1 is a spot size: on an end surface of the substrate-type optical waveguide device, and of a waveguide mode guided through a core of the substrate-type optical waveguide device, w2 is a spot size: on an end surface of the optical fiber, and of a waveguide mode guided through a core of the optical fiber, and a is a spot size ratio w2/w1 at which an efficiency ?(0) is equal to the efficiency ?(0) when w2/w1=1.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 20, 2021
    Assignee: Fujikura Ltd.
    Inventor: Takuya Oda
  • Publication number: 20210157707
    Abstract: The transferability determination apparatus includes: a data input unit which receives the input of first static feature data and first observation data related to a transfer source task; a static feature information modeling unit configured to generate a static feature model using the first static feature data as an objective variable and the feature values related to the first observation data as an explanatory variable; a transfer source data selecting unit configured to receive second static feature data of the transfer destination task and select first static feature data; a data extension unit configured to receive second observation data of the transfer destination task and calculate extended observation data on the basis of the second observation data and the static feature model; and a transfer source model evaluation unit configured to calculate a generalization error of a prediction result obtained by inputting the extended observation data to the analysis model.
    Type: Application
    Filed: September 4, 2020
    Publication date: May 27, 2021
    Inventors: Takuya KOMATSUDA, Takuya ODA
  • Publication number: 20210028857
    Abstract: 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: Application
    Filed: March 1, 2019
    Publication date: January 28, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu INUZUKA, Shokei KOBAYASHI, Akira HIRANO, Wataru KAWAKAMI, Tetsuro INUI, Seiki KUWABARA, Kei KITAMURA, Takafumi TANAKA, Takuya ODA, Hideki NISHIZAWA, Seiji OKAMOTO
  • Publication number: 20210013963
    Abstract: 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: Application
    Filed: February 13, 2019
    Publication date: January 14, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Seiki KUWABARA, Wataru KAWAKAMI, Hideki NISHIZAWA, Seiji OKAMOTO, Akira HIRANO, Shokei KOBAYASHI, Tetsuro INUI, Takuya ODA, Fumikazu INUZUKA, Takafumi TANAKA
  • Publication number: 20200387667
    Abstract: 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: Application
    Filed: March 25, 2020
    Publication date: December 10, 2020
    Inventors: Takuya ODA, Tadashi TAKEUCHI
  • Publication number: 20200344988
    Abstract: A fishing rod according to an embodiment of the present invention includes a rod body, and a fitting mounted on the outer peripheral surface of the rod body via a mounting portion of the fitting. A first fixing layer is formed to encircle the mounting portion and the rod body, and a second fixing layer is formed on the outer side of the first fixing layer. A coating layer made of a resin is formed on an outer side of the second fixing layer. In an embodiment, the coating layer is formed of a resin having a tensile elongation of 40% or more and a yield strain of 7% or more, both measured in conformity to JIS K 7161:2014, and the coating layer has a thickness of 1.3 mm or smaller.
    Type: Application
    Filed: October 29, 2018
    Publication date: November 5, 2020
    Inventors: Takuya ODA, Nobuhiro IZAKI, Takuji KAWAMURA
  • Patent number: 10686520
    Abstract: A transmission quality estimation system includes, three or more nodes and a transmission quality estimation device configured to estimate, transmission quality. A multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes. A node of the nodes includes a core connection unit configured to drop, add or relay light transmitted from, to or to each of to the plurality of cores of the multi-core fiber. The transmission quality estimation device includes an estimation unit configured to estimate transmission quality between the nodes on the basis of a transmission quality measurement light dropped by the core connection unit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 16, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Publication number: 20200158561
    Abstract: 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 ta
    Type: Application
    Filed: September 18, 2019
    Publication date: May 21, 2020
    Inventors: Takuya KOMATSUDA, Takuya ODA
  • Publication number: 20200132935
    Abstract: An optical module includes: a substrate-type optical waveguide device; and an optical fiber that guides light that enters or exits the waveguide device. Spot sizes w1 and w2 satisfy 1<w2/w1<?; w1 is a spot size: on an end surface of the substrate-type optical waveguide device, and of a waveguide mode guided through a core of the substrate-type optical waveguide device, w2 is a spot size: on an end surface of the optical fiber, and of a waveguide mode guided through a core of the optical fiber, and a is a spot size ratio w2/w1 at which an efficiency ?(0) is equal to the efficiency ?(0) when w2/w1=1.
    Type: Application
    Filed: April 2, 2018
    Publication date: April 30, 2020
    Applicant: FUJIKURA LTD.
    Inventor: Takuya Oda
  • Patent number: 10637568
    Abstract: A transmission quality estimation system includes, three or more nodes and a transmission quality estimation device configured to estimate, transmission quality. A multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes. A node of the nodes includes a core connection unit configured to drop, add or relay light transmitted from, to or to each of to the plurality of cores of the multi-core fiber. The transmission quality estimation device includes an estimation unit configured to estimate transmission quality between the nodes on the basis of a transmission quality measurement light dropped by the core connection unit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 28, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10615868
    Abstract: A communication system which includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes; a detection signal output unit configured to output a fault detection signal transmitted by the core provided in the multi-core fiber configured to connect together the nodes; and a fault detection unit configured to determine whether a fault has occurred between the nodes on the basis of a detection result of the fault detection signal.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 7, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara