Patents Assigned to Nippon Telegraph and Telephone Corporation
  • Patent number: 11947175
    Abstract: The present disclosure intends to facilitate tearing a metal sheath even in a case where the metal sheath is incorporated in an optical fiber cable. The optical fiber cable of the present disclosure includes a cable core arranged at a central portion and accommodating a plurality of optical fibers gathered together, an inner layer sheath arranged on an outer circumference of the cable core and sheathing the cable core, a metal sheath arranged on an outer circumference of the inner layer sheath and wound around the inner layer sheath, an outer layer sheath arranged on an outer circumference of the metal sheath and sheathing the metal sheath, and at least one outer sheath tearing string arranged in a longitudinal direction inside the metal sheath.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuta Maruo, Hiroaki Tanioka, Hisashi Izumita, Yusuke Yamada, Shigekatsu Tetsutani, Yohei Endo
  • Patent number: 11946856
    Abstract: To estimate a fracture starting point of steel due to hydrogen embrittlement with high accuracy. A steel fracture starting point estimation device includes a hydrogen concentration distribution calculation unit adapted to calculate a hydrogen concentration distribution in steel-to-be-estimated when the steel fractures due to hydrogen embrittlement; a local critical hydrogen content calculation unit adapted to calculate critical hydrogen content at which the steel-to-be-estimated fractures due to hydrogen embrittlement; and a fracture starting point estimation unit adapted to read the hydrogen concentration distribution out of a storage unit. To estimate, calculate, from the hydrogen concentration distribution, a location in the steel in which hydrogen concentration of the critical hydrogen content is distributed, and designate the location in the steel as the fracture starting point of the steel-to-be-estimated.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Kamisho, Masamitsu Watanabe, Yosuke Takeuchi
  • Patent number: 11947770
    Abstract: A display control apparatus includes: a change detection unit that detects a change of a UI element on a target screen; a determination unit that determines a display update method among a plurality of display update methods for extended UIs based on the change of the UI element detected by the change detection unit; and a display update unit that updates display of the extended UIs by the display update method determined by the determination unit.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Makoto Komiyama, Akira Kataoka, Hidetaka Koya
  • Patent number: 11947975
    Abstract: An offload server includes: an application code analysis section configured to analyze a source code of an application and detect external library calls included in the source code as replacement sources; a replacement function detection section configured to retrieve libraries and IP cores from a code pattern database by using the detected external library calls as keys, as replacement-destination libraries/IP cores; and a replacement processing section configured to replace processing descriptions of the replacement sources with processing descriptions of the replacement-destination libraries/IP cores retrieved by the replacement function detection section and to generate interfaces of a CPU to the replacement-destination libraries/IP cores.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Yoji Yamato
  • Patent number: 11948471
    Abstract: Provided is a learning assistance technology that uses a learning history to check the level of comprehension by a learner in relation to a learning target.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takashi Hattori, Sanae Fujita, Yoshinari Shirai
  • Patent number: 11947907
    Abstract: An analysis device includes processing circuitry configured to perform parsing on a first character string based on a grammar described in a PEG in which a variable is associated with a predetermined terminal symbol, add, to the variable, an element in which a predetermined attribute is imparted to a part of the first character string, the part being a second character string analyzed as corresponding to the terminal symbol, extract an element that is latest from elements of each predetermined attribute from the variable, and determine whether the element extracted satisfies a predetermined condition regarding a context.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Nariyoshi Chida
  • Patent number: 11947507
    Abstract: A traffic monitoring apparatus that monitors traffic of a monitoring target network and includes a statistical information processor that acquires statistical information per specific flow of the traffic, and a packet capture unit that captures a packet of the specific flow, in which the statistical information processor includes a statistical information aggregation unit that aggregates the pieces of statistical information, and a statistical information file generation unit that generates a statistical information file based on the pieces of aggregated statistical information.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroyuki Uzawa, Shuhei Yoshida, Namiko Ikeda, Koyo Nitta
  • Patent number: 11949557
    Abstract: The ICT resource management device includes: a configuration information management part that manages configuration information of physical nodes and virtual nodes; a layer mapping part that performs mapping between the physical layer and the virtual layer; a location specifying part that specifies a location of a physical node; a device connect destination determination part that determines a physical node to which to connect the device in response to a request for configuration change based on at least one of the specified location, information relating to a service, a network connection configuration of the network connecting the device to the physical node, and quality of the network; a blueprint creation part that creates a blueprint based on the configuration information, the mapping information, and the connection destination; and an orchestrator part that performs orchestration.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Daisuke Aoki, Takeshi Kuwagata, Katsuyuki Hasebe, Makoto Kanzaki
  • Patent number: 11948319
    Abstract: A structure detection device according to an embodiment includes: a reading processing unit that reads, as three-dimensional point group data on an object present in a three-dimensional space, data including three-dimensional position information and color information at a point on a surface of the object; a filtering processing unit that performs filtering processing for extracting three-dimensional point group data on a detection-target structure from the three-dimensional point group data on the object present in the three-dimensional space based on the color information; and a generation processing unit that generates three-dimensional model data in which the detection-target structure is represented as a three-dimensional model based on the three-dimensional point group data on the detection-target structure, the three-dimensional point group data being extracted by the filtering processing unit.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Masaaki Inoue, Tomoya Shimizu, Ryuji Honda, Hiroyuki Oshida
  • Patent number: 11949460
    Abstract: An optical communication system includes an optical line terminal and a plurality of optical network units connected by optical transfer paths. The optical line terminal includes a light transmitting/receiving unit and a control unit. The light transmitting/receiving unit transmits/receives an optical signal to/from the plurality of optical network units via the optical transfer paths. The control unit performs control to change a launch power of an optical signal transmitted from the light transmitting/receiving unit, such that, when, regarding at least one optical network unit, a monitoring value has changed to a value indicating deterioration, a receive power of an optical signal in each of the plurality of optical network units is lower than or equal to an upper limit value and a receive power of an optical signal in the optical network unit in which the monitoring value has changed is higher than or equal to a lower limit value.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kyo Minoguchi, Tomoaki Yoshida, Toshiaki Shitaba
  • Patent number: 11947237
    Abstract: A semiconductor Mach-Zehnder optical modulator includes input side lead-out lines, phase modulation electrode lines, output side lead-out lines, electrodes that apply modulation signals propagating through the phase modulation electrode lines to respective waveguides, and ground lines. Furthermore, at least one n-type semiconductor layer or p-type semiconductor layer is formed between a substrate and a dielectric layer in a lower layer under the output side lead-out lines intermittently along the output side lead-out lines.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Josuke Ozaki, Hiromasa Tanobe, Shigeru Kanazawa
  • Patent number: 11949220
    Abstract: In a block (10) for a cable of the present disclosure, the block has a shape of a rectangular cuboid in which an upper surface (11) and a bottom surface have square shapes, the block has plural bending through holes (21) between one side surface of the rectangular cuboid and a side surface (12) neighboring the one side surface, arrangement of open ends (22) of the plural through holes in the one side surface of the rectangular cuboid is in a lattice manner, the arrangement of the open ends is in line symmetry with respect to a middle line (31) between an upper side and a bottom side of the one side surface and with respect to a middle line (32) between a lateral side and a lateral side of the one side surface, and arrangement of open ends (22) of the plural through holes in the side surface neighboring the one side surface of the rectangular cuboid is the same as the arrangement of the open ends (22) of the plural through holes in the one side surface of the rectangular cuboid.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kuniaki Terakawa, Tomohiro Kawano, Tatsuya Fujimoto, Kazunori Katayama, Tomomi Nagao
  • Patent number: 11947171
    Abstract: There is provided an optical waveguide component capable of implementing highly efficient optical coupling of an optical element and suppressing a crosstalk between channels in performing hybrid integration. A PLC as an optical waveguide component employing an offset structure includes an input-output unit using a local portion of an inclined surface on the side of a core in an inclined groove of an optical path conversion unit to be loaded with an optical element as a mirror surface. The inclined groove is formed to be deeper than the core in a direction intersecting an emission direction of an optical signal in the core and perpendicular to a horizontal direction of a substrate. An offset unit in the horizontal direction of the substrate is provided to communicate with the inclined groove on the side of an opposite inclined surface opposing the mirror surface as the local portion of the inclined surface.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Yu Kurata
  • Patent number: 11949812
    Abstract: The present invention suppresses the number of connections from another network, and reduces the load on call processing apparatuses in a local network.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: April 2, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Shun Sugimoto, Hiroshi Shimizu
  • Patent number: 11949817
    Abstract: A technique is provided that can reduce degradation of the sound quality due to a tandem connection of paired coding and decoding, and can reduce the operation processing amount and the required memory amount of a multipoint control unit. In multipoint connection between terminals of a plurality of communication networks (for example, a fixed phone line and a mobile phone line) having different communication capacities, when a multichannel coding including a monaural coding scheme of a communication network having a smaller communication capacity is used in a communication network having a larger communication capacity to transmit sounds of a plurality points to the communication network terminal having the larger communication capacity, control is exercised such that monaural codes of the plurality points are output.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takehiro Moriya, Yutaka Kamamoto, Ryosuke Sugiura
  • Patent number: 11950115
    Abstract: A measurement station collects radio base station performance information related to a radio communication performance of each radio base station, radio connection information related to a radio communication performance and a communication status of a corresponding radio terminal station, generates a measurement condition and an expected measurement result based on the radio base station performance information and the radio connection information, and notifies a measurement control signal corresponding to the measurement condition to the radio terminal station through the radio base station; the radio terminal station performs a communication setting of an own station based on the notified measurement control signal, and notifies a measurement preparation status to the measurement station; and the measurement station measures the radio communication performance by causing a flow of a measurement traffic to the radio terminal station through the radio base station, acquiring a measurement result, and determi
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
  • Publication number: 20240102967
    Abstract: A vibration test device (100) is a vibration test device for testing vibration of a pipeline (10) attached to a structure. The vibration test device includes a plurality of support members (101a, 101b) that are joined to a wall surface with a predetermined gap therebetween and support the pipeline, a first fixing member (102a) that fastens the pipeline to a first support member at a position where one end of the pipeline protrudes from the first support member, a second fixing member (102b) that fastens the pipeline to a second support member at a position where another end of the pipeline protrudes from the second support member, a vibration-applying portion (103) that applies vibration force to one of the support members, a detection unit (104) that detects vibration of the pipeline, and a measurement unit (105) that measures a vibration characteristic of the pipeline.
    Type: Application
    Filed: October 8, 2019
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daiki KOBAYASHI, Yuta IKEGUCHI, Daisuke UCHIBORI, Masafumi NAKAGAWA, Atsushi ARATAKE
  • Publication number: 20240106524
    Abstract: A transmission data controller determines a frequency bandwidth according to a relay apparatus position, the frequency bandwidth being used for a first signal transmitted from a first communication apparatus, on the basis of information regarding the number of first communication apparatuses with which a relay apparatus communicates at the relay apparatus position. The transmission data controller transmits band information indicating a frequency band selected from radio frequency bands that can be used for the first signal on the basis of the determined frequency bandwidth to the first communication apparatus. The first communication apparatus transmits the first signal having a frequency included in the frequency band indicated by the band information. The relay apparatus acquires waveform data of the first signal transmitted by the first communication apparatus, and transmits the acquired waveform data to a second communication apparatus by a second signal.
    Type: Application
    Filed: December 24, 2020
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kazumitsu SAKAMOTO, Yosuke FUJINO, Daisuke GOTO, Yasuyoshi KOJIMA, Kiyohiko ITOKAWA
  • Publication number: 20240104750
    Abstract: A target estimation image which is an image of a target at a time point t+w·u obtained by spinning the object in an object image at a time point t obtained from an input video of a plurality of frames in time-series by w unit time on the basis of a hypothesis of spin state and an object image at the time point t+w·u obtained from the input video are used, to estimate the spin state of the object by selecting a hypothesis of spin state and w in which likelihood of the target estimation image becomes high from among a plurality of hypotheses of spin states and a plurality of w whose absolute values are two or more, wherein an absolute value of w is an integer of 2 or more and u is a unit time.
    Type: Application
    Filed: January 28, 2021
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Dan MIKAMI, Susumu YAMAMOTO, Makio KASHINO, Naoki SAIJO, Masumi YAMAGUCHI, Takehiro FUKUDA
  • Publication number: 20240106759
    Abstract: An information communication device arranged between a transmission-side device and a reception-side device according to one embodiment includes a reception unit that receives transmission data to be transmitted from the transmission-side device to the reception-side device, a control unit that receives a notification indicating deterioration in quality the transmission data, determines conversion object data for converting a data type of the transmission data or reducing an information amount of the transmission data and non-conversion object data for not converting a data type based on the notification, and generates post-conversion object data by converting a type of the conversion object data based on the notification, a transmission queue that synthesizes the non-conversion object data and the post-conversion object data and generates converted transmission data, and a transmission unit that transmits the converted transmission data to the reception-side device.
    Type: Application
    Filed: February 16, 2021
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takahiro KUBO, Shinichi YOSHIHARA, Natsuki YASUHARA, Go YAZAWA