Patents Assigned to Nippon Telegraph and Telephone Corporation
  • 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
  • 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
  • Publication number: 20240102883
    Abstract: A vibration reproduction device (100) is a vibration reproduction device that reproduces vibration of a pipeline (10) attached to a structure, and includes: a plurality of support members (101a, 101b) for supporting the pipeline; a fixing members (102a, 102b) for fastening the pipeline to the support members; support bases (103a, 103b) that are joined to the support members and to which a vibration force is applied; and viscoelastic members (106a, 106b) provided between the support bases and the ground.
    Type: Application
    Filed: October 8, 2019
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuta IKEGUCHI, Daiki KOBAYASHI, Daisuke UCHIBORI, Atsushi ARATAKE, Masafumi NAKAGAWA
  • Publication number: 20240102886
    Abstract: An object of the present invention is to provide an evaluation method and an evaluation device for easily determining whether or not a structural parameter of a multi-core fiber satisfies a desired connection loss value (a specification). The evaluation method according to the present invention includes a step of measuring center coordinates of each core with the center coordinates when a clad is approximated by a circle as an origin in an observed cross-sectional structure of the multi-core fiber to be objected, obtaining a length of a line segment connecting the origin and the center of each core and an angle formed by two line segments connecting the origin and two adjacent cores, and judging whether or not a desired connection loss characteristic is satisfied on the basis of whether or not the values satisfy a predetermined determination formula.
    Type: Application
    Filed: December 11, 2020
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Nobutomo HANZAWA, Takashi MATSUI, Yuto SAGAE, Kazuhide NAKAJIMA
  • Publication number: 20240105182
    Abstract: An array generating unit (15b) divides a sequence of acoustic features for each frame of an acoustic signal into segments of a predetermined length and generates an array in which a plurality of divided segments in a row direction are arranged in a column direction. A learning unit (15d) generates by learning, using the array, a speaker diarization model (14a) for estimating a speaker label of a speaker vector of each frame.
    Type: Application
    Filed: December 14, 2020
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsushi ANDO, Yumiko MURATA, Takeshi MORI
  • 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: 20240105202
    Abstract: Provided is a reverberation removal device that is highly accurate even in noisy environments and underdetermined conditions. Reverberation is removed by applying a plurality of reverberation prediction filters to an observation signal while switching the plurality of reverberation prediction filters according to each time frequency bin of the observation signal.
    Type: Application
    Filed: February 4, 2021
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Rintaro IKESHITA, Naoyuki KAMO, Tomohiro NAKATANI
  • 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: 20240102943
    Abstract: A dielectric spectroscopy measuring device includes a signal generation unit that generates electromagnetic waves, a signal separation unit that separate the electromagnetic waves according to a transmission direction and outputs the separated electromagnetic waves to an output destination corresponding to the transmission direction, a changeover switch unit that receives the electromagnetic waves generated by the signal generation unit via the signal separation unit, switches an output destination, and outputs the received electromagnetic waves, and outputs electromagnetic waves returning from the output destination to the signal separation unit, a sensor unit that irradiates a measurement target with the electromagnetic waves output by the changeover switch unit, and outputs measurement target waves obtained by irradiation to the changeover switch unit, a calibration standard unit including a circuit for calibration standard, the circuit outputting reflected waves for calibration generated by receiving the
    Type: Application
    Filed: February 5, 2021
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Masahito NAKAMURA, Takuro TAJIMA, Michiko SEYAMA
  • 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: 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
  • Publication number: 20240102797
    Abstract: A coating film evaluation structure includes a laminate including a first sheet, a second sheet, and a third sheet which are laminated. The second sheet is disposed on the first sheet, and the third sheet is disposed on the second sheet. In the laminate, the area of each sheet gradually reduces in the lamination direction, and a stepped portion is provided at an end portion. The coating film to be evaluated and the plurality of sheets have different colors. The coating film evaluation structure includes a coating film layer formed on the sheet having the largest area among the plurality of sheets so as to cover the other sheets and having a flat surface.
    Type: Application
    Filed: December 9, 2020
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Azusa Ishii, Shingo Mineta, Soichi Oka
  • Patent number: 11943250
    Abstract: A testing device (10) transmits a test packet that increases processing load to a device protected by a security system, the security system performing authentication of a packet transmitted to a to-be-protected device and a packet limit per source IP address. In addition, the testing device (10) generates a test session according to a scenario when transmitting the test packet and configures a packet so that the test packet uses a plurality of source IP addresses. In addition, the testing device (10) responds to a response request up to a predetermined stage of authentication among a plurality of stages of authentication performed by the security system so that the security system authenticates the test packet to be valid. In addition, the testing device (10) monitors, at a predetermined stage, packet filtering situation and processing load of the security system to which the test packet is transmitted.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 26, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Hiroshi Kurakami
  • Patent number: 11941165
    Abstract: A temperature stimulus presentation device includes a presentation unit that generates heat at a predetermined temperature, and a control unit that changes an area of the presentation unit depending on whether or not a temperature stimulus is presented.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: March 26, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Arinobu Niijima, Toki Takeda, Takafumi Mukouchi, Takashi Sato
  • Patent number: 11941890
    Abstract: A sidewalk information generation device includes a thinning unit configured to perform thinning processing for extracting, from image data indicating an area of a sidewalk, a centerline in a width direction of the area of the sidewalk, a segmentation unit configured to perform segmentation processing for dividing the centerline extracted by the thinning unit in a longitudinal direction to generate a plurality of lines, and a vectorization unit configured to convert each of the plurality of lines generated by the segmentation unit to vector data indicating a coordinate sequence of a plurality of line segments.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 26, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsuhiko Maeda, Manabu Yoshida, Yuki Yokohata, Ippei Shake
  • Patent number: 11941835
    Abstract: A technology capable of estimating information on a position and a size of a pupil or an iris using an image obtained by photographing eyes of a subject even when a part of the pupil or the iris is hidden in the image is provided.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: March 26, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Makoto Yoneya
  • Patent number: 11940868
    Abstract: An information analysis apparatus according to an embodiment includes an input unit that inputs information indicating an apparatus that is a fault occurrence location in a communication network and a factor of a fault, a storage unit that stores a restoration handling method rule in which the apparatus that is the fault occurrence location, the factor of the fault, and an appropriate restoration handling method for the fault are associated, and an analyzer that analyzes an appropriate restoration handling method for the apparatus and the factor indicated by the information that is input, based on information related to a past fault for the apparatus that is the fault occurrence location, or a condition inherent in the apparatus that is the fault occurrence location, from the restoration handling method rule.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: March 26, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Satoshi Suzuki, Haruhisa Nozue, Shunsuke Kanai, Fumika Asai, Naomi Murata, Kenichi Tayama
  • Patent number: 11940333
    Abstract: A heat flux sensor including two temperature sensors is used to obtain time-series data of a core temperature of a living body, and a blood flow rate in a vicinity of the heat flux sensor is measured by a blood flow sensor. In an arithmetic circuit, a delay time until a fluctuation of the core temperature of the living body is reflected on an epidermis temperature is calculated on the basis of the blood flow rate measured by the blood flow sensor and a previously prepared relation between the blood flow rate and the delay time until the fluctuation of the core temperature of the living body is reflected on the epidermis temperature, and a time corresponding to the core temperature of the living body on the basis of the delay time is corrected.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: March 26, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Michiko Seyama, Daichi Matsunaga, Yujiro Tanaka
  • Patent number: 11940663
    Abstract: An optical device includes a core formed on a substrate, a first source electrode and a second source electrode formed in contact with both side surfaces of the core interposed between the first source electrode and the second source electrode, and a drain electrode formed in contact with an upper surface of the core. The core, the first source electrode, and the second source electrode together form a plasmonic waveguide. The first source electrode and the second source electrode are Schottky coupled to the core.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 26, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hidetaka Nishi, Shinji Matsuo