Patents Assigned to Nippon Telegraph and Telephone Corporation
  • Patent number: 11350065
    Abstract: Using different deformation maps that have elements corresponding to respective pixels deriving from an original image and have low-spatial frequency components, the elements indicating a moving direction and a moving amount of the corresponding pixels, the pixels deriving from the original image are moved in a moving direction by a moving amount, the moving direction and the moving amount being specified by the elements corresponding to the respective pixels, and modulated images are obtained. The modulated images are separated into brightness components and color components to obtain brightness component images and color component images, brightness of brightness component images and/or color of color component images is modulated to obtain brightness-modulated image and/or color-modulated image, and a video is obtained, the video being configured by arranging integrated images obtained by integrating the obtained brightness-modulated images and/or color-modulated images.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventor: Takahiro Kawabe
  • Patent number: 11349524
    Abstract: A symbol-determining device according to an embodiment includes: a transmission line shortening unit that multiplies each symbol value of a symbol array that is part of an input signal by a tap gain of a linear digital filter and outputs a symbol array representing a sum of values acquired through the multiplication; a transmission line estimating unit that estimates a transfer function of a transmission line using an adaptive nonlinear digital filter on the basis of a symbol array representing a state of the transmission line; an addition comparison processing unit that calculates a minimum value of a distance function in a Viterbi algorithm on the basis of a metric that is calculated on the basis of the output of the transmission line shortening unit and the transfer function; and a path tracing-back determination unit that performs symbol determination by tracing back a trellis path in the Viterbi algorithm on the basis of the minimum value of the distance function.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroki Taniguchi, Shuto Yamamoto, Akira Masuda, Mitsunori Fukutoku
  • Patent number: 11349766
    Abstract: A bandwidth allocation apparatus includes: a traffic starting position detection unit that detects a start timing of burst traffic on the basis of the traffic information; a traffic information extraction unit that extracts information on a traffic amount of each of a plurality of traffic allocation periods from the traffic information extracted for each lower-level apparatus; a traffic amount estimation unit that calculates an average value of the traffic amount in the traffic allocation periods on the basis of the information on the traffic amount that the traffic information extraction unit has extracted for each lower-level apparatus; and a bandwidth allocation unit that allocates a first bandwidth which is an allocation bandwidth based on the average value calculated by the traffic amount estimation unit to the terminating apparatus from the start timing detected by the traffic starting position detection unit.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Daisuke Hisano, Hiroyuki Uzawa, Tatsuya Shimada
  • Patent number: 11349730
    Abstract: [Subject] Development costs of operation automation are reduced.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Naoyuki Tanji
  • Patent number: 11348430
    Abstract: A danger response evaluation device estimates the content of a possible danger through simulation using observation data acquired from an external device. Then, when the estimated content of the danger exceeds a predetermined threshold value, the danger response evaluation device gives, to a user terminal of a user, notification of an alarm that prompts a response to the danger. Thereafter, when having acquired the content of a response of the user to the danger from the user terminal of the user, the danger response evaluation device determines how much the content of the response corresponds to execution of a plan of a response to the danger stored in a storage unit in advance. Then, the danger response evaluation device evaluates, based on a result of the determination, how much the content of the actual response of the user contributes to a damage prevention effect related to the danger.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Megumi Uesu, Tomohiro Kokogawa
  • Patent number: 11349563
    Abstract: Provided are a communication monitoring method and a communication monitoring apparatus capable of an operation of identifying a coated optical fiber regardless of a propagation direction of an optical signal even before communication between an OLT and an ONU is opened.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takui Uematsu, Hiroyuki Iida, Hidenobu Hirota, Naotsugu Ambe
  • Patent number: 11349634
    Abstract: A cycle estimation device (10) includes: a candidate cycle extraction unit (11) which extracts a candidate cycle that is a cycle determination target from an input time-series pulse train; a pulse train shape analysis unit (12) which converts arrangement of the time-series pulse train into numerical values on the basis of the extracted candidate cycle and outputs a constant that adjusts a random noise threshold value of pulse repetition interval (PRI) conversion in response to an index indicating a degree of concentration of calculated numerical values; and a cycle detection unit (13) which executes PRI conversion using a value of the candidate cycle and the constant and performs cycle determination and cycle value detection.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroki Nagayama, Shingo Kashima, Masaki Tanikawa
  • Patent number: 11349586
    Abstract: A time providing method includes: by a computer, upon receiving data from a device, estimating a generation time of the data using a reception time of the data and a first delay time of the device previously estimated; providing information indicating the generation time to the data; and transmitting the data provided with the information indicating the generation time to a destination of the data.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kojun Koshiji, Naoki Higo, Toshimitsu Tsubaki, Masanao Nakano, Tatsuya Ishihara, Yoshiko Sueda
  • Patent number: 11349564
    Abstract: A crosstalk estimation system includes: a light source unit that generates a polarization-multiplexed light, which is a polarized light having multiplexed polarizations, of each wavelength in a sideband of a modulated signal and emits the polarization-multiplexed light of each wavelength; a multiplexer that multiplexes the modulated signal with the polarization-multiplexed light for each core, which is associated with one of the wavelengths; a transmission line that transmits the modulated signal multiplexed with the polarization-multiplexed light of each wavelength through a different core; a separation unit that separates the polarization-multiplexed light from the modulated signal multiplexed with the polarization-multiplexed light for each core; a measurement unit that generates light intensity data on the polarization-multiplexed light of each wavelength; and an estimation unit that estimates a crosstalk between the cores based on a difference in light intensity between the polarization-multiplexed light
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: May 31, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira Isoda, Takayuki Mizuno, Koki Shibahara, Takayuki Kobayashi, Yutaka Miyamoto
  • Patent number: 11350244
    Abstract: An information delivery technique for, at the time of delivery of area information via a network, delivering area information about a destination before a device arrives at the destination is disclosed. One aspect of the present disclosure is an information delivery apparatus including a delivery information management function unit configured to manage area information to be delivered, a destination management function unit configured to manage a destination of a device, and a communication function unit configured to deliver the area information to the device, wherein the destination management function unit determines the destination of the device using movement information about the device, and the communication function unit delivers area information about the destination to the device before the device moves to the destination.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kojun Koshiji, Naoki Higo, Toshimitsu Tsubaki, Masanao Nakano, Tatsuya Ishihara, Yoshiko Sueda
  • Patent number: 11347759
    Abstract: A document acquisition unit (15c) collects documents, a feature amount calculation unit (15d) calculates feature amounts of words included in the collected documents, a relevance calculation unit (15f) calculates relevances between the documents and words included in operation logs in a window operated by a user, using the calculated feature amounts of the words included in the documents, and a presentation unit (15g) presents, to the user, a predetermined number of the documents in an order of descending relevance, as related documents. In this manner, it is possible to present documents related to a user's operation to the user.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuki Urabe, Shiro Ogasawara, Kentaro Hotta
  • Patent number: 11349770
    Abstract: A communication control device specifies the top N flows in descending order of communication amounts input to a communication line as flows that are communication band limit targets, and limits a communication band of a group of flows that are the communication band limit targets to a predetermined limited band so that a sum of communication amounts of the flows input to the communication line is equal to or smaller than a predetermined line capacity. Here, the communication control device determines a value of N so that a limited band is equal to or larger than a communication amount of a flow having the largest communication amount in a group of flows that are not the communication band limit targets and is equal to or smaller than a communication amount of a flow having the smallest communication amount in the group of flows that are the communication band limit target.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiroki Iwahashi, Hidetaka Nishihara, Kaori Kurita, Kazuhiro Matsuo
  • Patent number: 11349744
    Abstract: Monitoring for preventative maintenance using Simple Network Management Protocol (SNMP) polling suitable for a large scale network is realized. A controller of the present invention for use in a system that monitors a plurality of monitored apparatuses by SNMP polling includes a request duplication unit that duplicates an SNMP request from an operator terminal, and a request transmission unit that transmits the duplicated SNMP requests to the monitored apparatuses all at once. The controller includes a response calculation unit that calculates an operator response value from a response value of the monitored apparatus which is retained in an apparatus information database (DB) according to a monitoring policy retained in a monitoring policy DB.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 31, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Akira Matsuda, Hitoshi Irino
  • Publication number: 20220164604
    Abstract: A classification device (10) includes: a classification unit (12) that performs classification by using a model (121) that is a model performing classification and is a deep learning model; and a preprocessing unit (11) that is provided prior to the classification unit (12), and selects an input to the model (121) by using a mask model (111) that minimizes a sum of a loss function and a magnitude of the input to the classification unit (12), the loss function evaluating a relationship between a label on an input from teaching data and an output of the model (121).
    Type: Application
    Filed: March 26, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Sekitoshi KANAI, Hiroshi TAKAHASHI
  • Publication number: 20220166840
    Abstract: A storage unit stores a service support system and a service function constituting the service support system in association with each other, and stores a target restoration level at the time of a failure of the service support system, an achievement determination criterion defined using the service function to determine that the target restoration level has been reached, and an implementation item constituting a countermeasure for realizing the target restoration level in association with each other. A determination section determines whether the service support system is functioning normally, by using failure information of the service support system, and when it is determined that the service support system is not functioning normally, a specifying section refers to the storage unit and specifies a target restoration level corresponding to the achievement determination criterion corresponding to a service function concerning the failure information, from the target restoration levels of the business.
    Type: Application
    Filed: March 10, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Miho IKEDA, Naoko KOSAKA, Tomohiro KOKOGAWA
  • Publication number: 20220164545
    Abstract: To enable accurate estimation of a dialogue act type taking utterance subject into account. A feature value extraction unit 130 extracts feature values including an utterance subject feature value which is a feature value related to an utterance subject of an utterance sentence for each of a first utterance sentence and a second utterance sentence, the second utterance sentence being an utterance sentence preceding the first utterance sentence, including at least the utterance sentence immediately preceding the first utterance sentence. A dialogue act estimation unit 260 estimates a dialogue act type of the first utterance sentence using the aggregate feature value generated by aggregating the extracted feature values for each of the first utterance sentence and the second utterance sentence and a previously learned dialogue act estimation model for estimating the dialogue act type indicating a kind of dialogue act taking into account the utterance subject of an utterance sentence.
    Type: Application
    Filed: March 25, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Nozomi KOBAYASHI, Kuniko SAITO, Junji TOMITA
  • Publication number: 20220163672
    Abstract: An object of the present disclosure is, in performing three-dimensionalization of an object point cloud by a laser or a radar, to reduce an amount of calculation in the axial direction of three-dimensional space coordinates, into which the object point cloud is to be mapped, while increasing accuracy in the three-dimensionalization of the object point cloud. The present disclosure calculates an absolute value of a difference between vehicle attitude data with a high sampling frequency and vehicle attitude data with a low sampling frequency. When the absolute value of the difference is small, the vehicle attitude data with the high sampling frequency is decimated and the vehicle attitude data with the low sampling frequency is outputted, to thereby reduce the amount of calculation in the axial direction of the three-dimensional space coordinates, into which the object point cloud is to be mapped.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shigehiro MATSUDA, Yukihiro GOTO, Ryuji HONDA
  • Publication number: 20220163441
    Abstract: A degradation predicting method is a degradation predicting method for predicting degradation of a reinforced concrete structure buried in the ground, the method including: a condensation occurrence condition evaluating step (S1) of evaluating a condensation occurrence condition on which condensation occurs on reinforcing steel; a condensation time calculating step (S2) of calculating a condensation time that is a total time in which condensation occurs on the reinforcing steel based on the condensation occurrence condition for each of a plurality of the reinforced concrete structures; a threshold determining step (S3) of determining a threshold of underground depth at which the reinforced concrete structure is less prone to degradation based on a relationship between the condensation time and a underground depth of the reinforced concrete structure; and a degradation predicting step (S4) of predicting degradation of a prediction-target reinforced concrete structure based on the threshold.
    Type: Application
    Filed: December 16, 2019
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Norihiro FUJIMOTO, Hisatoshi KASAHARA, Yosuke OKAMURA
  • Publication number: 20220166527
    Abstract: An interference evaluation method for evaluating, over an area, radio-wave interference that occurs between a first radio station and a second radio station includes: a distinguishing step of acquiring information indicating topographic cross-sections of respective azimuths centered about the first radio station, and distinguishing the topographic cross-section into a segment in which there is visibility from the position of the first radio station and a segment in which there is no visibility from the position of the first radio station; and a specification step of specifying a position at which a desired interference amount is reached based on a distance between the first radio station and the second radio station in a segment distinguished as having visibility from the position of the first radio station, and specifying a position at which the desired interference amount is reached by evaluating the radio-wave interference for each square of an evaluation target region segmented into squares in a segment d
    Type: Application
    Filed: March 11, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hideyuki TSUBOI, Hideki TOSHINAGA, Kazuto GOTO, Yushi SHIRATO, Naoki KITA
  • Publication number: 20220164523
    Abstract: A similar transition identification device includes: acquisition means for acquiring structure information of a screen related to a Web application and element information indicating constituent elements of the screen; identification means for identifying a similar transition representing screen transitions to other screens displaying contents similar to each other from among screen transitions to one or more other screens capable of being transitioned from the screen related to the Web application, the identification means identifying the similar transition based on the structure information and the element information acquired by the acquisition means; and creation means for executing one or more screen transitions selected from the similar transition identified by the identification means and creating specification information related to transitions between screens of the Web application.
    Type: Application
    Filed: March 31, 2020
    Publication date: May 26, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yu YOSHIMURA, Haruto TANNO, Yu ADACHI, Hiroyuki KIRINUKI, Toshiyuki KURABAYASHI