Patents Assigned to NTT, Inc.
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Publication number: 20260290316Abstract: A fourth training device generates data related to a synthesized speech from first embedded data representing a characteristic of an utterance of a speaker and first text data by using a speech synthesis model. The fourth training device generates second text data from data related to a synthesized speech by using the speech synthesis model. The fourth training device updates parameters of the speech synthesis model and parameters of the speech recognition model such that the first embedded data is similar to second embedded data representing a characteristic of an utterance of a synthesized speech, and the first text data is similar to the second text data.Type: ApplicationFiled: June 22, 2022Publication date: September 24, 2026Applicant: NTT, Inc.Inventors: Naoki MAKISHIMA, Ryo MASUMURA
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Publication number: 20260292650Abstract: A terminal apparatus includes a first wireless signal processing unit and a management unit. The first wireless signal processing unit processes a wireless signal for transmitting and receiving the wireless signal using each of a plurality of radio units. The management unit manages a connection destination of the first wireless signal processing unit. The first wireless signal processing unit is allocated with a plurality of different first identifiers respectively corresponding to the plurality of radio units. The management unit switches the first identifier according to a second identifier allocated to a second wireless signal processing unit that transmits and receives the wireless signal to and from the first wireless signal processing unit among one or more second wireless signal processing units of each of shared access points, and controls a connection destination of the radio unit.Type: ApplicationFiled: June 2, 2023Publication date: September 24, 2026Applicant: NTT, Inc.Inventors: Akira KISHIDA, Kengo NAGATA, Hirantha ABEYSEKERA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20260291764Abstract: An on-server data transmission device (200) includes: a traffic characteristic information collecting part configured to collect traffic characteristic information regarding a packet transfer; a polling determination part configured to, based on the received traffic characteristic information, generate polling schedule information for waking up a polling thread at a timing at which a packet arrival probability is equal to or greater than a predetermined threshold and causing the polling thread to sleep at other timings; and a polling instruction part configured to, based on received time synchronization information and polling schedule information, deliver a polling schedule indicating a time and time period in which polling is required to the polling thread to cause the polling thread to perform polling only for the time period indicated by the polling schedule.Type: ApplicationFiled: December 6, 2021Publication date: September 24, 2026Applicant: NTT, Inc.Inventors: Ko NATORI, Kei FUJIMOTO, Ikuo OTANI, Shogo SAITO
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Publication number: 20260287495Abstract: A corrosion reproduction device (1) according to the present disclosure includes a container (111), a calcium hydroxide aqueous solution (112) accommodated in the container (111), and a reinforcing bar member (113) immersed in the calcium hydroxide aqueous solution (112).Type: ApplicationFiled: July 15, 2022Publication date: September 24, 2026Applicant: NTT, Inc.Inventors: Yosuke TAKEUCHI, Yasuhiro MATSUMOTO, Toshimitsu IZUMI
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Patent number: 12744666Abstract: Normalization is performed with high precision in secure computation. A secure inverse computation system (100) receives [a] as an input and calculates [1/a]. The bit decomposition unit (11) generates a bit representation a0, . . . , a??1 of a. The flag sequence generation unit (12) generates {x0}, . . . , {x??1} indicating a most significant bit of {a0}, . . . , {a??1}. A bit sequence generation unit (13) generates {y0}, . . . , {y??1} in which {y0}, {y1}: ={0}, {yi}: ={(¬ai?2?xi?1) XOR xi} (2?i<?), {y?}: ={¬a??2?x??1}. The normalization multiplier generation unit (14) generates [c] obtained by bit-connecting {y??1}, . . . , {y0}. The normalization unit (15) calculates [b]: =[a][c].Type: GrantFiled: January 20, 2020Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventor: Dai Ikarashi
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Patent number: 12744582Abstract: A relay device has the following configuration for quickly and easily acquiring highly accurate terminal position information and controlling the reconfigurable intelligent surface. The reconfigurable intelligent surface dynamically changes the reflection direction of the radio wave. The image sensor captures a use range of a terminal composed of a plurality of regions divided in a lattice shape. A control device controls the reconfigurable intelligent surface. In particular, the control device acquires image data of a use range of the terminal captured by the image sensor. The control device searches for a region where the terminal exists among the plurality of regions from the image data. The control device directs the reflection direction of the reconfigurable intelligent surface to a region where the terminal exists.Type: GrantFiled: August 18, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Riku Omiya, Kahoko Takahashi, Tomoaki Ogawa, Yasushi Takatori
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Patent number: 12744594Abstract: A network controller included in an optical transmission system in which an optical transmitter and an optical receiver communicate with each other via an optical transmission path, the network controller including a simulator that constructs simulation models by virtually reproducing a state of an optical transmission path in an optical transmission system including the optical transmitter, the optical receiver, and the optical transmission path in different virtual spaces, and estimates a characteristic of a device provided in the optical transmission path in each of simulation models, and an ideal output estimator that estimates an output of a characteristic of an ideal device based on a characteristic of the device estimated by the simulator and a characteristic of a device provided in the optical transmission path obtained in a real space, in which a state of an optical transmission path is different for each of the simulation models.Type: GrantFiled: September 8, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventor: Takeo Sasai
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Patent number: 12743973Abstract: One aspect of the present invention is a pin display device 100 including a housing and a plurality of pins, the pin display device 100 being used as a pin display system 300 such that a direction in which at least gravity acts is set as a negative direction of a z direction, and a lower surface of the housing is brought into contact with or into proximity to an upper surface 200a that is one surface of a magnetic sheet 200. Each pot magnet emits a magnetic field capable of moving a pin 120 including the pot magnet in a positive direction of the z direction by a repulsive force due to a magnetic force generated between the pot magnet and the upper surface 200a of the magnetic sheet 200 in a state where the pin 120 including the pot magnet is inserted into a pin insertion hole.Type: GrantFiled: February 21, 2022Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventor: Kentaro Yasu
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Patent number: 12743804Abstract: A deterioration determination device (2) according to the present disclosure includes an input unit (21) that receives an input of image data indicating an image including a figure of an inspection object, a correction unit (232) that generates a corrected image in which the image is corrected to increase an aspect ratio of a region surrounding the figure of at least some inspection object included in the image, a target region extraction unit (252) that extracts, from the corrected image, a target region indicating the figure of the inspection object included in the corrected image, a deterioration region detection unit (253) that detects a deterioration region indicating a figure of a deterioration portion of the inspection object from the corrected image, and a determination unit (254) that determines a deterioration degree of the inspection object based on the target region and the deterioration region.Type: GrantFiled: June 4, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Yujin Hamano, Kazuaki Watanabe, Daisuke Uchibori, Yosuke Sakurada, Atsushi Aratake
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Patent number: 12745151Abstract: According to an aspect of the present invention, there is a wireless communication system including: a plurality of end wireless devices that include an antenna and transmit and receive signals to and from a wireless terminal which is a communication target; a plurality of transfer devices that transfer signals which are transmitted and received by the wireless terminal which is a communication target and the end wireless device; and a transfer management device that, in a case where communication status information indicating a status of communication between the wireless terminal and the end wireless devices is received, executes a transfer route control process of controlling paths between the plurality of transfer devices on the basis of the received or communication status information, wherein the end wireless devices execute a switching process of controlling operations of the end wireless devices relating to communication between the end wireless devices and the wireless terminal on the basis of the coType: GrantFiled: August 6, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Kenji Miyamoto, Yoshihito Sakai, Tatsuya Shimada
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Patent number: 12743299Abstract: A server delay control device for performing packet transfer from an interface part of a computer is deployed in a kernel of an OS. The OS includes a ring buffer; and a poll list in which net device information is registered. The server delay control device includes: a packet arrival monitoring part configured to run in the kernel as a thread that monitors the poll list to monitor a packet arrival according to a polling model; a packet dequeuer configured to, when a packet has arrived, reference the packet held in the ring buffer, and perform dequeuing to remove a corresponding queue entry from the ring buffer; and a sleep management part configured to, when there is no packet arrival over a predetermined period of time, cause the thread to sleep and, when a packet arrives, cancel the sleep of the thread by a hardware interrupt handler.Type: GrantFiled: March 18, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Kei Fujimoto, Masashi Kaneko
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Patent number: 12745100Abstract: An installation position calculation device of a relay station according to an embodiment includes: an identification circuitry configured to identify an installed station candidate point at which an LOS region from the relay station is maximized in an installed station candidate range or among a plurality of installed station candidate points predetermined as installation position candidates; a correction circuitry configured to correct a position of each of the identified installed station candidate points based on a Fresnel zone for the relay station; a storage circuitry configured to store, as an installation position of the relay station, the position of the installed station candidate point at which an LOS region from the relay station is maximized among each of the identified installed station candidate points or the corrected installed station candidate points; and a controller configured to control such that the number of installation positions of the relay station.Type: GrantFiled: February 17, 2022Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Riku Omiya, Masashi Iwabuchi, Tomoaki Ogawa, Yasushi Takatori
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Patent number: 12744670Abstract: An authentication system includes: a certificate authority; a central control system; a group including an unmanned vehicle that is a master vehicle and an unmanned vehicle that is a slave vehicle; a management system; and an external system. The central control system includes a first authentication information transmitting unit that transmits, to the master vehicle, first authentication information received from the certificate authority. The master vehicle includes an authentication unit that executes authentication with the slave vehicle belonging to the same group, and a second authentication information transmitting unit that transmits second authentication information including a first token with an expiration date and the first authentication information to the authenticated slave vehicle.Type: GrantFiled: July 4, 2022Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Fumiaki Kudo, Akira Nagai, Yusuke Iijima
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Base station control system, base station control method, base station control apparatus and program
Patent number: 12745099Abstract: In a base station control system including a first base station and a base station control apparatus, the base station control apparatus reduces a deviation in the numbers of terminals connected to base stations by including a setting unit configured to set, to the first base station, at least one of a first threshold value regarding a reception power from a terminal in the first base station and a second threshold value indicating an maximum number of a number of terminals connected to the first base station as a threshold value for limiting terminals capable of connecting to the first base station.Type: GrantFiled: September 1, 2021Date of Patent: September 22, 2026Assignee: NTT, Inc.Inventors: Toshiro Nakahira, Motoharu Sasaki, Daisuke Murayama, Shota Nakayama, Takatsune Moriyama, Yasushi Takatori -
Publication number: 20260280718Abstract: The optical reception device includes: a vector sum estimation unit that estimates a vector sum of symbols in a differentially detected training signal; and a detection unit that detects a period of receipt of at least the training signal on the basis of at least either a comparison result of comparison between an absolute value of the vector sum of symbols in the differentially detected training signal and an absolute value threshold, or a comparison result of comparison between a variation of a phase of the vector sum of symbols in the differentially detected training signal and a predetermined width.Type: ApplicationFiled: May 22, 2023Publication date: September 17, 2026Applicant: NTT, Inc.Inventors: Ryo KOMA, Junichi KANI, Kazutaka HARA, Ryo IGARASHI
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Publication number: 20260275263Abstract: In an embodiment, an adding device of a produced substance by a cultured organism includes a culture tube and a semipermeable membrane section. A culture solution containing the cultured organism flows through a channel inside the culture tube, and the culture tube extends into a medium. The semipermeable membrane section is formed in a portion of the culture tube extending inside the medium. The semipermeable membrane section allows the substance produced by the cultured organism but not cells of the cultured organism to pass therethrough, thereby allowing the produced substance to permeate the medium from the channel.Type: ApplicationFiled: December 2, 2022Publication date: September 17, 2026Applicant: NTT, Inc.Inventors: Sosuke IMAMURA, Kazuhiro TAKAYA
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Publication number: 20260282124Abstract: A wireless apparatus according to an embodiment of the present invention includes: first and second processing units configured to transmit and receive wireless signals using different channels; and a link management unit configured to manage a first link between the first processing unit and a terminal and a second link between the second processing unit and the terminal, in which the link management unit receives a request signal requesting data exchange relating to a first traffic identifier from the terminal, associates the first traffic identifier with the second link based on the request signal, and when a second traffic identifier different from the first traffic identifier is associated with the second link, changes the association of the second traffic identifier from the second link to the first link based on the request signal.Type: ApplicationFiled: May 19, 2026Publication date: September 17, 2026Applicant: NTT, Inc.Inventors: Akira KISHIDA, Kengo NAGATA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
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Publication number: 20260282141Abstract: A base station of an embodiment includes first and second wireless signal processing units and a link management unit. The link management unit establishes a multi-link with a terminal apparatus by using the first and second wireless signal processing units, and sets a primary link used as a main and a secondary link used as an auxiliary during the multi-link. The link management unit transmits a first wireless frame requesting a change of the primary link to the terminal apparatus by using the first wireless signal processing unit set to the primary link, and the link management unit changes the primary link from the first wireless signal processing unit to the second wireless signal processing unit if either the first or second wireless signal processor receives the affirmative response from the terminal apparatus after the first wireless frame is transmitted.Type: ApplicationFiled: May 18, 2026Publication date: September 17, 2026Applicant: NTT, Inc.Inventors: Akira KISHIDA, Kengo NAGATA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
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Patent number: 12736567Abstract: The present disclosure relates to a propagation environment estimation method suitable for environment estimation of a wireless signal using a scale model. The scale model is created. In the scale model, a light source regarded as a transmission station of a radio wave is installed. In the scale model, a light receiving element regarded as a receiver of the radio wave is installed. The light source irradiates a measurement range set in the scale model, and the light receiving element measures a light reception level. Data of the light reception level acquired in the previous step is converted into a reception level of the radio wave.Type: GrantFiled: December 24, 2021Date of Patent: September 15, 2026Assignee: NTT, Inc.Inventors: Ryotaro Taniguchi, Yasushi Takatori, Tomoki Murakami, Tomoaki Ogawa, Minoru Inomata
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Patent number: 12734439Abstract: Provided is a design maintenance system that gives game-like elements to design maintenance work of wireless equipment. A design maintenance tool used by a worker transmits wireless information such as a channel number measured in accordance with the design maintenance work to a design maintenance server. A game execution unit of the design maintenance server digitizes the received wireless information to generate a progress value necessary for progress of a game. A transmission unit of the design maintenance server transmits the progress value of the game to the design maintenance tool. The design maintenance tool progresses the game by using the received progress value, and displays a progress state to workers.Type: GrantFiled: June 17, 2021Date of Patent: September 15, 2026Assignee: NTT, Inc.Inventors: Masayoshi Nabeshima, Tomoaki Ogawa