NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on May 1st, 2025
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION on May 1st, 2025
NIPPON TELEGRAPH AND TELEPHONE CORPORATION: 21 patent applications
NIPPON TELEGRAPH AND TELEPHONE CORPORATION has applied for patents in the areas of H04L45/24 (2), H04B1/00 (2), H04L27/26 (1), H04B10/079 (1), H04B10/27 (1) H04L45/24 (2), G01R31/088 (1), H04B10/07953 (1), H04W24/02 (1), H04W16/18 (1)
With keywords such as: optical, signal, data, device, transmission, unit, image, virtual, network, and path in patent application abstracts.
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s): Naoki HANAOKA of Tokyo JP for nippon telegraph and telephone corporation, Toru TANAKA of Tokyo JP for nippon telegraph and telephone corporation, Naomichi NAKAMURA of Tokyo JP for nippon telegraph and telephone corporation, Yuji HIGUCHI of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G01R31/08
CPC Code(s): G01R31/088
Abstract: an estimation device for estimating a position of occurrence of an accident on a feeder in a dc power supply system in which a plurality of bases each having a power supply device are connected by the feeder, the estimation device including: an information acquisition unit that acquires information from each base when the accident occurs; and an estimation unit that estimates the position of occurrence of the accident in the feeder by comparing the information between the bases.
Inventor(s): Chisato FUKAI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yoshiteru ABE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Kazunori KATAYAMA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G02B6/36
CPC Code(s): G02B6/3604
Abstract: an object of the present invention is to provide a ferrule rotation engagement unit and an optical switch using the same capable of realizing stable optical characteristics in optical path switching with low power consumption and more economically.
Inventor(s): Chisato FUKAI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yoshiteru ABE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Kazunori KATAYAMA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G02B6/36
CPC Code(s): G02B6/3604
Abstract: a ferrule rotation engagement unit according to the present disclosure includes a first ferrule and a second ferrule in which core centers of one or a plurality of single-core fibers are disposed on a circumference having a predetermined radius from a center in the cross section of the ferrule, a cylindrical sleeve into which one end of a convex shape of the first ferrule and the second ferrule are inserted, a spring that apply pressure to the first flange or the second flange in a direction in which the first ferrule and the second ferrule abut against each other, and a holder that holds the first ferrule, the second ferrule, and the sleeve so that the center axes of the first ferrule and the second ferrule are aligned.
Inventor(s): Yoshikazu NAKAMURA of Tokyo JP for nippon telegraph and telephone corporation, Shigeaki HARADA of Tokyo JP for nippon telegraph and telephone corporation, Kosuke SAKATA of Tokyo JP for nippon telegraph and telephone corporation, Tomonari FUJIMOTO of Tokyo JP for nippon telegraph and telephone corporation, Motomu NAKAJIMA of Tokyo JP for nippon telegraph and telephone corporation, Ryo SATO of Tokyo JP for nippon telegraph and telephone corporation, Yuji SHINOZAKI of Tokyo JP for nippon telegraph and telephone corporation, Norihiko OBAYASHI of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06F9/455, G06F9/50
CPC Code(s): G06F9/45558
Abstract: a virtual machine power consumption prediction device includes: a power consumption calculation part which calculates power consumption of a virtual machine running on a first server on the basis of a resource usage state on the first server; and a power consumption prediction part which predicts power consumption of the virtual machine when the virtual machine is moved to a second server on the basis of an index indicating energy consumption efficiency of each of the first server and the second server.
Inventor(s): Atsunori ICHIKAWA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06F9/48, G06F16/23
CPC Code(s): G06F9/4818
Abstract: provided is a queue computation system that executes processing on an oblivious priority queue, the queue computation system including: a storage unit that stores a data structure in which layered randomized arrays and a binary tree are combined; and a calculation unit that performs an operation on the data structure. in the data structure, each piece of data is stored in a randomized array of any layer together with a priority, and each node in the binary tree is capable of retaining, as element information, data, priority, position, and layer information in the randomized arrays.
Inventor(s): Akira TAKEUCHI of Tokyo JP for nippon telegraph and telephone corporation, Masahiro SOTOMA of Tokyo JP for nippon telegraph and telephone corporation, Minako HARA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06F40/268
CPC Code(s): G06F40/268
Abstract: in recent years, high performance can be obtained for tasks such as document classification, translation, summarization, and q&a, but ai alone is insufficient in terms of generating sentences, and it can be said that it is a high demand for ai to support people. an object of the present invention is to support generation of a document by generating a new sentence by supporting an idea of a person.
Inventor(s): Akira TAKEUCHI of Tokyo JP for nippon telegraph and telephone corporation, Masahiro SOTOMA of Tokyo JP for nippon telegraph and telephone corporation, Minako HARA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06F40/268
CPC Code(s): G06F40/268
Abstract: according to the present invention, a document generation supporting device that supports generation of a document includes: a morpheme analysis unit that performs morpheme analysis on data of the document and dividing the document into words; a mask word setting unit that sets a mask word by masking a predetermined word among the divided words; and a word search unit that uses a trained natural language processing model to search for a likelihood in consideration of a word possibility and a context based on the mask word, and determines a substitute possibility for the mask word in accordance with the likelihood to complete a document possibility.
Inventor(s): Wataru ITO of Tokyo JP for nippon telegraph and telephone corporation, Atsushi ARATAKE of Tokyo JP for nippon telegraph and telephone corporation, Yosuke SAKURADA of Tokyo JP for nippon telegraph and telephone corporation, Daisuke UCHIBORI of Tokyo JP for nippon telegraph and telephone corporation, Kazuaki WATANABE of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06T3/40, G06T5/50, G06T9/00
CPC Code(s): G06T3/40
Abstract: an image processing device () according to the present disclosure includes: an image cutting-out unit () that cuts out a cutout image including a predetermined object from an input image; an image size standardization unit () that performs standardization of a size of the cutout image to a predetermined size; and an image output unit () that outputs a cutout image after the standardization, in which the image size standardization unit () adds predetermined images in a width direction and a height direction of the cutout image in a case where the size of the cutout image is less than or equal to the predetermined size in both the width direction and the height direction, and adds predetermined images in at least one of the width direction or the height direction of the cutout image to generate an additional image having an aspect ratio identical to that of the predetermined size and compresses the additional image to the predetermined size in a case where the size of the cutout image is greater than the predetermined size in at least one of the width direction or the height direction.
Inventor(s): Xiaotian ZHAO of Tokyo JP for nippon telegraph and telephone corporation, Takafumi OKUYAMA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06T17/20, G06T15/20, H04N21/239, H04N21/81
CPC Code(s): G06T17/205
Abstract: a distribution control device includes a first creation unit configured to create, for each of a plurality of virtual viewpoints arranged for an object represented by 3d data constituting 3d video content, one-sided 3d data in which an amount of data of a portion of the object that cannot be visually recognized from the virtual viewpoint is reduced, and a distribution unit configured to distribute data including a mesh and a texture as one-sided 3d data of one virtual viewpoint among the one-sided 3d data for each of the virtual viewpoints to a terminal of a user according to a viewing angle of the user in a virtual space where the object is arranged.
Inventor(s): Shogo SEKI of Musashino-shi JP for nippon telegraph and telephone corporation, Hirokazu KAMEOKA of Musashino-shi JP for nippon telegraph and telephone corporation, Takuhiro KANEKO of Musashino-shi JP for nippon telegraph and telephone corporation, Ko TANAKA of Musashino-shi JP for nippon telegraph and telephone corporation
IPC Code(s): G10L25/18, G10L25/30
CPC Code(s): G10L25/18
Abstract: a signal analysis system includes: an acquisition unit configured to acquire a conversion network trained by using a sequence of a first mel-spectrogram in a machine learning scheme of acoustic conversion based on a classifier variational autoencoder; and a converter that converts a sequence of a second mel-spectrogram of an input acoustic signal into a sequence of a third mel-spectrogram of a target acoustic signal using the conversion network. the classifier variational autoencoder may perform learning of the conversion network using a task of complementing a missing frame in the sequence of the first mel-spectrogram. the classifier variational autoencoder may perform learning of the conversion network using a sequence of the first mel-spectrogram of the acoustic signal on which a noise signal is superimposed.
20250141174. OPTICAL AMPLIFIER_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Taiji SAKAMOTO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Ryota IMADA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Shinichi AOZASA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Kazuhide NAKAJIMA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H01S3/094, H01S3/067
CPC Code(s): H01S3/094007
Abstract: the present disclosure is an optical fiber amplifier including: an amplification optical fiber doped with a rare earth element, in which a pump light combiner for injecting multimode pump light into a cladding region of the amplification optical fiber is connected to an input end or an output end of the amplification optical fiber, and a reflective device for reflecting the pump light and transmitting signal light is connected to an end part, of the amplification optical fiber, to which the pump light combiner is not connected.
20250141474. TRANSMISSION APPARATUS_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Ken HIRAGA of Tokyo JP for nippon telegraph and telephone corporation, Doohwan LEE of Tokyo JP for nippon telegraph and telephone corporation, Hiroyuki SHIBA of Tokyo JP for nippon telegraph and telephone corporation, Jun MASHINO of Tokyo JP for nippon telegraph and telephone corporation, Hirofumi SASAKI of Tokyo JP for nippon telegraph and telephone corporation, Honoka ITO of Tokyo JP for nippon telegraph and telephone corporation, Yasunori YAGI of Tokyo JP for nippon telegraph and telephone corporation, Tomoya KAGEYAMA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B1/00, H04B7/06
CPC Code(s): H04B1/0007
Abstract: a transmission device includes: a first frequency converter configured to convert a frequency of a baseband signal into an intermediate frequency according to a desired oam mode; a delay line configured to generate a delay in a signal of the intermediate frequency; and a second frequency converter configured to convert the signal of the intermediate frequency in which the delay is generated into a constant radio frequency.
20250141485. MIXER CIRCUIT_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Teruo Jo of Tokyo JP for nippon telegraph and telephone corporation, Daisuke Kitayama of Tokyo JP for nippon telegraph and telephone corporation, Hiroyuki Takahashi of Tokyo JP for nippon telegraph and telephone corporation, Takeshi Sakamoto of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B1/18, H03D7/14, H04B1/00
CPC Code(s): H04B1/18
Abstract: the mixer circuit includes a mixer, an lo matching circuit inserted between an lo signal terminal and a first terminal of the mixer, an if matching circuit inserted between the if signal terminal and a second terminal of the mixer, and an rf matching circuit inserted between an rf signal terminal and a third terminal of the mixer. in the rf matching circuit, a reflection characteristic is set such that a minimum value of reflection loss appears on a high-frequency side of the frequency of the lo signal.
Inventor(s): Kazuya ANAZAWA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Toru MANO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Kei Kitamura of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yoshiaki SONE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Hideki Nishizawa of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B10/079
CPC Code(s): H04B10/07953
Abstract: a measurement apparatus includes a creation unit that creates a table in which a value of repeatedly applied electrical noise is associated with a bit error rate occurring at the time of application of the electrical noise in an optical transmission and reception module for transmitting a bit string to itself in a predetermined transmission mode, and an estimation unit that estimates and calculates an actual device noise curve of the optical transmission and reception module, calculates a theoretical noise curve of the optical transmission and reception module using a theoretical equation for the transmission mode, estimates and calculates a noise amount of the optical transmission and reception module from a deviation between the actual device noise curve and the theoretical noise curve, and estimates and calculates optical transmission and reception characteristics of the optical transmission and reception module as actual device characteristics using the noise amount.
Inventor(s): Naotaka SHIBATA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Shin KANEKO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B10/27, H04J14/02, H04Q11/00
CPC Code(s): H04B10/27
Abstract: an optical transmission device includes a wavelength cross connection unit that receives an optical signal transmitted from a first optical transmission device, separates the input optical signal according to a wavelength, and outputs each of the separated optical signals from a port corresponding to the wavelength, and an optical switch that outputs an optical signal output from the wavelength cross connection unit from a port to which a destination subscriber device is connected, in which the wavelength cross connection unit outputs the optical signal toward the optical switch in a case where the optical signal is an optical signal addressed to a subscriber device connected under control of a host device, and outputs the optical signal toward a second optical transmission device different from the first optical transmission device in a case where the optical signal is not an optical signal addressed to a subscriber device connected under control of the host device.
Inventor(s): Shota Kita of Tokyo JP for nippon telegraph and telephone corporation, Masaya Notomi of Tokyo JP for nippon telegraph and telephone corporation, Kengo Nozaki of Tokyo JP for nippon telegraph and telephone corporation, Akihiko Shinya of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B10/63, H03M1/12
CPC Code(s): H04B10/63
Abstract: an analog-digital conversion method according to the present invention is a method for converting an optical analog signal into an electrical digital signal, the method including: performing at least one of affine transformation with first reference light and homodyne detection with a detection axis of second reference light on the optical analog signal; converting the optical analog signal subject to transformation or detection into an electrical analog signal by photoelectric conversion; and converting the electrical analog signal into an electrical digital signal by thresholding.
Inventor(s): Keita KURIYAMA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Hayato FUKUZONO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Toshifumi MIYAGI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Takeshi ONIZAWA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L27/26, H04L5/00
CPC Code(s): H04L27/2621
Abstract: a wireless communication method includes phase shift amount determination processing for determining a random phase shift amount for each of subcarriers of transmission data. the wireless communication method further includes modulation processing for modulating the transmission data and further shifting a phase according to the random phase shift amount for each of the subcarriers. the wireless communication method further includes precoding processing for performing precoding on the transmission data after the modulation processing, and transmission processing for transmitting the transmission data after the precoding processing from the transmission device to the reception device.
Inventor(s): Ryota NAKAMURA of Tokyo JP for nippon telegraph and telephone corporation, Shigeaki HARADA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L41/122
CPC Code(s): H04L41/122
Abstract: a network control device includes circuitry configured to narrow down virtual servers, to second virtual servers as candidates that are to be reallocated to nodes, based on changes in a cost for the nodes that are included in a physical network; and allocate a second virtual network of virtual networks, to the physical network, based on information related to the physical network.
Inventor(s): Ryohei TSUGAMI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tatsuya FUKUI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L45/24, H04L67/1097
CPC Code(s): H04L45/24
Abstract: an object of the present disclosure is to provide a system that does not require a large amount of network resources even in a case of collecting data from a large number of data sources.
Inventor(s): Ryohei TSUGAMI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tatsuya FUKUI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L45/24, H04L67/1097
CPC Code(s): H04L45/24
Abstract: the present disclosure is a system for collecting data from a plurality of data sources to a server, the system including: a controller that determines a transmission policy to be distributed to the plurality of data sources, in which the controller determines the transmission policy for each data source on a basis of a data transfer requirement from the plurality of data sources to the server, calculates a total resource use amount of a case where the plurality of data sources executes the transmission policies set for the respective data sources, and adjusts the transmission policy for each data source so that the total resource use amount falls within a set threshold.
Inventor(s): Ryohei TSUGAMI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tatsuya FUKUI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L45/24
CPC Code(s): H04L45/24
Abstract: an object of the present disclosure is to provide a system that does not require a large amount of network resources even in a case of collecting data from a large number of data sources. the present disclosure is a system for collecting data from a plurality of data sources to a server, the system including: a path management controller that manages a communication path between the plurality of data sources and the server, in which the path management controller adjusts a section length of the communication path from each of the plurality of data sources to the server so as to shorten a time for generating the communication path for transmitting the data from the plurality of data sources to the server.
Inventor(s): Riku OMIYA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tomoaki OGAWA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Masashi IWABUCHI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yasushi TAKATORI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04W16/18, H04W16/26
CPC Code(s): H04W16/18
Abstract: an installation position calculation device of a relay station according to an embodiment includes: a first identification circuitry that identifies a position of an installed station candidate point at which an los region from the relay station is maximized; a next candidate point extraction circuitry that regards the position identified as a transmission point of a radio wave and extracts two or less top next installed station candidate point at which a next relay station maximizes the los region; a correction circuitry that corrects the position of each of the installed station candidate points extracted based on a fresnel zone for the next relay station; and a second identification circuitry that identifies, as an installation position of the next relay station, a position of a next installed station candidate point at which a reflection angle of the radio wave toward the next installed station candidate point extracted is minimized.
Inventor(s): Karin UMEDA of Musashino-shi JP for nippon telegraph and telephone corporation, Yoshihito SAKAI of Musashino-shi JP for nippon telegraph and telephone corporation, Hiroko NOMURA of Musashino-shi JP for nippon telegraph and telephone corporation, Hirotaka UJIKAWA of Musashino-shi JP for nippon telegraph and telephone corporation, Tatsuya SHIMADA of Musashino-shi JP for nippon telegraph and telephone corporation
IPC Code(s): H04W24/02, H04W36/22, H04W52/02
CPC Code(s): H04W24/02
Abstract: provided is a communication system including: one or more wireless stations that perform wireless communication with one or more terminals; a plurality of distributed stations connected, directly or via another device, to the one or more wireless stations; a cooperation information collection unit that acquires, at a predetermined cycle, cooperation information indicating a state of communication between the plurality of distributed stations and the one or more terminals; an optical path switching control unit that controls switching of an optical path between the one or more wireless stations and the plurality of distributed stations when it is determined, on the basis of the cooperation information, that the switching of the optical path between the one or more wireless stations and the plurality of distributed stations is required; and a sleep control unit that causes each of the distributed stations that can sleep to transition to a sleep state after the switching of the optical path is performed.
Inventor(s): Yuki SAKAUE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tomohiro TANIGUCHI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tatsuya FUKUI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04W28/10
CPC Code(s): H04W28/10
Abstract: an object of the present disclosure is to perform packet transmission control for each buffer according to communication requirements of an application.
Inventor(s): Yuki SAKAUE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tomohiro TANIGUCHI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tatsuya FUKUI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04W28/10
CPC Code(s): H04W28/10
Abstract: in order to achieve the above object, a control system according to the present disclosure is a control system that controls traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit packets accumulated in buffers via the wireless network; and a controller that performs transmission control on the terminal and the access point, in which the controller controls packet transmission between the terminal and the access point for each of the buffers on the basis of amounts of the packets accumulated in the buffers of the terminal and the access point and communication requirements of an application associated with the buffers.
NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on May 1st, 2025
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- G01R31/08
- CPC G01R31/088
- Nippon telegraph and telephone corporation
- G02B6/36
- CPC G02B6/3604
- G06F9/455
- G06F9/50
- CPC G06F9/45558
- G06F9/48
- G06F16/23
- CPC G06F9/4818
- G06F40/268
- CPC G06F40/268
- G06T3/40
- G06T5/50
- G06T9/00
- CPC G06T3/40
- G06T17/20
- G06T15/20
- H04N21/239
- H04N21/81
- CPC G06T17/205
- G10L25/18
- G10L25/30
- CPC G10L25/18
- H01S3/094
- H01S3/067
- CPC H01S3/094007
- H04B1/00
- H04B7/06
- CPC H04B1/0007
- H04B1/18
- H03D7/14
- CPC H04B1/18
- H04B10/079
- CPC H04B10/07953
- H04B10/27
- H04J14/02
- H04Q11/00
- CPC H04B10/27
- H04B10/63
- H03M1/12
- CPC H04B10/63
- H04L27/26
- H04L5/00
- CPC H04L27/2621
- H04L41/122
- CPC H04L41/122
- H04L45/24
- H04L67/1097
- CPC H04L45/24
- H04W16/18
- H04W16/26
- CPC H04W16/18
- H04W24/02
- H04W36/22
- H04W52/02
- CPC H04W24/02
- H04W28/10
- CPC H04W28/10
(Ad) Transform your business with AI in minutes, not months
Trusted by 1,000+ companies worldwide
