NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on April 17th, 2025
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION on April 17th, 2025
NIPPON TELEGRAPH AND TELEPHONE CORPORATION: 19 patent applications
NIPPON TELEGRAPH AND TELEPHONE CORPORATION has applied for patents in the areas of G01H9/00 (2), G01C21/34 (1), H04B10/548 (1), H04B10/50 (1), H04J14/02 (1) G01C21/3446 (1), H04B7/0617 (1), H04R5/027 (1), H04N21/2662 (1), H04N13/122 (1)
With keywords such as: optical, signal, device, unit, input, including, transmission, power, image, and network in patent application abstracts.
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s): Kojun KOSHIJI of Tokyo JP for nippon telegraph and telephone corporation, Hanami YOKOI of Tokyo JP for nippon telegraph and telephone corporation, Yasuharu KANEKO of Tokyo JP for nippon telegraph and telephone corporation, Tatsuya MATSUKAWA of Tokyo JP for nippon telegraph and telephone corporation, Mika ISHIZUKA of Tokyo JP for nippon telegraph and telephone corporation, Takafumi HAMANO of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G01C21/34
CPC Code(s): G01C21/3446
Abstract: a route search device includes a memory and a processor configured to divide a communication network including a plurality of nodes and an edge connecting the nodes into a plurality of areas based on information of the nodes, and create a first network graph that represents a connection relationship between the areas; search for one or more first routes from a start point area including a start point node to an end point area including an end point node using the first network graph; and search for one or more second routes from the start point node to the end point node using a second network graph that represents a connection relationship between the nodes and the edge in areas included in the first routes.
Inventor(s): Yoshifumi WAKISAKA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Daisuke IIDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yusuke KOSHIKIYA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Nazuki HONDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G01H9/00, G01D5/353
CPC Code(s): G01H9/004
Abstract: the present disclosure relates to a signal processing device that: acquires a signal obtained by repeatedly injecting a plurality of light pulses with different optical frequencies into an optical fiber, and by performing distributed acoustic sensing-phase (das-p); calculates a phase change, caused by vibration applied to a section of the optical fiber, using the acquired signal; removes, from the calculated phase change, a component regarding a repetition period of the same optical frequency of the plurality of light pulses; and calculates the vibration applied to the section of the optical fiber, using a phase change obtained by removing the component regarding the period.
Inventor(s): Yuichiro Ikuma of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yusuke Nasu of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Kiyofumi Kikuchi of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Masayuki Takahashi of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G01R31/28, G02B6/122, G02B6/125, G02B6/13
CPC Code(s): G01R31/2851
Abstract: the present invention is intended to provide an inspection optical circuit that can input and output inspection light to and from a circuit to be inspected with low loss, and can minimize a space for disposing the inspection optical circuit. provided is an inspection optical circuit for inspecting a tested circuit formed on an optical circuit chip on a wafer by inputting and outputting light through a grating coupler, wherein the grating coupler is formed on the same optical circuit chip as the tested circuit, and a folded waveguide for connecting an input/output waveguide of the tested circuit and the grating coupler is formed in a region provided on a dicing line for cutting out the optical circuit chip.
[[20250123415. OPTICAL COMMUNICATION UNDERGROUND EQUIPMENT LOCATION MAPPING SYSTEM, OPTICAL COMMUNICATION UNDERGROUND EQUIPMENT LOCATION MAPPING METHOD, AND OPTICAL COMMUNICATION UNDERGROUND EQUIPMENT LOCATION MAPPING DEVICE_simplified_abstract_(nippon telegraph and telephone corporation)]]
Inventor(s): Tatsuya OKAMOTO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Daisuke IIDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yusuke KOSHIKIYA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Nazuki HONDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G01V1/01, G01H9/00, G01V1/22
CPC Code(s): G01V1/01
Abstract: the present disclosure provides an underground facility position contrast system s, which includes: a scattered light intensity distribution measurement device for measuring, when an earthquake vibration is applied to an optical fiber f laid underground, a change over time in a scattered light intensity distribution in a longitudinal direction of the optical fiber f; and an underground facility position contrast device for measuring a change over time in a distortion response distribution in the longitudinal direction of the optical fiber f based on the change over time in the scattered light intensity distribution in the longitudinal direction of the optical fiber f, estimating an underground facility state of the optical fiber f based on the change over time in the distortion response distribution in the longitudinal direction of the optical fiber f, and associating the underground facility position of the optical fiber f with a longitudinal distance of the optical fiber f.
Inventor(s): Daiki CHIBA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Toshiki SHIBAHARA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Mitsuaki AKIYAMA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): G06F21/56
CPC Code(s): G06F21/566
Abstract: a determination apparatus uses an identification model for identifying whether or not input data is malignant, to obtain a result of identifying whether or not the input data is malignant. further, the determination apparatus obtains grounds (explanation result) for the identification of the input data in the identification model using an explanation model that outputs the grounds for the identification in the identification model. the determination apparatus obtains a probability that identification results of the identification model is incorrect using an objection determination model receiving a result of the identification and an identification explanation result, and outputting a probability that the identification result is incorrect. the determination apparatus extracts data to be verified by the user on the basis of the probability that the identification result is incorrect.
Inventor(s): Masaaki NAGATA of Tokyo JP for nippon telegraph and telephone corporation, Yizhen WEI of Ibaraki JP for nippon telegraph and telephone corporation, Takehito UTSURO of Ibaraki JP for nippon telegraph and telephone corporation
IPC Code(s): G06F40/51, G06F40/166
CPC Code(s): G06F40/51
Abstract: an estimation apparatus includes: an input part configured to receive, as inputs, an extended word alignment between a source sentence and a translated sentence, and translation quality tags between the source sentence and the translated sentence; and an edit tag estimation part configured to estimate an edit tag based on the extended word alignment and the translation quality tags.
Inventor(s): Machiko SHINOZUKA of Tokyo JP for nippon telegraph and telephone corporation, Xiaoxi ZHANG 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): G06Q10/0637, G06F16/334
CPC Code(s): G06Q10/0637
Abstract: an object of the present invention is to propose a technique that enables even a person who is not an expert to easily identify a df in order to support creation of a scenario in accordance with an actual situation of an organization such as a company.
Inventor(s): Machiko SHINOZUKA of Tokyo JP for nippon telegraph and telephone corporation, Xiaoxi ZHANG 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): G06Q10/0637, G06F16/334
CPC Code(s): G06Q10/0637
Abstract: according to the present invention, there is provided a strategic planning support device that supports strategic planning of a company, the device including: a relationship analysis unit configured to analyze a word representing human behavior or regulations related to each of a plurality of detailed items in a financial index of a predetermined organization, the financial index varying due to a past similar event similar to an event of the predetermined organization; and an output unit configured to output, as each element of a coordinate axis of a driving force, a first word representing human behavior related to a first detailed item having the largest ratio in the financial index and a second word representing human behavior related to a second detailed item in which an absolute value of a correlation coefficient related to a correlation with the human behavior or regulations related to the first detailed item is equal to or less than a threshold value, among the plurality of detailed items.
Inventor(s): Takuhiro KANEKO of Musashino-shi JP for nippon telegraph and telephone corporation, Ko TANAKA of Musashino-shi JP for nippon telegraph and telephone corporation, Hirokazu KAMEOKA of Musashino-shi JP for nippon telegraph and telephone corporation, Shogo SEKI of Musashino-shi JP for nippon telegraph and telephone corporation
IPC Code(s): G10L25/30, G10L13/02, G10L21/003
CPC Code(s): G10L25/30
Abstract: a waveform signal generation system includes: a neural network function unit configured to generate a target waveform signal from an intermediate representation signal by changing a time component or a feature component of the intermediate representation signal indicating an intermediate representation between an input signal and the target waveform signal using a neural network function; and a non-neural network function unit configured to act for at least a part of processing for generating the target waveform signal from the intermediate representation signal using a non-neural network function indicating a relationship between the time component and the feature component of the intermediate representation signal. the neural network function unit upsamples a time component of the intermediate representation signal using the neural network function.
20250125588. Optical Device_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Yoshiho Maeda of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Koji Takeda of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Takuro Fujii of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Toru Segawa of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Shinji Matsuo of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H01S5/323, H01S5/026
CPC Code(s): H01S5/323
Abstract: the optical device includes a semiconductor layer formed on a cladding layer and composed of a iii-v compound semiconductor, and a light-receiving element for monitoring a semiconductor laser formed on the semiconductor layer and oscillation light of the semiconductor laser. a first p-contact layer and a first n-contact layer of the semiconductor laser, a second p-contact layer and a second n-contact layer, and a light absorption layer of the light-receiving element are composed of the same iii-v compound semiconductor (ingaasp).
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): H02J1/12
CPC Code(s): H02J1/12
Abstract: there is provided a control apparatus that executes control for a dc power supply system in which a plurality of bases including at least a first base including a first power supply device and a second base including a second power supply device and a load device are connected by electrical supply lines, the control apparatus including: an information acquisition unit that acquires information about a bus between the second power supply device and the load device; a determination unit that determines whether to execute voltage control in the dc power supply system, based on the information and a threshold value; and a control unit that executes voltage control on at least one of the first power supply device and the second power supply device in a case where the determination unit determines to execute the control.
Inventor(s): Shuki WAI of Musashino-shi JP for nippon telegraph and telephone corporation, Tatsuhiko IWAKUNI of Musashino-shi JP for nippon telegraph and telephone corporation, Daisei UCHIDA of Musashino-shi JP for nippon telegraph and telephone corporation, Takuto ARAI of Musashino-shi JP for nippon telegraph and telephone corporation, Naoki KITA of Musashino-shi JP for nippon telegraph and telephone corporation
IPC Code(s): H04B7/06, H04B7/08, H04W64/00
CPC Code(s): H04B7/0617
Abstract: one aspect of the present invention is a control method comprising: an acquisition step of acquiring a first coverage indicating a range in which a communication device and a terminal can communicate with each other, and a second coverage indicating a range in which the communication device provides a communication service; and a derivation step of deriving a beam width communicable in the second coverage on the basis of the first coverage and the second coverage acquired in the acquisition step.
Inventor(s): Takeo Sasai of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B10/073
CPC Code(s): H04B10/0731
Abstract: 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.
Inventor(s): Ryo MIYATAKE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Toshiaki SHITABA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Tomoaki YOSHIDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Yoichi FUKADA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Akihiro TANABE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04B10/548, H04B10/50, H04J14/02
CPC Code(s): H04B10/548
Abstract: according to one aspect of the present invention is an optical transmission apparatus including: a division unit configured to divide a frequency-multiplexed input signal into signals with a plurality of bands; a plurality of phase modulators that are allocated to the plurality of bands divided by the division unit and perform phase modulation on the signals with the allocated bands; and a synchronous addition unit configured to synchronously add the signals modulated by the plurality of phase modulators. the input signal may be a multichannel video signal. an output from the same laser diode may be input to each of the plurality of phase modulators.
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): H04L1/00, H04W52/24
CPC Code(s): H04L1/0003
Abstract: the wireless transmission device includes a power amplifier that varies transmission power. an snr degradation amount calculation unit calculates an snr degradation amount {qam} caused by qam and an snr degradation amount {apsk} caused by apsk on the basis of input/output characteristics of the power amplifier acquired from an input/output characteristic storage unit, a qam modulated signal acquired from a qam modulation unit, an apsk modulated signal acquired from an apsk modulation unit, and the transmission power of the power amplifier. a modulation scheme selection unit acquires a required snr {qam} of qam and a required snr {apsk} of apsk from a required snr storage unit, compares “required snr {qam}+snr degradation amount {qam}” with “required snr {apsk}+snr degradation amount {apsk}”, and selects the modulation scheme with the smaller value.
Inventor(s): Kosuke WATANABE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Takashi NAMBU of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04L65/80, H04L65/1023, H04L65/1104, H04M3/22
CPC Code(s): H04L65/80
Abstract: a voice quality information collection device includes a sip server log collection unit for collecting a sip server log including an incoming call number, identification information of a destination carrier, and a line number, from a sip server, an mg log collection unit for collecting an mg log including a terminationid allocated by a predetermined logic and a delay time calculated by an rtcp report, from an mg, and a data generation unit for converting a line number included in the sip server log into a terminationid and integrating the post-conversion sip server log and the mg log by using a terminationid, to generate log integration information.
Inventor(s): Motohiro MAKIGUCHI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Taiki FUKIAGE of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Takashi SANO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Hitoshi SESHIMO of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04N13/122, H04N13/156, H04N13/383
CPC Code(s): H04N13/122
Abstract: an image processing device according to an embodiment generates a stereoscopic image presented to a plurality of users from an original image. the image processing device is a computer including a processor. the processor is configured to: discretely divide an assumed viewpoint position of a tracked user who is a main viewer of the stereoscopic image; acquire an actual viewpoint position of the tracked user; generate left and right parallax inducing patterns from viewpoint images obtained by capturing an object included in the original image from a plurality of viewpoint positions, with a viewpoint image at the actual viewpoint position as a reference; and generate a stereo pair image including an image obtained by adding the parallax inducing patterns to a reference image to be presented and an image obtained by subtracting the parallax inducing patterns from the reference image.
Inventor(s): Yasuhiro MOCHIDA of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Daisuke Shirai of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation, Takuro YAMAGUCHI of Musashino-shi, Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04N21/2662, H04N21/462
CPC Code(s): H04N21/2662
Abstract: a video transmission device includes a plurality of transmission units that each convert into ip packets in parallel each video data with a low frame rate obtained by dividing video data with a high frame rate through allocation in units of video frames in temporally preceding order and transmit the ip packets.
Inventor(s): Shoichiro SAITO of Tokyo JP for nippon telegraph and telephone corporation, Masahiro YASUDA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04R5/027, H04R3/00, H04S7/00
CPC Code(s): H04R5/027
Abstract: provided is a microphone array for obtaining information equivalent to an ambisonics type acoustic signal. the microphone array includes two fixing parts fixed to both ears of a user, and at least two microphones held by the fixing parts respectively, wherein when the fixing parts are fixed to both ears, the position of the microphone arranged on one ear side and the position of the microphone arranged on the other ear side are asymmetrical.
Inventor(s): Takehiro MORIYA of Tokyo JP for nippon telegraph and telephone corporation, Yutaka KAMAMOTO of Tokyo JP for nippon telegraph and telephone corporation, Ryosuke SUGIURA of Tokyo JP for nippon telegraph and telephone corporation
IPC Code(s): H04S1/00, G10L19/008
CPC Code(s): H04S1/007
Abstract: a sound signal downmixing method includes a step of obtaining, for each of two channels, a signal obtained by adding an input sound signal of one channel to a signal obtained by delaying an input sound signal of the other channel and multiplying the delayed input sound signal by a weight value as a delayed crosstalk-added signal of the one channel, a step of obtaining preceding channel information and a left-right correlation value, and step of obtaining a downmix signal by performing weighted addition on the input sound signals of the two channels based on the left-right correlation value and the preceding channel information such that more of a signal derived from an input sound signal of a preceding channel among the signals derived from the input sound signals of the two channels is included as the left-right correlation value becomes larger.
NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on April 17th, 2025
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- G01C21/34
- CPC G01C21/3446
- Nippon telegraph and telephone corporation
- G01H9/00
- G01D5/353
- CPC G01H9/004
- G01R31/28
- G02B6/122
- G02B6/125
- G02B6/13
- CPC G01R31/2851
- G01V1/01
- G01V1/22
- CPC G01V1/01
- G06F21/56
- CPC G06F21/566
- G06F40/51
- G06F40/166
- CPC G06F40/51
- G06Q10/0637
- G06F16/334
- CPC G06Q10/0637
- G10L25/30
- G10L13/02
- G10L21/003
- CPC G10L25/30
- H01S5/323
- H01S5/026
- CPC H01S5/323
- H02J1/12
- CPC H02J1/12
- H04B7/06
- H04B7/08
- H04W64/00
- CPC H04B7/0617
- H04B10/073
- CPC H04B10/0731
- H04B10/548
- H04B10/50
- H04J14/02
- CPC H04B10/548
- H04L1/00
- H04W52/24
- CPC H04L1/0003
- H04L65/80
- H04L65/1023
- H04L65/1104
- H04M3/22
- CPC H04L65/80
- H04N13/122
- H04N13/156
- H04N13/383
- CPC H04N13/122
- H04N21/2662
- H04N21/462
- CPC H04N21/2662
- H04R5/027
- H04R3/00
- H04S7/00
- CPC H04R5/027
- H04S1/00
- G10L19/008
- CPC H04S1/007
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