NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on February 13th, 2025
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION on February 13th, 2025
NIPPON TELEGRAPH AND TELEPHONE CORPORATION: 21 patent applications
NIPPON TELEGRAPH AND TELEPHONE CORPORATION has applied for patents in the areas of H01S5/12 (2), G01R29/08 (2), H01S5/40 (1), H01S5/10 (1), H01S5/06 (1) G01C21/3819 (1), H01S5/026 (1), H04L43/0852 (1), H04L9/0869 (1), H04B10/61 (1)
With keywords such as: device, information, communication, signal, layer, radio, user, unit, light, and position in patent application abstracts.
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s): Taiga YOSHIDA of Tokyo (JP) for nippon telegraph and telephone corporation, Yasuhiro YAO of Tokyo (JP) for nippon telegraph and telephone corporation, Naoki ITO of Tokyo (JP) for nippon telegraph and telephone corporation, Jun SHIMAMURA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01C21/00
CPC Code(s): G01C21/3819
Abstract: a road boundary detection device is a road boundary detection device that acquires a set of lines corresponding to a road boundary from point cloud data as road boundary information. the road boundary detection device includes: a candidate point detection unit that detects each point of road boundary candidates corresponding to candidates of a road boundary from the point cloud data; a candidate point clustering unit that clusters each point of the road boundary candidates; an adjacent cluster reduction unit that reduces a cluster from a distribution of points in clusters in an adjacency relationship by using a predetermined cluster reduction method; a line fitting unit that fits one or more straight lines or curved lines to one or more of the clusters and output fitted lines as road boundary candidates; a line connecting unit that connects some of the fitted lines by using a predetermined analysis method; and an information output unit that outputs a calculated line as the road boundary information.
Inventor(s): Ryotaro TANIGUCHI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yasushi TAKATORI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoki MURAKAMI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoaki OGAWA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Minoru INOMATA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01R29/08, G01J1/44
CPC Code(s): G01R29/0814
Abstract: 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.
Inventor(s): Ryotaro TANIGUCHI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoki MURAKAMI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoaki OGAWA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yasushi TAKATORI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Minoru INOMATA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01R29/08
CPC Code(s): G01R29/0871
Abstract: the present disclosure relates to a propagation environment estimation method suitable for environment estimation of a wireless signal using a scale model. the method includes the following steps. the scale model is created. a light source regarded as a transmission station of the radio wave is installed in the scale model, and a measurement range in the scale model is irradiated by the light source. the measurement range irradiated by the light source is captured, and gradation of light obtained by the capture is converted into a reception level of the radio wave.
Inventor(s): Ryota SHIINA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Shinya Tamaki of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomohiro TANIGUCHI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01S1/70, G16Y40/30, G16Y40/60
CPC Code(s): G01S1/70
Abstract: an object of the present invention is to provide a communication system, a control device, a control method, and a program that can inexpensively acquire highly reliable sensor data. a communication system according to the present invention includes a control device, a plurality of lighting devices, and an iot device. the lighting devices output modulated light beams that are modulated, the iot device receives each of the modulated light beams, uses information obtained from each of the modulated light beams as metadata, and transmits, to the control device, the metadata and collected sensing data in association with each other, and the control device controls generation and output of the modulated light beams to the lighting devices, estimates a position of the iot device from the metadata, and stores the position of the iot device and the sensing data in association with each other.
Inventor(s): 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, Shuki WAI 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): G01S13/76
CPC Code(s): G01S13/765
Abstract: there is a position estimation method executed by a radio communication system including a radio communication device and another radio communication device, and the position estimation method includes a radio step of performing radio communication between the radio communication device and the other radio communication device using a directional beam, a relative position estimation step of estimating a relative position of the other radio communication device with respect to the radio communication device based on a direction of the directional beam in which a reception power of the directional beam is maximum in the other radio communication device and a distance corresponding to a round-trip-time of a radio signal between the radio communication device and the other radio communication device, and an absolute position estimation step of estimating the absolute position of the other radio communication device based on the absolute position of the radio communication device and the relative position of the other radio communication device.
20250053031. Optical Device_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Hidetaka Nishi of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G02F1/035, G02F1/03
CPC Code(s): G02F1/035
Abstract: an optical device includes a slab layer formed on a lower cladding layer, a core formed on the slab layer, a first metal layer, and a second metal layer. the optical device further includes a first adhesion layer and a second adhesion layer formed between the slab layer on both sides of the core and the first metal layer and the second metal layer. the first metal layer and the second metal layer are formed apart from the core.
Inventor(s): Yusuke UJITOKO of Tokyo (JP) for nippon telegraph and telephone corporation, Takahiro KAWABE of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06F3/01, G06F3/0481
CPC Code(s): G06F3/016
Abstract: a pseudo-haptic sensation presentation device receives first designation information that designates a specific user interface used for presenting a pseudo-haptic sensation, obtains, by using correspondence information indicating a correspondence between a plurality of pieces of registered user interface information indicating a plurality of different registered user interfaces and a plurality of pieces of conformity information for specifying visual information that is presented from the registered user interfaces in order to present the pseudo-haptic sensation, specific conformity information that is conformity information corresponding to the registered user interface information indicating the specific user interface designated by the first designation information, and, based on the specific conformity information, obtains output information indicating visual information that is presented from the specific user interface.
Inventor(s): Ibuki MISHINA of Tokyo (JP) for nippon telegraph and telephone corporation, Dai IKARASHI of Tokyo (JP) for nippon telegraph and telephone corporation, Koki HAMADA of Tokyo (JP) for nippon telegraph and telephone corporation, Ryo KIKUCHI of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06F16/28, G06F16/23, G06F21/60
CPC Code(s): G06F16/285
Abstract: provided is a clustering apparatus capable of securely performing hierarchical clustering while concealing all of a calculation process and values in the middle. a clustering apparatus includes: a cluster id update unit that combines two clusters closest to each other and updates a cluster id of a cluster id table in which a data id and a cluster id are associated with each other on a one-to-one basis; and an inter-cluster distance update unit that executes deletion processing of deleting information corresponding to clusters to be combined from an inter-cluster distance table that is a table of distances between all clusters and addition processing of adding a distance between a newly combined cluster and another cluster to the inter-cluster distance table, and updates the inter-cluster distance table, in which information of the cluster id table and the inter-cluster distance table is encrypted, and processing in the cluster id update unit and the addition processing in the inter-cluster distance update unit are performed by using information encrypted without being decrypted.
Inventor(s): Naoki SAIJO of Tokyo (JP) for nippon telegraph and telephone corporation, Hiroshi UEDA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06N20/00
CPC Code(s): G06N20/00
Abstract: from information for specifying a piece of music, biological information on a user before listening to the piece of music, and information regarding improvement in exercise capacity of the user, for a plurality of pieces of music, learning is performed of an estimation model that uses biological information as an input and obtains information on a piece of music estimated to have the largest effect of improving exercise capacity of the user in a state of the input biological information or information on a predetermined number of pieces of music in order from the piece of music estimated to have the largest effect, and by using the estimation model obtained by learning, on the basis of biological information on a user who is a target of recommendation of a piece of music, information on a piece of music estimated to have the largest effect of improving exercise capacity when the user is in a state of the biological information, or information on a predetermined number of pieces of music in order from the piece of music estimated to have the largest effect is obtained as a recommendation result.
Inventor(s): Shiori SUGIMOTO of Musashino-shi (JP) for nippon telegraph and telephone corporation, Yukihiro BANDO of Musashino-shi (JP) for nippon telegraph and telephone corporation, Masaki KITAHARA of Musashino-shi (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06T9/00, G01S17/89
CPC Code(s): G06T9/001
Abstract: an encoding device includes: an acquisition unit that acquires point cloud data indicating a three-dimensional position of a subject in a spherical coordinate system; an angle data encoding unit that frequency-converts scanning angle data that is time-series data of a scanning angle of each of points included in the point cloud data, quantizes a coefficient, and encodes the quantized coefficient; and a distance data encoding unit that predicts, for each of the points, a distance from a position of a measurement source to a point to be encoded on the basis of a distance from the position of the measurement source to a neighboring point in a distance map having the scanning angle as an axis, and encodes distance data indicating the predicted distance.
Inventor(s): Shin MURATA of Tokyo (JP) for nippon telegraph and telephone corporation, Yohei WAKISAKA of Tokyo (JP) for nippon telegraph and telephone corporation, Noriyoshi KAMADO of Tokyo (JP) for nippon telegraph and telephone corporation, Hiroaki ITO of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G10K11/178
CPC Code(s): G10K11/17823
Abstract: a noise suppression technique which allows a user to recognize that a specific event occurs when the event that the user needs to be aware of occurs even during a process of suppressing noise around the user is provided. when the noise around the user includes a sound originating from a predetermined event (hereinafter referred to as “event sound”), a noise suppression device allows a user to recognize that the event occurs.
Inventor(s): Erina Kanno of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Koji Takeda 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): H01S5/026, H01S5/12, H01S5/40
CPC Code(s): H01S5/026
Abstract: a wavelength multiplexing light source includes: a plurality of semiconductor lasers; and a single waveguide in proximity to the semiconductor lasers via a low refractive index material, in which each of the plurality of semiconductor lasers has a diffraction grating and oscillates at a different wavelength, evanescent light is generated at an interface between the semiconductor lasers and the low refractive index material, and the evanescent light is coupled to the waveguide. accordingly, the present invention can provide a wavelength multiplexing light source that is compact and operates in a single mode.
20250055254. Semiconductor Laser_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Koji Takeda of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Shinji Matsuo 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, Yoshiho Maeda of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H01S5/10, H01S5/06, H01S5/12
CPC Code(s): H01S5/101
Abstract: a semiconductor laser of the present invention includes: a waveguide structure including, in order, a first semiconductor layer, an active layer, and a second semiconductor layer; a p-type semiconductor layer disposed in contact with one side surface of the active layer; an n-type semiconductor layer disposed in contact with the other side surface of the active layer; a reflector optically coupled to one end of the active layer in a waveguide direction; a waveguide layer optically coupled to the other end of the active layer in the waveguide direction; a diffraction grating disposed on either one of a lower surface and an upper surface of the waveguide layer; and a refractive index control unit for changing a refractive index of the waveguide layer. thus, the semiconductor laser of the present invention can provide a good high-temperature operation with a simple configuration.
[[20250055313. ELECTRIC OUTAGE CONFIRMATION APPARATUS, POWER SUPPLY DEPLETION CONFIRMATION APPARATUS, ELECTRIC OUTAGE CONFIRMATION METHOD, POWER SUPPLY DEPLETION CONFIRMATION METHOD, AND PROGRAM_simplified_abstract_(nippon telegraph and telephone corporation)]]
Inventor(s): Ryo SATO 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
IPC Code(s): H02J13/00, G01R19/25
CPC Code(s): H02J13/00002
Abstract: a power outage confirmation device that confirms whether a power outage has occurred in an area including a communication building and a plurality of subscribed users accommodated in the communication building includes: a user confirmation unit that acquires information on the plurality of subscribed users in a case where a communication abnormality is detected from a power monitoring device; a subscription log confirmation unit that confirms a log of an in-home device of each of the subscribed users on the basis of the information; and a power outage determination unit that determines whether a power outage has occurred in the area on the basis of the log.
Inventor(s): Riku OMIYA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Kahoko TAKAHASHI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoaki OGAWA 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): H04B7/15
CPC Code(s): H04B7/15
Abstract: 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.
Inventor(s): Seiji YOSHIDA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B7/185
CPC Code(s): H04B7/18513
Abstract: a satellite signal reception apparatus includes: a signal selection unit that selects a predetermined number of satellite signals based on reception qualities of satellite signals received by a gnss antenna; and a measurement unit that executes positioning by using the predetermined number of satellite signals selected by the signal selection unit and determines an initial estimated position, in which the signal selection unit selects a plurality of satellite signals to be used for positioning or time synchronization based on a comparison result obtained by comparing a reception time expected in a case where a satellite signal is received as a direct wave at the initial estimated position with an actual reception time of the satellite signal.
Inventor(s): Ryo IGARASHI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Kazutaka HARA of Musashino-shi (JP) for nippon telegraph and telephone corporation, Ryo KOMA of Musashino-shi (JP) for nippon telegraph and telephone corporation, Takahiro SUZUKI of Musashino-shi (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B10/293, H04Q11/00
CPC Code(s): H04B10/293
Abstract: a signal intensity flattening method includes: classifying a plurality of user devices accommodated in the same relay node so that user devices with similar optical signal intensities are in the same class; and setting a signal transmission path for converging optical signals transmitted from user devices of the same class in the same optical transmission line, and adjusting the signal intensities of the optical signals converged in the same optical transmission line collectively without separating them for each wavelength.
Inventor(s): Kyo MINOGUCHI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Etsushi YAMAZAKI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Yoshiaki KISAKA of Musashino-shi (JP) for nippon telegraph and telephone corporation, Kengo HORIKOSHI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Seiji OKAMOTO of Musashino-shi (JP) for nippon telegraph and telephone corporation, Masanori NAKAMURA of Musashino-shi (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B10/61, H04B10/294
CPC Code(s): H04B10/61
Abstract: a gain adjustment method in an optical transmission system that performs communication by a digital coherent system including an optical transmission device and an optical reception device includes converting an optical signal transmitted from the optical transmission device into an electrical signal, converting the electrical signal from an analog signal to a digital signal, performing first signal processing on the digital signal, performing adaptive equalization processing on the digital signal subjected to the first signal processing using a digital filter, correcting an amplitude of an output signal of the digital filter based on information of the amplitude and a phase of the output signal of the digital filter and the amplitude of a known transmission signal, and performing second signal processing on the output signal of the digital filter whose amplitude has been corrected.
Inventor(s): Yuki YAMANAKA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Hiroyoshi TAKIGUCHI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Masanori SHINOHARA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomohiro NAGAI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yasunori WADA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04L9/08
CPC Code(s): H04L9/0869
Abstract: a detection system includes a node and a verification server, wherein the node includes first processing circuitry configured to generate a plurality of random values based on a seed received from the verification server, and generate a response based on information on an area of a first storage content specified by the plurality of generated random values, and transmit the generated response to the verification server, and the verification server includes second processing circuitry configured to generate a plurality of random values based on the seed, generate a verification response based on information on an area of a second storage content specified by the plurality of generated random values, determine whether the response received from the node matches the verification response, and output a determination result.
Inventor(s): Kei FUJIMOTO of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04L43/0852
CPC Code(s): H04L43/0852
Abstract: provided is a device including: computing hardware including one or more central processing units (cpus); and an operating system (os) implemented on the computing hardware and comprising a kernel. the device is configured to perform packet processing according to new api (napi) polling model in the kernel of the os.
Inventor(s): Riku OMIYA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Junichi IWATANI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Akira KISHIDA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Shinya OTSUKI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yusuke ASAI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tomoaki OGAWA 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): H04W74/0816, H04W8/22, H04W84/12
CPC Code(s): H04W74/0816
Abstract: a wireless communication system includes: a first wireless terminal capable of communicating through both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band higher than the first frequency band; a second wireless terminal that is compatible with communication through the first communication scheme and is not compatible with communication through the second communication scheme; and a base station that is compatible with multi-link and accommodating the first wireless terminal and the second wireless terminal. a carrier sense level during transmission in communication between a base station and the first wireless terminal through the first communication scheme is set to a value less than a predetermined value that is a carrier sense level during transmission in communication between the base station and the second wireless terminal through the first communication scheme.
NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on February 13th, 2025
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- G01C21/00
- CPC G01C21/3819
- Nippon telegraph and telephone corporation
- G01R29/08
- G01J1/44
- CPC G01R29/0814
- CPC G01R29/0871
- G01S1/70
- G16Y40/30
- G16Y40/60
- CPC G01S1/70
- G01S13/76
- CPC G01S13/765
- G02F1/035
- G02F1/03
- CPC G02F1/035
- G06F3/01
- G06F3/0481
- CPC G06F3/016
- G06F16/28
- G06F16/23
- G06F21/60
- CPC G06F16/285
- G06N20/00
- CPC G06N20/00
- G06T9/00
- G01S17/89
- CPC G06T9/001
- G10K11/178
- CPC G10K11/17823
- H01S5/026
- H01S5/12
- H01S5/40
- CPC H01S5/026
- H01S5/10
- H01S5/06
- CPC H01S5/101
- H02J13/00
- G01R19/25
- CPC H02J13/00002
- H04B7/15
- CPC H04B7/15
- H04B7/185
- CPC H04B7/18513
- H04B10/293
- H04Q11/00
- CPC H04B10/293
- H04B10/61
- H04B10/294
- CPC H04B10/61
- H04L9/08
- CPC H04L9/0869
- H04L43/0852
- CPC H04L43/0852
- H04W74/0816
- H04W8/22
- H04W84/12
- CPC H04W74/0816
