NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on February 6th, 2025
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION on February 6th, 2025
NIPPON TELEGRAPH AND TELEPHONE CORPORATION: 19 patent applications
NIPPON TELEGRAPH AND TELEPHONE CORPORATION has applied for patents in the areas of G01C21/20 (1), G06V20/58 (1), G06T5/50 (1), G06T5/70 (1), G06T7/13 (1) G01C21/20 (1), G06T5/50 (1), H04B10/504 (1), H04B10/2507 (1), H03F3/45475 (1)
With keywords such as: signal, unit, information, optical, layer, target, amount, surface, configured, and position in patent application abstracts.
Patent Applications by NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s): Kotaro MATSUDA of Tokyo (JP) for nippon telegraph and telephone corporation, Yosuke TAKAHASHI of Tokyo (JP) for nippon telegraph and telephone corporation, Hiroki IKEUCHI of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01C21/20, H04W24/10
CPC Code(s): G01C21/20
Abstract: a computer executes a collection procedure of collecting first measurement information measured by passive measurement, a communication status estimation procedure of estimating an estimation map representing a communication status of each position using the first measurement information, and a design procedure of designing a measurement route of active measurement using the estimation map.
Inventor(s): Atsushi NAKAMURA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yusuke KOSHIKIYA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01M11/02, G01M11/00
CPC Code(s): G01M11/02
Abstract: an object of the present invention is to provide an optical fiber testing device and an optical fiber testing method capable of acquiring both unidirectional crosstalk and bidirectional crosstalk of an uncoupled multicore fiber in a short time and with a little man-hour.
Inventor(s): Atsushi NAKAMURA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yusuke KOSHIKIYA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01M11/02, G01M11/00
CPC Code(s): G01M11/02
Abstract: the optical fiber testing device according to the present invention includes: the light input unit configured to input test light to an arbitrary core at one end a of the uncoupled multicore fiber ; the light receiving unit configured to receive output light outputted from each core at the other end b of the uncoupled multicore fiber by the test light and measure light intensity of the output light of each core; and the calculation unit configured to calculate unidirectional transmission crosstalk in a case of performing unidirectional transmission, in which transmission directions of light beams are the same between two cores of the uncoupled multicore fiber , from the light intensity of the output light, and calculate bidirectional transmission crosstalk in a case of performing bidirectional transmission, in which transmission directions of light beams are different between two cores of the uncoupled multicore fiber , from the unidirectional transmission crosstalk.
Inventor(s): Arinobu NIIJIMA of Tokyo (JP) for nippon telegraph and telephone corporation, Yuki KUBO of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G01N29/24, G01N29/34, G01N29/46
CPC Code(s): G01N29/2437
Abstract: according to one aspect of this invention, upon estimating a contact state or a state of an object when a sensing unit is brought into contact with the object, a sensor device in which a first piezoelectric element and a second piezoelectric element are integrally configured in a state of being overlapped with each other is provided in the sensing unit. then, an acoustic interface unit drives the first piezoelectric element to transmit a first sound wave and detects a reception signal corresponding to a second sound wave received by the second piezoelectric element in response to the transmission of the first sound wave, and an estimation device extracts a frequency feature amount from the reception signal and estimates a contact state of the sensing unit with the object or a state of the object on the basis of the extracted frequency feature amount.
Inventor(s): Takashi Yamada of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Kiyofumi Kikuchi of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yuriko Kawamura of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G02B6/36, G02B6/04, G02B6/42
CPC Code(s): G02B6/3636
Abstract: an optical waveguide substrate, which includes a substrate main body; and an optical waveguide formed in the substrate main body, is configured in a manner that the substrate main body includes a through-hole which includes one end surface of the substrate main body and penetrates the substrate main body in a thickness-wise direction, and a long groove portion which communicates with the through-hole and extends in parallel with a main surface of the substrate main body, the through-hole is formed at a position corresponding to the optical waveguide, and an inner surface of the long groove portion includes an inclined surface which is in contact with an optical fiber when the optical fiber is inserted through the long groove portion via the through-hole.
20250044663. Optical Device_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Hidetaka Nishi of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Shinji Matsuo of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Toru Segawa of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G02F1/377, G02F1/355, H01S5/042, H01S5/30
CPC Code(s): G02F1/377
Abstract: an optical device includes a cladding layer and a core formed on the cladding layer and including a crystal of a iii-v compound semiconductor crystal. the core has a plurality of first regions and second regions periodically connected in series. in addition, adjacent first regions and second regions have reversals of polarization. in the plurality of first regions and second regions included in the core, the adjacent first region and second region have reversals of polarization in a direction perpendicular to a waveguide direction.
Inventor(s): Go Itami of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Tsuneko Kura of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Hiroshi MATSUBARA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Jun KATO of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G05D1/247, G05D1/617, G05D1/654, G05D109/20
CPC Code(s): G05D1/247
Abstract: there are provided a distance acquisition unit () that detects a separation distance between a flight vehicle (v) and a platform (), a remaining amount acquisition unit () that acquires a remaining amount of a drive battery (), a radio field intensity acquisition unit () that acquires a radio field intensity of a reception signal received by a communication unit (), and a return control unit () that performs control to cause the flight vehicle (v) to return to the platform () in at least one of a case where the remaining amount of the drive battery () falls below a lower limit remaining amount determined by the separation distance or a case where the radio field intensity falls below a lower limit intensity.
Inventor(s): Kenta Shinohara of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Susumu NAKAZAWA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Fumihiko SAWAZAKI of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yuki AKAMATSU of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06F8/656, G06F9/455, G06F11/14
CPC Code(s): G06F8/656
Abstract: an update control device () of a redundancy system () updates an application installed in a virtual machine () included in each of a stack () and a stack () each indicating an instance group of a virtual resource. an update control device () executes a creation step of generating a virtual machine () corresponding to each stack () and including a stack () in which a new application is stored, and a changing step of sequentially performing a process of changing a stack indicating the secondary interface associated with each stack () to each stack ().
Inventor(s): Atsuhiko MAEDA of Tokyo (JP) for nippon telegraph and telephone corporation, Kazuaki OBANA of Tokyo (JP) for nippon telegraph and telephone corporation, Yukio KIKUYA of Tokyo (JP) for nippon telegraph and telephone corporation, Kenichi FUKUDA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06F30/20
CPC Code(s): G06F30/20
Abstract: an information generation device acquires past event information including information on a position where a predetermined event occurred and supplementary information regarding the position, and generates simulated event information obtained by simulating occurrence of the event in a predetermined area, with an occurrence position of the simulated event information being a position in the predetermined area based on the position included in the past event information and the supplementary information regarding the position.
Inventor(s): Midori KAWADA of Tokyo (JP) for nippon telegraph and telephone corporation, Minako HARA of Tokyo (JP) for nippon telegraph and telephone corporation, Masahiro SOTOMA of Tokyo (JP) for nippon telegraph and telephone corporation, Xiaoxi ZHANG of Tokyo (JP) for nippon telegraph and telephone corporation, Machiko SHINOZUKA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06Q10/0637, G06F40/268
CPC Code(s): G06Q10/0637
Abstract: an object of the present disclosure is to propose a technology that can allow even non-specialists to easily identify driving forces (df) in order to support the creation of scenarios in line with the actual situation of a company.
Inventor(s): Midori KAWADA of Tokyo (JP) for nippon telegraph and telephone corporation, Minako HARA of Tokyo (JP) for nippon telegraph and telephone corporation, Masahiro SOTOMA of Tokyo (JP) for nippon telegraph and telephone corporation, Xiaoxi ZHANG of Tokyo (JP) for nippon telegraph and telephone corporation, Machiko SHINOZUKA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06Q10/0637, G06F40/268
CPC Code(s): G06Q10/0637
Abstract: a strategy planning support device of the present disclosure includes: an epu analysis unit that performs epu analysis on a word in a social situation survey document by using a frequently occurring word in a financial statement of an organization as a policy classification term; an uncertainty calculation unit that calculates uncertainty of each classification analyzed by the epu analysis unit by using a potential dirichlet allocation method; a relevance calculation unit that detects a predetermined word appearing around the word analyzed by the epu analysis unit in a specific classification having the highest uncertainty as calculated by the uncertainty calculation unit, and calculates relevance of the predetermined word using a cosine similarity; a determination unit that determines a high-order specific word having a high relevance value calculated by the relevance calculation unit, as an element of each coordinate axis of a driving force; and an output unit that outputs the specific word determined by the determination unit.
Inventor(s): Takashi FURUTANI of Tokyo (JP) for nippon telegraph and telephone corporation, Masaki HISADA of Tokyo (JP) for nippon telegraph and telephone corporation, Minako HARA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06Q10/1053
CPC Code(s): G06Q10/1053
Abstract: a compatibility evaluation apparatus that evaluates compatibility between a target person and an evaluation target includes: an input unit configured to input target person text information that is text information on the target person; an evaluation unit configured to calculate a target person feature amount that is a non-financial feature amount from the target person text information, and calculate an evaluation target feature amount that is a non-financial feature amount from evaluation target text information that is text information on the evaluation target; and a compatibility calculation unit configured to calculate the compatibility based on the target person feature amount and the evaluation target feature amount.
Inventor(s): Shogo SATO of Tokyo (JP) for nippon telegraph and telephone corporation, Yasuhiro YAO of Tokyo (JP) for nippon telegraph and telephone corporation, Shingo ANDO of Tokyo (JP) for nippon telegraph and telephone corporation, Jun SHIMAMURA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06T5/50, G06T5/70, G06T7/13, G06T7/90, G06V10/44, G06V10/60, G06V10/762, G06V20/70
CPC Code(s): G06T5/50
Abstract: an input processing unit receives an image and a three-dimensional point cloud including three-dimensional points having reflection intensity on a surface of an object for which at least a relationship between an image capturing position and a measurement position is obtained in advance, and obtains pixel positions on the image corresponding to the respective three-dimensional points of the three-dimensional point cloud. a shadow region estimation unit performs clustering on pixels of the image on the basis of pixel values and pixel positions, obtains an average reflection intensity and an average value of quantified color information for each of clusters, and estimates a shadow region by performing comparison in the average reflection intensity and the average value of the color information between the clusters. a shadow correction unit corrects pixel values of the shadow region from the shadow region estimated and the image.
Inventor(s): Yukihiro GOTO of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Mitsuyasu YANAGIDA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yusuke SAKURAHARA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Takashi EBINE of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06V20/58
CPC Code(s): G06V20/58
Abstract: an object of the present disclosure is to enable extraction of a point cloud of a linear object such as a cable having a sparse point cloud.
Inventor(s): Yukihiro GOTO of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Mitsuyasu YANAGIDA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Yusuke SAKURAHARA of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Takashi EBINE of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G06V20/58
CPC Code(s): G06V20/58
Abstract: the present disclosure is a device and a method in which point cloud data representing three-dimensional coordinates and a movement track at the time of measuring the point cloud data are acquired, and the number of point clouds within a certain distance dfrom the point cloud on the movement track is repeatedly counted to extract a point cloud of a linear object such as a cable
Inventor(s): 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, Shin MURATA of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G10K11/178
CPC Code(s): G10K11/17857
Abstract: a cancellation device includes a sound signal processing unit that generates a cancellation signal for suppressing noise acquired by one or more reference microphones for acquiring noise, and one or more cancellation loudspeakers that emit sound on the basis of the cancellation signal. the sound signal processing unit generates the cancellation signal on the basis of sound signals obtained by one or more error microphones disposed in a region where noise is desired to be suppressed, and the one or more reference microphones have directivity and are disposed in the vicinity of the cancellation loudspeakers
Inventor(s): Hiroshi SAWADA of Tokyo (JP) for nippon telegraph and telephone corporation, Rintaro IKESHITA of Tokyo (JP) for nippon telegraph and telephone corporation, Keisuke KINOSHITA of Tokyo (JP) for nippon telegraph and telephone corporation, Tomohiro NAKATANI of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): G10L21/0272
CPC Code(s): G10L21/0272
Abstract: a source separation apparatus includes circuitry configured to create a second observation signal vector by using (i) a first observation signal vector representing an observation signal that is obtained by mixing target signals from a plurality of signal sources and (ii) a time delay set in which a time delay until a part of the target signals is observed is used as an element, the second observation signal vector being obtained by extending the first observation signal vector in consideration of the time delay; optimize, by using a predetermined algorithm, a parameter for a correlation matrix representing a transmission characteristic in consideration of the time delay for the target signals, and power of a given signal source at each time; and separate the target signals by using an optimized parameter and the second observation signal vector.
20250047069. Semiconductor Laser_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Takuro Fujii of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Koji Takeda 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, Shinji Matsuo of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H01S5/12, H01S5/06
CPC Code(s): H01S5/1221
Abstract: a semiconductor laser 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 waveguide layer optically coupled to the active layer in a waveguide direction; a first diffraction grating disposed on either one of a lower surface of the first semiconductor layer, an upper surface of the second semiconductor layer, and a side surface of the active layer; a second 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. the semiconductor laser can achieve a good high-temperature operation with a simple configuration.
Inventor(s): Hiroaki KATSURAI of Tokyo (JP) for nippon telegraph and telephone corporation, Kimikazu SANO of Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H03F3/45
CPC Code(s): H03F3/45475
Abstract: a reset signal is generated by a tia circuit alone. in an embodiment, a transimpedance amplifier configured to convert a current signal into a voltage signal includes a transimpedance stage including an amplification stage constituted of a transistor with a grounded emitter, and a comparator configured to compare a collector voltage of the transistor with a reference voltage and output a reset signal.
Inventor(s): Shimpei SHIMIZU of Musashino-shi (JP) for nippon telegraph and telephone corporation, Takayuki KOBAYASHI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Yutaka MIYAMOTO of Musashino-shi (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B10/2507, H04B10/291
CPC Code(s): H04B10/2507
Abstract: an optical transmission system, comprising:
Inventor(s): Shimpei SHIMIZU of Musashino-shi (JP) for nippon telegraph and telephone corporation, Takayuki KOBAYASHI of Musashino-shi (JP) for nippon telegraph and telephone corporation, Yutaka MIYAMOTO of Musashino-shi (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B10/2507, H04B10/291
CPC Code(s): H04B10/2507
Abstract: a transmission unit that maximizes a frequency interval between a plurality of channel components within a transmission band, and generates a first optical signal that is an optical signal in which the plurality of channel components are wavelength-division multiplexed, a first transmission path for transmitting the first optical signal, a phase conjugate conversion unit that generates a second optical signal by inverting a spectrum of the first optical signal, and a second transmission path for transmitting the second optical signal. the first transmission path and the second transmission path wavelength-disperse the plurality of channel components of the first optical signal and the second optical signal. the first transmission path may include one or more first optical relay units for amplifying and relaying the first optical signal. the second transmission path may include one or more second optical relay units for amplifying and relaying the second optical signal.
20250047388. OPTICAL TRANSMITTER_simplified_abstract_(nippon telegraph and telephone corporation)
Inventor(s): Shigeru Kanazawa of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Takahiko Shindo of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Meishin Chin of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation, Shohei Kosuga of Musashino-shi, Tokyo (JP) for nippon telegraph and telephone corporation
IPC Code(s): H04B10/50, H01S5/02345, H04B10/80
CPC Code(s): H04B10/504
Abstract: optical axes of a chip and a spatial optical system are aligned, and a high frequency band is improved. provided is an optical transmitter in which a chip to which a high frequency signal is applied is mounted on a subcarrier on which a high frequency wire is formed, the optical transmitter including a carrier on which an optical component of a spatial optical system sharing an optical axis with the chip and the subcarrier are mounted, and a ground block that is inserted between the carrier and the subcarrier and electrically conducts the carrier and the subcarrier.
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): H04L9/32
CPC Code(s): H04L9/3236
Abstract: a detection system includes two or more nodes and a base station that holds information on each of the nodes, wherein the base station includes first processing circuitry configured to search for a circuit passing through all nodes in a network only once, sequentially calculate as many hash values as a number of nodes in the network, and notify each node of an order in the circuit, a hash value according to the order among the calculated hash values, and a node in a subsequent stage in the circuit, and each of the nodes includes second processing circuitry configured to send a hash value notification of which is provided and a challenge to a node in a subsequent stage according to the order notification of which is provided, and verify whether or not the sent hash value matches a value calculated from the hash value notification of which is provided.
NIPPON TELEGRAPH AND TELEPHONE CORPORATION patent applications on February 6th, 2025
- NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- G01C21/20
- H04W24/10
- CPC G01C21/20
- Nippon telegraph and telephone corporation
- G01M11/02
- G01M11/00
- CPC G01M11/02
- G01N29/24
- G01N29/34
- G01N29/46
- CPC G01N29/2437
- G02B6/36
- G02B6/04
- G02B6/42
- CPC G02B6/3636
- G02F1/377
- G02F1/355
- H01S5/042
- H01S5/30
- CPC G02F1/377
- G05D1/247
- G05D1/617
- G05D1/654
- G05D109/20
- CPC G05D1/247
- G06F8/656
- G06F9/455
- G06F11/14
- CPC G06F8/656
- G06F30/20
- CPC G06F30/20
- G06Q10/0637
- G06F40/268
- CPC G06Q10/0637
- G06Q10/1053
- CPC G06Q10/1053
- G06T5/50
- G06T5/70
- G06T7/13
- G06T7/90
- G06V10/44
- G06V10/60
- G06V10/762
- G06V20/70
- CPC G06T5/50
- G06V20/58
- CPC G06V20/58
- G10K11/178
- CPC G10K11/17857
- G10L21/0272
- CPC G10L21/0272
- H01S5/12
- H01S5/06
- CPC H01S5/1221
- H03F3/45
- CPC H03F3/45475
- H04B10/2507
- H04B10/291
- CPC H04B10/2507
- H04B10/50
- H01S5/02345
- H04B10/80
- CPC H04B10/504
- H04L9/32
- CPC H04L9/3236
